Abstract
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.
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