The Effect of Anadara Granosa Shell Waste as a Filler and a Coarse Aggregate Subtitution on the Mechanical Properties of Normal Concrete (Published)
The amount of stone mining as a natural resource is decrease, innovation for concrete needed to making a concrete. Anadara granosa shell waste can be used as an alternative material that can be optimally utilized to make concrete. Anadara granosa shell waste itself contains calcium which can be used as a concrete mixture. It is possible that the waste shells can be used as a substitute for gravel in concrete and as a cement filler. To analyze the effect of Anadara granosa shell waste in concrete, a cylindrical specimen was made with a diameter of 15 cm and a height of 30 cm. Mechanical tests on normal concrete include compressive strength, modulus of elasticity and split tensile strength. The percentage of gravel substitute is 0%, 1.5%, 2%, 3%, 3.5% of the weight of the gravel and the percentage of cement filler is 0%, 1%, 3%, 6%, 9% of the weight of cement. The compressive strength of the concrete plan is 30 MPa. The result of this research is that when the Anadara granosa shell waste is used at the ideal percentage, the concrete will experience an increase in the concrete’s mechanical properties. The percentage of gravel substitute is 1.5% by weight of gravel and cement filler is 1% of cement weight, resulting in compressive strength of 37.37 MPa, modulus of elasticity of 28720.44 and split tensile strength of 2.95 MPa where these results exceed compressive strength. Normal concrete and the compressive strength of a predetermined plan. If the percentage of shellfish waste is greater, the mechanical properties of the resulting concrete will decrease. The results show that the mechanical properties of concrete are interrelated where the higher the compressive strength, the higher the modulus of elasticity and tensile strength.
Keywords: Compressive Strength, Concrete, Filler, Mechanical Properties, shell waste