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Concrete Casting News from the Hill and Griffith Company

A Short History of Concrete Pipe by the PCA

Posted by Hill and Griffith Company on Feb 14, 2019 9:00:29 AM

Concrete pipe has a well established history and reputation for being a long lasting, serviceable material.

Concrete-Form-Release-Agent-1.jpgThe Cloacae Maxima, built in about 180 B.C. as part of Rome's main sewer system, was constructed mainly of stone masonry and natural cement concrete. More than 2,000 years later, portions of the concrete sewer are still in use.

Modern day concrete sewer systems emerged during the mid-19th century when the public became conscious of the need for sanitation to control the spread of disease. The earliest recorded use of concrete pipe in the United States is a sewer installation built in 1842 at Mohawk, N.Y. Other New England cities followed suit and installed concrete pipelines in the second half of the nineteenth century. Many of these concrete pipelines are still in use today.

Milestones in development include the production of the first reinforced pipe in 1905, the invention of prestressed pipe in the 1930s, and the manufacture of the first steel-cylinder prestressed pipe in 1942. 

Sizes can range from four inches up to 17 feet in diameter. Although pipe can be manufactured in a variety of shapes, there are five standard shapes: circular, horizontal elliptical, vertical elliptical, arch, and rectangular. The pipe shape selected for a project depends on the topography of the site, importance of hydraulic and structural efficiency, erosion and deposition in the stream channel, and cost. Most often, the preferred pipe shape is the one that will alter the natural drainage flow the least.

Concrete-Form-Release-Agent-2.jpgFive Methods of Producing Pipe Made of Concrete

As with all concrete products, the basic materials are portland cement, aggregate, and water. There are five basic methods of producing pipe. Four methods -- centrifugal/spinning, dry cast, packerhead, and tamp-entail using a dry concrete mix. The fifth method, wet casting, uses a high-slump concrete mix. Wet-cast concrete mix usually has a slump less than four inches and is most frequently used for manufacturing large diameter pipe.

These types of pipe serve as a conduit material for irrigation, water supply lines, sanitary sewers, culverts, and storm drains. Culverts, usually made with arch-shaped concrete, are used to carry water under highways in non-urban areas. Storm drain systems for cities and towns are becoming more important as communities become larger and more densely populated. Recent major floods and the resulting damage only emphasize the need for efficient drainage systems.

Subsurface drainage carries away water below the surface of the pavement. This water reduces flow support capacity of the base and subgrade material causing potential damage to roads, airport runways, and building foundations. Many farm fields depend on proper underground drainage for their cultivation. Thousands of square miles of otherwise arid land rely on concrete irrigation pipe to supply water for farmland. Additionally, most of the large cities in the United States a pipe system made of concrete to transport their water supply.

(From the Portland Cement Association's web site.The PCA is a powerful and vocal advocate for sustainability, jobs creation, economic growth, infrastructure investment, and overall innovation and excellence in construction throughout the U.S.)

More information at the American Concrete Pipe Association web site.


Hill and Griffith Customer Service

We're known for our hands on approach. Let us visit your plant and recommend concrete release agents, packerhead concrete form releases, concrete form seasoning, potable water concrete form release, non-petroleum concrete form release, biodegradable concrete form release, rust inhibitors and concrete dissolver products that suit your needs.

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Bulletins and Technical Papers for Concrete Casting Products

 

Tags: Concrete Forms, Concrete Form Release Agents, Concrete Release Agents, Concrete Form Seasoning, Biodegradable Concrete Form Release, Concrete Casting Supplies, Concrete Pipe, Concrete Form Release, Portland Cement Assoc

Precast/Prestressed Concrete Institute Annual Design Awards for Transportation

Posted by Hill and Griffith Company on Feb 7, 2019 11:42:28 AM

PCI recognizes groundbreaking work by owners, designers, builders, and precast concrete system manufactures across the country.

The Precast/Prestressed Concrete Institute today announced the winning projects in the 2019 PCI Design Awards program. This year, a panel of judges awarded 17 projects and six honorable mentions across North America for excellence in design in transportation and building categories.

2019 PCI Design Awards Winning Projects – Transportation 
(Honorable Mentions will be included in the next newsletter)

Brigham Road 560

Main Span, 76-149 feet
Interstate 15 Brigham Road
St. George, Utah
Photo credit: Juan R. Sanchez / Forterra

Northwest Corridor Express Lanes 560

Main Span, more than 150 feet
Northwest Corridor Express Lanes
Marietta, Georgia
Photo credit: Aerial Innovations of Georgia Inc.

