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INDONESIA
Rekayasa Sipil
Published by Universitas Brawijaya
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Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
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Articles 551 Documents
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ANALISIS PERKUATAN LERENG AKIBAT LONGSOR DI DESA DOMPYONG Endah Nurhidayah; Paksitya Purnama Putra; Indra Nurtjahjaningtyas
Rekayasa Sipil Vol. 16 No. 1 (2022): Rekayasa Sipil Vol.16. No.1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2022.016.01.2

Abstract

An unstable slope is identical to the low value of their factor of safety (FS). Slope with low FS are in critical condition, which can cause landslides. On the other hand, the presence of triggering factor such as rain and human activities will increase the percentage of landslide. It has happened in Dompyong village. The Rocscience Slide Program, used to analyze slope stability in Dompyong village based on the simplified – bishop method. Based on the analysis, the FS value of the initial condition of slope is 0,85. Therefore, the slope is in critical condition because the FS value is less than 1,07. A combination method of retaining wall and micropiles is used to strengthen slope stability. This method can increase the FS value to 1,370. The slope is in a stable condition relatively because the FS value is more than 1,25.
BETON DENGAN SUBSTITUSI SEMEN BERBASIS TERAK NIKEL Nuroji Nuroji; Supriyadi Supriyadi; Han Ay Lie; Sie Alexander Patrick Subagyo
Rekayasa Sipil Vol. 16 No. 1 (2022): Rekayasa Sipil Vol.16. No.1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2022.016.01.4

Abstract

This research studied the effect of nickel-based cement substitution in concrete to analyze its behavior. The percentage of substituted nickel-slag was 10%, 20% and 30% to the cement weight. The mechanical properties studied were the compression f'c and tensile fMR stresses at the ages of 14, 28, 42 and 56 days. The data were analyzed and the visual observation of the fractured plans were addressed to determine the failure modes. The research concluded that the nickel-slag cement reduced both the compressive and tensile strength as a function of the substituted content, the decrease process followed a linear path. It was found that the strength of nickel-slag concrete cannot be defined at 28 days due to a prolonged chemical process.
LANDSLIDES MECHANISM ANALYSIS AT KM 258 PONOROGO AT PACITAN ROAD Miftahul Avidatur Rohmah; Arief Rachmansyah; Harimurti Harimurti
Rekayasa Sipil Vol. 16 No. 1 (2022): Rekayasa Sipil Vol.16. No.1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2022.016.01.9

Abstract

One of the locations where landslides occurred on the Pacitan - Ponorogo route was at KM 258 in December 2017. At that location there are 3 adjacent slope segments, the first segment and the second segment had landslides, to prevent landslide at the third segment investigation was carried out on  the slope. Kinematics analysis method was used using the DIPS program to determine the slope failure type and to obtain the circular failure type. The weighting of RMR rock mass on the slopes studied obtained value of 52 (class III) where the rock type is moderate, and the correlation with the SMR on class III RMR rocks is the recommended slope angle of 55°. After slope stability simulation at angles of 80°, 75°, 70°, 65°, 60° to 55°, the effective angle is 70° with an FS value of 1.6.
PEMETAAN CEPAT GENANGAN BANJIR MENGGUNAKAN TEKNOLOGI REMOTE SENSING Tedy Pranadiarso; Entin Hidayah; Gusfan Halik
Rekayasa Sipil Vol. 16 No. 2 (2022): Rekayasa Sipil Vol.16. No.2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2022.016.02.9

