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Hujiyanto, Hujiyanto
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Civil Engineering, Building, Construction & Architecture 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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (448.395 KB) | DOI: 10.54297/sciej.v3i2.350

Abstract

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 Work Delay In Slum Quality Improvement Project Puday-Lapulu Ardika, Made; Sufrianto, Sufrianto; Hujiyanto, Hujiyanto; 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.v4i1.461

Abstract

A construction project is an activity that aims to build facilities and infrastructure within the planned timeframe. The project can be defined as an organized effort or activity that uses the available budget and resources that must be achieved to achieve important goals, objectives, and expectations using the existing budget and resources, which must be completed within the planned timeframe so that the project does not experience delays. The purpose of this study was to determine how much work delays, the factors that cause work delays and how much influence the delay factors have on work delays in the Puday- Lapulu Slums Quality Improvement Project. The results of this study indicate the value of SV is Rp. (- 8.25 %) While the value of SPI < 1 is 0.896 < 1, based on the criteria for the value of SV and SPI, it can be said that the work is late and has poor performance. Factors that influence delays are aspects of labor and materials. While the large influence of delay factors on work delays that is 10,9 %.
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 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 Pemilihan Moda Transportasi Angkutan Umum Di Kota Kendari Maisara, Maisara; Hakiman, Hakiman; hujiyanto, hujiyanto; Munandar, Fikri Aris
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.v4i2.529

Abstract

This study aims to determine the characteristics of travelers who use modes of transportation and find out how big the probability by choosing one of transportation mode is in Kendari City. The result show that the characteristics of mode selection based on the reasons that influenced the choice of mode from a total of 73 respondents were as follows, the travelers chose faster time considerations by 48% or as many as 35 people, the travelers who chose security considerations by 11% or as many as 8 people, the travelers who chose convenience considerations by 19% or as many as 14 people, and travelers who chose price considerations by 22% or as many as 22 people. The probability of users of transportation modes in Kendari City shows that people are more likely to use online modes of transportation 51% compared to using public transportation modes of 49%
Studi Karakteristik Marshall Pada Campuran Lapis Aspal Beton (Laston) dengan Bahan Tambah Limbah Kain Nilon Yusnianti, Yusnianti; Sufrianto, Sufrianto; hujiyanto, hujiyanto; Syamsuddin, Syamsuddin
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.v4i2.530

Abstract

The use of nylon fabric waste as adding material for concrete asphalt layers can be one of the solutions, because it can reduce pollution in the environment.The level of variation in adding nylon fabric waste is 0%, 5%, 10% and 15%. Sample testing as many as 24 test specimens. . The purpose of this study is to determine the physical properties of the asphalt with the added material of the nylon fabric waste and to determine the properties of the concrete asphalt layer mixture (Laston) with the added material of the nylon fabric waste. The results of testing the addition of nylon fabric waste levels as added material to the asphalt show that the value of the physical properties of asphalt is penetration, soft point, specific gravity, flame point and fuel point and asphalt dactality meets the standard specifications of the 2018 SNI Marga. As well as the addition of nylon substitution waste a number of asphalt at 5%, 10% and 15% content can affect the nature of concrete asphalt layers (Laston). In variations of 5%, 10% and 15% density value of 2,336 gr/cm, 2,327 gr/cm, 2,343 gr/cm, stability of 1892,4 kg, 2239,0 kg, 1953,6 kg, VMA of 15,9%, 16,2%, 15,6%, VIM of 4,4%, 4,7%, 4,1%, VFB of 73,6%, 70,9%, 74,0%, melting of 3,93 mm, 3,43 mm, 3,02 mm and MQ of 480,1 kg/mm, 652,9 kg/mm, 691,5 kg/mm.
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 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 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.
Co-Authors Ardika, Made Hakiman, Hakiman Harjunan, Harjunan Hawa, Sitti Ilham, Vickky Anggara Lakawa, Irwan Maisara, Maisara Muhammad Muhsar, Muhammad Munandar, Fikri Aris Pratiwi, Nadya Ayu Razmi Noris, Muhamad Sufrianto, Sufrianto Sulaiman Sulaiman Syamsuddin Syamsuddin Yusnianti, Yusnianti