ENIVRONMENT ASIA

Volume 12, No. 01, Month JANUARY, Year 2019, Pages 36 - 48

Characteristics of concrete bricks after partially substituting portland cement type 1 with cement and seashell waste and partially substituting sand with glass waste

Chanya Punthama, Nuta Supakata, and Vorapot Kanokkantapong

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To manage solid waste from Si Chang Island, concrete bricks were produced by partially substituting Portland cement Type 1 with green mussel/cockle seashell waste and cement waste and sand was partially substituted with glass waste. In producing bricks, water, cement, and sand were mixed at a weight ratio of 11.11:22.22:66.67. Using seashell waste (cockle seashells and green mussels) in concrete bricks as partial replacement of cement and cement waste, the results showed that the addition of seashell waste content decreased the compressive strength and increased the water absorption of the bricks. The optimal mixture of cement, cement waste, and seashell waste was at a weight ratio of 19:2.11:1.11 in which the compressive strength and water absorption of the bricks produced from cockle seashell waste were 6.41 MPa and 7.44%, respectively, and those from green mussel waste were 6.30 MPa and 7.91%. In addition, by replacing sand with glass waste, the results revealed that compressive strength and water absorption were decreased when glass waste was increased. In conclusion, concrete bricks produced by partially substituting Portland cement Type 1 with cement waste and seashell waste and partially substituting sand with glass waste are compliant with TIS 57-2533 with an optimal ratio of 19: 2.11: 1.11: 56.67: 10: 11.11 (Portland cement Type1: cement waste: seashell waste: sand: glass waste: water) by weight.

Keywords

Concrete bricks; Cement waste; Seashell waste; Glass waste

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