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All Journal Media Ilmiah Teknik Sipil INTEGRITAS : Jurnal Pengabdian Sultra Civil Engineering Journal (SCiEJ) Sultra Jurnal Pengabdian Masyarakat
Lakawa, Irwan
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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 (SCiEJ) 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

Abstract

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 (SCiEJ) 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

Abstract

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 (SCiEJ) 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

Abstract

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 (SCiEJ) 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

Abstract

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.
Pengaruh Penambahan Bottom Ash Dan Fly Ash Sebagai Bahan Subtitusi Campuran Beton Harjunan, Harjunan; Lakawa, Irwan; Hujiyanto, Hujiyanto; Ilham, Vickky Anggara
Sultra Civil Engineering Journal (SCiEJ) 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.v4i2.526

Abstract

The development of construction development is currently experiencing rapid progress, which has led to an increase in demand for construction materials. Therefore, other materials are needed as or at least materials capable of reducing the use of aggregate for use in making concrete. This effort is an alternative to utilizing waste from the agricultural plantation industry or factory waste that is left alone. The aim of this research is to analyze the characteristics and compressive strength of concrete with bottom ash as a fine aggregate additive and fly ash as an additive to cement. The location for the concrete making research was carried out at the UPTD Construction Laboratory of the water resources and community development service of the Southeast Sulawesi provincial government. With a total of 16 test objects, they were printed in a cylindrical shape with dimensions of 30 x 15 cm. Based on compressive strength testing with an f'c quality plan of 20 MPa, with 10% substitution of fly ash as cement and bottom ash as fine aggregate with variations of 10%, 15%, 20%, the compressive strength decreased. for 7 days of age respectively, it is 12.31 MPa, 11.89 MPa, and 11.46 MPa. Meanwhile, at the age of 28 days, respectively, it was 19.11 MPa, 16.99 MPa and 15.29 Mpa
Analisis Pengaruh Peningkatan Jalan Lingkar Kota kendari Terhadap Nilai Jual Lahan (Study pada ruas jalan bts kota Kendari dan Kab Konawe Selatan) Hujiyanto, Hujiyanto; Lakawa, Irwan; Sufrianto, Sufrianto; Muhsar, Muhammad
Sultra Civil Engineering Journal (SCiEJ) Vol 5 No 1 (2024): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54297/sciej.v5i1.578

Abstract

ABSTRAK Pembangunan/Peningkatan prasarana infrastruktur akan memberi dampak pada berbagai hal yang terkait dengan infrastruktur tersebut. Pemerintah Kota Kendari saat ini sedang membangun Jalan Lingkar Kota Kendari yang dilaksanakan secara bertahap (multy year). Dimana pembangunan itu berupa peningkatan jalan yang sudah ada (jalan kolektor) atau pun membangun pada lahan baru. Adanya pembangunan jalan lingkar tersebut secara langsung akan berdampak pada kenaikan harga lahan pada lokasi yang dilakukan pembangunan/peningkatan jalan. Penelitian ini bertujuan untuk mengetahui harga lahan dari sebelum dilakukan pembangunan dan harga lahan pada saat ini. Penelitian ini adalah penelitian Non-eksperimental yang sifatnya deskriptif, yaitu memberikan gambaran terhadap kondisi objek penelitian sebagaimana adanya. Jenis studi dilakukan dengan wawancara dan survey melalui kuesioner kepada responden, kemudian dilakukan analisis untuk menghasilkan suatu kesimpulan berdasarkan data yang ada. Terjadi perubahan harga lahan yang signifikan dari sebelum dibangun jalan lingkar dan harga saat ini. Terjadi kenaikan harga lahan dari tahu 2008 sampai dengan 2015 sebesar 220% dan tahun 2008 – 2023 kenaikan sebesar 210%. Factor Variabel jarak, luas dan lebar jalan berpengaruh signifikan terhadap kenaikan harga lahan. Model Persamaaan perhitungan nilai jual lahan adalah Y = -270683,63 – 2834,15X1 + 3198,80 X2 + 130532,85X3 Kata kunci : harga lahan; Pengaruh; Peningkatan
Tinjauan Kinerja Layanan dan Kepuasan Penumpang Angkutan Penyeberangan Pure - Raha Lakawa, Irwan; Hujiyanto, Hujiyanto; Syamsuddin, Syamsuddin; Razmi Noris, Muhamad
Sultra Civil Engineering Journal (SCiEJ) Vol 5 No 1 (2024): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54297/sciej.v5i1.595

Abstract

The Pure-Raha ferry port in Southeast Sulawesi Province is a port that serves passenger and goods crossings connecting the mainland of Buton Island and Muna. Good service quality is one of the determining factors for the company's success. The research method is structured through interviews with respondents by answering the questions in the questionnaire. The analysis used uses Importance Performance Analysis (IPA) and Customer Statistics Index (CSI). The research results show that the consumer satisfaction index for the service performance of the Pure-Raha ferry port in Southeast Sulawesi Province is 0.71. This shows that consumers are satisfied with the quality of port services by 71%. However, the management needs to create a special queue for motorbike riders.
Analisis Pengaruh Ukuran Maksimum Agregat Kasar Terhadap Kuat Tekan dan Porositas Pada Beton Normal Hujiyanto, Hujiyanto; Lakawa, Irwan; Hakiman, Hakiman; Paembonan, Marhcel Yupi
Sultra Civil Engineering Journal (SCiEJ) Vol 5 No 2 (2024): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54297/sciej.v5i2.676

