Improve the thermal and mechanical properties of foam polystyrene by gebrile soil

In this research we tried to improve the thermal insulation efficiency of polystyrene foam by adding some natural materials. The gebrile soil was selected for several reasons, including abundance and ease processing before addition - There are many previous researches treatment -. We have found at ratio 20%(The proportion in compound) coefficient conduction is low then rises after percentage As absorption water it increases increasing soil, but within permissible limit according specifications required materials also compressive strength increase with because mechanical links between polycarbonate particles composite-material’s density general.