新拌混凝土均匀度的超声检测  

Ultrasonic testing of fresh concrete uniformity

作　　者：孙采鹰[1] 张孟喜 张飞[1] 王金明[1] 张英慧 SUN Caiying;ZHANG Mengxi;ZHANG Fei;WANG Jinming;ZHANG Yinghui(School of Information Engineering,Inner Mongolia University of Science and Technology,Baotou 014000,China;Department of Computing,Univerity of Northampton,Northampton NN15PH,UK)

机构地区：[1]内蒙古科技大学信息工程学院,包头014000 [2]北安普顿大学计算机学院,北安普顿NN15PH

出　　处：《无损检测》2024年第2期10-14,共5页Nondestructive Testing

基　　金：内蒙古自然科学基金(2021MS06008)。

摘　　要：混凝土均匀度检测是混凝土施工质量控制中的关键技术之一。基于超声技术开展了不同搅拌时间下的新拌混凝土均匀度检测试验,得出不同点位的混凝土密度,从而计算出不同搅拌时间下混凝土的均匀度指数。试验结果表明,新拌混凝土使用单卧轴搅拌机的合理搅拌时间为100~150 s,通过分析3种拟合函数的回归曲线与实测关系曲线的符合程度,确定了符合程度较高的专用均匀度检测曲线拟合函数。由此可见,超声技术可有效检测混凝土的均匀度,在一定程度上可指导新拌混凝土的现场施工。Concrete uniformity testing is one of the key technologies in concrete construction quality control.Based on ultrasonic technology,uniformity testing experiments were conducted on fresh concrete at different mixing times to obtain the density of concrete at different points and calculate the uniformity index of concrete at different mixing times.The experimental results showed that the reasonable mixing time for fresh concrete using a single horizontal axis mixer was 100⁃150 seconds.By analyzing the degree of conformity between the regression curves of three fitting functions and the measured relationship curves,a specialized measurement uniformity curve fitting function with a higher degree of conformity was determined.According to this,it can be seen that ultrasonic technology can effectively detect concrete uniformity and to some extent guide the on⁃site construction of fresh concrete.

关 键 词：新拌混凝土 均匀度 超声波检测 搅拌时间 密度 

分 类 号：TG115.28[金属学及工艺—物理冶金]