Abstract

The existence of a flood inundation rapid map is needed in flood mitigation. This research is intended to map flood inundation quickly by utilizing satellite image technology. Sentinel 2 Level 1C technology uses before and after the flood. The extraction process uses the methods of NDWI (Normalized Difference Water Index) and MNDWI (Modified Normalized Difference Water Index). The result is treated with a threshold value by dividing the pixel value into flooded and unflooded areas. The performance model shows that the MNDWI method is more accurate than the NDWI method in producing flood inundation maps. Thus, the results of the MNDWI method are practical and able to map flood inundation quickly. 
COMPARISON OF WHAT IF, FAST TRACK, AND CRASH PROGRAM METHODS FOR ACCELERATION OF PROJECT DELAY Ratih Prawirawati; Agus Suharyanto; Alwafi Pujiraharjo
Rekayasa Sipil Vol. 16 No. 2 (2022): Rekayasa Sipil Vol.16. No.2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2022.016.02.5

Abstract

One of the obstacles that often arises in working on a project is project delay. Delays are usually caused by unplanned obstacles  or problems. Delays cause the project implementation duration is not as planned in employment contract. What If, Fast Track, and Crash Program methods can all reduce project delays. The costs incurred by the Fast Track method and the What If method were less than the realization costs, while the Crash program method is greater than the realization costs, but the costs of all these methods are greater than the planning costs.The combination of Fast Track Crash Program methods and the combination of Fast Track What If methodsboth can restore the initial duration of the project.If the methodsare reversed into combinations of the Crash Program Fast Track methods and What If Fast Track methods, the produced results aredifferent, namely unable to restore the initial duration of the project. The costs incurred from these combinations are both less than the realization costs, but still higher than the planning costs.
PERILAKU LENTUR KOMPOSIT BETON DAN ASPAL DENGAN KANDUNGAN BUTON GRANULAR ASPHALT (BGA) Erwin Syaiful Wagola; Muhammad Tharik Kemal; Mentari Rasyid
Rekayasa Sipil Vol. 16 No. 2 (2022): Rekayasa Sipil Vol.16. No.2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2022.016.02.10

Abstract

This study aims to analyze the behavior of asphalt concrete composites with the addition of Granular Asphal Buton in the asphalt layer as a surface layer on the concrete. The method used in this study was an experimental method with three types of test specimens. Type I of subgrade, Type II of subgrade added to concrete slabs and Type III of subgrade plus concrete asphalt coated plates + BGA 8.5% The results showed Type I reached a peak load of 45.48 kN. Type II reaches a peak load of 142.44 kN. And type III The use of AC-WC + BGA 8.5% concrete layers as surface layers is able to withstand monotonic loads reaching 214.747 kN. The effect of the use of concrete and asphalt layers containing BGA on the subgrade increases the strength of the structure and reduces the stress that occurs in the soil.
IDENTIFIKASI RISIKO PADA PROYEK WASTE TO ENERGY MELALUI KERJASAMA PEMERINTAH DENGAN BADAN USAHA DI SUMATERA BARAT Sesmiwati Sesmiwati; Wahyudi Putra Utama; Martalius Peli
Rekayasa Sipil Vol. 16 No. 2 (2022): Rekayasa Sipil Vol.16. No.2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2022.016.02.7

