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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 168 Documents
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EVALUASI RANCANGAN MUTU BETON PADA PEMBANGUNAN GEDUNG DI KALIMANTAN BARAT Andre Renaldi Prameswara; Dony Dony; Rasiwan Rasiwan; Etty Rabihati
Construction and Material Journal Vol. 4 No. 3 (2022): Construction and Material Journal Vol. 4 No. 3 November 2022
Publisher : Politeknik Negeri Jakarta

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Abstract

Concrete is a significant substance that is frequently employed in infrastructure construction. When manufacturing concrete, a concrete mix, or Design Mix Formula (DMF), must be created to specify the proportions of the materials to achieve the desired concrete quality. Concrete quality is classified based on the compressive strength of the concrete, which value has a significant impact on the DMF produced. One of the factors that can affect the quality of concrete is the fact that the dosage used in making concrete in the field is not in accordance with the existing DMF. This means the quality of the concrete in the field is not in accordance with what was planned, namely the quality of K-300 concretes. This study's objectives are to assess the current DMF and examine the variables influencing concrete quality in the field. To conduct the research, the Pontianak State Polytechnic's Civil Engineering Concrete Laboratory tested aggregates, created DMF, created cube specimens, and tested cube concrete compression tests. As a result, it can be said that one DMF can be used for all these structures because the laboratory results demonstrate that the DMF utilized in the field is consistent with the intended concrete quality, namely K-300 concrete quality. At the age of 28 days, concrete with a slump value of 9 cm had an average compressive strength of 339.882 kg/cm2, or 28.21 MPa. According to the findings of these investigations, the field-related factors cause the quality of the concrete to differ from the planned concrete's quality. Keywords: Concrete, DMF, Quality of Concrete, Testing, Compressive Strength.
ANALISIS KEKUATAN PENGARUH MODEL BRACING TERHADAP PONDASI KATROL LADDER PADA KAPAL ISAP PRODUKSI (KIP) Hariyono Yono; Azhar Aras Mubarak
Construction and Material Journal Vol. 4 No. 3 (2022): Construction and Material Journal Vol. 4 No. 3 November 2022
Publisher : Politeknik Negeri Jakarta

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Abstract

With the use of the bracing model that was built during the building of the ladder-pulley foundation, this research intends to analyze the strength of the ladder-pulley foundation on the Kapal Isap Produksi (KIP). Finite element analysis (FEA) and modeling with the Ansys software were used in the investigation. The 58 m length of the actual ladder is considered when creating the model. Then, create each model of a diagonal brace and an x-bracing specifically for the pulley foundation. After that, a special diagonal brace and an x-bracing model were developed, respectively, for the pulley foundation's building. The load acting on the ladder for the two versions is the same: 1.42 x 105 N for the pipe and mud, 0.57 x 105 N for the cutter, and 0.67 x 108 Nmm for the cutter torque. According to the analysis's findings, the diagonal brace model's strut component experiences the highest level of stress, measuring 57.32 N/mm2, whereas the x-bracing model's greatest stress value is 25.44 N/mm2. These findings suggest that, to reduce structural failure in the ladder pulley area, it is preferable to use x-bracing construction for the brace design put there. This is because it has a lower minimum stress value than the diagonal brace model. Keywords: Bracing, Ladder, KIP, FEA.
PERBANDINGAN ESTIMASI BIAYA STRUKTUR BANGUNAN ANTARA SOFTWARE AUTODESK REVIT DENGAN CUBICOST Ayu Herzanita; Refina Putri Anggraini
Construction and Material Journal Vol. 5 No. 1 (2023): Construction and Material Journal Vol. 5 No. 1 Maret 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i1.4620

