【摘要】 采用天津地区常用材料制作碎石混凝土试块,进行超声回弹试验和压力试验,采集相关数据,进行4种函数模型的拟合回归,建立了天津地区碎石混凝土的超声回弹综合法地方测强曲线并进行了验证,误差分析和验证结果表明所建曲线满足相关规程的要求,为天津地区混凝土超声回弹综合法测强提供了可靠保证。更多还原

【Abstract】 The ultrasonic-rebound test and pressure test for the rubble concrete specimens that are prepared with the common materials of the Tianjin area were performed.Based on the results of the tests,the ultrasonic-rebound-strength local curve for rubble concrete in the Tianjin area is established on the regression with four different function models.The results of the error analysis and the curve validity checking show that the local curve can satisfy the needs of the regulations concerned,and that the local curve offers reliable guarantee for the ultrasonic-rebound synthetic method to be used in the Tianjin area.更多还原