Mid Coast Corridor 560

Non-Highway Bridge
Mid Coast Corridor Retaining Walls
San Diego, California
Photo credit: Erick Aldrich

New NY Bridge Project 560

Special Solution
New NY Bridge Project (Gov. Mario M. Cuomo Bridge)
Tarrytown and South Nyack, New York
Photo credit: New York Thruway Authority

 

Transportation Jury:
Reggie Holt, FHWA
Bill DuVall, Georgia DOT
J.P. Binard, Precast Systems Engineering

 

Now in its 56th year, the PCI Design Awards showcase the creative and innovate uses of precast and prestressed concrete in a wide variety of structures.

The program demonstrates how designers are continuing to use high-performance precast, prestressed concrete to achieve sustainable, more cost-effective, aesthetically pleasing, and quickly-constructed projects.

“As an industry, precast concrete manufacturers have a long history of delivering high-quality, resilient, and beautiful building and infrastructure systems to the marketplace that enhance end users’ lives,” said PCI President and CEO Bob Risser, P.E. “The PCI Design Awards are one way we recognize the best of the best in structural and architectural design and building innovation.”

A panel of industry experts that includes precast concrete producers, engineers, and architects judges all nominees. The buildings and transportation categories are judged on aesthetic, structural, and use versatility; site, energy and operational efficiency, and risk reduction; and resiliency, such as structure durability, multi-hazard protection, and life safety and health.

PCI also selects several projects for special awards that are judged on similar criteria to the building and transportation projects, as well as additional requirements, including industry advancement, sustainable design, and designs using all-precast concrete solutions. These awards include the Harry H. Edwards Industry Advancement Award, The All-Precast Concrete Solution Award, and the Sustainable Design Award. Page 2 of 2

“We are proud of the time and rigor the judges put into judging the projects submitted for our Design Awards program,” Risser added. “The teams that delivered the winning projects should be extremely proud of their accomplishments, their contributions to the precast concrete industry, and, most importantly, to the communities in which their projects reside and affect the lives of the end-users.”

All winning projects will be showcased and honored at the PCI Convention in Louisville, Ky., on March 1, and will be published in PCI publications, including PCI Journal, Ascent, and Aspire magazines. Details and photos of all winning and honorable mention projects are available at the PCI website at pci.org.

Read the entire release.


About PCI

Founded in 1954, the Precast/Prestressed Concrete Institute (PCI) is a technical institute for the precast concrete structures industry. PCI develops, maintains, and disseminates the body of knowledge for designing, fabricating, and constructing precast structures. PCI provides technical resources, certification for companies and individuals, continuing education, as well as conducts research and development projects, conventions, conferences, awards programs, and much more. PCI members include precast concrete manufacturers, companies that provide products and services to the industry, precast concrete erectors, and individual members such as architects, consultants, contractors, developers, educators, engineers, materials suppliers, service providers, and students. To learn more, visit www.pci.org, or email Tom Bagsarian at tbagsarian@pci.org.


News from the Precast Concrete Institute

Precast Show, Louisville Feb 26 - Mar 2

High performance precast concrete inherently provides versatility, efficiency, and resiliency.

PCI Regional Affiliate Organizations


Hill and Griffith Customer Service

We're known for our hands-on approach. Let us visit your plant and recommend concrete release agents, packerhead concrete form releases, concrete form seasoning, potable water and non-petroleum concrete form release, biodegradable releases, rust inhibitors and concrete dissolver products that suit your needs.

Hill and Griffith Samples

Product Samples

We are pleased to provide samples in quantities large enough to allow you to "try before you buy."
Contact Us »

 

Hill and Griffith Customer Service

Technical Services & Support

On-site casting defect investigations, product testing, machine start-ups and much more. Also, lab facilities are available to provide testing upon request.
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Bulletins and Technical Papers for Concrete Casting Products 

Tags: Concrete Form Release Agents, Concrete Release Agents, Concrete Casting Supplies, Concrete Form Release, Precast Concrete Institute

Precast/Prestressed Concrete Institute Annual Design Awards for Buildings

Posted by Hill and Griffith Company on Feb 1, 2019 11:33:27 AM

PCI recognizes groundbreaking work by owners, designers, builders, and precast concrete system manufactures across the country.

The Precast/Prestressed Concrete Institute today announced the winning projects in the 2019 PCI Design Awards program. This year, a panel of judges awarded 17 projects and six honorable mentions across North America for excellence in design in transportation and building categories.

