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All Journal INTEGRITAS : Jurnal Pengabdian Sultra Civil Engineering Journal (SCiEJ)

Lakawa, Irwan

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Author-ID : 7662136

Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Law, Crime, Criminology & Criminal Justice Social Sciences Transportation

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Testing the Compressive Strength of Concrete with the Addition of Coconut Shell Waste Pratiwi, Nadya Ayu; Lakawa, Irwan; Sulaiman, Sulaiman; Hujiyanto, Hujiyanto
Sultra Civil Engineering Journal Vol 3 No 2 (2022): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

The purpose of this study was to (1) analyze the characteristics of fresh concrete with the addition of coconut shell waste (2) to analyze the compressive strength of concrete with the addition of coconut shell. The research location for making concrete was carried out at the Laboratory of the construction of the water resources and community development department of the Southeast Sulawesi provincial government. There were 24 specimens printed in the form of a cylinder with dimensions of 30cm x 15cm with the composition of adding 0%, 5%, 10%, and 15% coconut shell waste. Which was then tested for compressive strength at the age of 7, 14, and 28 days. Based on the compressive strength test with a quality plan of f'c 20 MPa, on the 28 day test with the addition of 0% is 23.71 MPa, the addition of 5% is 20.59 MPa, the addition of 10% is 19.97 MPa, and an additional 15% is 13.53 MPa. Coconut shell as a substitute for coarse aggregate for quality f'c 20 MPa can only be used under 10% of the amount of coarse aggregate.

Analysis of National Road Slope Risk Level Based on Geographic Information System Menudi, La; Lakawa, Irwan; Sufrianto, Sufrianto; Ilham, Vickky Anggara
Sultra Civil Engineering Journal Vol 3 No 2 (2022): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

The purpose of this study is to investigate the failure and instability of slopes, control and evaluate treatments and create slope data in a geographic information system as a planning data base to determine the level of risk, hazard consequences and the distribution of slopes along the National road in Konawe Selatan district. In this study using the Bina Marga slope survey method, which is to provide a score or value for each parameter measured in the field and a database is made using a geographic information system (GIS) to state the level of slope risk using the Bina Marga standard value. The results showed that the slopes spread on the Awunio – Lapuko and Lainea – Awunio National roads were dominated by artificial slopes, namely 4 embankment points and 5 excavation points and 1 natural slope point. From the results of the investigation and data collection on the slopes, the data is processed using the formula R = 0.9.H + C. where R is the risk level value, H is the hazard value and C is the consequence value. The conclusion from the above research results is that the slopes at the study site are dominated by artificial slopes with slope characteristics of soil, sand and weathered rock so that the slopes are unstable and have a high level of risk.

Study on the Impact of Climate Change on Damage to National Roads in the Lapuko – South Konawe District/ Kendari City Boundary Sutrisno, Muhammad; Lakawa, Irwan; Haryono, Haryono; Syamsuddin, Syamsuddin
Sultra Civil Engineering Journal Vol 3 No 2 (2022): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

The land transportation sector is one sector that is very influential on climate change. One of the impacts faced by the road network due to climate change is damage to roadside sections. This is the basis for the researchers to conduct research in Lapuko - Boundary of South Konawe Regency / Kendari City The purpose of this study was to determine how much influence climate change, namely rainfall, humidity, and temperature had on road damage on the Lapuko - South Konawe District boundary / Kendari City. To find out how much influence the independent variable has on the dependent variable or whether there is an influence of the independent variable on the dependent variable, classical statistical analysis tests, t and F tests and the coefficient of determination test are carried out through SPSS version 24 for windows. The results of the analysis of climatic conditions on the Lapuko - Konawe Selatan Regency / Kendari City boundary with an average rainfall of 184 with the highest rainfall occurring in May while the average humidity is 92.9% and the temperature is 36.20 C which occurs from 2017 to 2021. The road conditions on the Lapuko – Konawe Selatan Regency/Kendari City boundary tend to be flexible with an average road condition level of 45.65%, moderate 43.74 and slightly damaged 8.48 and heavily damaged 2.10 from 2017 to 2021. There is the influence of climate change to road damage in the Lapuko – South Konawe District/Kendari City Boundary section with a value of 74.5%.

