Utilization of Crushed Oyster Shell on Interlocking Block

Abstract

This research studies of crushed oyster shell (OSP) as a substitution for cement in producing the interlocking block. Research process are design the mixtures which contain 0, 10, 20, 30, 40 and 50%. Control water at optimum moisture content (OMC). Results of the tests the compressive strength at 7, 14, 28, 60, 90 days and the moisture absorbed at 28 days showed that increasing the amount of OSP decreased compressive strength and increased water absorption. By using OSP to replace cement, 10%, 20% passed the community product standard 602/2547, these were classified as non-load supportive type.