Preparation and performance study of phosphogypsum modified asphalt self-adhesive waterproofing membrane
XU Yanting
LYU Xicheng
YANG Xin
HUO Jichuan
WANG Ling
Abstract：XRD,XRF,SEM and TG-DSC were used to comprehensively test and characterize phosphogypsum.The self-adhesive modified asphalt waterproofing membrane was prepared using phosphogypsum,and the effect of phosphogypsum content on the perfor-mance of the waterproofing membrane was studied.The results show that the waterproofing membrane prepared by phosphogypsum has higher heat resistance and reduces the low-temperature performance to a certain extent.There is a significant strong correlation be-tween the content of phosphogypsum(semi-aqueous and anhydrous)and the elongation at break,peel strength and viscosity of the self-adhesive waterproofing membrane,especially when the content of phosphogypsum is 50％,the comprehensive performance of the waterproofing membrane reaches the optimum.In particular,the self-adhesive waterproofing membrane prepared by anhydrous phosph-ogypsum shows better performance in terms of high and low temperature performance,elongation at break,peel strength and stickiness.
Keywords：80#matrix asphaltphosphogypsumself-adhesive waterproofing membraneheat resistance
Publication Date：2025-04-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 74-77,133 )