Analysis of Construction Workers' Perceptions of Company Services (Case Study: PT. Konawe Multi Usaha) Bachmid, Sitti Nurkhalisah; Lakawa, Irwan; Sufrianto, Sufrianto; Sudardjat, Catrin
Sultra Civil Engineering Journal Vol 3 No 2 (2022): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

In supporting the success of infrastructure development, it is necessary to have good cooperation between owners, contractors and workers which must be supported by the implementation of a project management system. A construction project is a series of activities which are generally short-term, dynamic, with varying intensity of activities and limited funds. If the project construction implementation is not managed properly, it will become a conflict or dispute between the elements involved in project implementation. In the current reform era, improving the quality of public services is a demand for workers where workers have begun to understand their rights as workers/employees. The purpose of the study was to determine the contractor's performance and to determine the perception of construction workers on the services of the company PT. Konawe Multi Usaha. The results showed that the perception of construction workers on the company's services at the company PT. Konawe Multi Usaha is rated by workers in the category of Fairly Good. There are factors that influence the perception of construction workers' satisfaction on company service satisfaction by using the Customer Satisfaction Index (CSI) analysis, the value of worker satisfaction is 73.43%, which means that the level of worker satisfaction is in the Satisfied category

Modified Asphalt Mix Performance With The Addition Of Human Hair Waste Zulfikar, Zulfikar; Lakawa, Irwan; Sulaiman, Sulaiman; Hawa, Sitti
Sultra Civil Engineering Journal Vol 3 No 2 (2022): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

The development of road infrastructure in Indonesia is currently increasing, starting with new road construction projects to road improvement projects. To prevent premature damage to road pavements due to loading and the influence of water, it is to improve the quality of asphalt as a binder material from aggregate in the composition of road pavements. especially for the Asphalt Concrete-Binder Course (AC-BC) mixture, the addition of human hair waste can be used as an added material to minimize the use of asphalt and overcome the weaknesses of asphalt and waste utilization.The objectives of the study were: (1) to analyze the characteristics of the modified asphalt mixture with the addition of human hair waste. (2) Analyzing the performance of modified asphalt mixture with the addition of human hair waste.The results of analysis and testing in the laboratory show that the modified asphalt mixture performance with the addition of hair will increase the density value up to 2,355 gr/cc, increase the stability value up to 1886,2 kg, increase the value of the asphalt filled cavity (VFB) up to 82.8% and increase the Marshall value. Quotient (MQ) up to 653.3 kg/mm, but will reduce the value of the melt (flow) up to 2.9 mm, reduce the value of voids between mineral aggregates (VMA) up to 15.8% and reduce the value of mixed air voids (VIM) up to 2.7% but still within the threshold of meeting specifications

Evaluation of the Performance of the Roraya I Irrigation Network in Baito District in South Konawe Regency Didi Saputra, Eka; Lakawa, Irwan; Sulaiman, Sulaiman; Syamsuddin, Syamsuddin
Sultra Civil Engineering Journal Vol 4 No 1 (2023): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54297/sciej.v4i1.457

Development and management of irrigation networks requires good infrastructure so that it will support increased food production, improve community welfare and optimize the use of water resources. The purpose of the study was to analyze the performance of the physical infrastructure irrigation system in the Roraya I Irrigation Area, and to analyze the handling of the physical infrastructure irrigation system performance in the Roraya I Irrigation Area The results of the analysis of the performance of irrigation networks on physical infrastructure are lacking and need attention, with a weight value of 59.44%, and for handling irrigation networks on physical infrastructure in the form of maintenance that is heavy repair or replacement

Testing The Compressive Strength Of Concrete With The Utilization Of Rice Husk Ash And Palm Fiber Bhakti Aslon, Muh. Wonua; Lakawa, Irwan; Sulaiman, Sulaiman; Hawa, Sitti
Sultra Civil Engineering Journal Vol 4 No 1 (2023): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54297/sciej.v4i1.458

Development in the field of structure is currently progressing very rapidly in various field so that concrete is one of the choices as a structural material in building construction, basically concrete is made by mixing portland cement, coarse aggregate, fine aggregate, and water as a binder for these materials. Due to the development of the issue of current resource limitations, the prevention is by innovating the manufacture of concrete using palm fiber waste as an added ingredient from sand and rice husk ash waste as an added ingredient from cement. The purpose of study was to (1) analyze the compressive strength of concrete with variations ini rice husk ash and palm fiber (2) analyze the addition of rice husk ash and palm fiber with different mixture variations that could affect the compressive strength of concrete. The result showed that normal concrete with an average compressive strength of 24.20 MPa and an increase in compressive strength with a mixture of 0.5% palm fiber and 5% rice husk ash with an average strength of 25.90 MPa without using superplasticizer, if the variation mixture exceeding the mixed variation of 0.5% palm fiber and 5% rice husk ash will deacrease

Study Of Concrete Mixture Using Sea Sand With Fresh Water and Sea Water Cure Arsyad, Febriansyah; Lakawa, Irwan; Ilham, Vickky Anggara; Hakiman, Hakiman
Sultra Civil Engineering Journal Vol 4 No 1 (2023): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54297/sciej.v4i1.459

The purpose of this study was to (1) analyze the characteristics of fresh concrete mixed with sea sand (2) to analyze the compressive strength of sea sand concrete with fresh water and sea water curing. In this study, the specimens used were 21 cylinders with a job mix design plan of f'c 25 MPa with a curing duration of 7 days, 14 days, and 28 days. At the age of 7 and 14 days the compressive strength of fresh water curing was 30.29 MPa and 33.12 MPa higher than seawater curing 29.02 MPa and 32.13 MPa, while at 28 days the compressive strength of seawater curing was 37. 08 MPa compared to fresh water curing of 33.97 MPa. Sea sand concrete has a very good quality compared to normal concrete and sea sand can be used in construction projects by taking into account the specifications in accordance with the Indonesian National Standard (SNI).

