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Construction and Material Journal
Published by Politeknik Negeri Jakarta
ISSN : -     EISSN : 26559625     DOI : https://doi.org/10.32722/cmj
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Jurnal Construction And Material adalah jurnal Teknik Sipil yang mencakup bidang keahlian Dasar Teknik, Struktur, Material, Manajemen Konstruksi, Tata Laksana, Transportasi, Sumber Daya Air dan Lingkungan, Geoteknik, Pengukuran dan Jalan Raya. Jurnal ini diperuntukkan bagi mahasiswa, pengajar, dan masyarakat luas yang ingin mempublikasikan karya ilmiahnya dan belum pernah dipublikasikan dimanapun. Jurnal ini terbit secara berkala, tiga kali dalam setahun (Maret, Juli, dan November). - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Construction And Material Journal is one of journals in the discipline of Civil Engineering from vocational school, covering basic of Civil Engineering; Structure, Material Technology, Construction Methods, Construction Management, Water Resources and Environmental Engineering, Geotechnical Engineering, Surveying and Highway Engineering. This journal is intended for engineering student, lecturer, professional and engineering assosiation member in civil works, and other community in Civil Engineering. The journal offers the Authors to publish their paper works in the Civil Engineering from their research result, work experience, etc and never published it in elsewhere. The journal issues would be published in three times a year (March, July and November). - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 8 Documents
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Search results for , issue "Vol. 5 No. 2 (2023): Construction and Material Journal Vol. 5 No. 2 Juli 2023" : 8 Documents clear
ANALISIS RISIKO PENYEBAB KETERLAMBATAN PROYEK PENGEMBANGAN PEMBANGUNAN GEDUNG MARGONO SURADJI YOGYAKARTA BERBASIS PMBOK Novika Candra Fertilia; Sediyanto Sediyanto; Ahmad Fuadi
Construction and Material Journal Vol. 5 No. 2 (2023): Construction and Material Journal Vol. 5 No. 2 Juli 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i2.4648

Abstract

The expansion of industry and the growth of development facilities in Indonesia is very rapid, especially the construction of buildings. Then the level of difficulty to manage and run a building project is getting higher. The higher level of difficulty, the longer the duration of time required to complete the project. Even though an activity has been planned as well as possible, it still contains uncertainty that it will run fully according to the plan. This happened to the building construction project in Yogyakarta, where the project experienced a delay of 35%. This study aims to find out the causes that have a high influence on the delay in the project. In this study, the influence value category was calculated using the project risk management calculation approach based on the 2017 PMBOK.
PERBANDINGAN PENURUNAN KONSOLIDASI METODE TERZAGHI DENGAN ASAOKA PADA VACUUM PRELOADING Fina Mayumi Boangmanalu; Istiatun Istiatun
Construction and Material Journal Vol. 5 No. 2 (2023): Construction and Material Journal Vol. 5 No. 2 Juli 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i2.4750

Abstract

Around 20 million hectares of Indonesia's total land area, or more than 10%, has soft soil. Soft soils can be problematic in construction projects due to their low bearing capacity, high water content, limited permeability, and high compressibility. Vacuum preloading, a technique to hasten consolidation by employing atmospheric pressure from the vacuum as a surcharge load, is one of the improvements for soft soil. The Terzaghi method is typically used to calculate the prediction of the final settlement and the time to reach the final settlement, however the forecast of settlement by the Terzaghi method produces better results than the actual settlement. To estimate the final settlement that takes place in the field, a method with a reliable level of accuracy is used—the Asaoka method. The main goals of this analysis are to determine the final settlement using the Asaoka method, the time needed to reach the final settlement using the Asaoka method, the degree of consolidation caused by vacuum preloading, and soil parameters that support notable differences between the Terzaghi method and Asaoka method using back analysis. According to both site reviews, the Terzaghi method produced settlement outcomes that were 36% and 79% higher than those obtained using the Asaoka method. The time required to reach 90% consolidation on both site reviews are 252 days and 196 days. The results of the Asaoka method used to calculate the degree of consolidation on both site reviews are 92.33% and 94.47%. The value of compression index (Cc), which was derived by back analysis calculations, is what most strongly supports the significant outcomes between the Terzaghi method and the Asaoka method.
MODIFIKASI SIMPANG BERSINYAL PADA PEMBUKAAN PINTU KELUAR-MASUK JALAN TOL Achmad Ibnu Faishal; Daniya Tiarani; Eva Azhra Latifa
Construction and Material Journal Vol. 5 No. 2 (2023): Construction and Material Journal Vol. 5 No. 2 Juli 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i2.4764

