【摘要】 介绍了水泥砂浆和混凝土环式限制收缩开裂测试标准方法ASTM C 1581—04及其评定指标制定的依据。并在实验室用此方法对不同配合比的混凝土进行了测试和评估。试验过程和结果表明ASTM C 1581—04试验方法有很高的可行性,能较准确的评价混凝土材料的抗开裂性能。更多还原

【Abstract】 Introduced ASTM standard test method for determining age at cracking and induced tensiles tress characteristics of mortar and concrete under ring restrained shrinkage,and the basis of establishment for evaluation index.Different mixtures had been tested and evaluated using the method.The process and result showed ASTM C 1581—04 was feasible and could exactly evaluate the resistant cracking capability of concrete.更多还原