Durlach Industries strives to save time each “step” to project delivery

Palmetto, Fla.-based Durlach Industries has specialized in precast stairs and landings for 20-plus years, shipping product up and down the East Coast. Leading its current project roster is SunSeeker in Port Charlotte, Fla., a prime example of the producer’s fabrication capabilities and time-saving approach to construction schedules. The resort will feature approximately 500 hotel rooms, 180-plus extended stay suites, 55,000…

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Research contrasts resistivity test vs. w/c ratio to gauge permeability

Sources: Ready Mixed Concrete Research & Education Foundation, Alexandria, Va.; CP staff

A new RMC Research Foundation report based on work at the National Ready Mixed Concrete Association’s College Park, Md. laboratory addresses the lack of a consistent and cost-effective concrete permeability test method. “Reliability of Resistivity Tests of Concrete” authors evaluate mix design and specimen preparation factors that impact resistivity measurement; their conclusions can be incorporated in standards driving agency and engineer specifications in public and private concrete construction.

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Optimizing Mixtures report advances paste-to-void, rejects minimum CM specs

Sources:国家准备混合Concrete Association, Silver Spring, Md.; CP staff

A new report on results of concrete mixtures testing at NRMCA’s College Park, Md., research laboratory underscores optimized cement paste volume and paste-to-void ratio as key factors behind fresh and hardened specimens’ improved performance characteristics.

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