Concrete coring is usually performed when there is a question about the in-place strength or quality of concrete in a structure. Concrete test cylinders may have exhibited low strengths in laboratory testing or the material in place could be showing signs of deterioration.
Asphalt coring is regularly performed as a part of ongoing quality control/quality assurance activities. The asphalt cores are tested for strength and flow characteristics, along with the thickness and asphalt bitumen content.
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