Analysis of Langkolome River Flood, Wambona Village, Muna Regency (Case Study: Langkolome River, Wambona Village, Muna Regency) Hasrudin, La Ode; Lakawa, Irwan; Sudardjat, Catrin; Sufrianto, Sufrianto
Sultra Civil Engineering Journal Vol 4 No 1 (2023): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54297/sciej.v4i1.460

Rivers are natural channels on the surface of the earth to drain water, apart from that, of course, interactions between discharges, other factors such as human activities along rivers give different characteristics of river formation. the largest portion comes from land clearing activities around the Langkolome river body located in Wambona Village, South Wakorumba District, Muna Regency. Based on the results of the calculation of the flood discharge of the Langkolome River in Wambona Village from 10 years of rainfall data, namely Q10 = 128,773 m3/sec, Q25 = 244,067 m3/sec. The capacity of the Langkolome river which has an impact on flooding Q = 158,063 m3/s. The maximum rainfall is greater than the capacity of the river, so this causes flooding in the Langkolome River, Wambona Village, Muna Regency

Pengaruh Karakteristik Lalu Lintas Terhadap Kebisingan Jalan Raya Lakawa, Irwan; Sufrianto, Sufrianto; Syamsuddin, Syamsuddin; Rahman, Irwanto
Sultra Civil Engineering Journal Vol 4 No 2 (2023): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54297/sciej.v4i2.525

The availability of transportation facilities in urban areas strongly supports community activities and mobility from one land use to another. The increase in the number of motorized vehicles causes an increase in noise level on the highway. The purpose of this study was to analyze the traffic characteristics on Ahmad Yani street Kendari City, noise level, and partial effect of traffic characteristics on the noise level. The research method uses descriptive and parametric statistical approaches. The results showed that the average traffic volume on Ahmad Yani street was 1179 pcu/hour, with a composition of motorcycles 59%, light vehicles 37%, and heavy vehicles 4%. The average vehicle speed is 48 km/hour and average traffic density is 51 pcu/km. The highest noise level occurred in the school area of 76.1 dB, while the lowest occurred in the trading area of 70.5 dB. The average noise level on the Ahmad Yani street is 73.4 dB. The effect of vehicle volume on the noise level is 56.7%, vehicle speed on the noise level is 53.4%, and the traffic density on the noise level is 68.7%. This shows that the traffic density variable has the greatest influence on the noise intensity on the highway, followed by vehicle volume variable, and the lowest is vehicle speed variable.

Co-Authors Abdillah, Muh. Fiqram ADHAR, ADHAR Ahmad Ahmad Ali, Rahmat Andi Bahrun Arsyad, Febriansyah Bachmid, Sitti Nurkhalisah Bana, Sahindomi Bhakti Aslon, Muh. Wonua Bona, Muh Samtun Didi Saputra, Eka Fitrawansyah, Dian Florentinus, La Derita Hado, Hado Hakiman, Hakiman Harjunan, Harjunan Haryono Haryono Hasrudin, La Ode Hawa, Sitti Hayadi, Hayadi Hidayat, Ahid Huiyanto, Hujiyanto Hujiyanto, Hujiyanto Idati, La Ode Munawal Akbar Ilham, Vickky Anggara Jassin, Andi Makkawaru Jaya, Ansar Juantoro, Eko Efendi La Ode Muhamad Magribi, La Ode Muhamad M. Basri . Magribi, La Ode Muh Menudi, La Muhammad Muhsar, Muhammad Pratiwi, Nadya Ayu Rachmat, La Ode Musa Rahman, Irwanto Rahmat, La Ode Musa Rahmawati, Neti Rajanun, Rajanun Raksi, Sunandar Rasyid, La Ode Ahmad Razmi Noris, Muhamad Ruhimat, Iman Saputra, Arsum Rheza Djaya Saputra, Muhammad Roni Anwar Satyadharma, Maudhy Sudardjat, Catrin Sufrianto, Sufrianto Sulaiman Sulaiman Sumariyani, Sumariyani Sutrisno, Muhammad Syamsuddin Syamsuddin Taufik, Yani Zulfikar Zulfikar

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