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All Journal Journal of Islamic Law Journal of Applied Civil Engineering and Infrastructure Technology (JACEIT)
Wahyudi, Ismail
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Inovasi Beton Ramah Lingkungan Dengan Pemanfaatan Limbah Kaca dan Plastik PET Ramadhan, Deni; Wahyudi, Ismail; Afiah, Alfiana; Arcana, Gusti Putu Febri; Rizky, Muhammad; Istanto, Kelik
Journal of Applied Civil Engineering and Infrastructure Technology Vol 5 No 1 (2024): Agustus 2024
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jaceit.v5i1.675

Abstract

Nowadays, the use items made from glass and plastic has increased, causing accumulation. One of them is Bakung landfill in Bandar Lampung which accommodates 1,000 tons per day. Accumulating glass and plastic waste has caused various environmental problems. This research was carried out as form of technological innovation and effort to preserve environment due to this waste. The research purpose is finding environmentally friendly concrete formula by substituting glass waste and PET plastic but have characteristics that comply with SNI standards. Each material that makes up the concrete is tested for its characteristics so that normal concrete mix design can be carried out. Glass waste and PET plastic are substituted at 10%, 15%, and 25% into coarse and fine aggregate formulations in normal concrete formula, thereby creating variations in test specimen. The concrete sample has made in cube with dimensions of 15 x 15 x 15 cm. Concrete compressive strength tests were carried out at 7, 14, 21 and 28 days. Compressive results strength test showed that variations in substitute materials in concrete have effect on resulting compressive strength. Concrete test results with 10% and 15% substitution have compressive strength values ​​that was close to each other and higher than 25% substitution. Even though the two compositions have close compressive strength values, they have different standard deviations. The standard deviation values ​​for 10% and 15% substitution have 35.9913 and 23.1299. So, concrete with 15% substitution composition was the most optimal composition because it showed most dominant advantage among others.
Kuantifikasi Objek Jual-Beli dalam Transaksi Borongan di Kota Metro: Perspektif Hukum Islam: Kuantifikasi Objek Jual-Beli dalam Transaksi Borongan di Kota Metro: Perspektif Hukum Islam Wahyudi, Ismail; Nasrudin, Muhamad; Sainul, Sainul
Journal of Islamic Law Vol. 2 No. 1 (2021): Journal of Islamic Law
Publisher : Institut Agama Islam Negeri (IAIN) Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24260/jil.v2i1.165

Abstract

This paper discusses the problem of buying and selling brown sugar in Metro City, which in practice has several exciting things to study related to Islamic law. First, weighing brown sugar together with wooden crates that have different weights. Second, weighing brown sugar using samples or samples. This paper focuses on discussing how Islamic law views the practice of considering brown sugar in Metro City. This phenomenon is studied using qualitative research and a case study approach. The data were obtained using field observation techniques, interviews with traders as sources, then analyzed through three stages: data reduction, data presentation, and conclusion drawing. The results showed that the practice of buying and selling brown sugar in the Metro City Market fulfills the pillars and requirements of buying and selling in Islamic law. Quantification of the objects of sale and purchase in packages at Metro Market based on Islamic Economic Law (HESy) refers to the concept of ‘urf (traditional customs). This practice is included in ‘urf hasan because it is based on convenience, trust, and volunteerism between the seller and the buyer. Thus, the applicable law of weighing brown sugar in Metro City is valid (shahih).
Co-Authors Afiah, Alfiana Arcana, Gusti Putu Febri Istanto, Kelik muhammad rizky, muhammad Nasrudin, Muhamad Ramadhan, Deni Sainul Sainul