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Advances in Materials Science and Engineering
Volume 2017 (2017), Article ID 2437270, 12 pages
https://doi.org/10.1155/2017/2437270
Research Article

Experimental Investigation and Quantitative Calculation of the Degree of Hydration and Products in Fly Ash-Cement Mixtures

1State Key Laboratory of Geomechanics & Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China
2Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, Xuzhou 221116, China
3Jiangsu Key Laboratory for Construction Materials, Southeast University, Nanjing 211189, China

Correspondence should be addressed to Zhiyong Liu; moc.361@8270gnoyihzuil

Received 10 July 2016; Revised 7 October 2016; Accepted 30 November 2016; Published 9 January 2017

Academic Editor: Jun Liu

Copyright © 2017 Zhiyong Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

To explore the hydration process of fly ash-cement blended mixtures, the degrees of the fly ash and cement reactions as well as the content of nonevaporated water were determined at various water to binder ratios, curing ages, and fly ash incorporation amounts. An equation describing the relationship between the degree of hydration and the effective water to binder ratio was established based on the experimental results. In addition, a simplified scheme describing a model of the degree of reaction in fly ash-cement mixtures is proposed. Finally, using reaction stoichiometry, quantitative equations for the hydration products of fly ash-cement blended pastes are proposed by considering the hydration reactions of fly ash and cement as well as their interactions. The predicted results of the enhanced degree of cement hydration, content of calcium hydroxide (CH), and porosity are consistent with the experimental data.