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Influence of FeCl 3 ⋅6H 2 O on the Hydration Hardening and Water Resistance of Magnesium Potassium Phosphate Cement
Author(s) -
Zhu Yanjiao,
Wang Zhen,
Li Zhifeng,
Yu Haibin
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202000306
Subject(s) - potassium phosphate , materials science , cement , magnesium , curing (chemistry) , microstructure , potassium , phosphate , water resistance , hydration reaction , compressive strength , chemical engineering , hardening (computing) , metallurgy , composite material , chemistry , organic chemistry , engineering , layer (electronics)
Magnesium potassium phosphate cement (MKPC) is an ideal repair material due to its rapid curing advantages, but the setting time is too short to be applied in practical applications. In this work, FeCl 3 ⋅6H 2 O was incorporated to MKPC to reduce the hydration temperature and prolong the setting time. Comprehensive investigation was performed on the influence of FeCl 3 ⋅6H 2 O on the hydration temperature, setting time, mechanical properties, water resistance and microstructure of MKPC. The results showed that during the hydration process, FeCl 3 ⋅6H 2 O underwent a phase transition and absorbed part of the hydration heat, which delayed the hydration heat release rate and effectively extended the setting time. In addition, the incorporation of FeCl 3 ⋅6H 2 O with suitable contents had a positive impact on the compressive strength and water resistance. Finally, the optimal content of FeCl 3 ⋅6H 2 O was determined to be 1.0%.