Construction block

Claim 1

A construction building block formed of a lightweight, molded plastic material comprising: a pair of half members, one of said half members being located in a reversed facing relationship relative to the other said half member forming therebetween an opening assembly, said half members being identical, said half members forming a front wall and a back wall and a top surface and a bottom surface, said front wall being connected to said back wall by a pair of spaced apart side walls, said top surface and said bottom surface and said side walls forming a peripheral edge of said construction building block; and first interlocking means connected to said back wall, said first interlocking means of said one half member interlockingly matingly engaging with said first interlocking means of the other said half member, said first interlocking means being composed of a plurality of upstanding members, said first interlocking means being located within said opening assembly, said upstanding members comprising a plurality of connected pairs, each said connected pair including a polygonal shaped male member and a polygonal shaped female member with the said male member adhesively matingly engaging with its respective said female member, said opening assembly forming a plurality of openings between said connected pairs of said upstanding members, said openings extending between said top surface and said bottom surface, upon said building block being located in a vertically orientated stacked relationship said openings between vertically joined said building blocks forming a plurality of separate openings adapted to accommodate a quantity of poured masonry cement which when hardened provides the necessary strength for a wall structure produced by said building blocks.