Analisis pengaruh perbedaan jenis agregat halus pasir Sungai Gendol, pasir Sungai Progo, dan abu batu pada campuran beton

Abstract

Aggregate is one of the materials that make up concrete which functions as a filler material for the concrete mixture. Fine aggregate is aggregate with small grain sizes, less than 5 mm in size. Of course there are various types of fine aggregate used. This difference in the type of fine aggregate may affect the quality of the concrete. This research used fine aggregates from the Gendol River, Progo River, and stone ash. The research test object is cylindrical with a diameter of 15 cm and a height of 30 cm. The tests in this research were concrete compressive strength, concrete split tensile strength, and concrete modulus of elasticity. Concrete mix planning is carried out based on SNI 2834-2000 with the planned concrete quality of 25 MPa. This paper aims to provide information on the effect of the type of fine aggregate on the compressive strength, split tensile strength, and modulus of elasticity of concrete and can be used as a reference in the selection of the type of fine aggregate for the needs of the planned concrete mixture. The research results show that the type of fine aggregate influences compressive strength, split tensile strength, and modulus of elasticity. The research results show that concrete with fine aggregate of the Sungai Gendol type produces the highest compressive strength, split tensile strength, and theoretical modulus of elasticity with values respectively 27.84 MPa, 2.62 MPa, and 25214.63 MPa. The Progo River type has the highest tested modulus of elasticity with a value of 25576.41 MPa. This type of rock ash has the lowest compressive strength, splitting tensile strength, test modulus of elasticity, and theoretical elastic modulus with values respectively 23.36 MPa, 2.19 MPa, 21709.07 MPa, and 22777.57 MPa.