Simulation and Analysis of Early-Age Damage Evolution Process of Concrete Based on 3D Random Aggregates
ZHAO Weiping
CHEN Jialong
LING Binjian
BAI Jiaqi
YANG Wanyi
Abstract：To investigate the mechanical properties and damage evolution process of early-age concrete under axial compression loading,axial compression tests were conducted on cylindrical concrete specimens with ages of 1,3,5,7,14,28 days.Additionally,a mesoscale finite element model based on three-dimensional random polyhedral aggregates and zero-thickness cohesive elements was generated in Abaqus software using Python programming.The results show that the compressive stiffness,compressive strength,and peak strain of concrete all increase with the extension of age.The established model can accurately predict the axial compression performance of early-age concrete.Based on the above results,the damage state,crack distribution,and force transfer mechanism of early-age concrete during axial compression failure are further analyzed.It further reveals the mechanism to the influence of age.
Keywords：early-age concreteaxial compression performancenumerical simulationcohesive zone modelrandom aggregate
Publication Date：2025-12-30
Online Publishing Date：2026-01-08(First online date of this platform, not the publication date of the document)
Pages：9( 1207-1215 )