摘要
针对地中海气候条件下Ashdod港TRS胸墙大体积混凝土浇筑过程的温控问题进行计算和实测数据分析,浇筑温度、最高温度、最大温差和边界约束是影响混凝土浇筑质量的主要因素。结合工程实际制定温控施工标准:混凝土入模浇筑温度应≤28℃,混凝土内部水化热最高温度应≤60℃,监测最大温差应≤18℃,2层浇筑时间间隔应控制在15d以内。将两层浇筑改为一次性浇筑降低边界约束的影响。通过计算及实测数据分析为TRS胸墙施工过程提供温控标准参考并指导实际施工。
The paper calculated and analyzed the temperature control of the mass cast-in-situ concrete of TRS breast wall in Mediterranean climate,which locates in Ashdod port of Israel. The quality of cast-insitu concrete were correlated with the cast-in-situ temperature, the maximum temperature and the maximum temperature difference in the hydration process,and the boundary constraint. Combined with the project to develop temperature control construction standards： the temperature of casting concrete is no more than 28℃,the maximum temperature of concrete which in hydration process must be controlled in 60℃,and the maximum temperature difference shall not be exceeded 18℃,and the time interval that two layers concrete pouring should be controlled in 15 days. The effect of changing the two-layer cast-insitu concrete to the one-layer cast-in-situ concrete reduces the boundary constraint. The analysis results could provide references for the development of thermal control standards in construction.
出处
《施工技术》
CAS
2018年第2期103-106,115,共5页
Construction Technology
关键词
混凝土
地中海气候
码头
TRS胸墙
温度控制
concrete
Mediterranean climate
wharf
TRS breast wall
temperature control
