兰州地区普通混凝土无损检测方法适用性研究  

Research on applicability of non-destructive testing method for ordinary concrete in Lanzhou area

作　　者：乔宏霞[1,2] 路承功 朱彬荣[1] 罗小博 

机构地区：[1]兰州理工大学甘肃省土木工程防灾减灾重点实验室,甘肃兰州730050 [2]兰州理工大学西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050

出　　处：《混凝土》2017年第1期120-124,共5页Concrete

基　　金：国家自然科学基金资助项目(51168031;51468039)

摘　　要：以兰州地区泵送C20混凝土试块为研究对象,将实测所得的混凝土抗压强度与回弹法所推定的回弹强度和超声波法所测的超声波波速试验结果,根据最小二乘法原理,通过回归分析,分别建立两者之间的相关关系,并结合国内外研究成果及国家和地区之间的测强曲线进行对比分析研究。结果表明:混凝土超声波检测法是一种更加适合兰州地区无损检测的一种方法,宜优先使用,从而为该地区混凝土工程质量控制、耐久性评估及试验提供理论依据。Pumping C20 concrete block in Lanzhou area as the object of study,according to the principle of least square method to establish separately relationships between concrete actual compressive strength with the rebound method for estimating the rebound strength and actual compressive strength with the experimental results of velocity of ultrasonic sound measured in ultrasonic method by means of the regression analysis.In the meanwhile,combining with the research achievements at home and abroad and the strength-measuring curve of the country and the region to analyse eomparativly.Results show that concrete ultrasonic testing method is a more suitable for nondestructive testing method in Lanzhou area and should be preferred to use.Therefore, it provides theoretical reference for the quality control of concrete engineering, evaluation of durability and experiment in the area.

关 键 词：混凝土 无损检测 抗压强度 回弹强度 超声声速 

分 类 号：TU528.1[建筑科学—建筑技术科学]