摘要
混凝土对太阳辐射的吸收率直接影响混凝土结构内温度场分布以及温度效应。由于混凝土材料的物理力学性能离散性大 ,施工条件多样 ,使用环境千差万别 ,目前尚无对太阳辐射吸收率研究的系统而成熟的成果。结合太阳能利用原理和热工规范等 ,对不同颜色、不同粗糙度混凝土表面 ,进行太阳辐射吸收率的探索性试验 ,初步提出在考虑温度作用的混凝土结构设计中 ,其表面太阳辐射吸收率的建议取值。
The field of temperature distribution and the effect of temperature in concrete structure are directly influenced by solar absorption coefficient of concrete.Since the physical properties of concrete are in vast scatter,the coustructional condition is various and the service enviˉroment is very different,there are not series and complete rezults for the measurement of solar absorption coefficient of concrete.Considered the theory of heat transfer and the code of thermal engineering,a tentative test for measuring the solar absorption confficient of concrete,which surface is with different colour and different roughness,has been down.And some recommended values are listed at the end of the paper.
出处
《混凝土与水泥制品》
北大核心
2004年第4期8-11,共4页
China Concrete and Cement Products
关键词
混凝土结构
太阳辐射
温度
吸收率
Concrete structure
Solar radiation
Temperature
Absorption coefficient
