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Analisis Faktor Keterlambatan Dominan Pada Proyek Pemeliharaan Jalan (Studi Kasus: Jalan Seksi Sp. Dodinga – Sofifi – Akelamo – Payahe – Weda) Abdul Hamid Payapo; Nurmaiyasa Marsaoly; Abdul Gaus; Ichsan Rauf; Raudha Hakim
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.5762

Abstract

Road maintenance work or road preservation is very important to be carried out as a government effort to maintain the functional sustainability of the road. The delay in the implementation of this activity will not only have an impact on accessibility between regions, but will also cause losses for the contractor and project owner. The factors causing delays in the implementation of road preservation work vary widely and are different in each region. Thus, an understanding of these factors will provide important information in the management of future projects. This study conducted to analyze the dominant factors that cause the delays of road preservation projects in North Maluku, where the case study is in the Sp. Dodinga – Sofifi – Akelamo – Payahe – Weda, this road has length of ± 141 km. Respondents in the study are people who are directly involved in the implementation of this work. A statistical approach was carried out in this study, where the independent variables used included: Finance (X1), Human Resources (X2), Materials (X3), Equipment (X4), Work Implementation Methods (X5), Design Changes (X6), and Work Environment (X7), while for the dependent variable is Time (Y1). The results of this study indicate that the dominant factors influencing the timely completion of road preservation work at the study location are Finance (X1), Human Resources (X2), Materials (X3), and Equipment (X4) with a percentage value of 43.89%.
EFEK PENGGUNAAN PASIR BATU APUNG SEBAGAI PENGGANTI SEBAGIAN AGREGAT HALUS PADA CAMPURAN BETON RINGAN Abdul Gaus; Mufti Amir Sultan; Raudha Hakim
PADURAKSA: Jurnal Teknik Sipil Universitas Warmadewa Vol. 12 No. 1 (2023)
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Perencanaan, Universitas Warmadewa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/pd.12.1.5269.8-13

Abstract

Lightweight concrete is obtained using pumice sand as a substitute for fine aggregate. The expected advantage of lightweight concrete is to reduce the self-weight of the concrete, which is a dead load on the structure. This study aims to determine the effect of using pumice sand on concrete volume weight, compressive and tensile strength. Research methods with testing in the laboratory. The test object used is cylindrical with a height of 30 cm and a diameter of 15 cm, according to SNI-03-1974. The coarse aggregate of pumice and the fine aggregate of pumice sand were sourced from the Dowora quarry on Tidore Island. Fine aggregate in control specimens using normal sand from the Kalumata quarry on Ternate Island. Using pumice sand as fine aggregate with a ratio of 75% normal sand, 20% pumice sand, 50% normal sand and 50% pumice sand, 25% normal sand and 75% pumice sand, and 100% pumice sand. Control test object using 100% normal sand. Each variation of the test object is ten pieces, so that the total test object is 50. The results of this study indicate that the volume weight decreased along with the addition of pumice sand weight into the concrete mixture. Therefore, If the volume of concrete produced is < 1900 kg/m3, the concrete is classified as lightweight. The resulting compressive strength of 56.63 kg/cm2 decreased to 81.10% of the control test object. The split tensile strength of concrete is 1.13 kg/cm2, or a decrease of 52.05% of the control test object. Based on the compressive and tensile strength, concrete is categorized as lightweight structural concrete as an insulator.
Pengaruh Penggunaan Limbah Polyethylene Terephthalate Terhadap Campuran Aspal Concrete Binder Course Abdul Gaus; Raudha Hakim; Seniyasmin Seniyasmin
Teras Jurnal : Jurnal Teknik Sipil Vol. 12 No. 1 (2022): Volume 12 Nomor 1, Maret 2022
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v12i1.683