Abstract

This intersection was formed as a result of the opening of toll road access, so careful planning is required to avoid any potential problems. The purpose of this study is to examine the performance of the RE Martadinata Road in Ciputat because of access to the Serpong-Cinere Toll Road, as well as the performance of the signalized intersection formed as a result of the toll access. The research process starts with field data collecting and analysis using the PKJI 2014. The examination of the 2/2TT road section's results reveals that the Ciputat and Pondok Cabe sections had the greatest saturation levels at 1,28 and 1,54, respectively. With the degree of saturation on Ciputat route 0,72 and 0,76 on Pondok Cabe route, the road is enlarging to 4/2T on the Pondok Cabe portion. The analysis of signalized junctions with the initial assumption of three phases complete and without the influence of bus pool traffic produced results with a degree of saturation in the north of 0,98 and a degree of saturation in the south of 1,11. The degree of saturation on the North half was 0,58 after the solution of changing APILL to two phases, setting green time, shifting the bus pool, and not turning right. With the influence of pool bus traffic, a saturation degree of 1,10 was obtained in the south part of 0,97, having completed the solutions for the South part of 0,60. With the influence of pool bus traffic, the Western portion of 0,96 reached a saturation level of 1,37, After completing of the West section of 0,46 solutions. The degree of saturation on the South section rises to 0,94 in the fourth year. To ensure that it still complies with the intersection's qualifying conditions, a review is required.
ANALISIS PERKUATAN STRUKTUR AKIBAT PERUBAHAN FUNGSI RUANG DAN PENAMBAHAN JUMLAH LANTAI PROYEK RUMAH IBADAH YAYASAN BEREA KARAWACI, TANGERANG Muhammad Rifqi; Yanuar Setiawan; Mursid Mursid
Construction and Material Journal Vol. 5 No. 2 (2023): Construction and Material Journal Vol. 5 No. 2 Juli 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i2.4775

Abstract

Aspects of building construction are impacted by population increase, technological advancements, and the growing needs of the community. Existing buildings may be converted to serve new purposes in an effort to meet space needs, particularly in key areas. The Barea Karawaci Foundation house of worship building, located in Tangerang City, has a structure that ranges in height from four to six stories, and its usage has changed from that of a shophouse to a place of worship. This is a choice since it is quicker to execute and more financially lucrative. After adding floors and modifying a room's purpose, the inspection of the existing structure is done using the ETABS program and manually computed against the fulfillment of the regulations' requirements. The same is done for reinforcement with concrete jacketing. By enlarging the beam's size from 200x400 to 400x500, adding 6D19 flexural reinforcement, and adding 10 shear reinforcement at intervals of 90 to 200 mm, the beam is strengthened. Column reinforcement is done by enlarging the column from 200x600 to 400x800, adding 18D13 and 14D13 reinforcement, and adding D10 shear reinforcement at distances ranging from 78 mm to 200 mm.
PENGARUH SERBUK CANGKANG TELUR TERHADAP SIFAT MEKANIS BETON DAUR ULANG Kharismalsyah Maulana Akbar; Resti Nur Arini
Construction and Material Journal Vol. 5 No. 2 (2023): Construction and Material Journal Vol. 5 No. 2 Juli 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i2.5560

Abstract

In Indonesia, normal concrete construction is commonly used in the construction process. Excessive concrete waste is usually uncontrolled. Laboratory concrete testing waste can also accumulate and disturb the ecosystem and reduce the aesthetic value of a place. There have been many studies using recycled aggregate from concrete waste. Meanwhile, eggs are one of the foods frequently consumed by Indonesian. Eggshells are certainly becoming waste. According to data from the Indonesia Statistics (2019), chicken egg production in Indonesia reached 4,688,120 tons. Eggshell contains about 94% calcium carbonate with a weight of 5.5 grams. Meanwhile, calcium carbonate is the main constituent of Portland cement, accounting for 70% of other constituents. Based on the reasons above, this study was conducted to determine the effect of chicken eggshell powder as a partial replacement for cement on the mechanical properties of concrete with recycled coarse aggregate. The variations in the use of chicken eggshells in the concrete samples were 0%, 2.5%, 5%, 7.5%, and 10% of the weight of cement. To determine the mechanical properties of the concrete, compressive and splitting tensile tests were conducted using a cylindrical test specimen with a size of 10 x 20 cm. It is expected that the use of chicken eggshell powder can increase the compressive strength of recycled concrete. Based on the test results, the compressive strength of the concrete composition with 2.5% eggshell powder showed the greatest increase compared to the other compositions. This is supported by the UPV test, which showed the same result. The largest increase in splitting tensile strength was also found in the 2.5% composition. Meanwhile, good homogeneity levels were obtained in the concrete, based on the UPV test results on the test specimens at the age of 28 days.
ANALISIS KEKUATAN HELIDECK SANTOS SANGU PT. McDERMOTT INDONESIA Anwar Anwar; Hariyono Ismail
Construction and Material Journal Vol. 5 No. 2 (2023): Construction and Material Journal Vol. 5 No. 2 Juli 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i2.5625

