硅酸盐通报2025，Vol.44Issue(9)：3147-3155,9.DOI:10.16552/j.cnki.issn1001-1625.2025.0057
环境温度对磷酸镁水泥水化温升的影响
Effect of Ambient Temperature on Hydration Temperature Rise of Magnesium Phosphate Cement
摘要
Abstract
Ambient temperature is one of the important factors affecting the construction and application of magnesium phosphate cement(MPC).In this paper,the hydration temperature rise characteristics,compressive strength,hydration product composition,and pore changes of magnesium ammonium phosphate cement(MAPC)and magnesium potassium phosphate cement(MKPC)were systematically analyzed at different ambient temperatures.The results show that the increase in ambient temperature caused an increase in the hydration temperature peak of MAPC and MKPC.With the increase of the ambient temperature,the hydration temperature peak of MAPC appears earlier.In contrast the hydration temperature peak of MKPC first shifts forward and then backward in timing,with relatively lower peak values.As the hydration temperature peak increases,the compressive strength of MAPC and MKPC both show the same trend of first increasing and then decreasing,but there are significant differences in the hydration products and pore changes.MAPC produces different hydration products at different hydration temperature peaks.When the hydration temperature peak is below 70.0 ℃,the main product is MgNH4PO4·6H2O,and its production increases with the increase of hydration temperature peak.When the hydration temperature peak is above 70.0 ℃,a poorly adhesive hydration product MgNH4PO4·H2O is generated,which causes an increase in harmful pores.The hydration products of MKPC are all MgKPO4·6H2O,and the generated amount increases with the increase of the hydration temperature peak.However,at high hydration temperature peaks(above 60.0 ℃),rapid water evaporation causes an increase in the proportion of harmful pores.关键词
磷酸镁水泥/磷酸铵镁水泥/磷酸钾镁水泥/环境温度/水化温度/水化产物/抗压强度Key words
magnesium phosphate cement/magnesium ammonium phosphate cement/magnesium potassium phosphate cement/environmental temperature/hydration temperature/hydration product/compressive strength分类
建筑与水利引用本文复制引用
蒋昊洋,胡志德,赵思勰,张寒松,许春霞..环境温度对磷酸镁水泥水化温升的影响[J].硅酸盐通报,2025,44(9):3147-3155,9.基金项目
重庆市自然科学基金面上项目(cstc2021jcyj-msxmX0725) （cstc2021jcyj-msxmX0725）
