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BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil
Published by Universitas Islam 45 Bekasi
ISSN : 23025891     EISSN : 25793187     DOI : https://doi.org/10.33558/bentang
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Transportation
BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil is theoritical and applied Civil Engineering journal for scientific publication issued twice in every volume (January and July). First published in January 2013, already indexed by Dimensions, Google Scholar, Base, Garuda, and Sinta. BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil is the journal open access. BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil p-ISSN: 2302-5891, e-ISSN: 2579-3187 is a peer-reviewed, scientific journal published by Universitas Islam 45 Bekasi. FOCUS & SCOPE: Structural Engineering Construction Engineering & Management Geotechnical Engineering Transportation Engineering Water Resources Engineering
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 8 Documents
 1 
Search results for , issue "Vol 9 No 2 (2021): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2021)" : 8 Documents clear
Analisis Kuat Beton Geopolimer Menggunakan Fly Ash dan Abu Sekam Padi Ika Sulianti; Indrayani -; Agus Subrianto; Efrilia Rahmadona; Oktri Yanti; Arista Widya Iryani
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 9 No 2 (2021): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2021)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v9i2.2859

Abstract

One of concrete construction development is the use of geopolymer concrete which is environmentally friendly and efficient in regard to energy utilization. In this study, four combinations of fly ash (FA) and rice husk ash (RHA) was used, namely: i) 100% FA and 0% RHA, ii) 75% FA and 25% RHA, iii) 50% FA and 50% RHA, and iv) 25% FA and 75% RHA, with addition of alkaline solution mix of Na2SiO3 and NaOH with a ratio of 5:1 at 7 days, 14 days, and 28 days of concrete age, with cube samples and will be done a compressive strength test of 225 kg/cm2 (28 days of concrete age). This study aims to determine the optimum variation and analyze the compressive strength of geopolymer concrete using FA and RHA with the addition of an alkaline solution of Na2SiO3: NaOH = 5: 1. Results found that the optimum variation was in the geopolymer concrete mix of 100% FA and 0% RHA with a compressive strength value of 395.643 kg/cm2 (28 days of concrete age), whereas other variations have shown a decrease of compressive strength compare to the normal concrete. Therefore, the geopolymer concrete variation of 100% FA and 0% RHA has a higher compressive strength because the cement substitute used (100% fly ash) contains the right chemical composition in which it can react with alkaline solutions properly. Meanwhile, rice husk ash contains a composition that is not appropriate to be reacted with alkaline solutions. This shows that fly ash is a suitable substitute for cement for geopolymer concrete. In the other hand, rice husk ash is not suitable for use as a substitute for cement in geopolymer concrete.
Analisis Kausalitas Kecelakan Konstruksi dengan Pendekatan Analogi Fault Tree Analysis (FTA) Adwitya Bhaskara; Cahyo Dita Saputro; Firdamarsha Benadikta; Syawaluddin Alim; Danny Setiawan
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 9 No 2 (2021): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2021)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v9i2.2860

Abstract

In mid-2019, there was a construction accident during the underpass construction project in Yogyakarta. The underpass excavation wall in this project was collapsed and 2 vehicles were reported fallen. Although such accident sometimes occurs in some projects, it does not mean that these accidents are caused by the same source. Many efforts to prevent accidents have been done by various methods and one of them is an assessment by observation at construction sites referring to Government Regulation 05 2014 concerning SMK3 (Occupational Safety and Health Management System) in the Public Works Sector Construction. The details about the implementation of construction work are described in PUPR Decree No. 21 in 2019 in term of the Construction Safety Management System (SMKK) Guidelines. This research was conducted to identify factors and indicators of management consultants, supervisors and contractors who have a major impact and contribution to the underpass construction project in Kentungan, Yogyakarta. The percentage level of accuracy in the application of the construction safety management system based on the assessment of the contractor was 85.938% and for the supervisory consultant the percentage level of accuracy was 97.29%. Both percentages are included in the satisfactory category since the assessment ranges are between 85% and 100%. Based on these two assessments, an evaluation was carried out using a Fault Tree Analysis to determine the causality flow of construction accidents.
Penambahan Serbuk Kayu Kamper terhadap Kuat Tekan Beton Lydia Darmiyanti; Gali Pribadi; Achmad Pahrul Rodji
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 9 No 2 (2021): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2021)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v9i2.2861

