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All Journal Paulus Civil Engineering Journal Cerdika: Jurnal Ilmiah Indonesia
Desi Sandy
Universitas Kristen Indonesia Paulus
Humanities Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Health Professions Public Health Social Sciences Transportation

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Karakteristik Beton Mutu Tinggi Dengan Komposisi Slag dan Agregat Halus Batu Gamping Dicaprio Resen Bunga'; Frans Phengkarsa; Desi Sandy
Paulus Civil Engineering Journal Vol 3 No 2 (2021): Paulus Civil Engineering Journal Volume 3, Nomor 2, Juni, 2021
Publisher : Program Studi Teknik Sipil UKI Paulus-Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (215.48 KB) | DOI: 10.52722/pcej.v3i2.247

Abstract

In general, fine aggregate and coarse aggregate as the main components of concrete come from nature so that one day it will run out, alternative substitutes are needed. One of the alternative materials is Nickel Slag. Nickel slag is a type of rock dumped from the nickel industry. Limestone is also used as an alternative to fine aggregate. This study aims to determine the strength of concrete and the relationship between the characteristics of the concrete using nickeI sIag and limestone as a substitute for fine aggregate to the quality of the concrete. As for the variations of 0%, 10% and 20% and the percentage of using limestone as a substitute for fine aggregate is 10%. The method of mixing the concrete uses the SNI-03-2834-2000 method with a planned concrete quality of 42Mpa. From this research, it was found that the compressive strength of concrete with variations of 0%, 10% and 20% were respectively 42.360 MPa, 42.347 MPa and 41.781 MPa, the split tensile strength test with variations of 0%, 10% and 20% respectively was equal to 3.94 MPa, 3.064 MPa and 2.293 MPa and the flexural strength testing with variations of 0%, 10% and 20% were respectively 4.242 MPa, 4.068 MPa and 3.179 MPa. The relationship of split tensile strength for the variation of Nickel Slag variations 0%, 10%, and 20% is 9,242%, 7,178%, and 7% of the compressive strength, respectively, the relationship of split tensile strength for the variation of Nickel Slag variations 0%, 10%, and 20% of 0.65, 0.62, and 0.57 of compressive strength, respectively. From the resuIts of the study, it was concIuded that the concrete mixture with nickel and limestone slag substitution resulted in a decrease in strength as the percentage of nickel slag substitution increased.
Penggunaan Silica Fume Sebagai Substitusi Semen Dengan Bahan Tambah Abu Pecahan Karang Pada Beton Andika Pasulu; Jonie Tanijaya; Desi Sandy
Paulus Civil Engineering Journal Vol 5 No 1 (2023): Paulus Civil Engineering Journal, Volume 5, No.1
Publisher : Program Studi Teknik Sipil UKI Paulus-Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/pcej.v5i1.586

Abstract

Silica Fume is a very fine pozzolan material, which contains more silica composition than the rest of silicon production or silicon iron alloys. Silica fume is used in the form of powder as a cement substitution. This study aims to determine the effect of percentages using silica fume as a substitution of cement with coral fragment ash added material on the compressive strength, tensile strength and modulus of elasticity of concrete. This research is the SNI (f'c) 30 MPa method and a sample of cylindrical formations with dimensions of 150 mm x 300 mm. Based on the results of the study obtained, variations of Silica fume 9% and Coral Fractional Ash 0%, 5%, 7.5%, 10% obtained compressive strength values aged 28 consecutive days were 30,951 MPa, 32,744 MPa, 31,989 MPa, and 31,423 MPa, sample tensile strength test results of 3,161 MPa, 3,397 MPa, 3,491 MPa, and 3,303 MPa, elasticity modulus results of 28233,7885 MPa, 33486,8743 MPa, 32409.6667 MPa, and 30350.5834 MPa. From the results of research, the use of silica fume and coral fragment ash in concrete can affect the strength of concrete, where the value obtained varies. Compressive strength and elasticity modulus are maximum at 5% variation and maximum split tensile strength at 7.5% variation.
Pengaruh Abu Cangkang Kelapa Sawit Sebagi Substitusi Semen dan Agregat Sungai Pada Beton Elia Kelin; Junus Mara; Desi Sandy
Paulus Civil Engineering Journal Vol 5 No 1 (2023): Paulus Civil Engineering Journal, Volume 5, No.1
Publisher : Program Studi Teknik Sipil UKI Paulus-Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/pcej.v5i1.594

