Experimental Studies on Reinforced Hollow-Block Concrete ...
conventional 20 x 20 x 40 cm concrete hollow-blocks. The average thickness of the face shell was 2.5 cm. The properties of the blocks were determined in accordance with ASTM C-140. The compressive strength of the masonry was determined using two techniques. In the first case, the net strength of one block was measured and found to be 11.66 MPa.