耐久性
碳化作用
粉煤灰
水合硅酸钙
材料科学
硅酸盐水泥
抗压强度
水泥
复合材料
腐蚀
体积热力学
扫描电子显微镜
磁导率
冶金
化学
膜
量子力学
生物化学
物理
作者
Manish Kumar,Anand Kumar Sinha,Jitu Kujur
标识
DOI:10.1002/suco.202000020
摘要
Abstract This article presents the experimental results on accelerated carbonation‐induced corrosion and related durability properties such as AC impendence, half‐cell potential, water permeability, and volume of permeable voids test of concrete made with high‐volume Class F fly ash (FA). Concrete specimens were prepared by substituting ordinary portland cement with FA at varying replacement levels (0–70%). High‐volume FA concrete shows the continuous gain in the compressive strength and ultrasonic pulse velocity over a period of 365 days. The durability properties of concrete made with FA up to 50% shows the significant improvement. The scanning electron microscopy photomicrographs also support the findings and shows that the replacement of cement with FA densifies the concrete matrix due to the formation of more calcium silicate hydrate gels.
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