Effect of polyethylene glycol addition on metakaolin-based geopolymer

被引：19
作者：
Mikhailova, Olesia [1 ]
Rovnanik, Pavel [1 ]
机构：
[1] Brno Univ Technol, Fac Civil Engn, Veveri 331-95, Brno, Czech Republic
来源：
ECOLOGY AND NEW BUILDING MATERIALS AND PRODUCTS 2016 | 2016年 / 151卷
关键词：
Metakaolin; geopolymer; polyethylene glycol; mechanical properties; microstructure; HYBRID; MICROSTRUCTURE;
D O I：
10.1016/j.proeng.2016.07.379
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Polyethylene glycol is a non-toxic water soluble polymer often used in many industrial applications. The aim of this paper is to study the effect of polyethylene glycol with relative molecular weight ranging between 400-20000 on the properties of geopolymer mortars composed of metakaolin and sodium silicate. Polyethylene glycol was added in the amount of 0.5 to 10% by mass of metakaolin. After 28 days of curing at ambient conditions, different tests were carried out: physico-chemical (density, porosity), mechanical (flexural and compressive strength) and structural (SEM). The results showed that a maximum compressive strength of 23.9 MPa and a maximum flexural strength of 2.9 MPa were achieved by adding 10% PEG 400. (C) 2016 The Authors. Published by Elsevier Ltd.
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收藏
页码：222 / 228
页数：7
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