Research progress on shotcrete durability
WANG Yaolong
LI Wei
FAN Shengtong
DENG Lei
YUE Bin
HAN Xuan
MA Xinxin
Abstract：Shotcrete is a key material in tunnel and underground engineering,and its durability directly impacts structural safety and service life.This paper reviews the factors that influence shotcrete durability and its degradation mechanisms,including the major deterioration processes of leakage,freeze-thaw cycles,sulphate attack,carbonation acid corrosion and chloride ion penetration.Leakage leads to the dissolution of hydration products;freeze-thaw cycles induce the propagation of microcracks;sulfate attack generates ex-pansive products;And carbonation reduces the pH value while accelerating steel corrosion.By analyzing existing test data and model,this study proposes improving durability through optimizing cementitious materials,controlling the water-to-binder ratio,enhancing ag-gregate gradation and refining construction techniques.
Keywords：shotcretedurabilityleakagefreeze-thawsulfate attackcarbonic acid corrosion
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：6( 59-63,74 )