【摘要】 针对1500~1800密度等级轻集料混凝土,进行了系统的回弹法测强曲线的研究。试验结果表明:JGJ/T 23—2001《回弹法检测混凝土抗压强度技术规程》中统一测强曲线直接用以检测轻集料混凝土强度时,所得的强度换算值会偏高,导致结构安全系数降低;建立起了1500~1800密度等级强度等级范围为LC15~LC50的轻集料混凝土回弹法测强专用曲线,其平均相对误差小于12.0%,相对标准误差小于14.0%,符合JGJ/T 23—2001《回弹法检测混凝土抗压强度技术规程》对专用曲线的误差要求。更多还原

【Abstract】 The rebound method for 1 500~1 800 density grade and LC15~LC50 lightweight aggregate concrete is studied.The result shows that the common testing strength curve by Technical Specification for Inspection of Concrete Compressive Strength by Rebound Method in JGJ/T 23—2001 can’t satisfy the accuracy of testing lightweight aggregate concrete strength.The specific compressive strength curves for testing lightweight aggregate concrete of 1 500～1 800 density grade by rebound method are obtained.更多还原