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Frans Phengkarsa
Universitas Kristen Indonesia Paulus
Civil Engineering, Building, Construction & Architecture Transportation

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Pengaruh Penggunaan Agregat Batu Karang Sebagai Pengganti Agregat Halus Terhadap Beton Elsyanto Pararuk; Frans Phengkarsa; Suryanti Rapang Tonapa
Paulus Civil Engineering Journal Vol 5 No 2 (2023): Paulus Civil Engineering Journal, Volume 5, No.2
Publisher : Program Studi Teknik Sipil UKI Paulus-Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/pcej.v5i2.630

Abstract

Development is important to make human life improve and as a reallife support. Quality sturdy buildings are produced from products that are resistant to shocks to make the durability of the building also guaranteed. Concrete is made of materials mixed together, including sand, cement, gravel and aggregate which has a rough texture and smooth texture. In this study, coral was used as an added material in the concrete mixture. The purpose of this study was to determine the effect of using coral aggregate to replace some fine aggregate as a concrete mixture by testing compressive strength, tensile split, and modulus of elasticity with a concrete quality plan of 25 MPa. Based on the results of tests that have been carried out in cylindrical test specimens on several variations of 0%, 35%, 40% and 45% corroboration values of 26.233 MPa, 27.271 MPa, 27.648 MPa and 28.497 MPa, tensile strength values of 2.383 MPa, 2.524 MPa, 2.548 MPa and 2.689 MPa for elasticity modulus obtained values of 23056.250 MPa, 23249.712 MPa, 23518.210 MPa and 23780.946 MPa. From the results of research the use of coral in concrete mixture can affect the strength of concrete, the strength of concrete increases with the variation of rocks added and the strength of concrete will increase with the variation of rocks added.
Pengaruh Penambahan Abu Ijuk Pada Beton Normal Ika Tangma'ti; Frans Phengkarsa; Lisa Febriani
Paulus Civil Engineering Journal Vol 5 No 2 (2023): Paulus Civil Engineering Journal, Volume 5, No.2
Publisher : Program Studi Teknik Sipil UKI Paulus-Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/pcej.v5i2.639

Abstract

Concrete is one of the most commonly used building materials in the industrial sector. This is what encourages the use of palm fiber ash as an added ingredient in concrete. Palm fiber which is underutilized and left alone gives rise to a new idea, namely to use the palm fiber as an added ingredient in concrete. The American Concrete Institute (ACI) method was used to prepare the sample. The test is carried out when the concrete has passed the holding time of 7, 21 and 28 days.. The purpose of this study was to determine the effect of adding 3%, 6% and 9% palm fiber ash on compressive strength, split tensile strength and modulus of elasticity. In this research, the concrete quality is planned to be 50 MPa. From the test results, it was obtained that the concrete compressive strength values ​​for the percentage variations of 0%, 3%, 6% and 9% were respectively 26.893 MPa, 26.799 MPa, 21.892 MPa and 19.061 MPa, split tensile strength test for percentage variations of 0%, 3 %, 6%, and 9% respectively 2.453 MPa, 2.430 MPa, 2.170 MPa and 1.887 MPa, and testing the modulus of elasticity for the percentage variation of 0%, 3%, 6% and 9% respectively 22209, 358 MPa, 21064.331 MPa, 19496.646 MPa and 18971.406 MPa. From the proceeds of the study it can be concluded that the use of the addition of palm fiber ash as an added ingredient decreased with increasing variations in the percentage of palm ashes.
Pengaruh Penambahan Soda Potash Pada Air Sebagai Campuran Beton Eritson Prasetiawan; Frans Phengkarsa; Desi Sandy
Paulus Civil Engineering Journal Vol 5 No 3 (2023): Paulus Civil Engineering Journal Volume 5, No.3
Publisher : Program Studi Teknik Sipil UKI Paulus-Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/pcej.v5i3.719

Abstract

The purpose of adding soda potash to water for the mixture in this test is one way to determine the effect of soda potash on the concrete mixture. Jeneberang River is where coarse aggregate and fine aggregate are taken. One of the chemical stores, Makassar City, South Sulawesi is where potash soda is obtained. SNI 7656 – 2012 is the method used in Mix Design. 7, 21 and 28 days are the time for concrete compressive strength testing and the Compression Testing Machine tool is a tool used to determine the maximum concrete strength at the time of receiving compressive load. At a concrete age of 28 days variations of 0% were obtained (24,889 MPa), 7.5% (25,643 MPa), 10% (24,983 Mpa), and 12.5% (23,946 Mpa). Based on the test results, the average tensile strength of concrete was obtained for variations of 0% (2.286 MPa), 7.5% (2.475 Mpa), 10% (2.357 Mpa), and 12.5% (2.121 MPa). The average bending strength of concrete at variations of 0%, 7.5%, 10%, and 12.5% is 2.569 MPa, 2.795 MPa, 2.594 Mpa and 2.418 MPa. For the hsil modulus of elasticity test, test results were obtained at variations of 0% (23263.149 Mpa), 7.5% (23419.95Mpa), 10% (23391.058Mpa), 12.5% (23254.858Mpa).
Co-Authors Adam Creflo Rombe Daniel Surgawi Desi Sandy Dicaprio Resen Bunga' Elli Mercy Julmile Elsyanto Pararuk Eritson Prasetiawan Ermita Datu Puang Febriani, Lisa Ika Tangma'ti Luciana Buarlele Mega Paembonan Meisye Mitha Siranga Mikel Paa Tria Mahyuni Palian Yosua Kevin Jordan Randa