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All Journal Jurnal Konstruksia Semesta Teknika Dinamika Teknik Sipil JAST : Jurnal Aplikasi Sains dan Teknologi Bulletin of Civil Engineering Prosiding Seminar Nasional Program Pengabdian Masyarakat
Harsoyo, Yoga Aprianto
Universitas Muhammadiyah Yogyakarta
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Engineering Environmental Science Medicine & Pharmacology Social Sciences Transportation Other

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Journal : bulletin of civil engineering

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Pengaruh Penambahan Serat Limbah Plastik HDPE terhadap Kuat Tekan pada Mortar Yoga Aprianto Harsoyo; Muhammad Rifqi Fauzi
Bulletin of Civil Engineering Vol 1, No 2 (2021): Agustus
Publisher : Civil Engineering Department, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/bce.v1i2.12418

Abstract

Mortar is a construction material commonly used in building and road infrastructure. Some constructions that use mortar include Lane Concrete (LC), species, light brick adhesives, wall plaster, mechanical installation, and others. HDPE plastic waste fiber (High density polyethylene) in this study is a mixture of materials as binders and cement substitutes. HDPE plastic is one type of plastic that when viewed visually is classified as concentrated, where the use of this type of plastic is usually used for beverage bottles. The HDPE plastic type is easy to recycle. In 2015, global plastic waste in the world was recorded at 2.5 billion tons per year, so this research is expected to reduce the amount of plastic waste in Indonesia. The purpose of this study was to analyze the  effect of mixing HDPE plastic waste fibers on compressive strength and mortar weight. This HDPE variations of 0%, 2%, 4%, and 6% is used from the weight of the cement. This study was carried out to obtain the compressive strength at the ages of 7 days and 28 days using cube specimens with dimensions of 15 cm × 15 cm × 15 cm. Based on the results of the test, the highest compressive strength for mortar at of 2% fiber variation at 28 days is 14.47 MPa. The compressive strength of mortar at the age of 7 and 28 consecutive days increased by 11%. While the addition of fibers, compressive strength of mortar decreases with the increasing number of fiber mixtures. Fiber mortar decreased in weight from 7696 grams to 7640 grams, 7422 grams, and 7280 grams, for fiber of 2%, 4%, and 6% respectively.
Analisis Risiko Flow Information dalam Construction Supply Chain dengan Tinjauan Pekerjaan Pondasi Rakit Yoga Aprianto Harsoyo; Rais Fattiya Rahman
Bulletin of Civil Engineering Vol 2, No 2 (2022): Agustus
Publisher : Civil Engineering Department, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/bce.v2i2.12419

Abstract

Kurangnya intensitas bertukar informasi dan kepercayaan antara kontraktor dengan pemasok menyebabkan pekerjaan dalam proyek tersebut terhambat. Tujuan dari penelitian ini adalah mengetahui tingkat risiko dan respon penanangan risiko aliran informasi dalam rantai pasok pada proyek Student Dormitory UMY dengan tinjauan pondasi rakit. Metode yang digunakan dalam penelitian ini adalah frequency index dan severity index. Penelitian ini menggunakan jenis penelitian kuantitatif. Data – data yang digunakan berasal dari interview dan kuisioner. Dan diketahui dalam pembangunan gedung Sudent Dormitoy UMY terdapat 10 variabel risiko aliran informasi dari persepsi kontraktor terhadap supplier dan 10 variabel risiko aliran informasi dari persepsi supplier terhadap kontraktor. Dari hasil analisis data 10 variabel risiko didapatkan 1 variabel dengan risiko kategori sangat tinggi dari persepsi kontraktor terhadap supplier dan 2 variabel dengan risiko kategori sangat tinggi dari persepsi supplier terhadap kontraktor. Semua pihak yang terlibat dalam aktivitas rantai pasok tersebut memilih melakukan respon risiko untuk mengurangi dampak risiko tersebut.
Co-Authors Anita Rahmawati Arkan, Muhammad Reza Asih Susanti Emil Adly Irwan Setyo Wibowo Muhammad Rifqi Fauzi Nurfiansyah, Ervan Nurhidayah Panara Rais Fattiya Rahman Wahyu Widodo Yayat Hidayat