Effect of Temperature and Soft Water Environment on Aluminate Cement Based Materials
ZHANG Yu
ZUO Xiaobao
LIU Jinghan
Abstract：The mechanical property changes of aluminate cement(CAC)based materials in soft water environments and the mechanisms influenced by temperature were studied.Compressive strength of CAC mortar was monitored,the phase composition and microstructure of the paste specimens were analyzed by X-ray diffractometer,thermogravimetry analysis,ethylene diamine tetraacetic acid(EDTA)titration and scanning electronic microscope.The results show that the composition of CAC hydration products do not change significantly in 20℃soft water environment,and the formation of a large number of amorphous phase gibbsite in the paste ensures the stability of the long-term performance of the material.In the 60℃environment,an increase in temperature triggers phase transitions,and the presence of soft water further enhances this effect.Under the combined influence of temperature and soft water,the transformation of the crystal products and dissolution of some phases lead to disruption of the CAC paste microstructure and pore creation,resulting in degraded material properties.
Keywords：aluminate cementproduct phase transitionhigh temperaturesoft water environmentmicrostructure
Publication Date：2025-06-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 491-498 )