Abstract

Waste to energy (WTE) project is a solution to solve energy crisis and at the same time may resolve the waste problem. Public private partnership (PPP) scheme has been widely used to deliver WTE project. The success of PPP projects heavily relies on the advisability of management and risk sharing.  Risk management needed to conduct in order to understand specific risks, examine risk sharing between government and public sector and analyze risk mitigation for preventing and rectifying the impact. The effective decision on risk needed to improve decision-making process that may occur in the WTE projects. Therefore, this study identify risk probability in PPP WTE projects in West Sumatera. This probability relying on expert judgement were collected via an empirical questionnaire survey. The respondents were invited to rate a total of 21 risk factors that impact the success of PPP WTE projects as gleaned from previous research. The overall result ranked risk probability factors that land acquisition and administration approval risk, public opposition, construction cost overrun, operating cost overrun, and design/construction/commissioning performance risk are the top five risk factors affecting the sustainable development of PPP WTE Projects. A better understanding of the risk may improve project feasibility and attract private sector for investing in WTE projects.
PENGARUH PENAMBAHAN SERBUK SENG (ZNO POWDER) TERHADAP BERAT, KUAT TEKAN DAN KUAT TARIK BELAH BETON Maulana Ibrahim; Eka Juliafad
Rekayasa Sipil Vol 15, No 3 (2021)
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Indonesia is a developing country that has quite advanced industrial prospects, one of which is the zinc industry. Increased zinc production, will also increase zinc waste. Based on the nature of ZnO which readily reacts with other compounds, this compound can be used as a mixture in making concrete so that it can produce quite good structural strength. This study aims to determine how the effect of using zinc powder on weight, compressive strength and split tensile strength of concrete. The variations in the addition of zinc powder consisted of 0.25%, 0.5%, 0.75% and 1% by weight of the cement used. The test object used is a cylinder with a size of 15 cm x 30 cm. Tests for weight, compressive strength and split tensile strength were carried out when the concrete was 28 days old. The results obtained are for the weight of concrete with variations in the addition of zinc powder as much as 0%, 0.25%, 0.75% and 1% respectively of 2294 Kg / m3, 2305 Kg / m3, 2311 Kg / m3, 2305 Kg / m3, 2323 Kg / m3. Meanwhile, the compressive strength is 30.49 MPa, 30.356 MPa, 32.92 MPa, 32.69 MPa and 31.573 MPa. And for the tensile strength of concrete with the same variations, namely 11.306 MPa, 10.597 MPa, 11.976 MPa, 13.07 MPa and 13.426 MPa.
PEMANFAATAN AGREGAT PLASTIK PADA PEMBUATAN BATA BETON Azha Zayda Fasani; Ferina - Rahmasari; Tri - Hastuti; Triastuti - Triastuti
Rekayasa Sipil Vol. 16 No. 2 (2022): Rekayasa Sipil Vol.16. No.2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2022.016.02.2

Abstract

The increased demand for red bricks or concrete bricks has resulted from the increase in house construction. Meanwhile, raw materials for making red bricks are becoming limited. As a result, alternative materials are required in the production of concrete bricks. On the other hand, even more plastic disposed of in landfills and cannot be recycled. As a consequence, the use of plastic waste is assumed to be a solution to the problem of plastic waste including the availability of raw materials for making concrete bricks. This research used artificial aggregate of plastic recycle (LDPE) which derived from cap bottle or plastic bag. The purpose of this research is to know the influence of plastic aggregate utilizing on the brick. The testing were compressive strength, density and permeability as SNI 03-0349-1989 about brick. The bricks in the research used plastic aggregated which the maximum diameter was 4 mm.  The percentages of plastic aggregate are between 5% until 25% as replacement of sand. The results show 50 kg/cm² of the maximum compressive strength, 1667 gr/cm3 for density and 10% for water absorption. Based on SNI 03-0349-1989, the brick in this research was the brick with class III.
ANALISIS POTENSI LIKUIFAKSI DI AREA PLTU PACITAN Mesra Srya Ariefin; As’ad Munawir; Arief Rachmansyah
Rekayasa Sipil Vol. 16 No. 2 (2022): Rekayasa Sipil Vol.16. No.2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2022.016.02.8

Abstract

One of Indonesia's regions, Pacitan, is an earthquake-prone area where one of the consequences of the earthquake is the phenomenon of soil liquefaction. Soil liquefaction is the process of changing or transforming the form from a solid to a liquid form. The purpose of this study was to analyze the potential for liquefaction based on field data at the finite element PLTU Sudimoro Pacitan or FEM method. There are three location plans for the liquefaction potential analysis point, namely C-36, S-58, and TC-32 based on earthquake data. Point C-36 has the possibility of liquefaction. For the point S-58 has conditions that will definitely experience liquefaction. Meanwhile, Point TC-32 has the possibility of liquefaction. The subsidence that occurs due to the earthquake load has a large enough impact on land subsidence, namely at point C-36

Page 39 of 56 | Total Record : 551

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