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


ABSTRACT: 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 °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.

SUBMITTER: Li X 

PROVIDER: S-EPMC5452326 | biostudies-other | 2013 Apr

REPOSITORIES: biostudies-other

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