Abstract:
in this thesis, we aimed to recycle both used polystyrene from packaging and crushed
bricks from demolition waste, by using them as partial replacements for sand and
cement in the preparation of lightweight mortar mixes used for manufacturing
thermally insulating panels .Three substitution rates were adopted: (20%, 25%, and
30%) of the total sand volume replaced with polystyrene,and (05%,10%,15%) of the
total cement mass replaced with brick waste.
Various tests carried out on the samples showed that the recycled materials
contributed to reducing the weight of the mortar and improving its thermal properties,
while maintaining acceptable mechanical strength — confirming the relevance of this
approach from both environmental and technical perspectives.
