With the rapid development of the construction industry,a large number of underground cast-in-place concrete projects have appeared,and the problem of concrete cracking has become a major problem in underground projects.In order to reduce the harm caused by concrete cracking on underground projects,the self-compacting temperature-suppressing and waterproofing composite materials that reduce the heat of hydration and enhance the crack-resistant properties are used as the anti-cracking materials for concrete,and the effect of self-compacting temperature-suppressing and waterproofing composite materials on the temperature-suppressing rate of the cement slurry and the performance of the stress and compressive strength of the concrete are investigated.The results show that the incorporation of self-compacting temperature-suppression composite material makes the temperature-suppression rate of cement mortar reach 40.7％,and the strains in the middle and the lower part of the basement sidewalls are reduced by 30.2％and 13.7％,respectively,and at the same time,there is no negative impact on the compressive strength of concrete,which reduces the cracking of concrete and improves the quality of the underground project.
关键词
自密实/防水/水化热抑制剂/温度收缩/复合材料
Key words
self-compacting/watertight/hydrothermal inhibitors/temperature contraction/composite material
维普
万方数据