| 混凝土湿热传导与湿热扩散特性试验研究(Ⅰ)--试验设计原理 |
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| 引用本文： | 刘光廷,黄达海.混凝土湿热传导与湿热扩散特性试验研究(Ⅰ)--试验设计原理[J].三峡大学学报(自然科学版),2002,24(1):12-18. |
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| 作者姓名： | 刘光廷 黄达海 |
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| 作者单位： | 1. 清华大学,水利水电工程系,北京,100084
2. 三峡大学,土木水电学院,湖北,宜昌,443002 |
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| 基金项目： | 中国博士后科学基金项目，清华大学“985”基金项目 |
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| 摘 要： | 了解不同含湿状态下混凝土的热物性与湿物性 ,对研究混凝土坝在不同时期的温度控制与表面保护措施具有重要意义 论述了“常功率平面热源法”测定混凝土湿热传导与湿热扩散特性的原理和方法 ,对影响测试精度的各个参数进行了误差传递分析 ,讨论了进行加热片热容修正的必要性 ,使整个试验能在设计的试验精度范围内展开 ,避免了试验安排的盲目性
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| 关 键 词： | 平面热源法 混凝土 导温系数 导热系数 |
| 文章编号： | 1007-7081(2002)01-0012-07 |
| 修稿时间： | 2001年12月10 |
Experimental Study on Thermal Conductivity and Thermal Diffusivity of Moist Concrete(Ⅰ)--Design Pinciple of Experimental Device |
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| Liu Guangting,Huang Dahai.Experimental Study on Thermal Conductivity and Thermal Diffusivity of Moist Concrete(Ⅰ)--Design Pinciple of Experimental Device[J].Journal of China Three Gorges University(Natural Sciences),2002,24(1):12-18. |
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| Authors: | Liu Guangting Huang Dahai |
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| Institution: | Liu Guangting 1 Huang Dahai 2 |
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| Abstract: | It is important to understand the thermal properties and moisture properties of concrete under different relative humidity so as to control its temperature as well as to take surface protection during its lifespan The principles and test methods to measure the thermal conductivity and thermal diffusivity of moist concrete using stable power plane heater,are described And some error transfer relationships in the test for several factors are analyzed Based on analysis,it is necessary to modify the thermal parameters of concrete because of heat capacity of the heater so that to control the precision of the results |
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| Keywords: | plane heater concrete thermal conductivity thermal diffusivity |
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