2019 PCI Design Awards Winning Projects – Buildings
(Awards for Transportation and Honorable Mentions will be included in future newsletters)

Museum of Fine Arts 560

Government and Public
Museum of Fine Arts, Glassell School of Art
Houston, Texas
Photo credit: Photography at Richard Barnes/2018

Cook Childrens Medical Center 560

Healthcare and Medical
Cook Children’s Medical Center, South Tower
Fort Worth, Texas
Photo credit: Steve Hall, Hall of Hall + Merrick

FIU Student Center 560

Higher Education/University
Florida International Univ. Student Academic Center
Miami, Florida
Photo credit: Gate Precast Company

Nelson Mandela Apartments  560

Multi Family
Nelson Mandela Apartments
Chicago, Illinois
Photo credit: Balloggphoto.com

Pinnacle Natl Development Ctr 560

Mixed Use
Pinnacle National Development Center
Kansas City, Kansas
Photo credit: Jacia Phillips Photography and Enterprise Precast Concrete

UofMiss North Parking 560

Parking Structure (All Precast Concrete)
Univ. of Mississippi North Parking Structure
Oxford, Mississippi 
Photo credit: Carl Walker, a division of WGI

St. John's Chapel 560

Religious
St. John’s Chapel and Mausoleum
Columbia, South Dakota
Photo credit: Gage Brothers 

Highland Park HS 560

Schools, K-12
Highland Park High School
Highland Park, Illinois
Photo credit: James Steinkamp Photography

Kyle Field Football Stadium 560 

Stadiums and Arenas
Texas A&M Kyle Field
College Station, Texas
Photo credit: Christy Radecic Photography

NU Ryan Fieldhouse 560 

Custom Solutions
Northwestern Univ. Ryan Fieldhouse & Walter Athletics Center Wave Wall
Evanston, Illinois
Photo credit: Utility Concrete Products LLC

 

Buildings Jury:
Marty Huie, Jacobs Engineering Group
Chris Mosley, Consulting Engineers Group
Roksana Taghizadeh, EnCon Design

 

Now in its 56th year, the PCI Design Awards showcase the creative and innovate uses of precast and prestressed concrete in a wide variety of structures.

The program demonstrates how designers are continuing to use high-performance precast, prestressed concrete to achieve sustainable, more cost-effective, aesthetically pleasing, and quickly-constructed projects.

“As an industry, precast concrete manufacturers have a long history of delivering high-quality, resilient, and beautiful building and infrastructure systems to the marketplace that enhance end users’ lives,” said PCI President and CEO Bob Risser, P.E. “The PCI Design Awards are one way we recognize the best of the best in structural and architectural design and building innovation.”

A panel of industry experts that includes precast concrete producers, engineers, and architects judges all nominees. The buildings and transportation categories are judged on aesthetic, structural, and use versatility; site, energy and operational efficiency, and risk reduction; and resiliency, such as structure durability, multi-hazard protection, and life safety and health.

PCI also selects several projects for special awards that are judged on similar criteria to the building and transportation projects, as well as additional requirements, including industry advancement, sustainable design, and designs using all-precast concrete solutions. These awards include the Harry H. Edwards Industry Advancement Award, The All-Precast Concrete Solution Award, and the Sustainable Design Award. Page 2 of 2

“We are proud of the time and rigor the judges put into judging the projects submitted for our Design Awards program,” Risser added. “The teams that delivered the winning projects should be extremely proud of their accomplishments, their contributions to the precast concrete industry, and, most importantly, to the communities in which their projects reside and affect the lives of the end-users.”

All winning projects will be showcased and honored at the PCI Convention in Louisville, Ky., on March 1, and will be published in PCI publications, including PCI Journal, Ascent, and Aspire magazines. Details and photos of all winning and honorable mention projects are available at the PCI website at pci.org.

Read the entire release.


About PCI

Founded in 1954, the Precast/Prestressed Concrete Institute (PCI) is a technical institute for the precast concrete structures industry. PCI develops, maintains, and disseminates the body of knowledge for designing, fabricating, and constructing precast structures. PCI provides technical resources, certification for companies and individuals, continuing education, as well as conducts research and development projects, conventions, conferences, awards programs, and much more. PCI members include precast concrete manufacturers, companies that provide products and services to the industry, precast concrete erectors, and individual members such as architects, consultants, contractors, developers, educators, engineers, materials suppliers, service providers, and students. To learn more, visit www.pci.org, or email Tom Bagsarian at tbagsarian@pci.org.


News from the Precast Concrete Institute

Precast Show, Louisville Feb 26 - Mar 2

PCI Precast Careers - Your Job-Search Solution

PCI Continuing Education


Hill and Griffith Customer Service

We're known for our hands-on approach. Let us visit your plant and recommend concrete release agents, packerhead concrete form releases, concrete form seasoning, potable water and non-petroleum concrete form release, biodegradable releases, rust inhibitors and concrete dissolver products that suit your needs.