Abstract

Abstrak Penggunaan plastik sebagai kemasan makanan dan minuman hingga saat ini belum tergantikan, dampaknya keberadaan limbah plastik semakin meningkat. Unsur penyusun utama plastik adalah karbon dan hydrogen hal ini identik dengan unsur penyusun utama dari aspal. Indonesia merupakan salah satu negara pengimpor aspal, 50% kebutuhan aspal dalam negeri dipenuhi dengan mengimpor dari luar negeri. Salah satu solusi yang dapat dilakukan untuk mengurangi limbah plastik dan mengurangi impor aspal adalah penggunaan limbah plastik sebagai campuran aspal beton untuk mengurangi penggunaan aspal. Penelitian ini bertujuan untuk menganalisis pengaruh penggunaan limbah plastik jenis PET pada campuran aspal AC-BC. Limbah PET dibuat dalam bentuk serat yang ditambahkan dalam campuran aspal dengan komposisi 0.3% dan 0.6% yang dibanding dengan campuran aspal tanpa PET. Penambahan serat PET dalam campuran aspal menunjukkan bahwa stabilitas aspala semakin meningkat dengan bertambahnya persentase serat PET dalam campuran aspal, nilai flow menjadi lebih kecil hal ini mengindikasikan bahwa campuran aspal cenderung lebih kaku, nilai MQ juga menjadi lebih besar. Kata kunci: Aspal, plastik, limbah, marshall, PET   Abstract he use of plastic as food and beverage packaging has not been replaced until now, the impact of the existence of plastic waste is increasing. The main constituent elements of plastic are carbon and hydrogen, which are identical to the main constituent elements of asphalt. Indonesia is one of the asphalt importing countries, 50% of domestic asphalt needs are met by importing from other countries. One solution that can be done to reduce plastic waste and reduce asphalt imports is the use of plastic waste as a mixture of asphalt-concrete to reduce the use of asphalt. This study aims to analyze the effect of the use of PET type plastic waste on the AC-BC asphalt mixture. PET waste is made in the form of fiber which is added to the asphalt mixture with a composition of 0.3% and 0.6% compared to the asphalt mixture without PET. The addition of PET fibers in the asphalt mixture indicates that the asphalt stability increases with the increase in the percentage of PET fibers in the asphalt mixture, the flow value becomes smaller, this indicates that the asphalt mixture tends to be stiffer, the MQ value also becomes larger. Keywords: Asphalt, plastic, waste, marshall, PET
Tinjauan Kuat Lentur Balok Beton Ringan Dengan Penambahan Serat Kawat Mufti Amir Sultan; Raudha Hakim; Badordin Muchtar; Julham Adingku
Teras Jurnal : Jurnal Teknik Sipil Vol. 12 No. 2 (2022): Volume 12 Nomor 2, September 2022
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v12i2.783

Abstract

Abstrak Beton ringan merupakan pilihan yang baik bagi daerah rawan gempa. Batu apung dan pasir batu apung dapat digunakan sebagai agregat beton ringan. Penggunaan agregat ini dapat mereduksi berat beton namun juga mengakibatkan penurunan kuat tekan dan kuat lenturnya. Untuk memperbaiki penurunan kuat tekan dan kuat lentur perlu dilakukan inovasi, seperti dengan penambahan serat ke dalam campuran beton. Dalam penelitian ini digunakan benda uji berbentuk balok dengan dimensi 15x15x60 cm. Serat kawat bendrat ditambahkan ke dalam campuran beton ringan dengan komposisi sebesar 7,5% terhadap berat benda uji. Pengujian lentur dengan pembebanan twopoint load, balok dibebani sampai mencapai kegagalan. Hasil pengujian menunjukan bahwa, kuat lentur pada balok beton ringan dengan penambahan serat kawat bendrat (BR-S) dapat meningkatkan kuat lentur sebesar 18,12% terhadap beton ringan tanpa serat kawat bendrat (BR). Koefisien hubungan kuat lentur dan kuat tekan (K) adalah 0,70 sesuai dengan SNI 2843. Kata Kunci:  Beton Ringan, Kuat Lentur, Batu Apung, Pasir Batu Apung  Abstract Lightweight concrete is a good choice for earthquake prone areas. Pumice stone and pumice sand can be used as lightweight concrete aggregates. The use of this aggregate can reduce the weight of concrete but also result in a decrease in its compressive strength and flexural strength. To improve the decrease in compressive strength and flexural strength, innovations need to be made, such as by adding fiber to the concrete mix. In this study used a beam-shaped test object with dimensions of 15x15x60 cm. Bendrat wire fibers are added to the lightweight concrete mixture with a composition of 7.5% of the weight of the test object. Flexural testing with a two point load, the beam is loaded until it reaches failure. The test results show that the flexural strength of lightweight concrete beams with the addition of bendrat wire fibers (BR-S) can increase the bending strength by 18.12% against lightweight concrete without bendrat wire fibers (BR). The coefficient of the relationship between flexural strength and compressive strength (K) is 0.70 according to SNI 2843. Keywords: Lightweight Concrete, Flexural Strength, Pumice Stone, Pumice Sand