Application of ultrasonic wave technology to evaluate the corrosion depth of concrete in acid rain environment
Deterioration of concrete exposed to acid rain environment will take a significant effect on the load carrying capacity and durability of the concrete structures. To evaluate the corrosion depth of concrete in acid rain environment, an experimental study was performed with ultrasonic wave technology in the laboratory. In the experiment, sulfate and nitric acid solutions are mixed to simulate the 3 pH levels (pH 3.5, pH 2.5 and pH 1.5) acid rain environments respectively. After being exposed to the simulated acid rain solutions for certain periods, a series of tests (including ultrasonic nondestructive test, Computerized Tomography (CT) test, compressive tests, etc.) were conducted. Damage depth, mass loss, axial compressive strength, and meso-structure of the concrete specimen under different corrosion state were achieved. It was shown that ultrasonic testing is a reliable nondestructive method to measure the damage depth of concrete. A bilinear regression model is proposed to predict the damage depth of concrete, which is in good correlation with testing results from both ultrasonic testing and CT test.
concrete simulated acid rain environment corrosion depth ultrasonic wave technology CT
Fan Yingfang Hu Zhiqiang Liu Jianglin
Institute of Road and Bridge Engineering,Dalian Maritime University,China Institute of Civil and Hydraulic Engineering,Dalian University of Technology,China
国际会议
2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)
重庆
英文
128-133
2010-09-17（万方平台首次上网日期，不代表论文的发表时间）