July 26, 2011 – A decision to use lightweight aggregates rather than normal-weight aggregates is not as difficult as one might imagine as long as there are enough facts on which to base the decision. There are many factors to consider when evaluating lightweight structural concrete for a precast project. Important considerations might include many of the following questions in order to make an informed business decision:
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How much weight reduction can be expected?
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Are there structural concerns?
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Will coarse lightweight aggregate cost more money?
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Will significant adjustments to batching and mixing procedures need to be made?
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How will using lightweight coarse aggregate affect current quality control practices?
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