Hill and Griffith Samples

Product Samples

We are pleased to provide samples in quantities large enough to allow you to "try before you buy."
Contact Us »

 

Hill and Griffith Customer Service

Technical Services & Support

On-site casting defect investigations, product testing, machine start-ups and much more. Also, lab facilities are available to provide testing upon request.
Contact Us »

 

Bulletins and Technical Papers for Concrete Casting Products 

Tags: Concrete Form Release Agents, Concrete Release Agents, Concrete Casting Supplies, Concrete Form Release, Precast Concrete Institute

Precast/Prestressed Concrete Institute Announces Industry’s Annual Design Awards

Posted by Hill and Griffith Company on Jan 30, 2019 9:47:41 AM

PCI recognizes groundbreaking work by owners, designers, builders, and precast concrete system manufactures across the country.

 

The Precast/Prestressed Concrete Institute today announced the winning projects in the 2019 PCI Design Awards program. This year, a panel of judges awarded 17 projects and six honorable mentions across North America for excellence in design in transportation and building categories.

2019 PCI Design Awards Winning Projects – Special 
(Awards for Buildings, Transportation and Honorable Mentions will be included in future newsletters)

Nassau County Police copy

All Precast Concrete Solution Award
Nassau County Police, 8th Precinct
Bethpage, New York
Photo credit: High Concrete Group LLC

Parking Structure 5, California State Univ. copy

Sustainable Design Award
Parking Structure 5, California State Univ.
Sacramento, California
Photo credit: Kyle Jeffers Photography

Glenstone Museum “The Pavilions”  copy

Harry H. Edwards Industry Advancement Award
Glenstone Museum “The Pavilions”
Potomac, Maryland
Photo credit: Iwan Baan

Special Awards Jury
John Circenis, Gensler
Monty Overstreet, FDG
Michael Koch, HGA

 

Now in its 56th year, the PCI Design Awards showcase the creative and innovate uses of precast and prestressed concrete in a wide variety of structures.

The program demonstrates how designers are continuing to use high-performance precast, prestressed concrete to achieve sustainable, more cost-effective, aesthetically pleasing, and quickly-constructed projects.

“As an industry, precast concrete manufacturers have a long history of delivering high-quality, resilient, and beautiful building and infrastructure systems to the marketplace that enhance end users’ lives,” said PCI President and CEO Bob Risser, P.E. “The PCI Design Awards are one way we recognize the best of the best in structural and architectural design and building innovation.”

A panel of industry experts that includes precast concrete producers, engineers, and architects judges all nominees. The buildings and transportation categories are judged on aesthetic, structural, and use versatility; site, energy and operational efficiency, and risk reduction; and resiliency, such as structure durability, multi-hazard protection, and life safety and health.

PCI also selects several projects for special awards that are judged on similar criteria to the building and transportation projects, as well as additional requirements, including industry advancement, sustainable design, and designs using all-precast concrete solutions. These awards include the Harry H. Edwards Industry Advancement Award, The All-Precast Concrete Solution Award, and the Sustainable Design Award. Page 2 of 2

“We are proud of the time and rigor the judges put into judging the projects submitted for our Design Awards program,” Risser added. “The teams that delivered the winning projects should be extremely proud of their accomplishments, their contributions to the precast concrete industry, and, most importantly, to the communities in which their projects reside and affect the lives of the end-users.”

All winning projects will be showcased and honored at the PCI Convention in Louisville, Ky., on March 1, and will be published in PCI publications, including PCI Journal, Ascent, and Aspire magazines. Details and photos of all winning and honorable mention projects are available at the PCI website at pci.org.

Read the entire release.


About PCI

Founded in 1954, the Precast/Prestressed Concrete Institute (PCI) is a technical institute for the precast concrete structures industry. PCI develops, maintains, and disseminates the body of knowledge for designing, fabricating, and constructing precast structures. PCI provides technical resources, certification for companies and individuals, continuing education, as well as conducts research and development projects, conventions, conferences, awards programs, and much more. PCI members include precast concrete manufacturers, companies that provide products and services to the industry, precast concrete erectors, and individual members such as architects, consultants, contractors, developers, educators, engineers, materials suppliers, service providers, and students. To learn more, visit www.pci.org, or email Tom Bagsarian at tbagsarian@pci.org.


News from the Precast Concrete Institute

The PCI Convention

Find a PCI Certified Plant

PCI Design Handbook, 8th Edition


Hill and Griffith Customer Service

We're known for our hands-on approach. Let us visit your plant and recommend concrete release agents, packerhead concrete form releases, concrete form seasoning, potable water and non-petroleum concrete form release, biodegradable releases, rust inhibitors and concrete dissolver products that suit your needs.

