Mechanical Properties and Microstructure of Class C Fly Ash-Based Geopolymer Paste and Mortar

被引：93

作者：

Li, Xueying ^{[1
]}

Ma, Xinwei ^{[2
]}

Zhang, Shoujie ^{[3
]}

Zheng, Enzu ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Civil Engn, Harbin 150006, Peoples R China

[2] Harbin Inst Technol WeiHai, Dept Civil Engn, Weihai 264209, Peoples R China

[3] Heilongjiang Prov Hydraul Res Inst, Harbin 150080, Peoples R China

来源：

MATERIALS | 2013年 / 6卷 / 04期

关键词：

geopolymer; class C fly ash; compressive strength; workability; microstructure; ALKALI-ACTIVATED SLAG; ELEVATED-TEMPERATURES; CEMENT; TECHNOLOGY; METAKAOLIN; CONCRETE; STRENGTH; BEHAVIOR;

D O I：

10.3390/ma6041485

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper presents workability, compressive strength and microstructure for geopolymer pastes and mortars made of class C fly ash at mass ratios of water-to-fly ash from 0.30 to 0.35. Fluidity was in the range of 145-173 mm for pastes and 131-136 mm for mortars. The highest strengths of paste and mortar were 58 MPa and 85 MPa when they were cured at 70 degrees C for 24 h. In XRD patterns, unreacted quartz and some reacted product were observed. SEM examination indicated that reacted product has formed and covered the unreacted particles in the paste and mortar that were consistent with their high strength.

引用

页码：1485 / 1495

页数：11

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