Abstract

Solid waste from palm oil, namely the shell, can be used as industrial fuel and the rest of the combustion contains a lot of silica. The boiler ash produced from burning palm shells contains 61% silica. Ash from palm shell boilers is made by burning shells at temperatures between 300 and 500 °C. The purpose of this study was to determine the effect of using palm shell ash as a substitute for part of cement and river aggregates that is optimal on the strength of concrete. Jeneberang River as a place for coarse and fine aggregate retrieval carried out in this study. The results showed that the use of palm shell ash as a substitution of cement and river aggregates at variation 9& met the compressive strength value of plan concrete, while variations of 11% and 13% did not meet the compressive strength of plan concrete. At a variation of 0% to 13% the value of the tensile strength of concrete and bending strength decreases. The relationship of compressive strength with split pull in each variation meets the conditions where it ranges from 7% to 11% while compressive strength with bending strength is obtained the value of the coefficient x is getting smaller.
Pengaruh Serbuk Besi Dan Natrium Silika Serta Natrium Hidroksida Terhadap Beton Yosua Kevin Jordan Randa; Frans Phengkarsa; Desi Sandy
Paulus Civil Engineering Journal Vol 5 No 1 (2023): Paulus Civil Engineering Journal, Volume 5, No.1
Publisher : Program Studi Teknik Sipil UKI Paulus-Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/pcej.v5i1.609

Abstract

The use of iron filings as a partial substitute for sand in concrete mixes is an alternative to reduce iron filings waste which can pollute the environment. This study used iron powder and sodium silica and sodium hydroxide in the concrete mixture which aims to determine the effect of the mechanical properties of the resulting concrete. In this study, a series of process stages were carried out which included testing material characteristics and then planning the composition of the concrete mix withmix design as well as making test specimens in the form of cylinders with a size of 15 cm x 30 cm as many as 48 test objects and blocks with a size of 60 cm x 15 cm x 15 cm as many as 12 test objects then testing the test objects with a predetermined concrete age of 7 days, 21 days , and 28 days.From the results of the study using iron filings with variations of 0%, 10%, 15%, 20%, the compressive strength values ​​were 25.146 MPa, 18.514 MPa, 17.505 MPa and 16.770 MPa, while the tensile strength values ​​obtained were 2.642 MPa, 1.463 MPa , 1.415 MPa, 1.345 MPa and the flexural strength values ​​obtained were 2.642 MPa, 1.463 MPa, 1.415 MPa and 1.345 MPa respectively. The results above show that the use of iron powder and sodium silica and sodium hydroxide can reduce the mechanical properties of concrete.
Penggunaan Limbah Gypsum dan Limbah Karbit Sebagai Substitusi Semen Terhadap Campuran Beton Triyana Vivin Wagio; Jonie Tanijaya; Desi Sandy
Paulus Civil Engineering Journal Vol 5 No 1 (2023): Paulus Civil Engineering Journal, Volume 5, No.1
Publisher : Program Studi Teknik Sipil UKI Paulus-Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/pcej.v5i1.610

Abstract

Carbide waste is the residue of carbide combustion where carbide waste has a similar content with cement. Gypsum waste is a remnant of the gypsum profiling industry. The purpose of the study is to determine the value and how the relationship affects the compressive, strength, tensile strength of splitting, and modulus of elasticity by using 5% gypsum waste and 8% and 12% carbide waste variations as substitution materials in cement . The research conducted is experimental on concrete mixtures. The planned concrete quality is 30 MPa with a test life of 3, 7.21, and 28 days with a 5% variation in gypsum waste and a variation in carbide waste of 0%, 8%, and 12%. Based on the results of compressive strength testing at 28 days for variations of 0%, 8%, and 12% obtained values of 31,038 MPa, 31,507 MPa, and 32,277 MPa. The results of the tensile strength test at variations of 0%, 8%, and 12% obtained values of 2,854 MPa, 2,902 MPa, and 2,996 MPa. In the modulus elaticity test at variations of 0%, 8%, and 12% obtained results of 27903,497 MPa, 30328,111 MPa, and 31570,793 MPa. In tests of compressive strength, split tensile strength, and modulus of elasticity obtained maximum values at a variation of 12%. With the relationship of compressive strength and tensile strength, results are obtained that are directly proportional to the increase in the percentage of carbide welding waste as well as the relationship of compressive strength and modulus of elasticity, results are obtained that are directly proportional to the increase in the percentage of carbide welding waste. The results show that the use of gypsum waste and carbide welding waste can increase the strength of concrete.
Pengaruh Silica Fume Pada Pembuatan Beton Polimer Irene Datuan; Jonie Tanijaya; Desi Sandy
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

