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Eko Walujodjati
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INDONESIA
Jurnal Konstruksi
Published by Institut Teknologi Garut
ISSN : 14123614     EISSN : 23027320     DOI : https://doi.org/10.33364/konstruksi
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Jurnal Kosntruksi yang dapat menampung dan mempublikasikan hasil karya penelitian, karya tulis dan pengabdian masyarakat baik mahasiswa dan dosen-dosen intern maupun dari pihak luar. Jurnal Konstruksi memberikan informasi yang diperoleh dari laboratorium dan workshop penelitian maupun dari lapangan/ studi kasus di dunia nyata dengan cakupan (Scope of Journals) bidang meliputi struktur transportasi/ infrastruktur, air, geoteknik, manajemen konstruksi, dan lingkungan. Melalui jurnal konstruksi diharapkan dapat menampung semua inspirasi bidang teknik sipil sehingga didapatkan pemecahan masalah yang dihadapi dan mampu melahirkan inovasi baru dibidangnya.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 18 Documents
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Search results for , issue "Vol 20 No 2 (2022): Jurnal Konstruksi" : 18 Documents clear
Pengaruh Campuran Baja Ringan Terhadap Kekuatan Beton Rewilla Aryanti; Eko Walujodjati
Jurnal Konstruksi Vol 20 No 2 (2022): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.20-2.1075

Abstract

Concrete has a high compressive strength but has a low tensile strength, therefore it is necessary to have additional materials aimed at increasing the tensile strength. The use of additives in concrete technology has long been developed. Concrete has a tensile strength of 8%–15% of compressive strength. Some effort is required to increase the tensile strength. One of them is the addition of additional materials, namely pieces of mild steel. The purpose of this study was to determine the compressive strength and split tensile strength of concrete after the addition of mild steel variations of 0%, 10%, 15% and 20%. The design concrete quality is 20 MPa and the concrete age is l4 and 28 days. The specimens for compressive strength and splitting tensile strength of concrete are cylinders with a diameter of 15 cm and a height of 30 cm. The research method used was an experiment with a research time of two months. The compressive strength test results have increased and decreased. The biggest increase was in the 15% mixture with a percentage increase of 46.33% and an average compressive strength value of 12.162 N/mm2 at 14 days of concrete age, while the highest average compressive strength was in a mixture of 0% or normal concrete with a strength value compressive strength of 13.859 N/mm2 concrete aged 28 days. The largest average split tensile strength test results were in a 10% mixture with a split tensile strength value of 2,183 MPa and a percentage increase of 24.09%. The optimum addition of mild steel that produces maximum tensile strength is 10%.
Hasil Laboratorium Kelayakan Sumber Mata Air Cikoneng Kabupaten Garut Roby Ramda Nurputra; Adi Susetyaningsih; Eko Walujodjati
Jurnal Konstruksi Vol 20 No 2 (2022): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.20-2.1111

Abstract

The source of Curug Cikoneng spring water is a type of small spring, while the type of water is a type of fractured spring, which emerges from rock fractures. So far, water from the Cikoneng waterfall has not been optimally used as a source of raw water for the people of Pasawahan village because the water has a sour taste. This study aims to determine the quality of water sourced from the Curug Cikoneng spring as a need for residents in Pasawahan Village, Tarogong Kaler District, Garut Regency, West Java Province. The method used is descriptive method with the object of research is 1 spring in the village of Pasawahan Kaki Gunung Guntur. Data collection techniques by means of observation, observation, sampling at several points, namely Jaba Tonggoh, Jaba Lebak and PLP Citiis, sample testing was carried out at the Garut Kesda Laboratory using reference to PERMENKES RI NO.492/MENKES/PER/IV/2010, analyzing samples and interviews. The results showed that for the three sources, sample 1 (Jaba Tonggoh) and sample 3 (PLP Citiis) the water is odorless, has a clear color and the turbidity level is below the maximum limit, while sample 2 (Jaba Lebak) the water is odorless but has a light yellow color and has turbidity level of 32.38 NTU, but for the three samples it has a sour taste. pH at (sample 1) 3.5, (sample 2) 6.6 and (sample 3) 3.6. Fe (Iron) levels in (sample 1) 3.49 mg/l, (sample 2) 0.63 mg/l and (sample 3) 0.61 mg/l. Manganese levels in (sample 1) 0.63 mg/l, (sample 2) 0.48 mg/l and (sample 3) 0.58 mg/l. Sulfate levels (sample 1) 800 mg/l, (sample 2) 520 mg/l and (sample 3) 790 mg/l. The number of coliform bacteria sample 1 (15), sample 2 (38) and sample 3 (≥240). From the results of research that has been done, Curug Cikoneng springs are not suitable for consumption.
Evaluasi Kepadatan Tanah Timbunan dengan Sand Cone Faridz Moch. Ikbal; Athaya Zhafirah
Jurnal Konstruksi Vol 20 No 2 (2022): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.20-2.1136

