Abstract
The aim of this work is to study the effect of the incorporation of wood ash from the combustion of
biomass waste on the thermal properties of compressed earth bricks (BWA). These bricks were obtained as a
partial substitution of the soil with different contents (0, 5, 10, 15 and 20% wt). The specimens manufactured
were compacted with a compaction stress at 10 MPa, conserved in the laboratory at a temperature of 20 ± 2 °C,
then allowed to harden for 7 and 28 days. The results showed that the partial substitution of the soil leads to a
decrease in thermal properties.Thermal conductivity values were decreased to different soil substitution
proportions and with curing time. Minimum values were achieved for specimens containing 20% by weight of
WA, with better thermal insulation, at thermal conductivity values ranging from 0.78 W/mK in BWA at 28 days
and 1 W/mK in BWA at 7 days. This decrease was attributed firstly to the quantity of water consumed during the
pozzolanic reaction that occurs between the soil components and the lime of the WA, secondly to the
microstructure of this soil used.
Details
| Primary Language | English |
|---|---|
| Subjects | Engineering |
| Journal Section | Articles |
| Authors | |
| Publication Date | December 31, 2022 |
| Published in Issue | Year 2022 |
