Open AccessThis article is
- freely available
Mechanical Properties and Microstructure of Class C Fly Ash-Based Geopolymer Paste and Mortar
School of Civil Engineering, Harbin Institute of Technology, Harbin 150006, China
Department of Civil Engineering, Harbin Institute of Technology at WeiHai, Weihai 264209, China
Heilongjiang Provincial Hydraulic Research Institute, Harbin 150080, China
* Authors to whom correspondence should be addressed.
Received: 21 January 2013; in revised form: 15 March 2013 / Accepted: 1 April 2013 / Published: 9 April 2013
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.
Keywords: geopolymer; class C fly ash; compressive strength; workability; microstructure
Article StatisticsClick here to load and display the download statistics.
Notes: Multiple requests from the same IP address are counted as one view.
Cite This Article
MDPI and ACS Style
Li, X.; Ma, X.; Zhang, S.; Zheng, E. Mechanical Properties and Microstructure of Class C Fly Ash-Based Geopolymer Paste and Mortar. Materials 2013, 6, 1485-1495.
Li X, Ma X, Zhang S, Zheng E. Mechanical Properties and Microstructure of Class C Fly Ash-Based Geopolymer Paste and Mortar. Materials. 2013; 6(4):1485-1495.
Li, Xueying; Ma, Xinwei; Zhang, Shoujie; Zheng, Enzu. 2013. "Mechanical Properties and Microstructure of Class C Fly Ash-Based Geopolymer Paste and Mortar." Materials 6, no. 4: 1485-1495.