Reinforced Block Cored blocks with internal reinforcement made of rebar and concrete for load bearing walls. Get a FREE QuoteResources Reinforced Block ADVANTAGES Does not require additional structural support, no need of beams and columns. Savings of 50% in rebar and concrete compared with CMU Block. APPLICATION Load bearing, partition and exterior walls. WEIGHT 15 lbs/ft2 for 5” thick blocks without rebar or concrete. Data Sheet Material Safety