Improve Light Weight Concrete Characteristics by Adding Paraffin Wax as Moisture Proof

The development of structural materials used in the building process is certainly subject to the local and temporal potentials and to how the extent to which the human thought made in the scientific and industrial field. Where the constructional methods that depend on pottery, bricks were and still essentially adopted. The advanced human thought attempted making more efforts to find constructional materials of certain specifications. Porous concrete Light Weight Concrete (LWC) is considered a good alternative constructional material in addition to its light weight and good thermal isolation. It is currently used in Iraq as concrete block to form breakers only. This research includes essential information about LWC and developing it through the adding paraffin wax to generate a material of high moisture isolation, low absorption rate and high bearing for compressive forces especially after overflowing it with wax.