Abstract

The construction of the new Cipanas Ring Road in Garut Regency aims to facilitate access to Cipanas attractions. One of the most important things in the construction of a new road is the density of the embankment obtained from the soil compaction process using heavy equipment. Soil density must meet the requirements, namely having a density degree value of more than 95%. If it does not meet the requirements, there will be damage to the landfill and in the long term it will damage the pavement structure above the ground. This study aims to determine whether the landfill on the New Cipanas Ring Road, Garut Regency meets the requirements or not. The method used is experimental testing in the field and in the laboratory. Testing the density of soil in the field using a sand cone refers to SNI 03-2828-1992, while testing the density of soil in the laboratory refers to SNI 1742-2008. Analysis of the results of soil density testing in the field and in the laboratory was carried out to obtain the dry unit weight value of the soil. The dry unit weight value of soil as a result of testing in the laboratory is used as a reference to determine the degree of soil density. The results of this study are that all the soil stockpile in Route A meets the requirements for soil density with a degree of density above 95%, while in Route B it does not meet the requirements for soil density. Piles of soil that meet the requirements for soil density can proceed to the next work and for piles of soil that do not meet the requirements, compaction is required.
Penurunan Tanah Berdasarkan Hasil Uji Konsolidasi di Laboratorium Fedriawan; Athaya Zhafirah
Jurnal Konstruksi Vol 20 No 2 (2022): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.20-2.1145

Abstract

Land subsidence is a geotechnical problem that is often found and cannot be avoided. Analysis of land subsidence including the amount of settlement and the length of time of settlement needs to be done to predict what will happen in the field. The impact of land subsidence is the occurrence of differential settlement which can result in damage to the road pavement structure as happened at one point of the Garut – Bungbulang Road Section. Land subsidence that occurs at that location can endanger road users because it is not safe and comfortable to pass. The purpose of this study is to determine the magnitude of the decline that occurred and in what time period the decline will be completed. The method used is soil testing in the field and in the laboratory. The test is to obtain soil parameters used in settlement analysis. Parameters used include compression index (CC), consolidation coefficient (CV), and void ratio (eo). The results obtained are land subsidence that occurs by 0.0105 m and will occur within a period of 480 years.
Analisis Curah Hujan dan Debit Banjir Das Cipeles Terhadap Drainase Jalan Tol Cisumdawu Phase III Sulwan Permana; Mohamad Fadilah
Jurnal Konstruksi Vol 20 No 2 (2022): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.20-2.1190

Abstract

Jalan tol Cisumdawu memiliki panjang sebesar 60,455 KM di bagi 6 seksi. Pembangunan Jalan Tol Cisumdawu bertujuan untuk menghubungkan 3 Wilayah yaitu Kota Bandung, Kabupaten Sumedang dan Kabupaten Majalengka. Jalan Tol Cisumdawu Phase III DAS Cipeles ini merupakan wilayah dengan tinggi permukaan tanah yang rendah karena kondisi jalan tol melintasi sungai. Sehingga, pada saat hujan deras dalam selang waktu tertentu memungkingkan adanya genangan air pada kawasan jalan tol Cisumdawu Phase III DAS Cipeles ini.Penelitian ini memiliki tujuan untuk menganalisa kinerja alur jaringan saluran drainase di Jalan Tol Cisumdawu Phase III DAS Cipeles, pengaruh dan kelayakannya khususnya diruas Jalan Tol Cisumdawu Phase III DAS Cipeles.dengan menghitung debit banjir rencana 5 tahun Metode Rasional yang akan dialirkan menuju saluran.Berdasarkan hasil analisa saluran drainase pada Jalan Tol Cisumdawu Phase III DAS Cipeles ini dengan data curah hujan pos hujan terdekat 10 tahun terakhir, menggunaka perhitungan curah hujan rata-rata Poligon Thiessen dengan luas DAS 65 km2. Mendapatkan hasil perhitungan curah hujan rata-rata 250 mm, ada beberapa hal yang perlu dianalisis pertama adalah curah hujan rencana, dalam pemilihan metode distribusi curah hujan rencana yang akan digunakan. Diuji menggunakan metode Uji Chi-Kuadrat dan data yang digunakan adalah data curah hujan 10 tahun terakhir, lalu setelah diuji didapat hasil bahwa perhitungan curah hujan rencana untuk data dalam penelitian ini dapat dianalisis dengan metode distribusi Log Pearson Tipe III yang didapat hasil sebesar 325,704 mm dengan periode ulang 5 tahun yang dalam penelitian ini menggunakan metode rasional.Setelah semuanya dilakukan analisis didapat hasil yang menyimpulkan bahwa semua saluran drainase mampu menampung debit dari hasil hidrologi rencana. Debit rencana maksimum saluran terbesar yang dilimpaskan ke sungai sebesar 1,016 m3/detik yang dilimpaskan oleh semua saluran sisi barat.
Analisis Penerapan Jalan Satu Arah di Ruas Jalan Raya Leles-Jalan Lingkar Leles Anggie Rahman Hakim; Ida Farida
Jurnal Konstruksi Vol 20 No 2 (2022): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.20-2.1201

