Study on the effect of penetrating crystalline materials on the self-healing properties of concrete
CAI Ran
LIU Lixian
JIANG Yiming
LI Yaheng
Abstract：To investigate the effect of penetrating crystalline materials on the self-healing properties of concrete,this paper test-ed the primary compressive strength,secondary compressive strength and strength recovery rate of concrete under different curing hu-midity and age,and SEM analysis were also carried out on the concrete.The results show that the permeable crystalline materials can significantly improve the secondary compressive strength of concrete under standard curing conditions,especially the best effect when the dosage is 0.2％.However,under soaking curing conditions,the enhancement effect is not significant,but long-term observation still helps to improve the self-healing ability of concrete.SEM analysis results show that the material hydration generates a large number of fine flocculent particles,and the content of magnesium and silica elements increased,the main generator of CaMg(CO3)2.Although the material on the early strength of the concrete to improve the effect of the material is significant,it may also lead to the effect of the repair not be able to quickly make up the gap in strength improvement,so in some cases the recovery rate was lower than that of the unadded specimens.Overall,permeable crystalline materials had a positive impact on the performance of the concrete,particularly in terms of improving early strength and promoting self-healing.
Keywords：permeable crystalline materialsprimary compressive strengthsecondary compressive strengthstrength recovery rate
Publication Date：2025-01-24
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)