Research on the influence of capillary crystalline waterproofing on the mechanical properties and multi-factor coupled durability of concrete
LIU Jianye
KAN Xinghui
CAI Ran
GAN Hehao
LI Yaheng
Abstract：Through multi-scale experimental studies,the influence of cementitious capillary crystalline waterproofing(CCCW)material content on the primary/secondary compressive strength of concrete,the mechanical properties of mortar,and the durability under acid and salt erosion was investigated.The mechanism was characterized using XRD.The results indicate that CCCW signifi-cantly improves the early-age(3 d,7 d)compressive strength of concrete.At a content of CCCW is 0.1％～0.3％,the 3-day compres-sive strength increases by 3.3％～11.9％.The secondary compressive strength recovery rate rise is 0.48 at 28 d curing ages when the content of CCCW is 0.2％,demonstrating excellent self-healing capability for cracks.In corrosive environments,CCCW markedly in-hibits erosion damage to mortar caused by HCl and Na2SO4 solutions.By forming CaMg(CO3)2 crystals that fill pores,it effectively suppresses crack propagation.
Keywords：CCCWsecondary compressive strength recovery ratecorrosion damage inhibitionC-S-H gel
Publication Date：2025-10-25
Online Publishing Date：2025-11-28(First online date of this platform, not the publication date of the document)
Pages：4( 80-83 )