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Q: We plan to bid on some state bridge deck work planned in our area. Our district engineer is open to allowing a high-performance mix that will help mitigate the possibility of undue cracking. Our lab is analyzing several mixes with standard features such as strength, set time, and chloride...
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The 52-story Wachovia Corporate Center is the focal point of the new mixed-use Wachovia Cultural Campus, which will include a 42-story condominium tower, art museums, and 1200-seat performing arts theater. The two towers, along with a nine-story building annex, sit atop an eight-story parking...
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We are involved in a dispute on the quality of a decorative slab for which we supplied concrete last fall. The project appears to be fine, but one set of test cylinders failed to meet compressive strength requirements.
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We recently supplied several split-face blocks for a large commercial project. The work continued for several months, and with about two weeks left, we started receiving complaints about the quality of the units from the mason contractor.
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Modern technology and automation have finally entered the concrete testing laboratory. Several technical committees have updated traditional standards to accommodate this new technology.
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Concrete strength testing is a much larger problem for ready-mix producers than many in the industry realize.
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QC managers say testing labs often fail to follow correct procedures. The burden of proof of good performance falls to the producer.
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ASTM C-1644-06 provides guidance on connectors between concrete wastewater tanks and pipes.
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Compressive strength is one of the most important measurements in manufacturing concrete. As a producer, I need to know whether this measurement is accurate. How can I be sure my concrete compressive strength results are correct?
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