Abstract

Offshore building structures are buildings commonly used for oil and gas exploitation activities. The distance is quite far from the coastal area, it is necessary to support transportation facilities for the mobility of offshore structures such as ships and helicopters. To support this mobilization activity, a helicopter landing medium is needed, namely the helideck. This study aims to identify the shock loads that occur on the helideck and calculate the strength of the helideck santos sangu PT.McDermott Indonesia. This study used data from PT.McDermott Indonesia on one of the projects located in Block 16, Bangladesh. The helicopter data used in this study was a jet-A1 type helicopter with a maximum weight of 5307 Kg. The results showed that the value of the helicopter dynamic load on a normal landing was 10348.65 Kg with a working stress of 62163.41 N/mm2 and had an interaction ratio (IR) = 0.35, while for an emergency landing the dynamic load was 1724.75 Kg, the working stress was 103606.45 N/mm2, interaction ratio (IR)= 0.59.
OPTIMALISASI SIFAT MEKANIK SERAT ALAM DARI SERBUK KAYU ULIN MELALUI TEKNIK PENGERINGAN SEBAGAI PENGUAT MATERIAL BIOKOMPOSIT ANJUNGAN KAPAL Purwanto Purwanto; Erwin Sutantyo; Heri Kiswanto; Khoirotun Nafillah; Rifki Arya Wiguna; Arif Rakhman Suharso
Construction and Material Journal Vol. 5 No. 2 (2023): Construction and Material Journal Vol. 5 No. 2 Juli 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i2.5699

Abstract

Ironwood (eusideroxylon zwageri) is a type of wood that has great potential for industrial development. Currently, forest exploitation activities and the wood industry produce 30%-60% solid wood waste and have not been utilized optimally. One way to use it is to make composite materials. The purpose of this study was to determine the most optimal drying technique of ironwood powder, to provide information on the morphology, content and functional groups as well as the mechanical strength of the biocomposite with a volume fraction ratio. The ironwood powder samples in this study were characterized using the SEM-EDX, FTIR, and Vickers hardness tests. The results of the SEM test obtained information that the morphology of all samples had similarities, namely the surface was rough and the measured diameter of the sample ranged from 50-100 µm. While the EDX test obtained information that all samples had high carbon and oxygen content. The FTIR test results showed that ironwood powder had a cellulose content as evidenced by the absorption peaks and chemical bonds that were the same as pure cellulose. The results of the mechanical test on the biocomposite showed that sample C had the highest average HV value of 13.3 N/m2, while sample E had an average HV value of 12.26 N/m2 below the HV value of sample E. Meanwhile, sample A obtained the lowest hardness value with an average HV 5.93 N/m2.
EVALUASI JEMBATAN BOKS GIRDER BETON SETELAH MENGALAMI BENTURAN KECELAKAAN KAPAL Muhamad Saad; Heru Purnomo
Construction and Material Journal Vol. 5 No. 2 (2023): Construction and Material Journal Vol. 5 No. 2 Juli 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i2.5709

Abstract

A bridge is a structure that connects two places separated by an obstacle. These obstacles are in the form of rivers, seas, ravines, or gaps between buildings. One of them is the sea, where planning must consider the free height of the bridge to prevent being struck by ship traffic. Preventive efforts, however, were not expected due to the sea level exceeding the planned high conditions, which led to an accident where a ship struck the bridge. This condition causes the bridge to experience transverse deformation due to the impact load conditions on the bridge in the transverse direction. The odd behaviour of the bridge, particularly in the compression and tension sections, required a brief further examination. The incident of the ship crashing into the bridge was taken from the case study of the 6 Barelang Bridge, where the concrete box girder type bridge was affected by LBW APCs. Australian One Ship in 2012. Bridge behaviour was reviewed using non-linear geometric analysis, and the static impact load estimated with the AASHTO Method. The condition of the model is then compared with historical data on bridge damage for structural modelling verification.

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