Abstract

Sawdust waste from the furniture industry should be considered. Nowadays, the increased demand for furniture is in line with the increase in sawdust waste produced. Therefore, it is necessary to make use of sawdust to protect environment. An alternative use is the addition of sawdust as the concrete mixture. Cellulose and hemicellulose compounds are compounds contained in wood powder, where these compounds can provide additional bonding between particles in the cement and sand mixture in concrete. Therefore, concrete can be stronger as well as more water resistant, hence it can be used for a specific purpose in constructions. This study aims to analyze the compressive strength of concrete due to the addition of sawdust as an organic fiber in the concrete mixture with the percentage of 0.25%, 0.50%, 0.75% and 1% as substitution of sand. Organic fibers as additives in concrete are being developed until recently. The proposed concrete was 25 MPa quality. Result showed the increase in the compressive strength of concrete by 0.98% in 1% wood powder mixed at 28 days of concrete age.
Studi Literatur Potensi Pemanfaatan Terak Nikel (Slag Nikel) sebagai Agregat pada Mortar dan Beton Ratno Wijaya; Sotya Astutiningsih
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 9 No 2 (2021): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2021)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v9i2.2862

Abstract

The increasing of infrastructure development has an impact on increasing demand for construction materials. Generally, construction materials come from nature and still being exploited, which could lead to environmental degradation. Visually, nickel slag resembles gravel and sand which can be used as an alternative material. Therefore, this literature study aims to determine the characteristics and potential utilization of nickel slag gathered from Indonesian lateritic nickel ore and its application as an aggregate in mortar and concrete. The method used in this study is a review of several literatures from a reputable digital publication database with the keywords "terak nikel" and "nickel slag". In addition, several criteria are also used as filters in order to get the more focused literatures. Although the fluctuations in its mechanical properties was reported, it can still be overcome by using slag nickel slag as coarse and fine aggregate simultaneously. The results also show that nickel slag can be used as fine or coarse aggregate in concrete up to 100% content as well and as fine aggregate in asphalt application mortars up to 50% content.
Pemanfaatan Sedimen Sungai Untuk Bahan Baku Unfired Bricks (Bata Tanpa Bakar) Didit Puji Riyanto; Suhardi -; Wahyu Prasetyo; Pranu Arisanto
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 9 No 2 (2021): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2021)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v9i2.2863

Abstract

The land use change in a watershed cause erosion resulting in sedimentation in river channels. Physically treatment of sedimentation requires a considerable cost, hence it is necessary to find another alternative treatment, i.e. by utilizing river sediment for building materials. Brick is a building material that is widely produced and used by the society. To provide solutions for sediment reduction, it is necessary to do a research on the utilization of river sediment for brick raw materials. In this study, the utilization of sediment into bricks was proposed in the form of Unfired Bricks. Raw sediment material will be mixed with cement and sand with a certain composition to increase the compression strength of brick in order to meet one of the SNI requirements, i.e. 15-2094-2000 or SNI 03-0349-1989. Results found that the addition of cement and sand treatment can increase the compressive strength of the brick up to 44,176 kg/cm² at the age of 14 days. However, the compression strength test results are still below the compression strength of Red Brick requirements in accordance with SNI 15-2094-2000 where the minimum compression strength of brick is 50 kg /cm², but it qualify for the compression Strength Concrete Brick SNI 03-0349-1989 for the quality level of grade III with a minimum of 40 kg / cm² and grade IV with a minimum of 25 kg / cm²
Perkuatan Lereng pada Sempadan Sungai Jl. Sultan Agung Kabupaten Jember dengan Dinding Penahan Tanah Kantilever Luqman Hakim; Paksitya Purnama Putra; Dwi Nurtanto
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 9 No 2 (2021): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2021)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v9i2.2864

