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首页> 美国卫生研究院文献>Materials >Effect of Curing Condition on Resistance to Chloride Ingress in Concrete Using Ground Granulated Blast Furnace Slag
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Effect of Curing Condition on Resistance to Chloride Ingress in Concrete Using Ground Granulated Blast Furnace Slag

机译：养护条件对粒状高炉矿渣混凝土抗氯化物侵入性能的影响

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摘要

Changes in the salt attack resistance of concrete using ground granulated blast furnace slag (GGBFS) were examined based on different curing conditions. These conditions were divided into air and underwater curing. Three concrete mixes with GGBFS replacement ratios of 0% (control group), 30% and 60% were fabricated. Then, evaluation of concrete compressive strength, evaluation of chloride ion diffusion coefficient and electrochemical impedance spectroscopy (EIS) were performed. As the GGBFS replacement ratio increased, the concrete compressive strength of the air cured specimens decreased compared to the underwater cured specimens. With respect to the chloride ion diffusion coefficient measurements, the coefficient decreased as the GGBFS replacement ratio increased. However, the diffusion coefficient of the air cured specimen relative to the underwater cured ones increased up to two times. The EIS results showed that as the GGBFS replacement ratio increased, |Z| increased in every frequency range. However, the |Z| of the air cured specimen was lower than the underwater cured one. This showed the same tendency as the evaluation results of the chloride ion diffusion coefficient.
机译：根据不同的养护条件，检查了使用磨碎的高炉矿渣（GGBFS）的混凝土耐盐侵蚀性的变化。这些条件分为空气固化和水下固化。制备了三种混凝土混合物，GGBFS替代率为0％（对照组），30％和60％。然后，进行混凝土抗压强度的评估，氯离子扩散系数的评估和电化学阻抗谱（EIS）。随着GGBFS置换率的增加，与水下固化试样相比，空气固化试样的混凝土抗压强度降低。关于氯离子扩散系数的测量，该系数随着GGBFS置换率的增加而降低。但是，空气固化样品相对于水下固化样品的扩散系数增加了两倍。 EIS结果表明，随着GGBFS替换率的增加，| Z |在每个频率范围内都增加了。但是，| Z |空气固化的样品中的一半低于水下固化的样品。这显示出与氯离子扩散系数的评价结果​​相同的趋势。

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