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MUHAMMAD IKHSAN SETIAWAN
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NAROTAMA UNIVERSITY, Indonesia Jl. Arief Rachman Hakim 51, Sukolilo – Surabaya (60117) www.narotama.ac.id
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INDONESIA
NEUTRON : Research from all areas of the Civil Engineering
Published by Universitas Narotama Surabaya
ISSN : 14120860     EISSN : 26853272     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
s an open-access journal publishing original research from across all areas of the Civil Engineering We offer our authors a highly respected home for their research. Partnering with our extensive network of expert peer reviewers, our editorial team provides rigorous, objective and constructive peer review, and will support you throughout the publication process. We led by the same ethical and editorial policy guidelines to ensure that all the research we publish is scientifically robust, original, and of the highest quality. We help your research reach more people and maximize its impact. As an open-access journal, we ensure that your work is immediately accessible and highly discoverable across a range of channels NEUTRON published twice in a year, January and July Focus and Scope NEUTRON publishes original research from all areas of the Civil Engineering
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 68 Documents
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Analysis of the relationship between the working environment and employee performance in selected construction firms in Karachi city Muhammad Tarique Lakhiara Lakhiara; Abd Halid Abdullah; Muhammad Tahir Lakhiar
Neutron Vol 20 No 2 (2021): JANUARY 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

A healthy working environment is important for the performance of workers to prevent undue burden on employees, thus impacting their job efficiency. Numerous working environment factors contributed to job satisfaction. The goal of this analysis was, therefore, to explore the correlation between working environment and the employee performance on the basis of five working environment dimensions. This study utilized the quantitative approach and collected data through questionnaires. The respondents of this study were employees of all positions, which include the manager, senior to junior executives in selected construction firms of Karachi city. By using Pearson's Correlation Analysis, the data were analyzed to measure the relationship among variables. The results indicate that the workplace environment and employee performance have a significant relationship. The support of supervisors was thus identified as the main element in maintaining a positive workplace environment.
An Investigation on Compressive Strength of Concrete Blended With Groundnut Shell Ash Abdul Wahab Abro; Aneel Kumar; Manthar Ali Keerio; Zubair Hussain Shaikh; Naraindas Bheel; Ali Aizaz Dayo
Neutron Vol 20 No 2 (2021): JANUARY 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Concrete is frequently utilized infra-structural construction material all over the world. Cement is the main part of the concrete, during its manufacturing emission of gases such as carbon dioxide (CO2) from cement factories create greenhouse effect. In these days various natural pozzolanic materials are used as partial replacement of cement to enhance strength and durability and to reduction in consumption of cement consequently reduction in carbon dioxide (CO2) emission. The aim of this research is to investigate the effect of groundnut shell ash as a cement replacement material on workability and compressive strength of concrete. One mix of ordinary concrete and five mixes of modified concrete were prepared, where cement is replaced by groundnut shell ash from 3% to 15% by weight of cement, with 3% increment with 1:2:4 binding ratio mixed with 0.5 water/cement ratio. The workability and compressive strength of concrete was investigated. The obtained outcomes demonstrated that, groundnut shell ash as a cement replacement material have significant effect on compressive strength of concrete.
Recycling of Ceramic Tiles and Marble Powder waste as Partial Substitution in Concrete Bilawal Soomro; Sajjad Ali Mangi; Rashid Ali Bajkani; Abdul Qudoos Junejo
