【摘 要】
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In the cold snowy region of China, buildings usually expose to the marine environment and deicing salt.It is observed that the harmful environment accelerates the corrosion of steel structure and resu
【机 构】
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School of Civil Engineering&Architecture, Xiamen University of Technology, Xiamen 361024, China
【出 处】
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The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
In the cold snowy region of China, buildings usually expose to the marine environment and deicing salt.It is observed that the harmful environment accelerates the corrosion of steel structure and result in the concrete deterioration, especially under freezing-thawing conditions.Polypropylene fiber(PPF), was used to reduce the cracks of concrete, and it also can improve the durability properties of concrete under an environmental condition of freezing and thawing, with the existence of de-icing salt.A total of four groups of specimens were prepared, by varying the amounts of PPF.In order to observe the effects and roles of PPF on the durability performance of concrete, freezing and thawing test, surface scaling, microscopic observation and chloride concentration were carried out.Test results showed that the incorporation of PPF improved the resistance of freezing and thawing with de-icing salt, the chloride penetration and the resistance of surface scaling of concrete compared to the control volume containing 0.1% PPF.
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