Abstract

Concrete is a construction material composed of aggregate (coarse and fine aggregate), water, cement with or without additives. However, cement production can cause environmental damage such as air pollution. To reduce the use of cement is by using polymers. In the manufacture of polymer concrete, one of the cement substitute materials that can be used is silica fume. This research was conducted based on the Indonesian National Standard (SNI) method and was tested when the concrete had been soaked for 7, 21 and 28 days. This study used a cylinder with a diameter of 15 cm and a height of 30 cm. The results of the concrete test showed that the value (f'c) at 28 days for the 5% silica fume variation was 25.950 MPa and the 10% variation was 23.968 MPa. In testing the split tensile strength of concrete, the value of the split tensile strength of concrete (ft) at 5% silica fume variation is 2.666 MPa and at 10% variation is 2.571 MPa. From the results of the concrete elastic modulus (E) test, the average value of the 5% silica fume variation was 22883.316 MPa and at 10% variation it was 21710.136 MPa. From the test results it can be concluded that the use of silica fume as a substitute for cement can affect the compressive strength, split tensile strength, and modulus of elasticity of concrete.
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).
Pelatihan Pembuatan Bata Ringan Untung Peningkatan Ekonomi Masyarakat Di Kelurahan Talion, Tana Toraja Lisa Febriani; Desi Sandy; Karel Tikupadang; Pebrinar Riani Sangle; Sindy Banna’ Pilo; Yeryel Enrigue
Cerdika: Jurnal Ilmiah Indonesia Vol. 5 No. 1 (2025): Cerdika: Jurnal Ilmiah Indonesia
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/cerdika.v5i1.2433

Abstract

Ketersediaan sumber daya alam lokal, seperti pasir Sungai Maulu di Kelurahan Talion, Kabupaten Tana Toraja, memberikan potensi besar untuk mendukung pembangunan ekonomi dan sosial masyarakat setempat. Namun, kurangnya keterampilan dalam pengelolaan sumber daya tersebut menjadi tantangan utama. Penelitian ini bertujuan untuk meningkatkan kemampuan masyarakat dalam memproduksi bata ringan berbasis sumber daya lokal melalui pelatihan berbasis komunitas. Metode yang digunakan adalah deskriptif kualitatif dengan pendekatan partisipatoris, melibatkan masyarakat secara aktif dalam setiap tahapan, mulai dari sosialisasi hingga evaluasi hasil pelatihan. Hasil penelitian menunjukkan bahwa pelatihan ini berhasil meningkatkan pengetahuan dan keterampilan peserta dalam memanfaatkan bahan lokal, seperti pasir Sungai Maulu dan limbah sekam padi, untuk memproduksi bata ringan yang memenuhi standar SNI 8640:2018. Selain itu, pelatihan ini membuka peluang ekonomi baru bagi masyarakat melalui pengembangan usaha kecil berbasis produksi bata ringan. Implikasi penelitian ini menunjukkan bahwa model pelatihan berbasis komunitas dapat menjadi solusi efektif untuk mendukung pembangunan ekonomi lokal yang berkelanjutan dan dapat direplikasi di daerah lain dengan potensi sumber daya serupa.
Co-Authors Andika Pasulu Dicaprio Resen Bunga' Elia Kelin Eritson Prasetiawan Febriani, Lisa Frans Phengkarsa Irene Datuan Jonie Tanijaya Junus Mara Karel Tikupadang Pebrinar Riani Sangle Sindy Banna’ Pilo Triyana Vivin Wagio Yeryel Enrigue Yosua Kevin Jordan Randa