New ASTM cement standard simulates shearing by cement paste

Source: ASTM International, West Conshohocken, Pa.

A new standard, ASTM C1738, Practice for High-Shear Mixing of Hydraulic Cement Pastes, provides for preparing a mixture of cement paste that will simulate the shearing experienced by the cement paste in concrete, and was developed by Subcommittee C01.22 on Workability, part of ASTM's Committee C01 on Cement.

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Lafarge marks Canada’s National Precast Day with Habitat home plan

Sources: Lafarge North America, Reston, Va.; Staff reports

During an October 4 open house that drew 500 students, architects and engineers to its Edmonton precast plant, Lafarge announced participation in a local Habitat for Humanity NetZero energy duplex project.

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Alternative energy sources prove beneficial in reducing GHGs

A study released recently by an independent research center reveals using household garbage, tires, and even plastic to manufacture cement would produce fewer greenhouse gases and reduce the amount of waste sent to landfill than the fossil fuels currently used. Conducted by the London, Ontario-based Network for Business Sustainability, a non-profit research group based at the Richard Ivey School of Business, the study reviewed the last 10 years of academic and industry research.

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Research confirms cement industry’s energy thrift

An Environmental Protection Agency-commissioned survey finds energy intensity in cement production dropped 13% from 1997–2007. Duke University researchers compared producer-collected energy usage data against Department of Commerce figures, confirming a 1%-plus improvement trend per year to factor into EPA’s cement industry energy curve. The power savings equate to a reduction of almost 1.5 million metric tons of energy-related carbon.

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