【摘要】 制作了两组强度等级22块混凝土的试件,对处于7、14、28d的试件分别用回弹法检测了混凝土的强度,同时用超声回弹法检测其强度,并与实测砼强度、理论强度进行了对比分析。根据测试情况及强度对比情况,指出了在检测不同强度等级、不同龄期的混凝土强度时存在的一些问题,并提出了相应的改进措施。更多还原

【Abstract】 22 concrete experimental pieces of different grade were made firstly,the concrete strength is tested by rebound method separately on 7,14 and 28 days,simultaneously the concrete strength is tested by ultrasonic wave and rebound method test,then the practical strength is compared with the theoretic strength.Based on the test result and the contrast result of the strength,some problems of the strength test of different grade and different age are put forward,and some optimization measures are introduced.更多还原