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
Coconut Fiber Usage for the Compressive Strength Brick Materials (Published)
This study was conducted to calculate the strength of brick materials that already mixed with fibers of coconut. Using coconut fiber mixture was aimed at producing a better composition of concrete. An experimental design was applied to the composition of cement, sand, water and coconut fiber with a ratio of 1 PC cement. It made the ratio was 4.5 PS sand. The strength testing or compressive strength after the materials have been dried as long as 28 days. The averaged at variation I (0%) of 1 kN / cm2, variation II (1.5%) of 0.498 kN / cm2, variation III (1.8%) of 0.441 kN / cm2 and variation IV (2.1%) of 0.379 kN / cm2 were done. It concluded the addition of coconut fiber with brick materials produced has a decreasing compressive strength value.
Keywords: Compressive Strength, Test, coconut fiber, materials of brick
Effect of Various Types of Fillers on Mechanical Properties of Concrete (Published)
An experimental study on the effect of inclusion of three different types of fillers on mechanical properties of concrete is carried out. This paper presents the results of laboratory tests of 72 concrete cylindrical specimens of 10 cm diameter and 20 cm length with inclusion of Vf=10% of steel fillers, cast iron fillers and stone powder fillers in the concrete mix. Permeability, Compressive strength and splitting tensile strength are investigated by comparing the density of different types of concrete. Test results demonstrated that the stone powder fillers significantly improve mechanical properties of concrete while the cast iron fillers decline.
Keywords: Compressive Strength, Filler, Modulus of Elasticity, Splitting Tensile Strength, density