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Occurrence Analysis of Cracking Concrete Floor Caused by Alkali-Aggregate Reaction

In order to find the reason of concrete cracking in some construction. The mechanical property and micro-analysis of cores were tested, which drilled from cracked concrete floor. The test results indicated that alkali–aggregate reaction occurred, leading to the cracks in concrete floor. X-ray diffraction and scanning electron microscope facilitate the occurrence analysis and evaluation of cracked concrete.