Pengaruh Kadar Lumpur Agregat Halus 5%, 7,5%, 10%, 12,5%, dan 15% terhadap Kuat Tekan dan Kuat Tarik Belah

Concrete in infrastructure development in various regions in Indonesia is currently growing rapidly and is almost the best infrastructure development in the history of development in Indonesia. However, this growth has not been matched by the quality of the construction, especially in concrete work which is sometimes still wrong in its construction. In the implementation of the project, everything must be in accordance with the specified specifications. Like the mud content that is not considered in the implementation of the project. The purpose of this study is to determine how much influence the sludge levels will have on the project implementation if it is given a burden that will have a significant impact or not. This test uses cylindrical concrete samples measuring 15 cm in diameter and 30 cm high with K125 concrete quality (low quality) with varying sludge content, namely 5%, 7.5%, 10%, 12.5% and 15% . Concrete testing conducted in this study is the compressive strength and tensile strength. In compressive strength, the best value is 5% = 12.21 MPa, 7.5% = 11.05 MPa, 10% = 8.87 MPa, 12.5% = 6.57 MPa, and 15% = 5, 12 MPa. And the value of tensile strength, the best value obtained is 5% = 48.51 MPa, 7.5% = 51.87 MPa, 10% = 53.12 MPa, 12.5% = 28.31 MPa, and 15% = 41.24 MPa