Neutron Vol 20 No 2 (2021): JANUARY 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Recycling the waste has been one of the most influential aspect affecting global conditions of the world. In the world of Civil Engineering, it serves the purpose of preservation of the natural building materials such as Sand, Stones, etc. Fair amount of work been done on utilization of the waste such as Fly ash, marble waste, tiles waste, plastic, etc. used as different forms of replacement, provokes the need of work still to be done. So much of the work has been done on wastes available from Marble and Tiles. The combined effect of waste marble powder (M.P) and Ceramic tile waste (CTW) as partial replacement of Cement (10%) and Coarse Aggregates (10%,20%,30% respectively) is to be observed and analyzed. The obtained results will be compared with the conventional cement concrete at 7 and 28 days of Curing. Total 24 number of cylinders casted and tested for their workability and Compressive strength. The Workability of Concrete with replacement decreased with increasing ratio of replacement as well as its Compressive Strength. The Compressive strength of concrete with replacement is approximately of same value as that of Conventional Concrete at (10%+10%) partial substitution ratio.
38 Floor Apartment Design With Special Moment Frame System (SMF), With Performance Based Design Using SNI 1726: 2019 and SNI 1729: 2015 Achmad Ubaidillah; Tony Hartono Bagio; Julistyana Tistogondo
Neutron Vol 20 No 2 (2021): JANUARY 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Apartments are an option for vertical housing. Currently, with the rapid development of technology, a person will tend to choose housing that can support their mobility. So it is planned that an apartment building structure is planned using a Special Moment Frame System using Performance Based Design referring to SNI 1729: 2015 and SNI 1726: 2019. Planned with columns HC 582x500x50x65 and HC 508x462x75x75 as well as WF beams 400x300x12x22 and WF 400x200x12x22. The results show that the columns and beams are strong but wasteful.
Assessment of Physical and Mechanical Properties of Polyurethane as Ground Improvement Material for Peat Mohamad Niizar Abdurahman; Adnan Zainorabidin Kasbi Basri; Azman Kassim
Neutron Vol 20 No 2 (2021): JANUARY 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Peat is considered problematic soil due to its large void ratio, high compressibility and low shear strength. Various ground improvement methods have been developed in recent years to improve peat’s strength properties. Polyurethane grouting is one of the ground improvement methods that is gaining recognition as effective and fast way to stabilize soil. Polyurethane is a lightweight material produced by mixing polyol and isocyanate chemicals. Upon mixing, a polyurethane foam is created which expands up to a few times of its original volume. In this study, the strength characteristics of polyurethane with different mix ratios of polyol to isocyanate were evaluated to determine the optimum ratio suitable to be used to stabilize peat. Polyol to isocyanate ratio of 1:1, 1:1.5, 1:1.2, 1:2.5 and 1:3 were tested in this this research. The propagation, microstructure and density of polyurethane were investigated. Compressive strength of polyurethane determined using Unconfined Compression Strength test. Polyurethane created with higher ratio of isocyanate bears higher density and compressive strength compared to the polyurethane with lesser quantity of isocyanate. The cell structure of the polyurethane also is smaller with thicker cell walls. However, the curing time consumed by the polyurethane with high ratio of isocyanate is 8 times greater than the normal polyurethane. Thus, polyurethane ratio with fast curing time and high compressive strength was chosen as the optimum mix ratio to be used to stabilize peat.
The Effect Of The Implementation Of Occupational Health And Safety Management Systems (Smk3) Against Security Tower Construction Project " X ”In Surabaya Mansur; Fredy Kurniawan; Atik Wahyuni
Neutron Vol 20 No 2 (2021): JANUARY 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

