Long term durability properties of concrete modified with metakaolin and polymer admixture

被引：54
|
作者：
Al Menhosh, Adel [1 ,3 ]
Wang, Yu [1 ]
Wang, Yan [2 ]
Augusthus-Nelson, Levingshan [1 ]
机构：
[1] Univ Salford, Sch Comp Sci & Engn, Manchester M5 4WT, Lancs, England
[2] Chongqing Jiaotong Univ, Sch Civil Engn, Chongqing 400074, Peoples R China
[3] Univ Basrah, Dept Civil Engn, Basra, Iraq
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 172卷
关键词：
Metakaolin; Polymer; High Performance Concrete; Durability; CHLORIDE PENETRATION DEPTH; STRENGTH; PERMEABILITY; CARBONATION; RESISTANCE; MORTAR; CEMENT; MICROSTRUCTURE; SHRINKAGE; PORTLAND;
D O I：
10.1016/j.conbuildmat.2018.03.215
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Previous studies show that both metakaolin (MK) and polymer can respectively improve certain mechanical and durability properties of concrete. Also, recent studies show that a combination of MK and polymer further enhances the mechanical properties by complement of each other. However, the knowledge of the effect on durability, a critical governing factor of concrete for the applications in extreme environments such as sewage, off-shore and bridge structures, has not been well established yet. This paper reports on a comprehensive study of the effect of metakaolin as a supplementary cementitious material together with polymer as admixture on the durability of concrete at relatively old ages. The results confirm that replacing Portland cement with 15% metakaolin and an additional 5% polymer (by weight) provide the optimum improvement for Portland cement concrete on both mechanical properties and durability. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：41 / 51
页数：11
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