Abstract

Building Information Modeling (BIM) software commonly used in Indonesia to calculate cost estimates includes Autodesk Revit and Cubicost. Previous studies have shown significant differences comparing the estimated cost of structural work in Autodesk Revit with conventional methods. Further study is needed to compare Autodesk Revit with Cubicost in the same project, with the purpose of knowing the difference in the estimated cost of structural work. The object of this study was the Urban Homes Residential Apartment construction project by reviewing the upper structure. The chosen research strategy was in accordance with the case study objectives. The process begins with the preparating of the WBS (Work Breakdown Structure), designing the BIM 3D, calculating the estimated structural work cost resulting from quantity takeoff using work unit price analysis, and analyzing the estimated cost comparison between Cubicost and Revit BIM software. Based on the analysis results, the estimated cost of building structures using Cubicost is Rp 80,485,995,692, - and has differences of ±13.1% compared to using Revit.
ANALISIS FAKTOR PENYEBAB KETERLAMBATAN PENYELESAIAN PADA PROYEK PEMBANGUNAN APARTEMEN URBAN SIGNATURE CIRACAS Rizky Tasya Putri; Setia Damayanti; Akhmad Dofir
Construction and Material Journal Vol. 5 No. 1 (2023): Construction and Material Journal Vol. 5 No. 1 Maret 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i1.4703

Abstract

The delay in completion of construction that has exceeded the work time target according to the initial agreement is very powerful on the construction project itself. Delays in the project occur due to problems that arise in terms of materials, labor, costs, equipment, environment, and others. In this research, an analysis was carried out on what factors were the cause of the delay in the completion of the superstructure and the rating of the value of the reliability function of each work. The Fault Tree Analysis (FTA) approach would be employed, which is a method that makes use of fault tree analysis in the form of a graphic model based on the outcomes of conducted interviews. In the graphic model, there were several event symbols and logic gate symbols to connect the event symbols. On the graphic model, the simplest cut set was acquired using Boolean algebra and the Method of Obtain Cut Set (MOCUS). Based on the results of the analysis, there were 33 basic events or jobs that experienced delays, including changes in rebar supply by the Owner, limited human resources, a lot of repair work, evaluation of the project schedule, SILO SIO PH licensing, late payments, delays in material delivery, and others. Typical structural work and ladder structures, the Boolean algebra law can be applied because it has a repeating code. Meanwhile, on the roof of the engine room, the law of algebra cannot be applied since the work does not have a repeating code. The reliability function is calculated in the analysis that follows. When all three variables are accurate, the system operates as intended.
EVALUASI KAPASITAS STRUKTUR EKSISTING LANTAI JEMBATAN PADA JEMBATAN TYPE PILE SLAB DI RUAS JALAN TOL JORR W1 KEBON JERUK Fianda Harsa; Andi Indianto; Erlina Yanuarini
Construction and Material Journal Vol. 5 No. 1 (2023): Construction and Material Journal Vol. 5 No. 1 Maret 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i1.4748

Abstract

This research a study transverse cracking that occurred on the floor structure of the pile slab type bridge located at JORR W1 Kebon Jeruk toll road. The purpose of this study was to evaluate the capacity of the bridge floor structure that had damaged by cracks and weather its remains are in a safe condition or not. The research method is carried out by analyzing the calculation of loading that occurred in an actual condition that had cracked by modeling on structural analysis program with standard SNI 1725:2016 and actual loads that acted on the structure, then evaluating the moment capacity of the structure based on installed reinforcement and evaluating deflection from inspection results based permissible deflection. From the results of the analysis, it was found that the structure experienced a moment failure due to the actual load with a load magnitude of 18,07 tons, the moment due to the actual load on the negative moment region was 34,47 tons.m and the positive moment region was 37,46 tons.m, compared to the moment capacity of structure successively which was 25,52 tons.m and 29,16 tons.m. However, for the results of the analysis of the standard load of 11,25 tons, the moment capacity of the structure was able to withstand the ultimate moment due to the reactor load successively being 22,82 tons.m and 24,37 tons.m, whereas for the deflection test results of 0,46 mm remained in a safe condition without exceeding the L/800 permit deflection of 4,76 mm. Based on the results of the analysis, it can be concluded that the structure is overloaded and in the future, the structural ability must be improved and it is necessary to strengthen the bridge floor structure to be able to increase the capacity of the structure so that it can withstand the working load.
PENGARUH ALKALI SILIKA REAKTIF PASIR TERHADAP KUAT TEKAN MORTAR RENDAMAN Mudiono Kasmuri; Ajeng Ayuningtias
Construction and Material Journal Vol. 5 No. 1 (2023): Construction and Material Journal Vol. 5 No. 1 Maret 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i1.4773

