新型超声回弹地区测强曲线试验研究  

Research on new ultrasonic rebound strength curve for concrete strength measurement

作　　者：徐金涛[1] 岳强[1] 安笑 

机构地区：[1]山东农业大学水利土木工程学院,山东泰安271018 [2]山东泰安市交通运输局,山东泰安271000

出　　处：《混凝土》2016年第2期128-130,133,共4页Concrete

基　　金：国家科技支撑计划项目(2015BAB07B05);山东省自然科学基金项目(ZR2013EEM002);山东省交通科技项目(2013A09-04)

摘　　要：以泰安地区常用原材料制作混凝土立方体试块,使用NM-3C型非金属超声波检测仪和ZC3-A型回弹仪,通过试块超声回弹和抗压强度试验,采用超声回弹综合法探究超声波振幅值、声速值和回弹值与混凝土强度关系,建立以振幅值、声速值和回弹值三项为指标的新型超声回弹地区测强曲线。结果表明:混凝土强度与振幅值、波速值和回弹值具有较高的相关性;新型地区测强曲线与普通地区测强曲线相比,相对误差小,精确度更高。新型超声回弹地区测强曲线为混凝土强度测定提供了一种快速、间接的无损检测方法,使用方便且精度较高。A new ultrasonic rebound strength curve based on the concretion of compression,ultrasonic amplitude, wave velocity and re- bound value is established,by the concrete blocks produced in taian and the experiments of ultrasonic pulse velocity,rebound and com- pression with the NM- 3C type of non- metallic ultrasonic detector and ZC3 -A type hammer.The test results indicate that concrete strength, amplitude ,ultrasonic velocity and rebound value have some relevance; compared with the general strength curve, the relative error of the new ultrasonic rebound strength curve is smaller and the accuracy are better.The new ultrasonic rebound strength curve for concrete strength measurement provides a fast, no damage indirect detection method easily and accurately.

关 键 词：超声回弹综合法 新型测强曲线 混凝土强度 振幅 声速 

分 类 号：TU528.07[建筑科学—建筑技术科学]