高温对水泥混凝土路面质量影响及温度控制措施  

Impacts of hot weather on the qualities of cement concrete pavement and temperature controlling measures

作　　者：郭保林[1] 刘培刚 孙日双 马伟强 

机构地区：[1]山东省交通科学研究所,山东济南250031 [2]山东省交通规划设计院,山东济南250031 [3]潍坊市公路勘察设计院,山东潍坊261031

出　　处：《混凝土》2007年第6期99-103,共5页Concrete

摘　　要：水泥混凝土路面是典型的板状结构,周围环境条件如温度、相对湿度以及风速等对混凝土的浇筑、压实、饰面以及长期路用性能影响较大。高温条件对早期混凝土质量如工作性、早期强度和塑性收缩以及长期性能如强度、体积稳定性和耐久性的影响不可忽视。在总结高温条件对混凝土早期、长期质量影响的基础上,认为路面混凝土浇筑时控制其温度对路面的长期性能至关重要。对目前通常采用的控制混凝土浇筑时温度的措施如改善配合比、降低混凝土组分温度和合理的养护措施等作了详细介绍。The impacts of ambient temperature,relative humidity and wind speed on concrete placement,compaction,finishing and the long-term properties are significant, especially for cement concrete pavement——a typical slab structure.The influence of hot weather on early-age concrete qualities such as workability, strength and plastic shrinkage and long-term performances like strength, volumetric stability and durability can not be ignored.The significance of controlling the concrete temperature during the process of mixing,placement and compaction for the long-term performances can not be over-emphasized,based on the conclusions of the hot weather around the pavement effects on concrete early-age and long-term qualities.The current methods of controlling concrete temperature such as modifying of concrete proportion,decreasing the temperature of concrete ingredients and taking some curing and protection measures are presented in detail.

关 键 词：高温条件 水泥混凝土路面 温度控制 早期养护 

分 类 号：TU528.01[建筑科学—建筑技术科学]