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Desi Sandy
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Civil Engineering, Building, Construction & Architecture Transportation

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Pengujian Batu Apung Sebagai Filler Pada Campuran HRS -WC Sri Yanti; Rosiana; Desi Sandy; Alpius
Paulus Civil Engineering Journal Vol 1 No 2 (2019): Volume 1, No.2, Desember 2019
Publisher : Program Studi Teknik Sipil UKI Paulus-Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (868.278 KB) | DOI: 10.52722/pcej.v1i2.62

Abstract

Penelitian ini dimaksudkan untuk merancang komposisi dan menganalisis karakteristik marshall dan indeks kekuatan sisa campuran Lataston HRS-WC gradasi senjang dan semi senjang yang memanfaatkan batu apung dari Provinsi Maluku Utara, Pulau Ternate sebagai pengganti filler. Metodologi dalam penelitian ini adalah melakukan serangkaian pengujian karakteristik berupa agregat kasar, halus dan filler lalu merancang komposisi campuran kemudian pembuatan benda uji berupa campuran Lataston HRS-WC bergradasi senjang dan semi senjang serta pengujian Marshall untuk mendapatkan karakteristik campuran dan pengujian Marshall Immertion untuk mendapatkan Indeks Perendaman (IP) / Indeks Kekuatan Sisa (IKS) / Durabilitas campuran yang berkadar filler optimum. Hasil penelitian menunjukkan bahwa karakteristik abu batu apung memenuhi spesifikasi sebagai bahan pengganti filler pada campuran Lataston HRS-WC gradasi senjang dan semi senjang. Melalui uji Marshall diperoleh karakteristik campuran Lataston HRS-WC bergradasi senjang dan semi senjang dengan kadar aspal 6,75%. Hasil pengujian Marshall Immertion campuran Lataston HRS-WC bergradasi senjang dan semi senjang dengan kadar filler optimum 100% mendapatkan Indeks Perendaman (IP) / Indeks Kekuatan Sisa (IKS) / Durabilitas campuran sebesar 95,73% dan 96,66% yang artinya campuran tersebut tahan terhadap suhu, lamanya terendam air. Kata Kunci : Karakteristik, HRS-WC Marshall, filler batu apung
Karakteristik Beton Mutu Tinggi dengan Substitusi Slag Baja dan Slag Nikel Sebagai Agregat Kasar Komang Saka Suwindu; Desi Sandy
Paulus Civil Engineering Journal Vol 2 No 1 (2020): Volume 2 No.1, Maret 2020
Publisher : Program Studi Teknik Sipil UKI Paulus-Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (331.768 KB) | DOI: 10.52722/pcej.v2i1.115

Abstract

This study aims to determine the value of compressive strength, split tensile, and flexural strength in high quality concrete with variations in the substitution of steel slag and nickel slag as a substitute for coarse aggregate. Concrete tests performed include compressive strength, split tensile strength, and flexural strength. The research process starts from checking the characteristics of slag, and fine aggregate then mix designs and make test specimens in the form of cylinders of 150 mm x 300 mm as many as 36 pieces and beams of 150 mmx 150 mm x 600 mm as many as 9 pieces. The results showed the substitution of steel slag and nickel slag on compressive strength, split tensile strength, and flexural strength, the greater the percentage of nickel slag, the greater the increase in compressive strength, split tensile strength and flexural strength. Compressive strength value with 20% nickel slag substitution increased 3.347%; and for 30% nickel slag substitution increased by 4.603%. The value of split tensile strength with 20% nickel slag substitution increased by 30.137%; and for 30% nickel slag substitution increased by 46.585%. The value of flexural strength with substitution of 20% nickel slag increased 31.674%; and for 30% nickel slag substitution increased by 66.179%. The relationship between compressive strength and average tensile strength obtained in high quality concrete with nickel slag substitution 0%, 20%, 30% at 28 days is 9.3%. The relationship of compressive strength with the average flexural strength obtained in high quality concrete with nickel slag substitution of 0%, 20%, 30% at 28 days is 0.621 .
Pengaruh Agregat Sungai Battang Terhadap Kekuatan Beton Dendi Nadaf Mantja Mantja; Desi Sandy; Tjiang. A. Gunadi
Paulus Civil Engineering Journal Vol 2 No 4 (2020): Volume.2 No.4, Desember 2020
Publisher : Program Studi Teknik Sipil UKI Paulus-Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (551.095 KB) | DOI: 10.52722/pcej.v2i4.180

Abstract

The purpose of this study was to determine the aggregate characteristics and concrete strength of the Battang River material. This type of research uses the American Concrete Institute method with the identification of cylindrical specimens with a diameter of 15 cm and a height of 30 cm, a beam with a length of 60 cm, a width of 15 cm, a thickness of 15 cm. The results of the research on the plan compressive strength test 23 Mpa, amounting to 23.861 Mpa, the compressive strength plan 30 Mpa, amounting to 31.501 Mpa, the split tensile strength test with the compressive strength plan 23 Mpa is 1.957 Mpa, and the compressive strength plan 30 MPa is 2.769 Mpa, the strength test flexural compressive strength plan 23 Mpa is 3.022 Mpa, for compressive strength plan 30 Mpa is 3.425 Mpa. The aggregate characteristics of the Battang river meet the Indonesian National Standard and can achieve the planned compressive strength value.
Pengaruh Suhu Waktu Pengecoran Terhadap Kuat Tekan dan Tarik Beton Nita Bonita Rombe; Junus Mara; Desi Sandy
Paulus Civil Engineering Journal Vol 2 No 4 (2020): Volume.2 No.4, Desember 2020
Publisher : Program Studi Teknik Sipil UKI Paulus-Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.079 KB) | DOI: 10.52722/pcej.v2i4.182

Abstract

This study discusses how much influence the temperature of the casting time has on the compressive strength and tensile strength of concrete. The purpose of this study was to determine how much influence the temperature of the casting time has on the optimal compressive strength and tensile strength of concrete. The test specimen for normal concrete mixtures with a compressive strength plan of f'c = 30 Mpa, using a cylinder with a diameter of 15 cm and a height of 30 cm was 36 pieces. The casting of test objects is carried out with variations in time temperature in the morning, afternoon, evening, and night. The test results show that the maximum compressive strength and split tensile strength of concrete are 31.31 MPa and 2.64 MPa at 23 ° C in the morning. The temperature of the casting time does not significantly affect the compressive and tensile strength of the resulting concrete.
Co-Authors Alpius Dendi Nadaf Mantja Mantja Junus Mara Komang Saka Suwindu Nita Bonita Rombe Rosiana Sri Yanti Tjiang. A. Gunadi