Abstract
The purpose of this study is to examine the surfactant effect on the degradation of the concrete. In the experiment, the effect by surfactant and repeated-load were examined.Surfactants used by the experiment are the 5types such as windshield washer fluid used for the automobile and household detergent. First, the concrete test-piece was put in the surfactant aqueous solution, and the visual observation was carried out. As the result, analysis and mass decrease rate were obtained on the material that deposited in the concrete test-piece surface. And, the repeated-loadwas carried out using the test-piece that changed the condition of the concrete bridge beam floor system management, and the effect of the concrete on the degradation was examined.
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