华侨大学学报（自然科学版）Issue(1)：74-79,6.DOI:10.11830/ISSN.1000-5013.2015.01.0074
采用等效结构参数的混凝土试块弹性模量监测
Monitoring for Elastic Modulus of Concrete Based on Equivalent Structural Parameters
摘要
Abstract
An experimental study to monitoring elastic modulus of concrete during curing process was presented based on piezoelectric impedance method.The piezoceramic (PZT)patch was attached on the concrete specimen to collect the mo-nitoring signal.The electro-mechanical admittance spectra of surface bonded PZT patch were collected using an impedance analyzer by sweeping the frequency.Meanwhile,the elastic modulus of concrete was tested during curing process.The resonant frequency and equivalent structural parameters were conducted for evaluating the change of elastic modulus in concrete during curing process.A regression analysis was conducted to establish the empirical relationship between the relative elastic modulus gain of concrete and equivalent structural parameters.The established empirical formula is used for concrete elastic modulus monitoring via EMI spectra.The results tell that the piezoelectric impedance technique is a practical and reliable nondestructive test method for concrete elastic modulus gain monitoring.关键词
压电阻抗/压电陶瓷/弹性模量/等效结构参数/曲线拟合Key words
piezoelectric impedance/piezoceramic/elastic modulus/equivalent structural parameters/curve fit分类
建筑与水利引用本文复制引用
郭智刚,孙智..采用等效结构参数的混凝土试块弹性模量监测[J].华侨大学学报（自然科学版）,2015,(1):74-79,6.基金项目
铁道部科技研究开发计划项目（2012G003-E）；上海市科技启明星跟踪项目（09QH1402300）；同济大学土木工程防灾国家重点实验室自主研究课题资助项目 （）