Hill and Griffith Samples

Product Samples

We are pleased to provide samples in quantities large enough to allow you to "try before you buy."
Contact Us »

 

Hill and Griffith Customer Service

Technical Services & Support

On-site casting defect investigations, product testing, machine start-ups and much more. Also, lab facilities are available to provide testing upon request.
Contact Us »

 

Bulletins and Technical Papers for Concrete Casting Products 

Tags: Concrete Form Release Agents, Concrete Release Agents, Concrete Casting Supplies, Concrete Form Release, Precast Concrete Institute

Prevent Concrete Bughole Surface Void Formation

Posted by Hill and Griffith Company on Jan 17, 2019 12:20:14 PM

Using concrete as an architectural material has brought the quality in surface appearance to an important consideration.

One of the problems affecting the surface aesthetics of concrete are bugholes. Bugholes are surface voids from the migration of mostly entrapped air to the fresh concrete form surface, mostly in the vertical plane.

preventing_bug_holes

Photo from Precast Inc. Magazine's May/June 2014 issue.


During setting, the shrinkage of the concrete forces entrapped air voids and excess water out of the mix. Water migrates upward due to density and becomes bleed water. The air bubbles seek pressure equilibrium and when in a vertical form, that's to the interior surface. These bubbles need to be directed vertically to the surface of the concrete form. Bugholes are found in the upper portion of the concrete structure or at angled form surfaces as a result of accumulation of escaping air along the height of the structure. They are primarily an aesthetic problem for exposed surfaces.

Causes

The biggest cause of bugholes is improper vibration. Consolidation through vibration, sets the bubbles into motion and sends both entrapped air and excess water to the surface.

Bughole formation can also be caused by the form material and the type of form release used.

When a chemically reactive form release agent is used, a nonviolent chemical reaction takes place when fatty acids react with free lime on the surface of fresh concrete. This reaction results in the formation of a metallic soap, a slippery material that allows air bubbles to rise along the vertical surface. This “soapy” film also prevents the hardened concrete from adhering to the forms during stripping.

Thicker coatings on forms are typical of the older barrier-type materials, like heavyweight used motor oil, vegetable oils, diesel fuel and kerosene. Barrier type release agents are less expensive than chemically reactive agents, but they are not generally recommended for reducing SCC bug holes."

Mix design can also contribute to bughole formation. A sticky or stiff mixture that is hard to consolidate can increase surface void formation.

Reduce Bugholes

Solutions

The vibrator should penetrate the previous lift and work the entrapped air towards the form and then up the sides. More vibration is necessary with impermeable forms, to move the air voids to the free surface of the concrete.

Flowing mixtures reduce bughole formation. Concrete that limits excessive fine aggregate, has the proper cement content, and uses admixture for increased flow contributes to bughole reduction. Self-consolidating concrete is becoming increasing popular for precast to improve surface quality.

Bugholes are not detrimental to structural concrete. But, with the increased use of concrete in finished construction, surface quality is important. Through careful selection of materials, quality workmanship, and dutiful supervision, surface voids can be minimized.

Learn more, "Concrete Bug Hole Prevention"

Causes & Fixes for SCC Bug Holes


Hill and Griffith Customer Service

We're known for our hands-on approach. Let us visit your plant and recommend concrete release agents, packerhead concrete form releases, concrete form seasoning, potable water and non-petroleum concrete form release, biodegradable releases, rust inhibitors and concrete dissolver products that suit your needs.

Hill and Griffith Samples

Product Samples

We are pleased to provide samples in quantities large enough to allow you to "try before you buy."
Contact Us »

 

Hill and Griffith Customer Service

Technical Services & Support

On-site casting defect investigations, product testing, machine start-ups and much more. Also, lab facilities are available to provide testing upon request.
Contact Us »

 

Bulletins and Technical Papers for Concrete Casting Products 

Tags: Concrete Form Release Agents, Concrete Release Agents, Concrete Casting Supplies, Concrete Form Release, American Concrete Institute, Concrete Bugholes, Bug Hole

"Form Release Agents," Technical Q&A from the American Concrete Institute Review

Posted by Hill and Griffith Company on Jan 11, 2019 5:05:58 PM

ACI committees, membership, and staff have answered common questions on a variety of concrete related topics

Form release agents

Q. I need to select a form release agent for a new project requiring an architectural finish. Can you provide information on different types of form release agents and recommendations for using them? Does ACI have a publication on form release agents I could use as a reference?

American Concrete Association Form Release


A. Form release agents ease formwork removal, extending the useful life of a form and improving the smoothness and texture of concrete surfaces. Two main types are available: barrier and chemically active.

