Early cracking test and simulation analysis of fiber mesh cloth cement mortar
XIAO Dingkan
ZHANG Jun
ZHANG Chen
ZHOU Yong
XU Wei
WU Juan
Abstract：The mortar layer formed on the surface of airport cement concrete pavements is susceptible to cracking and peeling,which generates significant dust and debris,thereby affecting the normal operation of the runway.ANSYS software was employed to simulate and analyze the effects of various factors such as the type,size,and embedding depth of fiber mesh,as well as the diameter and layout density of constraint reinforcement on the early crack resistance performance of the mortar layer.The results indicate that fiber mesh can effectively reduce cracks in the cement mortar layer but has limited influence on overall cracking damage.Different types of fiber mesh exhibit similar effects on crack inhibition.Smaller mesh sizes tend to induce more pronounced micro-cracking within the mortar.However,these micro-cracks are constrained by the fiber mesh structure and thus remain localized,contributing to the suppression of macro-crack initiation and propagation.Greater embedding depth of the fiber mesh increases surface shrinkage stress,making the central cross-shaped cracks more likely to expand.A smaller diameter of constraint reinforcement leads to reduced surface cracking and fewer central cracks.The greater the density of constraint reinforcements,the stronger the restraining effect on mortar shrinkage,but the greater the overall damage caused by microcracks.
Keywords：airport pavementearly crack resistancesurface strengtheningfiber mesh clothsimulation analysis
Publication Date：2025-08-25
Online Publishing Date：2025-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 64-69 )