Abstract

This study aims to determine the causes of congestion that often occurs on Jalan Raya Leles during rush hours and determine the impact of implementing one-way roads on performance on Jalan Raya Leles during rush hours. This analysis was carried out by analyzing the existing road conditions as well as the one-way road conditions using the PTV software. Vissim. The cause of congestion on Jalan Raya Leles on existing road conditions is due to an increase in vehicle volume, namely 433 vehicles/minute or 3,468 vehicles/hour which causes a decrease in speed, namely 15.11 km/minute and an increase in density, namely 28.68 vehicles/minute. The implementation of one-way roads on the Leles Highway and Leles Ring Road sections in both scenarios results in an increase in vehicle speed and a decrease in vehicle density on the existing road. In scenario 1, the average vehicle speed is 45.70 veh/min and the vehicle density is 9.69 veh/km and the vehicle volume is 441 veh/min with an average confidence level of the modeling results using PTV software. Vissim that is 98%. In scenario 2 the average vehicle speed is 44.55 veh/min and the vehicle density is 6.70 veh/km and the vehicle volume is 450 veh/min with an average confidence level of modeling results using PTV software. Vissim that is 96%. So the implementation of one-way roads on the Leles Highway and Leles Ring Road sections can reduce congestion during rush hours. It is necessary to arrange more effective vehicle flow patterns so that they do not have a significant impact on increasing vehicle traffic on Jalan Raya Leles. Implementing a one-way road by diverting traffic flow during rush hours from Bandung to the Leles Ring Road section with a composition of motorbikes, private cars, freight transport while public transport vehicles and buses continue to pass Jalan Raya Leles. Meanwhile, from the direction of Garut on Jalan Raya Leles with a composition of motorbikes, private cars, goods transport, public transport and buses still passing through Jalan Raya Leles.
Analisis dan Kalibrasi Aliran di DAS Ciwulan-Sukaraja diterapkan pada Daerah Aliran Sungai Cimawate Kabupaten Tasikmalaya Sulwan Permana; Imam Muhammad Nawawi
Jurnal Konstruksi Vol 20 No 2 (2022): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.20-2.1207

Abstract

Sungai Cimawate adalah sub DAS dari sungai Ciwulan yang berhulu di Gunung Cikurai dan bermuara di Laut Jawa. Pengolahan sumber daya air salah satunya perlu mengetahui besaran debit pada suatu DAS sehingga diperlukan pendekatan baik scara fisik atau matematik. Dikarenakan data debit pada umumnya tidak berkesinambungan diperlukan model hidrologi sebagai acuan atau pengolahan data hujan menjadi data debit dan lokasi penelitian yaitu pada daerah aliran sungai Ciwulan-Sukaraja.Dalam penelitian ini menggunakan data curah hujan dengan kurun waktu 10 tahun. Penelitian ini dengan cara mengkalibrasi parameter Metode FJ Mock dan Metode Nreca untuk memperoleh dabit aliran serta menggunakan Metode Root Mean Square Error (RMSE), Mean Error (ME) dan Koefisien Determinasi (R2) untuk ketepatan hasil kalibrasi dan validasi.Dari hasil penelitian menghasilkan debit rata-rata bulanan, debit terbesar metode FJ Mock yaitu 38,4 lt/detik sedangkan hasil dari Metode NRECA sebesar 38,8 lt/detik. Nilai rata-rata hasil validasi didapatkan tingkat keakuratan pada Metode FJ Mock cukup akurat dibandingkan Metode NRECA.
Pengaruh Substitusi Sebagian Agregat Halus dengan Abu Limbah Kulit Sapi Terhadap Kuat Tekan Beton Henda Riyana; Eko Walujodjati
Jurnal Konstruksi Vol 20 No 2 (2022): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.20-2.1210