Barrier-type agents (examples include diesel oil, wax, and silicone) create a barrier between the form and the concrete. These are not recommended for architectural concrete, because they can cause stains, surface air voids, and problems with form removal in very cold or very hot weather; they also may prevent subsequent adhesion of coatings to the hardened concrete. While diesel oil was once commonly used, it’s now prohibited because the associated volatile organic content (VOC) emissions contribute to smog. (Note: In the United States, form release agents have to meet federal VOC limits of 450 g/L [3.8 lb/gal.] and may have to meet more restrictive limits of 250 g/L [2.2 lb/gal.] in some states.)

Chemically active form release agents (certain types of fatty acids) react with calcium ions in the cement paste to produce a soap that prevents concrete from bonding to the formwork. Based on the reactivity, they are divided into buffered (partially) reactive and fully reactive. Buffered agents produce an improved soap film that helps remove entrapped air and may promote better flow of a thin skin of cement paste at the surface of the form. Fully reactive agents can provide a good basic soap film that, depending on the brand, works well in most cases. Because chemically active form release agents produce fewer bugholes, stains, and surface irregularities than barrier type of form release agents, they are commonly used for architectural concrete.

For more information on this topic refer to ACI 347R “Guide to Formwork for Concrete”, ACI 303R “303R-12 Guide to Cast-in-Place Architectural Concrete Practice”, and ACI 533R “Guide for Precast Concrete Wall Panels”.

References: ACI 347R-14; ACI 303R-12; ACI 533R-11


Hill and Griffith Customer Service

We're known for our hands-on approach. Let us visit your plant and recommend concrete release agents, packerhead concrete form releases, concrete form seasoning, potable water and non-petroleum concrete form release, biodegradable releases, rust inhibitors and concrete dissolver products that suit your needs.

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Product Samples

We are pleased to provide samples in quantities large enough to allow you to "try before you buy."
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Technical Services & Support

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Bulletins and Technical Papers for Concrete Casting Products 

Tags: Concrete Form Release Agents, Concrete Release Agents, Concrete Casting Supplies, Concrete Form Release, American Concrete Institute

What is concrete release agent form oil made of?

Posted by Hill and Griffith Company on Jan 3, 2019 1:56:40 PM

There are three types of concrete release agents. They are very different in their cost, use and composition.

Concrete form release agents prevent the adhesion of concrete to the forming surface, usually plywood, steel or aluminum. In this application, there are three types of release agents available: barrier, reactive and water based.

Biodegradable Concrete Form Release Agents 2 copy

"The thinner the better," is the best application motto for concrete form releases.


• Barrier oil based release agents develop a physical film between the form and the concrete.

• Reactive release agents are chemically active and work by the process of a chemical reaction between the release agent and the free limes available in concrete. A soapy film is created which prevents adhesion. There is generally little to no residue or unreacted product left on the forming surface or concrete which provides for a cleaner release.

• Water-based release agents are a result of more focus on health, environment and safety issues. This has resulted in the development of new technologies primarily focused on water-based formulations, with the movement being away from petroleum-based products.

Learn more by reading Bob Waterloo's article, "How Safe (and Legal) is Your Concrete Form Release Agent?" Which ran in PRECAST INC Magazine. Bob Waterloo is the distribution manager, the Hill and Griffith Company. For additional information, contact him at bwaterloo (at) hillandgriffith.com.

Hill and Griffith Customer Service

We're known for our hands-on approach. Let us visit your plant and recommend concrete release agents, packerhead concrete form releases, concrete form seasoning, potable water and non-petroleum concrete form release, biodegradable releases, rust inhibitors and concrete dissolver products that suit your needs.

Hill and Griffith Samples

Product Samples

We are pleased to provide samples in quantities large enough to allow you to "try before you buy."
Contact Us »

 

Hill and Griffith Customer Service

Technical Services & Support

On-site casting defect investigations, product testing, machine start-ups and much more. Also, lab facilities are available to provide testing upon request.
Contact Us »

 

Bulletins and Technical Papers for Concrete Casting Products 

Tags: Concrete Forms, Concrete Form Release Agents, Concrete Release Agents, Concrete Casting Supplies, Concrete Form Release, concrete release removal

Do I need to remove concrete form release from rebar?

Posted by Hill and Griffith Company on Dec 28, 2018 4:40:27 PM

No. A common misunderstanding in the concrete industry is clarified in this review of an article from ForConstructionPros.com.

