Effects of metakaolin on properties of high performance mortar

被引：7

作者：

Jiang, Guang ^{[1
]}

Rong, Zhidan ^{[1
]}

Sun, Wei ^{[1
]}

机构：

[1] Jiangsu Key Laboratory of Construction Materials, Southeast University, Nanjing

来源：

Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2015年 / 45卷 / 01期

关键词：

Chloride ion penetrability; Mechanical properties; Metakaolin; Pozzolanic reactivity;

D O I：

10.3969/j.issn.1001-0505.2015.01.022

中图分类号：

学科分类号：

摘要：

The pozzolanic reactivity of metakaolin and the effects of different metakaolin contents on fluidity, flexural strength, compressive strength and chloride ion penetrability of high performance mortar are studied. The experimental results show that the pozzolanic reactivity of metakaolin is higher than that of silica fume. The irregular morphology of metakaolin decreases the fluidity of fresh mortars. The flexural strength of the mortars decreases due to the addition of metakaolin, and at the curing age of 90 d the flexural strength of the mortars with the metakaolin content of 10% is higher than those with the metakaolin contents of 6% and 14%. In addition, the compressive strength of the mortars with the metakaolin content of 10% is the highest, which reaches 96.3 MPa when the curing age is 90 d. The chloride ion penetrabilities of the mortars with the metakaolin contents of 0%, 6%, 10% and 14% are low when the curing age is 56 d, and the total charges are 165, 221, 191, 158 C, respectively. ©, 2015, Southeast University. All right reserved.

引用

页码：121 / 125

页数：4

共 11 条

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