Uniaxial Compression Performance and Failure Simulation of Concrete with Aggregates Coated by Sludge Gasification Slag
MA Juntao
XUE Jiarong
TAN Yunfei
SONG Zerong
ZHAO Shunbo
Abstract：Coated treatment was conducted on sludge gasification slag using a blended mixture of cement and fly ash,and the treated slag was utilized as coarse aggregate for lightweight aggregate concrete.The influences of coarse aggregate type and volume fraction on the performance of concrete were systematically investigated.A two-dimensional finite element model of concrete was established to simulate the damage distribution and stress-strain curve during concrete failure under uniaxial compressive conditions.The results show that the sludge gasification slag retains its lightweight characteristics after being coated with the cement and fly ash,while its cylinder compressive strength significantly increases from 2.5 MPa to 6.1 MPa.When the volume fraction of coarse aggregate is 40%,the concrete with coated sludge gasification slag aggregate exhibits the smallest damage area and the optimal compressive performance.
Keywords：sludge gasification slag coated aggregateaggregate strengtheninglightweight aggregate concreteuniaxial compressionfailure simulation
Publication Date：2026-01-31
Online Publishing Date：2026-03-17(First online date of this platform, not the publication date of the document)
Pages：10( 77-86 )