Preparation and performance of phosphogypsum-based polymer foam lightweight soil
YANG Fan
LIU Yamei
CHEN Shengying
JIANG Wei
ZHANG Zhe
XU Fang
Abstract：In this paper,phosphogypsum-based polymer foam lightweight soil was prepared by taking phosphogypsum as fine aggregate and adding coagulant and prefabricated foam.The changes in the properties of the material were studied deeply in terms of flow rate,setting time,mechanical properties,water absorption and softening coefficient,combined with XRD and SEM for micro-scopic testing.The results show that mortar test blocks with excellent performance can be prepared under the conditions of sand-to-ash ratio 0.6,water-to-material ratio 0.5 and quicklime 4％.The initial and final setting times are 210 and 260 minutes,the compressive strength of the specimen can reach 2.8 MPa after 3 days,and 11.9 MPa after 28 days.Foam lightweight soil with dif-ferent wet density can be prepared by adjusting the amount of prefabricated foam,providing a new way for phosphogypsum resource application.
Keywords：phosphogypsumgeopolymersfoam lightweight soilacceleratorperformance
Publication Date：2023-11-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 80-85 )