This study aims to analyze the effect of the implementation of the Occupational Safety and Health Management System (SMK3) on the productivity of workers on the "X" tower construction project in Surabaya. The population used is the employees of the tower construction project "X" in Surabaya as many as 230 employees, while the number of samples taken 146 employees. The data used is sourced from primary data. Data collection is done by distributing questionnaires. The data analysis technique used is multiple linear regression analysis.The results in this study indicate that: (1) Safety Factor has a significant and positive influence on Project Security; (2) Equipment and Work Wear Factors have a significant positive effect on Project Security; (3) Vehicle Track Factors have a significant positive effect on Project Security; (4) Fire Factor has no significant effect on Project Security; (5) Equipment and Machine Factors have a significant positive effect on Project Security; (6) Electricity and Sound factors have a significant positive effect on Project Security; (7) Public Protection Factors have no significant effect on Project Safeguards; (8) General Factors have a significant positive effect on Project Security; (9) Occupational Health Factors have a significant positive effect on Project Security.
The Effects of Coir Fibers on Workability and Strength Properties of Concrete Ghulam Shabir Solangi Solangi; Gulmir Khan Sahito Sahito; Manthar Ali Keerio Keerio
Neutron Vol 20 No 2 (2021): JANUARY 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

This study aimed toward analyzing length and content of coir fiber on workability and strength of concrete. For this purpose, different fractions of coir fibers of length as 10 mm, 20 mm and 30mm are used with varying proportions as 0.15%, 20%,0.25%,0.3% and 0.35% by the volume of concrete. One mix of control concrete and 15 mixes of concrete with inclusion of cot fibers were prepared. The experiments were conducted to check the workability, compressive and tensile strength of concrete. It was observed from conducted research, that the workability is decreased with increasing the content of coir fibers. On the basis of conducted research, the inclusion of 0.25% of coir fibers of length 20mm is optimum. With inclusion of 0.25% of coir fibers of length 20mm, compressive and tensile strength is improved as compared to control mix.
Analysis of Accident-Prone Areas in North Jakarta Widodo Budi Dermawan; Muhamad Yuan Kelvin Fuadi; Muhammad Isradi; Amar Mufhidin
Neutron Vol 21 No 1 (2021): JULY 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Transportation is an important part of human life, which has the benefit of facilitating the movement of people and the transportation of goods. This study aims to determine and analyze the locations where accidents often occur along the Cakung - Cilincing road, North Jakarta and determine what factors cause accidents along this road. The research on the analysis of accident-prone areas used the observation method with the quantity data provided by the North Jakarta Police Traffic Unit through IRSMS data, and the survey method was carried out on roads with the recording of passing vehicles, followed by calculations according to MKJI 1997. The results of the study were the location coordinates of the locations that had the highest value Accident-prone, namely segment 3 at the coordinate point -6.140891 to -6.13712 with an AEK value of 80 which causes 6 deaths, 0 serious injuries, 1 minor injury, 5 objects losses, and Rp.13,200,000 material loss. The number of accidents at the coordinate point was 5 incidents. The value of material losses from accidents on Jalan Cakung Cilincing reached Rp. 92,900,000 for the last 4 years from 2016 - 2019. And research on road segment performance obtained LOS A with DS 0.06 in the morning, 0.06 in the afternoon, and 0, 07 in the afternoon.
Response Analysis Of The Lower Structure Of Girder Bridge With Lead Rubber Bearing (LRB) And High Damping Rubber Bearing (HDRB) Due To Earthquake Excitation Donald Essen; Siti Sukainah
Neutron Vol 21 No 1 (2021): JULY 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Seismic isolation is a system to reduce seismic energy acting on the bridge by adding an object so-called base insulator. The purpose of this study is to obtain a comparison of dimension, damping ratio, and the lower structure response designed as a ductile component with High Damping Rubber Bearings (HDRB) and Lead Rubber Bearings (LRB). This study uses CSI BRIDGE 21 computer program. Earthquake forces analysis uses dynamic analysis with response spectra as final evaluation for the performance of lead rubber bearing and high damping rubber bearings and the load characteristics for bridges is following SNI 1725: 2016 and bridge design for earthquake load is following SNI 2833: 2016. The bridge performance is expected to no longer rely merely on the dimensions and stiffness of the pillars in response to earthquake loads, but also on LRB or HDRB as a structural device on bridge support by increasing the effectiveness of pillar stiffness in providing damping energy during an earthquake.
Evaluation Of Construction Project Time And Cost Control Based On Earned Value And Crash Project Method Mohammad Irfandio Kurniawan; Diah Ayu Restuti Wulandari; Julistyana Tistogondo
Neutron Vol 21 No 1 (2021): JULY 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Project development and how to control time and costs in the construction project of a public junior high school 1 Surabaya. This research was conducted with the aim of knowing and comparing the amount of duration and cost after acceleration by using the alternative Earned Value Analysis. The case study in this research takes the construction project of a public junior high school 1 Surabaya which is located in Surabaya. The data needed in this study include the S curve, recapitulation of project cost calculations, a list of budget plans (RAB), and a list of unit wage prices for workers. The research method used is to design network planning, calculate the cost variance and variance schedule for each activity that changes due to changes in the duration of implementation, acceleration of work duration, and determination of the optimum cost and duration due to the application of the Earned Value Analysis method. For the calculation of the variance Schedule on week 34 shows a positive result of Rp. 109,550,470. For the calculation of the cost variance from week 34 shows - Rp. 2,488,159. For the calculation of Estimate at completion (EAC) on week 34 of Rp. 6,663,998,229. For the calculation of Estimate temporary schedule, the evaluation week 34 experienced a delay of 53 days from the original schedule. So the work completion time is 233 calendar days

Page 4 of 7 | Total Record : 68

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