Pemanfaatan Limbah Kulit Kerang Darah (Anadara Granosa) Sebagai Pengganti Sebagian Agregat Halus Dan Penambahan Polyetylene Terephtalate (PET) Sebagai Serat Pada Beton

Ridwan, Muhammad (2020) Pemanfaatan Limbah Kulit Kerang Darah (Anadara Granosa) Sebagai Pengganti Sebagian Agregat Halus Dan Penambahan Polyetylene Terephtalate (PET) Sebagai Serat Pada Beton. Other thesis, Universitas Islam Riau.

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Abstract

Shell waste is one type of local waste that is easily available and has not been widely used. One of the uses of shellfish waste is to use it as fine aggregate in concrete. One of the equations made is to make the shell fine aggregate have a volume weight that is almost the same as the fine aggregate. Plastic bottle waste or polyetylene terephthalate (PET) is used as fiber in concrete, this is because polyetylene terephthalate fibers have low density and do not absorb water, so these fibers do not significantly change the physical properties of concrete but can change the mechanical properties of concrete. This study aims to determine the effect and comparison of the addition of shellfish waste and the addition of plastic bottle fiber / polyetylene terephtalate (PET) on the compressive strength, split tensile strength and flexural strength of concrete against normal concrete. This study uses a sample cylinder and block. The percentage of waste shells used is 10% from fine aggregate and the addition of plastic bottle fiber / polyetylene terephthalate (PET) 0.6%; 0.8%. The method used in the calculation of the concrete mix (mix design) is based on SNI 03-2834-2000. Concrete testing was carried out at the age of 28 days. The result of the highest concrete compressive strength is the variation of the concrete mixture of 10% shellfish waste without polyetylene terephthalate fiber, namely 31.690 MPa, which is an increase of 12% from normal concrete. The test results for the highest tensile strength of concrete, namely the variation of the concrete mixture of 10% shellfish waste and the addition of 0.8% polyetylene terephthalate fiber, namely 3.309 MPa, which is an increase of 28% from normal concrete. The highest concrete flexural strength test results in normal concrete mixtures with a flexural strength value of 5.215 MPa. From all the test results show that, the combination of the two types of waste can improve the shortcomings of concrete properties of its tensile value, where the polyetylene terephthalate fiber is able to withstand and increase the tensile value of the concrete itself, except in the concrete flexural strength test, where the results of these tests show a decrease. along with the addition of a variety of polyetylene terephthalate fibers. The use of various mixtures of shells and polyetylene terephthalate fibers can be used in the construction of medium-quality structures (20-45 MPa) such as building diaphragm structures.

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