Journal Published Online: 14 June 2019
Volume 8, Issue 1

Improvement and Reaction Mechanisms of Hydrolytic Resistance of Magnesium Phosphate Cement Mixed with Glacial Acetic Acid

CODEN: ACEMF9

Abstract

The aim of this quantitative study was to investigate the influence of different concentrations of glacial acetic acid on the setting time and hydrolytic resistance properties of magnesium phosphate cement (MPC). Sufficient addition of glacial acetic acid can prolong the setting time of an MPC paste. In our experiment, it was observed that the setting time increased and then decreased with increasing acid addition. Meanwhile, it was observed that the addition of acid could lead to improved hydrolytic resistance and that the critical time of water entry was approximately 7 days for standard curing. The improved hydrolytic resistance might be attributed to the chemical reaction between glacial acetic acid and phosphate inside the MPC, optimization of the pore structure of the MPC, and a reduction in the concentration of soluble phosphate.

Author Information

Jun, Li
School of Civil Engineering and Architecture, Kaifeng University, Henan Kaifeng, China State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, China
Yongsheng, Ji
State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, China
Pages: 10
Price: $25.00
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Stock #: ACEM20180144
ISSN: 2379-1357
DOI: 10.1520/ACEM20180144