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采用等效结构参数的混凝土试块弹性模量监测

DOI: 10.11830/ISSN.1000-5013.2015.01.0074, PP. 74-79

Keywords: 压电阻抗,压电陶瓷,弹性模量,等效结构参数,曲线拟合

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Abstract:

基于压电阻抗技术,对混凝土试块弹性模量在固化过程中的发展进行监测实验研究.用阻抗分析仪测得粘贴在不同配合比的混凝土试块的压电陶瓷片在不同龄期下的电导纳信号,对28d龄期内不同配合比的混凝土试块进行弹性模量测试.采用共振频率和等效结构参数来评价混凝土固化过程中的变化.通过回归分析建立等效结构参数与混凝土试块弹性模量之间的关系,监测混凝土弹性模量发展.结果表明:压电阻抗技术可用来监测混凝土弹性模量在固化过程中的变化.

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