Factors affecting the compressive strength of class C fly ash geopolymer

被引:2
作者
Li, XueYing [1 ]
Zheng, EnZu [1 ]
Ma, ChunLong [1 ]
机构
[1] Harbin Inst Technol, Sch Civil Engn, Harbin 150006, Peoples R China
来源
ARCHITECTURE AND BUILDING MATERIALS, PTS 1 AND 2 | 2011年 / 99-100卷
关键词
Geopolymer; Class C fly ash; Compressive strength;
D O I
10.4028/www.scientific.net/AMM.99-100.960
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The compressive strength of geopolymer prepared from a class C fly ash (CFA) at different curing conditions and mass ratio of water to fly ash were investigated. The geopolymer was activated with a mixed solution of sodium hydroxide (NaOH) and sodium silicate. The results revealed that the obtained compressive strength was in the range of 11.7 similar to 61.9MPa and the compressive strength decreased with the increment of the mass ratio of water to CFA (W/F). The geopolymer samples with the highest strength were obtained when W/F was 0.30 with proper delay time id before being demoulded and then followed by curing at 60 degrees C for 24h. For geopolymer with lower W/F (0.30), its optimum curing temperature was better not higher than 60C, however, for the higher W/F, the curing temperature was suit to more than 70 degrees C.
引用
收藏
页码:960 / 964
页数:5
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