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2015 Concrete Sustainability Conference

NRMCA is seeking proposals for presentations at the 2015 International Concrete Sustainability Conference. The 10th annual conference will provide learning opportunities on the latest advances, technical knowledge, continuing research, tools and solutions for sustainable concrete design, manufacturing, and construction. More

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Local Aggregate Unsuitable for Fire Enduranceuxrqqcrsxeybwdzwucufxsrfqxwttece

For a job in New Mexico we must site-cast some double-tees. The coarse aggregate in the area contains 61 percent free silica but the Underwriters Laboratories permits no more than 20 percent free silica for fire endurance. Is there any way to treat the ag More

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