This paper investigates the strength characteristics of sandcrete blocks in which the
sand is replaced partially with crushed waste glass (CWG) in the first test. In the
second test the cement is partially replaced with crushed waste glass in the
sandcrete block production.
Results of the first test showed that the inclusion of crushed waste glass in the sandcement matrix increased the strength of the blocks by between 30 and 33 percent. The percentage increase depended on the mix proportion used in the manufacture of the blocks. The optimum CWG content varied between 15 and 20%. In the second test there was an increase of between 23 and 74 percent in the compressive strength values obtained for the blocks depending on the mix proportion used and the size of the blocks tested. The optimum CWG content was found in this case to be about 5 percent for both mix proportions used in the block manufacture.