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IMPLEMENTATION OF VALUE FOR MONEY AT RISK ANALYSIS MODEL FOR GREEN BATCHING PLANT COST PERFORMANCE BASED ON NRMCA ASSESSMENT Nur Rohman, Muhammad; Husin, Albert Eddy
Journal of Mechanical Engineering and Applied Technology Vol. 2 No. 2 (2024): VOLUME 2 ISSUE 2 YEAR 2024 (JULY 2024)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v2i2.5633

Abstract

The current green concept trend in Indonesia is contributing to the advancement of sustainability across all industries, including the construction materials sector. The concrete business is crucial because it provides the fundamental components for concrete, which is a critical role it performs in the building process. Throughout the production process, ready-mix concrete has a very negative effect on the environment. Planning and constructing a green concept will be 10-20% more expensive than conventional development. Researchers will use the value for money (VfM)-at-risk analysis model technique to cost-effectively apply the concept of the green concrete industry to statistical analysis and case studies. To improve cost performance, this research updates the knowledge on the green concept for concrete industrial objects and searches for factors that affect its application using partial least square (SEM-PLS) analysis and green concept modeling based on the value for monet at risk analysis model. "10 factors that influence the performance of green costs in the concrete industry" were identified by the research, and they include the following: the risk analysis model, the planning stage, internal costs, production, value for money, the bidding stage, the implementation stage, product use, the operation stage, and maintenance. The application of the VfM-at-risk analysis model was able to increase the green cost performance by 8.66% with a return of 9 years and 2 months by gaining benefits as an environmentally friendly and sustainable concrete industry.
Karakteristik Beton Mutu FC 30 Dengan Menggunakan Limbah Peleburan Baja (Slag) Dan Pembakaran Batubara (Fly Ash) Nur Rohman, Muhammad; Simanihuruk, Bertinus; Dewita, Hikma
Prosiding TAU SNARS-TEK Seminar Nasional Rekayasa dan Teknologi Vol. 5 No. 1 (2025): Prosiding TAU SNARS-TEK Seminar Nasional Rekayasa dan Teknologi 2024
Publisher : Fakultas Teknik dan Teknologi - TANRI ABENG UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47970/snarstek.v2i1.771

Abstract

The use of slag and fly ash waste for building materials is not optimal, because it contains heavy metal oxides. With the issuance of Government Regulation no. 22 of 2021, dust resulting from burning coal from Steam Power Plants and other activities is not included as B3 waste. With research on the use of fly ash and slag to increase the compressive strength of concrete, research was carried out in the laboratory to determine the optimal composition for the use of slag and fly ash as a substitute for coarse aggregate and cement in concrete mixtures. By testing in the laboratory, results were obtained with variations in slag. 10, 20% and 30% with fly ash remaining at 10% as a concrete mixture by comparing with a normal concrete mixture. From the test results, the results obtained were that the addition of slag and fly ash waste could reduce the heat of concrete at FC 30, producing concrete compressive strength close to normal concrete compressive strength, namely 26.31 MPa for 7 days, 33.11 MPa at 28 days, and 39.61 MPa at 56 days with composition10% slag and 10% fly ash with the slump value achieved was 6 cm which makes it difficult to make concrete. The addition of 20% and 30% slag with 10% fly ash produces a compressive strength of concrete that is lower than the concrete compressive strength of FC 30. The appropriate composition to use is 10% slag as a substitute for coarse aggregate and 10% fly ash as a cement substitute
Analysis of Feeding, Drinking and Automatic Fecal Cleaning in Quail Cages Based on The Internet of Things Nur Rohman, Muhammad; Mahendra Sakti, Arya; Riandadari, Dyah; Nugroho, Aji
Indonesian Journal of Engineering and Technology (INAJET) Vol. 8 No. 1 (2025): September 2025
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajet.v8n1.p10-18

Abstract

Analyze the effect of the slope of the feeding valve on the consumption of quail feed to determine the optimal angle of inclination, evaluate the effect of the variation in the diameter of the timing pulley on the conveyor belt on the rotation speed and cleaning time of the cage manure to find the most effective pulley size, and study the effect of liquid viscosity on the filling time of the tank using a water pump in order to optimize the liquid filling system in the farm. An applied experimental method with a quantitative approach was used to test the influence of free variables. The data collected including feed consumption, fecal cleaning time, and drinking water filling time were analyzed numerically to obtain valid and objective results. The results showed that increasing the tilt of the feeding valve from 20°, 25°, to 30° increased feed consumption from an average of 348 grams to 725 grams. The timing diameter of the pulley has an effect on the rotational speed and cleaning time, with the small pulley (25 mm) resulting in the fastest cleaning (0.42 minutes) and the largest pulley (50 mm) the slowest (1.38). In addition, the viscosity of the liquid affects the filling time of the 10-liter tank, where ordinary water is the fastest (3.52 minutes), water with 5 vitamins is slightly longer, and the mixture of water with molasses and salt is the slowest (4.31 minutes). 
Analytical Critical Study of Qur'an Translation Nur Rohman, Muhammad
Edunity Kajian Ilmu Sosial dan Pendidikan Vol. 2 No. 4 (2023): Edunity : Social and Educational Studies
Publisher : PT Publikasiku Academic Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57096/edunity.v2i4.82

Abstract

Understanding the Qur'an is the main factor for the sustainability of the way of life of Muslims and the religion of Islam because Muslims are not only Arabs but also from other nations or are called 'jam (foreigners) outside of Arabia, as well as more and more people. The complex and religious problems of the ummah are due to cultural acculturation and the rapid development of science which is one of the main factors. The method of translating the Qur'an with differences of opinion is still one solution to understanding it, so the translation of the Qur'an slightly reduces the problem of understanding related to the text of the verse in it, although it is still something that cannot be decipher the deep meaning associated with the purposes hidden in it.