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Axim develops WR, AE agents and methods for roller compacted mixes

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Published: Wednesday, 02 March 2011 17:08
Written by Concrete News

Source: Axim Italcementi Group, Middlebranch, Ohio

Axim has announced two admixture developments for roller compacted concrete: A synthetically manufactured, water-reducing and set control agent, Catexol MegaPact is formulated to impart greater flexural strength, better uniformity, increased durability, and reduced shrinkage characteristics, thereby easing placement and augmenting compaction.

Read more: Axim develops WR, AE agents and methods for roller compacted mixes

Cement production hits 28-year low

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Published: Wednesday, 02 March 2011 17:04
Written by Concrete News

Sources: U.S. Geological Survey; Rock Products

USGS reported its final 2010 domestic cement statistics, confirming the historically weak consumption levels in Portland Cement Association forecasts. Last year saw about 61 million tons of portland cement and 1.8 million tons of masonry cement produced at 102 plants in 36 states, plus two plants in Puerto Rico. Overall production was the lowest since 1982 and reflected continued plant closures or indefinite shutdowns.

Read more: Cement production hits 28-year low

Holcim Canada commercializes 15 percent ground-limestone powder

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Published: Wednesday, 02 March 2011 17:03
Written by Concrete News

Sources: Holcim Canada, Mississauga, Ontario; CP staff

On the heels of Canadian Standards Association approval and National Building Code of Canada reference, a new class of portland-limestone cement (PLC) has been recognized in Ontario and Quebec building codes as an alternative to ASTM C150-equivalent or CSA General Use powder.

Read more: Holcim Canada commercializes 15 percent ground-limestone powder

Contractors support counterbalance to feds’ project labor agreement bias

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Published: Wednesday, 02 March 2011 17:01
Written by Concrete News

Sources: Associated Builders and Contractors, Washington, D.C.; CP staff

The Government Neutrality in Contracting Act introduced by Rep. John Sullivan (R.-Okla.), notes 2011 ABC National Chairman Michael Uremovich (Great Lakes Energy Consultants), "Will guarantee that all qualified contractors and skilled workers, regardless of labor affiliation, have an equal opportunity to bid on and construct federal and federally assisted construction projects … [and] help taxpayers get the best possible construction project at the best possible price by increasing competition, reducing waste and eliminating favoritism in federal contracting."

Read more: Contractors support counterbalance to feds’ project labor agreement bias

Labor Board presses Operating Engineers in record RCC job’s safety flap

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Published: Wednesday, 02 March 2011 16:59
Written by Concrete News

Source: National Labor Relations Board, Washington, D.C.

In a brief before the U.S. Court of Appeals for the District of Columbia Circuit, NLRB General Counsel seek enforcement of an April 2010 order that Operating Engineers Local 513, Bridgeton, Mo., cease action against a foreman who cited a fellow member for safety violations.

Read more: Labor Board presses Operating Engineers in record RCC job’s safety flap

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