On The Material Evaluation Method for the Measure Against Reduction of Thermal Stress

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Since cracks induced by thermal stress or shrinkage stress cause initial defects in concrete structures, measures against the cracks have so far been taken by material used, construction methods, and so forth. This research evaluated reduction effect of thermal stress using a temperature-stress testing machine (TSTM) when expansive admixture or shrinkage-reducing agent was added to low heat portland cement. Furthermore, effective Young's modulus used for thermal stress analysis was calculated based on test results.
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