河北大学学报(自然科学版) ›› 2018, Vol. 38 ›› Issue (4): 356-361.DOI: 10.3969/j.issn.1000-1565.2018.04.003

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基于超声波测试的混凝土应力与波速关系

杜二霞1,2,张君鸿1,阎宇杰1,2   

  • 收稿日期:2017-12-04 出版日期:2018-07-25 发布日期:2018-07-25
  • 作者简介:杜二霞(1976—),女,河北平山人,河北大学讲师,河北农业大学在读博士研究生,主要从事土木工程材料与结构方向研究. E-mail:18903120876@126.com
  • 基金资助:
    河北省高等学校科学技术研究项目(QN2017308);河北省自然科学基金资助项目(E2018201106);河北大学大学生创新训练计划项目(201514)

Experimental study on the relationship between concrete stress and ultrasonic velocity

DU Erxia1,2, ZHANG Junhong1,YAN Yujie1,2   

  1. 1.College of Civil Engineering and Architecture, Hebei University, Baoding 071002, China; 2.Hebei Experimental Teaching Demonstration Center of Construction Engineering, Hebei University, Baoding 071002, China
  • Received:2017-12-04 Online:2018-07-25 Published:2018-07-25

摘要: 基于超声波无损检测原理,对自然养护的C20和C30 2个强度等级的泵送混凝土立方体试块进行超声波测试.通过测试不同龄期、不同点位混凝土试块的超声波波速和工作应力,借助Origin数据处理软件对超声波波速和工作应力之间的关系进行回归分析,得出超声波波速与点位工作应力的关系曲线方程.研究结果表明:采用线性函数描述超声波波速与应力之间的关系相关度高,准确性好,可以为在役混凝土工作应力超声波检测提供参考.

关键词: 混凝土, 超声波速, 工作应力, 无损检测

Abstract: Based on the ultrasonic nondestructive testing method,the natural maintained pumping concrete blocks of C20 and C30 is tested.Through the test of different ages and different points, the ultrasonic velocity and working stress are obtained. Then the Origin software is used to analyze the relationship between ultrasonic velocity and the concrete working stress.The result shows that linear function is reasonable in describing the relationship of ultrasonic velocity and working stress of concrete. Then a reference can be provided in testing the working stress of in-service concrete by nondestructive testing technology.

Key words: concrete, ultrasonic velocity, working stress, nondestructive testing

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