Influence of heavy metals on thermal conductivity of clay as a building material
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Date
2019-10
Journal Title
Journal ISSN
Volume Title
Publisher
Informa UK Limited, trading as Taylor & Francis Group.
Abstract
Thermal conductivity of contaminated clay is an emerging field of interest in
building construction. This study investigated the influence of some heavy
metals on thermal conductivity of clay. The objective of this study is to
investigate the influence of heavy metal in clay for energy-efficient in building
constructions. The clay sample was collected from clay deposit and prepared.
The samples were mixed (contaminated) with nitrates of Pb, Fe, Zn, Ni and Cu
at different concentrations and slabs then were formed. The thermal con ductivity of clay slabs were measured to determine the suitability of con taminated clay as building material for heat emitting modern equipment
room. The thermal conductivity of clay slabs contaminated with nitrate of
Pb, Fe, Zn, Ni and Cu ranged 0.06–0.15 Wm−1
K−1
; 0.06–0.18 Wm−1
K−1
;
0.06–0.22 Wm−1
K−1
; 0.06–0.19 Wm−1
K−1 and 0.06–0.38 Wm−1
K−1
, respectively.
Results showed that thermal conductivity of clay increases with increase in
the concentration of heavy metal absorbed by the clay to an optimum level.
Hence, heavy metals influenced the thermal properties of clay building
material.