The weather in Iraq is hot in summer and cold in winter. Therefore , the
thermal insulation is of the main problems facing the engineers working in
building and housing sector
The paper presents an experimental investigation, It includes preparation of
several concrete mixes using lightweight aggregate (siporex and porcelinite &
suwdast ) to obtain light weight concrete of two densities ranging from (350-880
kg/m3), which provides a good thermal insulation. Based on the analysis of
experimental results several graphs and Tables have been prepared and presented
which can be used in the mix design of similar siporex concrete of densities from
(350-880 kg/m3) . The physical properties of siporex concrete , have been found
which included density (765-822kg/m3) , compressive strength (1.51-2.2 N/mm2)
& (2.8-3.7 N/mm2) ,thermal conductivity ( 0.19-0.39 W/M.K) for the two groups