Abstract

The land collapsed on Jl. Sultan Agung, Jompo, Jember Regency was reported. A team from the Regional Disaster Management Agency (BPBD) found cracks in the ground under a shop since February 2019. This incident resulted in a landslide of a road with approximately 45 meters long and 10 meters wide that it blocked the river flow, and nine shophouses, which are the assets of the Jember Regency government, collapsed as deep as approximately 4 meters. The cantilever type retaining wall is designed in the landslide area as an effort to revitalize the banks of Jompo river on Jalan Sultan Agung. Cantilever wall design stability refers to SNI 8460: 2017 and was assisted by using the GEO 5 program. The stability of cantilever walls against overturning shows a safety factor value of 3.72 that greater than 2 (safe condition), whereas the stability of cantilever walls against sliding was 1.61 that greater than 1.5 (safe condition), and the stability of the bearing capacity was 8.18 that greater than 3 (safe condition). Cantilever wall structure using concrete quality (Fc ') 40 MPa, and reinforcement quality (Fy) 420 Mpa, with a diameter and a distance of 25 mm and 125 mm respectively. Additional reinforcement was given to the Cantilever Wall, i.e. a bore-pile with a diameter of 60 cm which was fixed to a depth of 6 meters.
Analisis Risiko Kegagalan Konstruksi Infrastruktur Permukiman Dedi Suryadi; Hendrik Sulistio; Lia Amelia Megawati
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 9 No 2 (2021): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2021)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v9i2.2865

Abstract

Equitable distribution of settlement infrastructure is one of the current regional government programs. However, the high budget for residential infrastructure every year is not directly proportional to the quality of the infrastructure buildings realization. Good construction project control is available for every work implementation activity, but not all construction actors can apply it correctly. Weak project control resulted in construction failure and not achieving project objectives. This study aims to analyze the most dominant risk of construction failure and respond to construction failure mitigation using the Soft System Methodology. Variables that caused construction failure were the low quality of human resources who occupy the highest rank, the quality of work that is not in accordance with specifications, inappropriate planning, low levels of supervision and a culture of contractors that have not prioritized the quality of construction work; they are factors that cause road construction and residential infrastructure failures in Bekasi Regency. The conceptual model in the form of packaging work that is tailored to the capabilities of Human Resources is one of the recommended model options, hence that work can be completed in accordance with predetermined specifications.
Perbandingan Kepadatan Kering Tanah Lempung Distabilisasi Serbuk Arang Tempurung Kelapa dengan Serbuk Arang Bambu Yayuk Apriyanti; Ovin Sahara; Aisah Fitri; Ferra Fahriani
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 9 No 2 (2021): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2021)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v9i2.2866

Abstract

Clay soil is the basic part of a building construction, but such type of soil has the stability problems, hence it needs to be stabilized to increase its bearing capacity. Some natural materials in Bangka Belitung Province have not been optimally utilized, e.g. coconut shells and bamboo, which can be used as stabilization materials. In this article, we compare the dry density of clay soil mixed with coconut shell charcoal powder to clay soil mixed with bamboo charcoal powder. The percentage of stabilizing material used is 5%, 10% and 15% of the dry soil weight. Soil classification is based on the Unified Soil Classification System (USCS) standard including the low plasticity inorganic clay (CL) group and following the standards of the American Association of State Highway and Transportation Officials Classification (AASHTO) including the A-6 soil group. The compaction test result show that the dry density of the clay soil increases with the addition of stabilization agent using either coconut shell charcoal powder or bamboo charcoal powder. The results were almost the same where the difference was only about 0.001 (gr / cm3) for the stabilizer mixture of 5% and 10% as well as the difference of 0.002% (gr / cm3) for the stabilizer mixture of 15%. The increase in soil dry density indicates that the bearing capacity of clay soil increases with the increase in the percentage of stabilizing material

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