| Literature DB >> 19201089 |
J Temuujin1, A van Riessen, R Williams.
Abstract
The influence of calcium compounds (CaO and Ca(OH)(2)) on the mechanical properties of fly ash based geopolymers has been studied. Calcium compounds were substituted in fly ash at 1, 2 and 3 wt%, respectively. Curing of the geopolymers was performed at ambient temperature (20 degrees C) and 70 degrees C. Addition of calcium compounds as a fly ash substitute improved mechanical properties for the ambient temperature cured samples while decreasing properties for the 70 degrees C cured samples. Seven days compressive strength of the ambient temperature cured samples increased from 11.8 (2.9) to 22.8 (3.8)MPa and 29.2 (1.1)MPa for 3% CaO and 3% Ca(OH)(2) additions, respectively.Entities:
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Year: 2009 PMID： 19201089 DOI： 10.1016/j.jhazmat.2008.12.121
Source DB: PubMed Journal: J Hazard Mater ISSN： 0304-3894 Impact factor: 10.588