Superabsorbent polymers as internal curing agents in alkali activated slag mortars

被引：85

作者：

Oh, Sungwoo ^{[1
]}

Choi, Young Cheol ^{[2
]}

机构：

[1] Korea Conform Labs, Hightech Construct Mat Ctr, Seoul 08503, South Korea

[2] Gachon Univ, Dept Architectural Engn, 1342 Seongnamdaero, Seongnam Si 13120, Gyeonggi Do, South Korea

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 159卷

关键词：

Alkali activated slag; Autogenous shrinkage; Superabsorbent polymer; Pore structure; Compressive strength; CEMENT-BASED MATERIALS; SUPER ABSORBENT POLYMERS; AUTOGENOUS SHRINKAGE; TRICALCIUM SILICATE; SIZE DISTRIBUTION; CONCRETE; HYDRATION; PERFORMANCE; PASTES; ADMIXTURES;

D O I：

10.1016/j.conbuildmat.2017.10.121

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The aim of this study was to investigate the potential use of superabsorbent polymers (SAPS) as internal curing agents to mitigate the autogenous shrinkage of alkali activated slag (MS) mortar. The autogenous shrinkage, compressive strength, hydration, and microstructural characteristics of AAS mortar with a couple of types of alkali activators with SAPs use were investigated. The test results showed that SAPs played an important role in reducing the shrinkage of AAS mortars, which has been a major limitation in their wider application. Higher reductions in porosity were observed for MS pastes with SAPs compared with those without SAPs. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：1 / 8

页数：8

共 41 条

[1] Influence of mineral additions and different compositional parameters on the shrinkage of structural expanded clay lightweight concrete [J].

Alexandre Bogas, J. ;

Nogueira, Rita ;

Almeida, Nuno G. .

MATERIALS & DESIGN, 2014, 56 :1039-1048

[2]

[Anonymous], 2014, CEMENT CONCRETE RES, V59, P155

[3]

[Anonymous], 2002, 679 ISO

[4]

[Anonymous], 2008, THESIS

[5]

ASTM, 2008, ASTM C191-08

[6] Alkali activation of Australian slag cements [J].

Bakharev, T ;

Sanjayan, JG ;

Cheng, YB .

CEMENT AND CONCRETE RESEARCH, 1999, 29 (01) :113-120

[7] Effect of admixtures on properties of alkali-activated slag concrete [J].

Bakharev, T ;

Sanjayan, JG ;

Cheng, YB .

CEMENT AND CONCRETE RESEARCH, 2000, 30 (09) :1367-1374

[8] Resistance of alkali-activated slag concrete to acid attack [J].

Bakharev, T ;

Sanjayan, JG ;

Cheng, YB .

CEMENT AND CONCRETE RESEARCH, 2003, 33 (10) :1607-1611

[9]

Bensted J., 1980, 7TH INT C CHEM CEM, V2, P1

[10]

Bentz D., 2015, Influence of internal curing on properties and performance of cement-based repair materials

← 1 2 3 4 5 →