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INDONESIA
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil
Published by Asosiasi Riset Ilmu Teknik Indonesia
ISSN : 30315069     EISSN : 30314089     DOI : 10.61132
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Electrical & Electronics Engineering Engineering
research journal of the Engineering Science Clump. The fields of study in this journal include the sub-groups of Civil Engineering and Spatial Planning, Industrial Engineering, Electrical and Computer Engineering, Earth and Marine Engineering
Arjuna Subject : Teknik (semua kategori) - Bangunan dan Konstruksi
Articles 196 Documents
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Analisis dan Uji Kekuatan Pukul Komposit Helm Ukuran Dewasa berbasis Ijuk Resin dengan Perendaman Alkali Santoso, Satria Ageng Gigih; Hadi, Syamsul; Firdaus, Prima Rifqi
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 3 No. 4 (2025): Oktober : Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v3i4.1184

Abstract

Indonesia is one of the countries with abundant availability of palm fiber composite, yet its application in advanced material technology remains limited. On the other hand, most motorcycle helmets available in the market are made from ABS plastic, which has limitations in impact energy absorption and may increase the risk of head injuries during accidents. This study aims to develop helmet composites based on palm fiber and epoxy resin by varying the fiber volume fractions (15%, 25%, and 35%) and alkali soaking durations (75, 150, 225, and 300 minutes). The impact strength test results showed that the combination of 35% fiber volume and 225-minute alkali soaking produced the highest specific impact energy (SIP) of 0.142 J/mm². As a comparison, SNI-compliant helmets made from ABS plastic only reached an EPS value of 0.00972 J/mm², indicating that palm fiber-based composite helmets could improve impact energy absorption efficiency by more than 14 times. The results conclude that increasing the fiber volume fraction and optimizing the alkali treatment duration significantly enhances the impact resistance, making ijuk-based composite helmets a promising alternative for safer and more eco-friendly protective gear.
Analisa Peningkatan Kualitas Layanan Pelanggan untuk Mengoptimalkan Kepuasan Pelanggan pada Industri Ratu D’laundry Arlita Yunia Saputri; Syifa Yulianti; Nurlelah Nurlelah; Budiharjo Budiharjo
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 3 No. 4 (2025): Oktober : Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v3i4.1187

Abstract

This study aims to evaluate improvements in customer service quality with the goal of increasing customer satisfaction at Ratu D'Laundry. The approach used is quantitative with a descriptive methodology, where data is collected through a survey that measures five main aspects, namely service quality, process speed, price and promotions, customer service, and overall satisfaction and loyalty levels. The results of this study indicate that most customers are satisfied with the services provided, especially in terms of laundry cleanliness, clothing fragrance, and the friendly attitude of staff in providing services. These results show that these factors play an important role in shaping customers' positive perceptions of service quality. However, this study also found several complaints related to service completion time, which is considered to still need improvement. Overall, this study confirms previous findings that service quality has a significant impact on customer satisfaction. The proposed strategy to improve service completion time is a key step in building trust, meeting consumer expectations, and encouraging long-term customer loyalty.
Analisis Panjang Serat dan Durasi Perendaman NaOH terhadap Kekuatan Tarik Komposit Epoksi Berpenguat Bulu Kambing Prima Rifqi Firdaus; Syamsul Hadi; Satria Ageng Gigih Santoso
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 3 No. 4 (2025): Oktober : Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v3i4.1188

Abstract

The problem with previous studies was the use of polyester resin as a matrix in kacang goat hair fiber composites, whereas in the latest study, epoxy resin was used, which has not been widely used. The aim was to obtain the tensile strength of composites that could be used as an alternative material for fan blades. The research method used was experimental with composite fabrication using the hand lay-up method, varying fiber lengths of 10 mm, 20 mm, and 30 mm, and varying immersion times in a 5% NaOH solution for 25, 50, 75, and 100 minutes. Tensile strength testing was carried out using the ASTM D638 standard with a total of 36 specimens. The test results showed that specimens with a fiber length of 30 mm and a soaking time of 50 minutes produced the highest tensile strength of 28.69 MPa, while the lowest tensile strength of 15.38 MPa was obtained in specimens with a fiber length of 10 mm and a soaking time of 100 minutes. This indicates that the highest tensile strength value is 46.37% greater than the lowest value, so the combination of a fiber length of 30 mm and a soaking time of 50 minutes is determined to be the optimal parameter in this study.
Evaluasi Pemeliharaan Lanskap pada Kawasan Taman Candi Kabupaten Ngawi, Jawa Timur Caesar Tegar Prihanggo; I Made Sukewijaya
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 3 No. 4 (2025): Oktober : Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v3i4.1211