Question: On several of our most recent projects, the inspector has been complicating our pour schedule when finding form oil over-sprayed on the rebar. Is it our misunderstanding that form oil on rebar shouldn’t pose a problem to the performance or the acceptance of our pre-pour inspection?

concrete_potable_water-tower


Answer: Your question addresses a common problem across the construction industry. Code edition after code edition presents challenges throughout the industry to remain current with the latest acceptable practices. This is a question of appropriate code reference — ACI 332 — rather than ACI 318, and of referencing the most recent version, ACI 332-10, instead of older versions -04 or -08.

Stated in section 4.2.4 of ACI 332-10, the code provides:

"4.2.4 Surface conditions of reinforcement—At the time concrete is placed, deformed bar and welded wire reinforcement shall be free of materials deleterious to development of bond strength between the reinforcement and the concrete."

"R4.2.4 Common surface contaminants such as concrete splatter, rust, form oil, or other release agents have been found not to be deleterious to bond."

First, during construction, nothing should be found on the reinforcement that would adversely affect the bond strength of the reinforcement in the concrete. Second, what common site conditions found on rebar are not to be considered deleterious to bond. Form oil is a surface contaminant that is not considered deleterious to bond.

Deformed bar and welded wire are designed to achieve a mechanical bond with the concrete rather than a chemical or adhesive bond. The mechanical bond relies on a keying action with the deformations along the length of the reinforcement bar. As long as the surface contaminants do not effectively eliminate the presence of those deformations, they would not be considered deleterious to bond.

ACI 332-10 is available through the bookstore at www.concrete.org.

To read the full article about concrete form oil on rebar go to, "Oil on Rebar."


Hill and Griffith Customer Service

We're known for our hands-on approach. Let us visit your plant and recommend concrete release agents, packerhead concrete form releases, concrete form seasoning, potable water and non-petroleum concrete form release, biodegradable releases, rust inhibitors and concrete dissolver products that suit your needs.

Hill and Griffith Samples

Product Samples

We are pleased to provide samples in quantities large enough to allow you to "try before you buy."
Contact Us »

 

Hill and Griffith Customer Service

Technical Services & Support

On-site casting defect investigations, product testing, machine start-ups and much more. Also, lab facilities are available to provide testing upon request.
Contact Us »

 

Bulletins and Technical Papers for Concrete Casting Products 

Tags: Concrete Forms, Concrete Form Release Agents, Concrete Release Agents, Concrete Casting Supplies, Concrete Form Release, concrete release removal

Happy Holidays!

Posted by Hill and Griffith Company on Dec 20, 2018 1:06:28 PM

Season's Greetings from our family to yours.  

HG SALES MEETING DECEMBER 2018

Hill and Griffith's Management & Sales Team 


Google News about how Santa Claus upgraded his factory this year to meet higher demand

Santa Claus Foundry 2

Dodge Gives Santa a Rockin' Sleigh With Real Hellcat Redeye Power for Holiday Ad Campaign

Harper Precast Christmas

Happy Holidays from Harper Precast's Facebook Page

Santa Claus Foundry 4Santa Claus Foundry 3

Saint Nicholas and the Origin of Santa Claus


Hill and Griffith Customer Service

We're known for our hands-on approach. Let us visit your plant and recommend concrete release agents, packerhead concrete form releases, concrete form seasoning, potable water and non-petroleum concrete form release, biodegradable releases, rust inhibitors and concrete dissolver products that suit your needs.

Hill and Griffith Samples

Product Samples

We are pleased to provide samples in quantities large enough to allow you to "try before you buy."
Contact Us »

 

Hill and Griffith Customer Service

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Safety Data Sheet Regulations for Concrete Form Releases

Posted by Hill and Griffith Company on Dec 14, 2018 4:21:30 PM

The New Globally Harmonized System: The Right to Know

Are you or your employees at risk?

New rules, new regulations for concrete form releases. It seems that we are faced with these on an almost daily basis. If you are not up to date, you and your employees could be at risk, and your company could be facing penalties. The United States, in conjunction with other nations, has agreed to new rules regarding employee rights and need to know concerning hazardous materials (previously covered in Material Safety Data Sheets, or MSDSs). The new reference will be called Safety Data Sheets (SDSs).

We use many materials in the precast industry, and many of them have given us better castings – but always at a price. That price often comes in the form of special care and handling of materials that are classified as hazardous, including those that are considered flammable or combustible, or cause irritation, sensitivity, corrosion, and are proven or suspected carcinogens. Part of our responsibility is to help reduce the threat, whether minor or serious, to our workers and the environment. OSHA commonly refers to it as “the right to know.”

You are probably already aware of the new rules and regulations regarding SDSs and the training necessary to comply with the new Globally Harmonized System (GHS). This applies not just to precast suppliers, but the precast producer is also responsible for complying with certain regulations including training.

