Alkali-Activated Phosphorous Slag Performance under Different Curing Conditions: Compressive Strength, Hydration Products, and Microstructure
Publication: Journal of Materials in Civil Engineering
Volume 30, Issue 1
Abstract
In this paper, the impact of curing parameters such as precuring time, curing time, and temperature on compressive strength of mortar with phosphorous-slag cement activated with two different compound activators including and , as well as the microstructure morphology of the hardened mortars, are studied. Furthermore, variance analysis is used to evaluate the effectiveness of each curing parameter. The results show that application of such a combined low-temperature and high-temperature curing regime can effectively improve the quality of the transition zone (porosity and bonding of the cement matrix to aggregate), in addition to the development of more polymeric structures (silicates of -structures) in hydration products. These improvements together result in a threefold increase in the compressive strength compared with environmental curing conditions.
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Published In
Journal of Materials in Civil Engineering
Volume 30 • Issue 1 • January 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Feb 11, 2017
Accepted: Jun 8, 2017
Published online: Oct 25, 2017
Published in print: Jan 1, 2018
Discussion open until: Mar 25, 2018
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