Abstract
The use of waste and by-product materials as aggregate or cement replacement in concrete can provide a solution to reducing the negative impact of the concrete industry. This paper reports an investigation to produce green concrete by using oil palm shell (OPS) as coarse lightweight aggregate as well as ground granulated blast furnace slag (GGBFS) as supplementary cementing material subjected to different curing conditions. Test results show that it is possible to produce green structural lightweight aggregate concrete containing 50% waste materials (by volume of concrete) with 28-day compressive strength of about 33 MPa. Data show that OPS concrete is very sensitive to curing, especially when GGBFS is used as a supplementary cementitious material.
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