This 240-V breaker is light, quick, and strong, providing efficient concrete breaking.
Sym-Ply is a hand-ganged, imperial clamp forming system rated at 1500 psf.
We're soon starting a job that calls for structural lightweight concrete. How does this material differ from normal weight concrete and what should we be prepared for in working with it?
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The following four proposed new standards are among those currently being developed by subcommittees under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates.
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A Kansas DOT research project used three types of lightweight aggregate to develop lightweight concrete mixtures for a bridge deck and for prestressed bridge girders.
When even lower unit weight concrete is needed, or higher insulation value, cellular concrete is the solution.
Elemix concrete additive consists of innovative polymeric spheres specially formulated for use in concrete.
It's possible that you as a contractor will never have to face up to the problems that air entrainment can cause when it's either too high or too low in concrete.
Placing and finishing lightweight concrete can be a tricky and risky task. Success requires teamwork from the owner, architect/engineer, general contractor, ready-mix producer, and concrete contractor.
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What's the nominal weight of standard concrete?
Geofoam SP enables the production of pervious cellular lightweight concrete from 20 to 40 lbs./cu.-ft.
Five years ago, Dennis Lura took it upon himself to build a roller screed suitable for large jobs, yet one that a small crew could handle. Other contractors who borrowed the screed were impressed and thus, the Lightning Strike roller screed by Lura Enterprises was born.
Featuring a non-slip grip, the Billy Banger is small, lightweight stamping tool, allowing it to fit into tight areas.
The Power Pole Finisher lets workers finish concrete slabs from outside the formed area.
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Is it permissible to use synthetic aggregate produced from FGD sludge in lightweight concrete?
Broadcast onto the surface, aggregate can give concrete unique characteristics.
Air entrainment in concrete was discovered accidentally about 70 years ago. Since then, entrained air has provided many blessings to concrete such as increased workability at lower water-cement ratios and reduced bleeding. And there is its primary function: maximizing the resistance of hardened...
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Lightweight-aggregate, air-entrained concrete is increasingly used to cast interior, above-grade floors. There are two principal reasons for its use: cost savings and fire resistance. According to John Ries, executive director of the Expanded Shale, Clay and Slate Institute (ESCSI), Salt Lake City...
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From our perspective, the article as well as the response by Mr. Ahal makes excellent points in addressing the issue of finishing lightweight concrete. However the real issue as we see it is not finishing lightweight concrete but finishing air-entrained concrete.
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The January 2005 issue of Concrete Construction included an article entitled “Finishing Lightweight Air-Entrained Concrete.” In response to that article, the American Society of Concrete Contractors Technical Review Committee sent a letter to all ASCC members and to all members of ACI Committee 302...