Abstract

Concrete is a very popular building material used in the world of construction services, consisting of a mixture of Portland cement (PC) or other hydraulic cement, fine aggregate, coarse aggregate and water, with or without the use of additional materials that form a solid mass. This test is a research study in the laboratory by examining the materials that make up concrete including aggregate sieve analysis testing, water content testing, mud content testing, unit weight testing, aggregate specific gravity testing, coarse aggregate wear testing, slump testing and compressive strength testing, porosity testing, which is carried out according to the SNI method. Based on the results of the research carried out, it was found that the average compressive strength value of concrete for two different types of crushed stone material, for a gradation of 1-2 cm with moramo crushed stone material was 17.94 Mpa and pondidaha material was 18. 41 Mpa. And for a gradation of 2-3 cm, the average compressive strength for moramo crushed stone was 16.90 Mpa, while for pondidaha crushed stone it was 17.46 Mpa
Analisis Kinerja Lalu Lintas di Ruas Jalan Pemuda Kabupaten Kolaka Lakawa, Irwan; Syamsuddin, Syamsuddin; Harisman, Harisman
Sultra Civil Engineering Journal (SCiEJ) Vol 5 No 2 (2024): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54297/sciej.v5i2.695

Abstract

The purpose of this research is to determine the magnitude of the traffic flow that passes along the Jalan Pemuda Kolaka Regency section and determine the performance of the road as well as analyzing the operational performance of traffic on the Jalan Pemuda Kolaka Regency section including: capacity, degree of saturation (DJ), speed and travel time, level of service and knowing the condition of side obstacles on the Jalan Pemuda Kolaka Regency section. The data collection method is a direct survey by recording traffic volume and side obstacles. The research results obtained were the traffic volume at the observation point on the Jalan Pemuda Kolaka Regency section (direction Kolaka-Kolaka Utara) based on traffic volume values that the highest traffic activity occurred on Monday at 731 skr/hour at 16.00 – 17.00 and the lowest traffic activity occurred on Jalan Pemuda Kolaka Regency (North Kolaka-Kolaka direction), namely on Saturday at 316 skr/hour at 08.00 – 09.00. The peak degree of saturation on the Jalan Pemuda Kolaka Regency section (direction Kolaka-North Kolaka) is Monday at 07.00-08.00 with a degree of saturation of 0.50 and the Jalan Pemuda Kolaka Regency section (direction North Kolaka-Kolaka) is Monday 07.00-08.00 with a degree of saturation of 0.32. Side obstacles on the Pemuda Kolaka Regency road show the highest side resistance values occurring in the morning at 07.00 – 08.00 with a value of 629. For the side obstacle class on Jalan Pemuda Kolaka Regency for the total in both directions, namely T (high).
Uji Kuat Tekan Mortar Dengan Substitusi Abu Batu Moramo Pada Campuran Mortar Pasir Halus Sabulakoa: Compressive Strength Test Of Mortar With Moramo Stone Ash Substitution In Sabulakoa Fine Sand Mortar Mixture Hujiyanto, Hujiyanto; Lakawa, Irwan; Ilham, Vickky Anggara
Media Ilmiah Teknik Sipil Vol. 13 No. 1 (2025): Media Ilmiah Teknik Sipil
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/mits.v13i1.7767

Abstract

Mortar mixture is an important element in civil/construction work. As a binding agent, mortar mixtures are widely used in various types of work with different strength levels according to their needs. Many sand raw materials are often used but do not meet the material requirements, either grain gradation or other requirements. In this research, a compressive strength test was carried out using fine sand with the addition of stone ash, to test how much strength was achieved with varying percentages of additional stone ash. The manufacture of test specimens for this mortar mixture refers to SNI 03-6882-2002. Testing was carried out at 7 days, 14 days and 28 days. With additional variations of 0%, 20%, 40% and 60% stone ash. The results of this research are mortar mixtures with the addition of 20% stone ash will increase the compressive strength from 4.74 MPa without the addition of stone ash to 7.13 MPa, tending to decrease at an additional 40% the compressive strength is 6.96 MPa and at an additional 60% the strength is obtained. press 5.74Mpa. The simple regression equation for the relationship between the addition of the percentage of stone ash (variable x) and the compressive strength value (variable y) is y = -22.578x2 + 14.97x + 4.8122 with the coefficient of determination R2 = 0.97 (very strong).
Co-Authors Abdillah, Muh. Fiqram ADHAR, ADHAR Ahmad Ahmad Ahsan, Laode Muhammad Fahrizal Ali, Rahmat Andi Bahrun Arsyad, Febriansyah Bachmid, Sitti Nurkhalisah Baehaqi Bana, Sahindomi Bhakti Aslon, Muh. Wonua Bona, Muh Samtun Didi Saputra, Eka Fitrawansyah, Dian Florentinus, La Derita Gunawan Gunawan Hado, Hado Harisman Harisman Harjunan, Harjunan Haryono Haryono Hasrudin, La Ode Hawa, Sitti Hayadi, Hayadi Hendriyansa, Muh. Hidayat, Ahid Hujiyanto, Hujiyanto Idati, La Ode Munawal Akbar Ilham, Vickky Anggara Irvandi Cahyadi, I Made Jassin, Andi Makkawaru Jaya, Ansar Juantoro, Eko Efendi La Ode Muhamad Magribi, La Ode Muhamad M. Basri . Magribi, La Ode Muh Makmur, Muzammil Menudi, La Muammar Makmur, Muammar Muhammad Muhsar, Muhammad Paembonan, Marhcel Yupi 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