Abstract

As an alternative to fine aggregate in the concrete mix, cowhide ash was used in this study. The percentage of fine aggregate substitute material used is 10%, 20%, and 30% by weight of fine aggregate. The purpose of this study is to determine the value of the compressive strength of concrete obtained from the results of testing the compressive strength of concrete. The research method used is experimental (experiment) carried out in the laboratory of the Garut Institute of Technology. The sample used is a cylindrical shape with a size of 10x20 cm for concrete samples with the addition of cowhide ash and 15x30 cm for normal concrete samples with a compressive strength plan of 20 MPa. Materials to be used as concrete mixtures are tested beforehand, including sieve analysis, specific gravity, water absorption, water content, silt content, organic content, and wear tests. After the mixing process is complete and the concrete dries at the age of 2 days, the concrete samples are soaked in water for 28 days. The test carried out was the compressive strength test at the age of 28 days of concrete. The average value obtained from each variation of the concrete mix is ​​that normal concrete has a compressive strength of 17.78 MPa, B1 has a compressive strength of 13.85 MPa, B2 has a compressive strength of 11.19 MPa, and B3 has a compressive strength of 10. 74 MPa.
Eksperimen Pelat Beton Bertulang Bambu Ampel Rima Siti Rohimah; Eko Walujodjati
Jurnal Konstruksi Vol 20 No 2 (2022): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.20-2.1211

Abstract

Indonesia's need for roads and access to buildings is increasing, but this is not matched by balanced economic growth. Therefore, a low cost alternative is sought to make the structure strong and light. As an alternative to steel reinforced concrete slabs, non-structural components, etc., ampel bamboo reinforced concrete slabs are an effective combination. The ampel bamboo to be used is bamboo with an age of more than one year, then this bamboo will be shaped to resemble plain iron reinforcement with a diameter of 8 mm. Then the test was carried out with a treatment age of 28 days. This study aims to determine the effect of haur bamboo on the feasibility of concrete in terms of one-way flexural strength and tensile strength of ampel bamboo itself. This research was conducted using the experimental method and three specimens were made for one-way flexural strength testing with the dimensions of the specimens (10x20x60) cm. From the results of the study it can be concluded that the average tensile strength of ampel bamboo is 396.10 MPa and meets the standard of plain iron reinforcement, namely a minimum tensile strength of 350 MPa and the flexural strength capacity of concrete slabs obtained by replacing iron reinforcement using ampel bamboo is 1, 16 KNm.
Pengujian Kuat Lentur dan Geser Balok Beton dengan Bundel Tulangan Rinrin Siti Ratna Purinur; Eko Walujodjati
Jurnal Konstruksi Vol 20 No 2 (2022): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.20-2.1212

Abstract

The beam is part of a shear system, generally a horizontal component in the moment frame, responsible for bending and shear forces with or without axial or torsional forces. In construction, problems are often encountered in obtaining structural elements with a small cross-section but having great strength, as well as small reinforcement spacing because of the large area of ​​reinforcement required. The purpose of this study is to obtain a solution for structural elements, especially beams, so that they have great strength with unreachable reinforcement spacing requirements, by knowing the ratio of shear and flexural strength in bundled 4Φ6 reinforced concrete beams and single reinforced concrete beams using the proportion of the cross-sectional area of ​​the reinforcement. the same one. The results of the average compressive strength test of cylindrical concrete for 28 days are f'c 12.68 MPa. The beam with bundle reinforcement (TP 4Φ6) has a cross-sectional area of ​​105.83 mm2 while the beam area with single reinforcement (TP Φ12) has a cross-sectional area of ​​106.80 mm2 so that the cross-sectional area of ​​the reinforcement bundle has a difference of 0.97 mm2 or 0.92 % with single reinforcement. The average flexural strength of TP 4Φ6 beam beam = 9.11 KNm, and Φ12 single beam beam = 7.61 KNm. The average shear strength value of TP bundle reinforcement beams is 4Φ6 = 58.88 KN, and that of single reinforcement beams is Φ12 = 57.94 KN. Beams with bundles of reinforcement produce a difference in flexural strength of 19.71% and a difference in shear strength of 1.62%, so beams with bundles of 4Φ6 reinforcement are stronger than beams with single reinforcement of Φ12.

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