Abstract

Mortar is a building material made of cement, fine aggregate, and water. To get a good mortar strength, the properties, and characteristics of each of the mortar constituents must also be studied further. Aggregates containing silica can be reactive or non-reactive to alkaline elements in cement. The purpose of this study was to determine the effect of alkaline silica reactive sand on the compressive strength and flexural strength of mortar immersed in seawater. This research uses an experimental method, namely Rangkas sand, Bangka sand and Lumajang sand which have gone through the XRF (X-Ray Fluorescence) testing process to determine the percentage of compound content contained. The research method to determine the reactivity of the sand refers to ASTM C 1260. The compressive strength and flexural strength of the mortar were tested with two variations of immersion, namely by using fresh water and sea water. The immersion of the mortar was carried out for 7, 14, 28 and 56 days. From the results of testing the compressive strength and flexural strength of mortar at the age of 28 days had the same results for fresh water and seawater immersion, namely sand with high potential for reactive alkali silica has low compressive strength and flexural strength values ​​for all types of immersion. The freshwater immersion method has been used to test the mortar's flexural and compressive strength. It has a higher compressive and flexural strength value than the seawater immersion mortar, with a percentage ratio of 27.1% of compressive strength and 17.3% of flexural strength in mortar, with an immerse age of 28 days.
ANALISIS KUAT LENTUR DAN KUAT TEKAN PADA LIMBAH BOTOL PLASTIK BAHAN PEMBENTUK GRC Suripto; Tri Wulan Sari; Denny Yatmadi
Construction and Material Journal Vol. 5 No. 1 (2023): Construction and Material Journal Vol. 5 No. 1 Maret 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i1.5297

Abstract

Plastic is one of the items that cannot be separated from our daily lives. GRC (Glassfibre Reinforced Cement) is a building material similar to concrete, made of cement reinforced by fiberglass which has alkali resistant properties. The purpose of this study was to analyze the flexural strength and compressive strength of GRC building materials with plastic bottle substitution. The type of research used experimental. The method carried out by replacing several compositions of fiber, plastic processed from plastic bottle waste and fiber with plastic waste in the GRC-forming mixture to utilize plastic waste to reduce the use of fiber glass. The research method used starts from the study of literature, manufacture of test materials, manufacture of test specimens, testing of flexural strength and compressive strength, then data analysis and discussion are carried out. The results obtained were that the flexural strength of the GRC material specimen with a substitution of 3.5% fiber as measured by the weight of the mortar is the largest flexural strength compared to other material substitutions. With the average flexural strength value obtained is 1.81 MPa or Fs = 18.48 kg/cm2. From the substitution of 1.75% fiber plus 1.75% plastic bottle waste to the GRC-forming material, there was a decrease in the average flexural strength value of 1.44 MPa or about 10.10%, while the act of replacing plastic bottled waste to the GRC-forming material decreased. the average flexural strength value is 3.27 MPa or about 22.93%.
STABILISASI TANAH CAMPURAN VOLCANIC ASH TERHADAP NILAI KUAT GESER PADA TANAH QUARRY MEUNASAH RAYEUK KAWAY XVI ACEH BARAT Reza Mulia; Munirwansyah; Devi Sundary
Construction and Material Journal Vol. 5 No. 1 (2023): Construction and Material Journal Vol. 5 No. 1 Maret 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i1.5528

