Study on Water Resistance of Composite Gypsum Based Cementitious Materials under Dry Wet Cycle Conditions
This paper investigates the water resistance of the composite cementitious material of anhydrite and phosphogypsum under dry wet cycle conditions,and analyzes the change mechanism of its water resistance performance.Results has shown that composite gypsum based cementitious materials are more prone to dissolution and have a higher water absorption rate compared to phosphorus building gypsum.The hydration cycle of composite gypsum based cementitious materials is relatively longer.The hydration process of anhydrite greatly affects the hydration process of the composite cementing system.
phosphorus building gypsumanhydritedry wet cyclewater resistance performancemechanism analysis