GHS Label Elements

In making a brief survey of precast and pipe producers, I found that while they are generally somewhat aware, most do not realize the full scope of the new regulations. Here is a quick overview of the GHS.

First, the MSDS is a thing of the past. It is now being replaced by the SDS, and while the format is very similar, there are some significant changes. You will need to have SDSs from all of your suppliers. Some states will have additional requirements, although they are not necessarily addressed here. 

June 1, 2015, is the time for everything to be in place. An additional review of the policies will occur June 1, 2016, after which there may be additional changes. However, some of the laws are already in effect. If you are not in compliance with them yet, you will need to move quickly. 

The Employer is responsible for:  

  • Identifying and maintaining a list of hazardous chemicals known to be present at the plant

  • Obtaining, keeping up to date and providing employee access to SDSs

  • Being sure that all hazardous materials are properly labeled

  • Presenting a training program for all employees who will be exposed to these hazardous materials

  • Having a written hazardous communication program in place

  • Having SDS information available to employees and ensuring they have access to the company training program

  • Ensuring that employees read and understand the SDSs and the label on the containers of all hazardous material

Perhaps the first area of concern to producers is the fact that employee training of the new GHS was to be completed by Dec. 1, 2013. If you haven’t already done so, now is the time to do it. 

Your training program must include:

  • The requirements of the standard

  • Places where hazardous chemicals are present in your work area

  • The location and availability of the written program, the chemical inventory and the SDSs

  • How to access the SDSs in your work area

  • How to read the SDSs

  • How to read the GHS-style container labels

  • Any specific labeling used in-house if different from the standards

  • Specific hazardous chemicals in the employees’ immediate work areas

  • How to detect the presence of a release of a hazardous chemical

  • The physical and health hazards of those chemicals

  • Measures you can use to protect yourself against these hazards

  • Required personal protective equipment (PPE) available and how to use it 

Next, you must have a written program and a list of all SDSs spelled out in the program.

All SDSs must be in English (worldwide), and additional languages also must be available to convey to employees in their native language or a language they understand. The manufacturer of the hazardous material is responsible only for supplying the SDS in English, so you are responsible for any additional languages.

Materials that fall under the GHS include: 

  • Health hazards

  • Physical hazards

  • Environmental hazards 

  • Hazards not other classified

  • Other hazardous chemical 

Hazard Warning Levels

Any material falling under the “hazardous” classification must have the following information on the label:

• Product identification
• Pictogram
• Signal word
• Hazard statement(s)
• Precautionary statement(s)
• Name, address and telephone number of the chemical 
manufacturer, importer or other responsible party 

Hazard Warning Labels

While there is no specific format for the label, all of the above must be clearly shown.

Pictograms are also required for quick identification of the hazard. On the SDS itself, there will now be a total of 16 sections – all of which must be completed for any material that falls under the hazardous classification: 

1. Identification

2. Hazard(s)identification

3. Composition/information on ingredients

4. First-aid measures

5. Firefighting measures

6. Accidental release measures

7. Handling and storage

8. Exposure controls/personal protection

9. Physical and chemical properties

10. Stability and reactivity

11. Toxicological information

12. Ecological information

13. Disposal considerations

14. Transport information

15. Regulatory information

16. Other information (including date of preparation or last revision) 

 

As a final note, all hazardous materials in your workplace must be cross-referenced by supplier and/or manufacturer.

These new OSHA regulations place an additional burden not only on the manufacturer/distributor, but also on the end user– you! Owners and operators are now responsible for keeping employees aware of any hazardous material on the premises, and all new employees must go through this training before being allowed in the workplace. OSHA will likely ask about the GHS in your workplace and assess stiff fines for not being in compliance.

The National Precast Concrete Association offers its members a free webinar titled “Webinar: Guide to Globally Harmonized System Documentation” by logging on to precast.org/ education.


Concrete Form Release SDS paper 3-14 

By Bob Waterloo, published in the March/April 2014 issue of PRECAST INC.

Bob Waterloo is Technical Sales Manager, Concrete Release Agents, Hill and Griffith Co., based in Cincinnati. For additional information, contact him at bwaterloo@hillandgriffith.com

The online Precast Inc. magazine article is available at: precast.org/2014/03/new-globally-harmonized-system-right-know/.

For a PDF of this article, click here or on the image.


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Bulletins and Technical Papers for Concrete Casting Products 

Tags: Concrete Forms, Concrete Form Release Agents, Concrete Release Agents, Concrete Casting Supplies, Concrete Pipe, Concrete Form Release, Saftey Data Sheet

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