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We manufacture precast concrete site furnishings with fiberglass molds. We currently use a sticky-back foam on the flanges. But we are still having leakage at the seam. The forms are keyed and bolted together at a 3-inch spacing. Is there a material we can use in place of the sticky tape that will...
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When I look at the mill test report for my Type I portland cement, the chemical composition section listed a value of 21% silicon dioxide. Does this mean there dangerous levels of respirable silica in the cement?
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A customer asked our field rep whether there is an allowable time limit for successive concrete placements during a monolithic pour? I think the customer was asking this in reference to cold joints.
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