Analysis of the hygrothermal functional properties of stabilised rammed earth materials
By M. R. Hall, D. Allinson. 2009
143 citations recorded by the source corpus.
Abstract Suitable experimental methodologies for determining the hygrothermal properties of stabilised rammed earth (SRE) materials have been presented along with comparative experimental data for three different SRE mix designs with parametric analysis of the influence of these variables on material function. Higher bulk porosity corresponds to reduced volumetric heat capacity (C), but increased sorptivity (S) and vapour permeance (W). Since bulk porosity and void size distribution (VSD) are interdependent variables, it follows that for constant particle size distribution (PSD) and compaction energy an increase in porosity results in an increase in the mean pore radius, r ¯ for a material. This explains why the magnitude of liquid/vapour transfer (S and W) terms are inversely related to the hygroscopic moisture capacity, ξ since the capillary potential, Ψ will increase when the mean pore diameter decreases. The implications are that the hygrothermal properties of SRE materials can be designed and predicted by manipulating particle size distribution and compaction energy.
Subfields: Building and Construction, Civil and Structural Engineering, Complementary and Manual Therapy
View Paper: https://www.semanticscholar.org/paper/1511d5f22e98e46b8622cbea8ac972411094e6f3
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In Building and Construction
In Civil and Structural Engineering
In Complementary and Manual Therapy
Citations in the corpus
- Conditions affecting the moisture buffering measurement performed on compressed earth blocks (2014, methodology): “In Hall and Allinson (2009), the moisture storage capacity is determined using the pseudo-linear section of the sorption isotherm which is in the middle range of the isotherm.”
- Hygrothermal properties of earth bricks (2014, background): “The few sorption isotherms measured on earthen materials [6,7,13] only Muscovite”
- Characterization of the mechanical and physical properties of unstabilized rammed earth: A review (2020, background): “6 between particles in partially saturated soils [85,86].”