Assessing the effects of soil grading on the moisture content-dependent thermal conductivity of stabilised rammed earth materials
Assessing the effects of soil grading on the moisture content-dependent thermal conductivity of stabilised rammed earth materials
复制标题
DOI：
10.1016/j.applthermaleng.2008.03.051
复制
发表时间：
2009-03-01
影响因子：
6.4
通讯作者：
Allinson, David
中科院分区：
文献类型：
--
作者：
Hall, Matthew;Allinson, David
新的数据都干燥状态和水分含量依赖的水泥稳定的夯实的地球（SRE）材料的导热系数。对于高度压实的SIZE材料，没有发现导热系数和干密度或空隙率之间的相关性。SIZE材料的热导率随着材料的饱和比S（r）线性增加，并且可以表示为λ * 水分含量依赖的热导率。λ * 对SIZE材料饱和比增加的敏感性根据土壤等级而变化。级配参数对λ * 的影响可导致约0.8 m（2）K/W的材料变化。实验数据已被应用到标准的SRE墙设计配置和总热阻上的墙壁含水量的效果已被显示。SRE墙的R值与空腔隔热无关，可变化多达0.13 m（2）K/W。(C)2008爱思唯尔有限公司保留所有权利。
New data for both the dry-state and the moisture content-dependent thermal conductivity of cement-stabilised rammed earth (SRE) materials is presented. For highly compacted SIZE materials, no correlation was found between thermal conductivity and dry density or void ratio. The thermal conductivity of SIZE materials increases linearly with the saturation ratio, S(r) of the material and can be expressed as lambda* the moisture content-dependent thermal conductivity. The sensitivity of lambda* to an increase in the saturation ratio of SIZE materials varies according to soil grading. The influence of grading parameters on lambda* can cause material variations of approximately 0.8 m(2) K/W. The experimental data has been applied to standard SRE wall design configurations and the effect of wall moisture content on the total thermal resistance has been shown. The R-value of an SRE wall irrespective of cavity insulation can vary by as much as 0.13 m(2) K/W. (C) 2008 Elsevier Ltd. All rights reserved.