Engineering Properties of Laterite Stone Scrap Blocks
A study was conducted to determine the engineering properties viz. compressive strength, toughness index and water absorption capacity of the laterite stone scrap blocks. Paddy husk ash, saw dust and processed fly ash were used as other constituents and added to the laterite stone scrap in the range of 3 to 9%, 3 to 9%, 20 to 30% respectively. The cement was used as binding material and added in the range of 8 to 16%. The maximum compressive strength 13.6 N/mm2 was observed for the block having 68% laterite stone scrap, 8% cement and 20% processed fly ash. The maximum toughness index of 14.3 was observed for the block having 81% laterite stone scrap, 16% cement and 3% paddy husk ash. The minimum water absorption capacity of 18.6 was observed for the block having 84% laterite stone scrap and 16% cement. The lowest cost of laterite stone scrap block was found to be Rs. 22.94 for the block having 85% laterite stone scrap, 12% cement and 3% paddy husk ash which satisfies BIS standards.