Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
649199 | Applied Thermal Engineering | 2009 | 8 Pages |
Abstract
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 SRE materials, no correlation was found between thermal conductivity and dry density or void ratio. The thermal conductivity of SRE materials increases linearly with the saturation ratio, Sr of the material and can be expressed as λâ, the moisture content-dependent thermal conductivity. The sensitivity of λâ to an increase in the saturation ratio of SRE materials varies according to soil grading. The influence of grading parameters on λâ can cause material variations of approximately 0.8 m2 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 m2 K/W.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Matthew Hall, David Allinson,