Abstract

The Taman Candi is included in the category of active green open space (GOS). Based on this, it is necessary to carry out good maintenance aimed at maintaining the quality of facilities, both softscape and hardscape in the park. Maintenance in Taman Candi Ngawi Regency refers to the park maintenance standards by Arifin and Arifin (2005). Data processing was carried out using a quantitative method, namely using a work capacity calculation formula, aimed at measuring the suitability of work and worker effectiveness from the maintenance of the Taman Candi Ngawi Regency. The management of the Taman Candi in Ngawi Regency does not have a written maintenance schedule, so maintenance activities are carried out flexibly or according to the conditions in the field, and there are several activities that have not been carried out, the results show that there is still work that is not ideal from the work capacity and exceeds the ideal value in accordance with the standard of maintenance work capacity of Arifin and Arifin (2005). This is due to the lack of knowledge of workers about good and correct maintenance activities, the absence of a written schedule from the manager, and the lack of availability of tools.
Analisis Volume Satuan Sepeda Motor pada Pagi & Sore Hari ke Jl. Dahlia dari Arah Alun-alun Menggunakan Aplikasi SPSS Amri Gunasti; Rafi Ramadhan
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 3 No. 4 (2025): Oktober : Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v3i4.1237

Abstract

This study aims to analyze the difference in the volume of motorcycle traffic in the morning and evening on Jalan Dahlia which leads from the Square. The data was collected through direct observation methods during a specific period during morning and evening rush hours, then analyzed to determine vehicle flow patterns, traffic density levels, and significant differences between the two time periods. In addition, this study also considers supporting factors such as community activities, working hours, and daily travel patterns of road users that affect traffic intensity. The results of the study showed that there was a significant difference in vehicle volume, where the volume of motorcycles in the morning tended to be higher than in the afternoon due to the dominance of trips to work and school. On the other hand, in the afternoon the traffic volume is relatively more spread due to variations in the return time of road users. These findings are expected to be a reference for related parties, especially local governments and transportation agencies, in traffic management planning, transportation operational timing, and efforts to improve the safety and comfort of road users in the area.
Evaluasi Kinerja Alat Gali Muat dan Alat Angkut dengan Metode Match Factor pada Operasi Pengupasan Overburden pada Pit Tengah di PT. Bumi Artlantis Raya Kabupaten Berau Mustafa Wadi; Henny Magdalena; Tommy Trides
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 3 No. 1 (2025): Januari: Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik S
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v3i1.1249

Abstract

Overburden stripping operations in the coal mining industry require optimal performance of loading and hauling equipment to achieve production efficiency. This study aims to evaluate the performance of loading and hauling equipment using the Match Factor method in overburden stripping operations at PT Bumi Artlantis Raya. The results indicate that the equipment combination achieved a Match Factor of 0.85, reflecting moderate compatibility with a potential efficiency improvement of 15%. The actual productivity of Excavator 4002 reached 137.02 bcm/hour (91.35% of the 150 bcm/hour target), while Excavator 4004 exceeded the target with a productivity of 195.73 bcm/hour (130.49% of the target). In contrast, dump truck productivity remained relatively low (Mercedes dump truck: 35.58 bcm/hour; Hino dump truck: 35.40 bcm/hour), primarily due to waiting time during loading and disposal activities. Statistical analysis reveals a strong negative correlation between cycle time and productivity (R² = 0.9929). The optimal cycle time to achieve a Match Factor of 0.80 is 969 seconds, corresponding to an optimal hauling distance of 5.38–6.725 km. Although mechanical availability and physical availability were high (94–100%), the use of availability and effective utilization were relatively low due to an imbalance between loading and hauling equipment. This study concludes that improving equipment coordination, increasing bucket fill factor, enhancing haul road conditions, and implementing preventive maintenance are essential to achieving more optimal operational efficiency in overburden stripping activities.
Analisis Volume Kendaraan Jl. Moch.Sruji – Jl.PB Sudirman. Pagi dan Sore Berdasarkan Data Lalu Lintas Reynanta Raditya Gumilang; M. Rifki Alfaries; Amri Gunasti
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 3 No. 4 (2025): Oktober : Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v3i4.1258

Abstract

This study was conducted with the aim of analyzing the difference invehicle traffic volume in the morning and afternoon on the Moch.Sruji-Jalan PB.Sudirman road section in Jember Regency. The survey was conducted through field observationby directly recording vehicle volume at 15-minute intervalsminutes, covering four categories of vehicles: heavy vehicles, light vehicles, motorcycles, and non-motorized vehicles. The data obtained was analyzedusing a quantitative approach assisted by the SPSS application, including a normality testand a mean difference test to determine the significance of the difference invehicle volume between the two observation times. Descriptively, traffic flowin the morning had a higher volume, especially during peak hoursaround 06.00-08.00 with a total of 450-500 vehicles, whilein the afternoon it was in the range of 250-350 vehicles. In addition, motorcycleswere the most dominant type of vehicle in traffic flow compared toother vehicle categories. The conclusion of this study is that the pattern ofcommunity activity, which is more intense in the morning, makes this perioda peak hour with the potential to cause congestion. The results of this studyare expected to be taken into consideration in the formulation of targeted traffic engineering policiesin the study area.
Kajian Penataan Jalur Pedestrian sebagai Unsur Fisik Pembentuk Karakter Visual dan Aktivitas Penggunjung: Studi Kasus : Gerbang Selamat Datang Simpang Kepur Kota Muara Enim Mita Hargianti; Rika Septiana; Asia Afriani; Husnul Hidayat
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 4 No. 1 (2026): Januari : Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v4i1.1266

