摘要
建筑大体积结构会因水泥水化热的作用而在混凝土内部产生温缩拉应力,若采取的施工控制技术不当就会产生危害性裂缝。本项目在大体积筏板基础施工时,采取使用低水化热水泥、掺入外加剂降低水泥用量、提高混凝土抗裂性能、采用施工新工艺、加强养护等综合措施,避免了温度裂隙的产生。
The large-scale structure of a building will cause temperature shrinkage tensile stress in the concrete due to the effect of cement hydration heat.If the construction control technology is adopted improperly,it will cause hazardous cracks.During the construction of large-scale raft foundations,comprehensive measures such as the use of low-hydration thermal cement and the addition of admixtures are adopted to reduce the amount of cement,improve the crack resistance of concrete,adopt new construction techniques,strengthen maintenance and avoid the occurrence of temperature cracks.
作者
焦明
JIAO Ming(China Railway No.17 Bureau Group Construction Engineering Co.,Ltd.,Taiyuan 030000,China)
出处
《价值工程》
2020年第3期266-268,共3页
Value Engineering
关键词
大体积混凝土
温缩应力分析
降温措施
温控监测
mass concrete
temperature shrinkage stress analysis
cooling measures
temperature control monitoring
