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Study on Corrosion Effect of High-Performance Concrete under the Action of Sulfate and Chlorine

International Journal of Modern Physics B(2019)SCI 4区

Jiangsu Univ Sci & Technol

Cited 6|Views14
Abstract
The thickness of corroded concrete layer and the compressive strength of prisms under the action of sulfate and chloride salt were investigated by ultrasonic test and compression test, respectively. The results show that under the single action of sulfate, the strength of concrete experienced two stages: a slow growth stage and a rapid descent stage. Correspondingly, under the combined action of sulfate and chloride, the concrete strength experienced another two stages: a slow growth stage and a slow degradation stage. The existence of chloride inhibited the corrosion damage of concrete in a certain extent. It was found that higher concentration of chlorine salt would lead to a stronger inhibition effect. A good consistency was observed among corrosion layer thickness, compressive strength and X-ray diffraction results. The inhabitation of chloride to the sulfate corrosion of concrete was proved.
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High-performance concrete,compressive strength,corrosion effect
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要点】:研究探讨了硫酸盐和氯盐作用下高性能混凝土的腐蚀效应,揭示了氯盐对硫酸盐腐蚀混凝土的抑制作用。

方法】:通过超声波测试和压缩测试,分别研究了腐蚀层厚度和棱柱体抗压强度。

实验】:在硫酸盐单独作用和硫酸盐与氯盐共同作用下,对混凝土强度变化进行了测试,使用的数据集包括腐蚀层厚度、压缩强度和X射线衍射结果,结果表明氯盐的存在能在一定程度上抑制混凝土的腐蚀损伤,且氯盐浓度越高,抑制作用越强。