期刊
CEMENT & CONCRETE COMPOSITES
卷 34, 期 5, 页码 700-708出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2012.01.010
关键词
Compressive strength; Durability; Bottom ash; Geopolymer; Mortar
资金
- Electricity Generating Authority of Thailand (EGAT)
- Higher Education Research Promotion and National Research University Project of Thailand
- Office of the Higher Education Commission, through the Advanced Functional Materials Cluster of Khon Kaen University
- Thailand Research Fund (TRF) [RTA5480004]
This paper presents an investigation of the compressive strength and the durability of lignite bottom ash geopolymer mortars in 3% sulfuric acid and 5% sodium sulfate solutions. Three finenesses of ground bottom ash viz., fine, medium and coarse bottom ash were used to make geopolymer mortars. Sodium silicate, sodium hydroxide and curing temperature of 75 degrees C for 48 h were used to activate the geopolymerization. The results were compared to those of Portland cement and high volume fly ash mortars. It was found that the fine bottom ash was more reactive and gave geopolymer mortars with higher compressive strengths than those of the coarser fly ashes. All bottom ash geopolymer mortars were less susceptible to the attack by sodium sulfate and sulfuric acid solutions than the traditional Portland cement mortars. (C) 2012 Elsevier Ltd. All rights reserved.
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