Key technologies and applications for crack control in three-graded moderate heat cement concrete
CAO Zhonglu
LI Yuelian
YU Yang
WANG Yujiang
WANG Yang
Abstract：This study proposes a synergistic crack control technology using moderate heat cement,three-graded concrete,and an-ti-cracking agent.By comparing the hydration heat characteristics of moderate heat cement and ordinary cement,and adding 6%to 10%anti-cracking agent,the mechanical properties,deformation characteristics,and adiabatic temperature rise of concrete were system-atically tested.The results show that the synergistic effect of the three significantly reduces the rate of hydration heat release.With 10%anti-cracking agent addition,the hydration heat release rate of the cement paste decreased by approximately 33.3%,and the adi-abatic temperature rise of concrete decreased by about 2.3℃.Additionally,the autogenous volume deformation of concrete shifted to expansion,reaching approximately 230 με at 28 days with 10%anti-cracking agent,without adversely affecting the mechanical prop-erties.Application monitoring in a practical engineering project revealed that the central deformation of concrete remained expansive during the cooling phase,and no cracks were observed during the service period.
Keywords：moderate heat cementthree-grade concreteanti-cracking agentcrack resistanceengineering application
Publication Date：2026-02-25
Online Publishing Date：2026-03-25(First online date of this platform, not the publication date of the document)
Pages：6( 62-66,93 )