Abstract

A clay-silty located in the quarry Meunasah Rayeuk, Kaway XVI, West Aceh is a source of stockpile material that is often used as road construction material in West Aceh. Based on the color this land is divided into three, namely red, yellow, and gray soil. These three types of soil have bad properties that make them unfit for use as road base layers. Therefore, it is necessary to stabilize it with a mixture of volcanic ash taken from Wih Pesam, Bener Meriah. The purpose of this study was to determine the effect of mixing soil with volcanic ash on the shear strength of the soil. This research method was carried out in the form of standard compaction tests, and direct shear strength on mixed volcanic ash soils. Variations in the addition of volcanic ash are 12.5%, 15%, 17.5%, and 20% of the dry weight of the soil. The research results show that these types of soil belonged to the A-7-6 of soil classification according to AASHTO identified as containing montmorillonite minerals in gray soil. The addition of volcanic ash to the three types of soil can increase the value of the shear strength of the original conditions at certain variations. The results of shear strength values ​​for volcanic ash mixture variations of 0%, 12.5%, 15%, 17.5% and 20%, were 0,8, 1,0, 0,8, 1,0, and 0,7 in units of kg/cm2 for red soil respectively. In the yellow soil of 1,0, 1,0, 0,9, 1,2, and 0,9 in units of kg/cm2. On gray soil as much as 0,7, 1,1, 1,0, 0,9, and 1,1 in units of kg/cm2.
KAPASITAS SAMBUNGAN BALOK PRECAST SISTEM BOLT AND WET CONNECTION DENGAN OPTIMASI CAMPURAN AGREGAT DAN SIKAGROUT 215 Andreas Rudi; Eka Sasmita
Construction and Material Journal Vol. 5 No. 1 (2023): Construction and Material Journal Vol. 5 No. 1 Maret 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i1.5541

Abstract

The Government of Indonesia has recently made regulation about Rusun/Rusunawa in great quantities with less time for construction. The solution is using straightforward construction for Rusun/Rusunawa. The alternative to these problems is precast construction. The method of loading test is referred to ASTM C78. Having research precast beam with mixing material grouting between nonshrinkage material by Sika 215 product and coarse aggregate with ratio 50%, 40% and 30% of percentage coarse aggregate by Sika Grout 215 weight. The result achieved, (a) deflection of conventional beam K1 2,8 mm achieve at load 7,2 ton (b) deflection of conventional beam K2 2,8 mm achieve at load 8,3 ton (c)deflection of precast beam P1 2,8 mm achieve at load 2,7 ton (d)deflection of precast beam P2 2,8 mm achieve at load 3,4 ton.
PERILAKU TANAH EKSPANSIF YANG DITAMBAHKAN LAPISAN GEOTEXTILE TERHADAP DAYA DUKUNGNYA Sutikno; Endang Kamdari
Construction and Material Journal Vol. 5 No. 1 (2023): Construction and Material Journal Vol. 5 No. 1 Maret 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i1.5562

Abstract

There are many problems regarding expansive soils, including the magnitude of stability (CBR) and swelling due to the compaction process, fluctuating water content. The compaction process is carried out layer by layer (field/laboratory), in accordance with the laboratory compaction process, layers of sand are given, so that the arrangement is alternate (5 layers). Each layer is given a membrane / sheet of geotextile. The conclusions obtained are: The amount of swelling in the compaction test with Modified Compaction in soaked conditions is 12.7%, this illustrates that the expansive soil sample from Lippo Cikarang is in the category of high development potential; The stability of the subgrade soil as part of the road body is given by the CBR value, the stability in the study with 5 layers, the formation is soil + sand + soil + sand + soil, with a geotextile layer (G1) of 14.9%, G2 of 16.85%, and G3 by 10.73%, and G4 formation by 6.53%. The magnitude of stability (CBR) and expansion of the expansive soil from Lippo Cikarang which was compacted according to the Modified Compaction was 5.45% (original soil), while the swelling was 12.7 %; The provision of geotextile membranes for the G3 and G4 formations has a positive effect, namely swelling below the original soil swelling value so that it provides development below the original soil value.

Page 16 of 17 | Total Record : 168

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