Influence of Sulfate Ions on Chloride Attack in Concrete Mortars Containing Silica Fume and Jajrood Trass

被引：5

作者：

Ramezanianpour, Ali Akbar ^{[1
]}

Dehkordi, Erfan Riahi ^{[2
]}

Ramezanianpour, Amir Mohammad ^{[3
]}

机构：

[1] Amirkabir Univ Technol, Concrete Technol & Durabil Res Ctr CTDRc, Dept Civil & Environm Engn, Tehran, Iran

[2] Amirkabir Univ Technol, Dept Civil & Environm Engn, Tehran, Iran

[3] Univ Tehran, Fac Civil Engn, Tehran, Iran

来源：

IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF CIVIL ENGINEERING | 2020年 / 44卷 / 04期

关键词：

Chloride; Sulfate; Combined effect; Concrete durability; Corrosion; Pozzolan; BLENDED CEMENTS; RESISTANCE; PLAIN; EXPANSION;

D O I：

10.1007/s40996-020-00430-9

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effect of sulfate ions on chloride penetration has not been investigated in detail. In this research, standard ordinary portland cement (OPC) mortar and partial cement replacement by silica fume (7.5%) and trass a natural pozzolan (17.5%) were used to investigate the effect of sulfate ions on chloride attack. After 28 days of moist curing, specimens were subjected to chloride-sulfate solutions for 60, 120 and 180 days. According to the results after 208 days, the sulfate intermediate leads to decreased chloride attack in the control and a slight increase in silica fume samples. Regarding the trass sample, an intermediate state occurred. Silica fume reduces chloride penetration significantly. Trass samples generally show better performance than the control in this respect. Rapid chloride migration test (RCMT) was used to determine a method to evaluate the samples behavior in combined chloride-sulfate solutions, quickly. According to the results, RCMT was not an appropriate test to determine chloride penetration in combined chloride-sulfate solutions.

引用

页码：1135 / 1144

页数：10

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