Abstract

Pedestrian is one of the most important public spaces for urban areas. On the border of Muara Enim city has a pedestrian that attracts attention, namely the pedestrian welcome intersection kepur. Simpang Kepur pedestrian has a border gate that is the center of attention and the first impression when entering the city of Muara Enim so that it has the opportunity as a face or symbol of the identity of the city of Muara Enim. Visually, the existence of pedestrians and gates at the Kepur intersection looks quite attractive but functionally it is not in accordance with the characteristics of pedestrian activities on the pedestrian so that research is needed to rearrange the previous design so that the function of the pedestrian becomes even better. The method used is qualitative through observation based on facts and activities in the field. Analysis based on the impression of place and activity on the pedestrian. The results obtained that there is a need to change the appearance of the color processing so that the pedestrian becomes more alive, need to keep the pedestrian so that there is no loss or damage, the need for guardrails or vegetation / view barrier plants in the area behind or beside the pedestrian, rearrangement of plants that can absorb dust and can absorb noise, and arrangement of street furniture, namely visual recommendations for a wider bus stop design, replace permanent seating, replace permanent trash.
Analisis Karakteristik Marshall Campuran Aspal AC-WC Pada Kondisi Ambient Temperature Fitra Aulia Azmi; Said Jalalul Akbar; Maizuar Maizuar
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 4 No. 1 (2026): Januari : Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v4i1.1282

Abstract

Highways play a strategic role in supporting economic development, so the quality of pavement materials (flexible pavement) must meet previously established quality standards. The Asphalt Concrete Wearing Course (AC-WC) layer, as the topmost layer of flexible pavement, is susceptible to damage caused by aging triggered by environmental conditions, particularly ambient temperature. Temperatures above 30°C are known to accelerate plastic deformation (rutting) and reduce pavement bearing capacity. The Meteorology, Climatology, and Geophysics Agency indicates that temperatures in Lhokseumawe City, North Aceh, range from 33.7–35.3°C with day-night fluctuations that could potentially accelerate the degradation of mechanical properties. This study aims to analyze the Marshall characteristics of AC-WC asphalt mixtures under ambient temperature conditions. The testing was conducted with varying exposure times of 0, 15, 30, 45, 60, 75, and 90 days at a minimum temperature of 23.90°C and a maximum temperature of 31.80°C, with an average humidity of 87.93%. The test results showed that the AC-WC asphalt mixture experienced a decrease in stability value of 21.37% and an increase in flow value of 36.36%, resulting in a decrease in the Marshall Quotient (MQ) value of 42.52%.
Analisis Hasil Uji Tarik Baja Karbon Penampang Silindris dan Segiempat Dwi Angga Pramana Achmaddillah; Syamsul Hadi; Kreshna Aji Nursyifa; Agil Saputra Nugroho; Muhammad Hamdi Reynard Fahrezi; Gathan Atallah Farras Maulana
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 4 No. 1 (2026): Januari : Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v4i1.1285

Abstract

The unknown exact tensile strength of cylindrical cross-section carbon steel and rectangular cross-section carbon steel is a problem faced. The purpose of the research is to obtain the tensile strength of cylindrical cross-section carbon steel and rectangular cross-section carbon steel. The research method is carried out by turning carbon steel specimens to a diameter of 7.92mm, a length of 200mm and milling carbon steel cross-sections with a width of 12mm, a thickness of 4mm, setting the Tarno Grocky tensile testing machine, clamping both ends of the specimen with grips, tensile testing until the specimen breaks, measuring the gauge length after the specimen breaks and is properly cupped again, making stress and strain curves, and analyzing the tensile test results. The test results show that the tensile strength of carbon steel with a cylindrical cross-section is 554 MPa at a strain of 3.86%, the yield strength is 514 MPa at a strain of 3.06% and the tensile strength of carbon steel with a rectangular cross-section is 712 MPa at a strain of 2.45% and the yield strength is 487 MPa at a strain of 0.59%, which implies that both steels are ductilely broken, due to shrinkage. cross-section (necking) which includes ST 60 because the yield strength is more than 360 MPa.

Page 19 of 20 | Total Record : 196

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