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Journal of Green Science and Technology
Published by Universitas Swadaya Gunung Jati
ISSN : 25981277     EISSN : 26213966     DOI : http://dx.doi.org/10.33603/jgst
Core Subject : Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering
Journal of Green Science and Technology (JGST) published since 2018 by Faculty of Engineering Universitas Swadaya Gunung Djati (UGJ) Cirebon with p-ISSN 2598-1277 and e-ISSN 2621-3966. JGST is a peer reviewed journal published triannualy in January, April, and September.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 121 Documents
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THE EFFECT OF THE USE OF GBFS AS A MEDIUM AGGREGATE SUBSTITUTION ON THE PERFORMANCE OF THE AC-WC ASPHALT MIXTURE Panji Marshando
Journal of Green Science and Technology Vol 6, No 1 (2022): VOL 6, NO 1 (2022): JOURNAL OF GREEN SCIENCE AND TECHNOLOGY VOL. 6 NO. 1 MARCH 2
Publisher : FAKULTAS TEKNNIK UNIVERSITAS SWADAYA GUNUNG JATI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v6i1.6809

Abstract

The massive use of natural materials in major road infrastructure frequently disrupts the sustainability of the ecosystem in the environment. A solution for using other materials is needed to minimize the impact of using these natural materials. GBFS (Granulated Blast Furnace Slag) is waste from blast furnace combustion of iron and steel material in granular form, which characteristically can be used as a substitute for medium aggregate asphalt mixture material. The study was conducted by several testing, such as GBFS material testing, AC-WC asphalt mixture characteristic test using Absolute Density Method, and performance testing on AC-WC asphalt mixtures, based on its structural performance and dunctional performance with the percentage of GBFS as medium aggregate variation at 0%, 50%, 75%, and 100%. The study results show that the utilization of the percentage of GBFS as a medium aggregate substitution by 75% improves functional performance and structural performance of AC-WC asphalt mixture.Keyword: GBFS, Asphalt Mixture, AC-WC, Medium Aggregate.
ANALYSIS OF HEAVY METAL CONTENT IN SALT (CASE STUDY OF SALT FIELD, LOSARANG DISTRICT, INDRAMAYU REGENCY) Mutiara - Salsabiela
Journal of Green Science and Technology Vol 5, No 2 (2021): VOL 5, NO 2 (2021): JOURNAL OF SCIENCE AND TECHNOLOGY VOL. 5 NO. 2 SEPTEMBER 202
Publisher : FAKULTAS TEKNNIK UNIVERSITAS SWADAYA GUNUNG JATI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v5i2.5678

Abstract

Salt is a staple food needed for human life, especially for industrial and household consumption. The raw material for making the salt comes from sea water which is very susceptible to contamination by contaminants in the form of heavy metals. The presence of heavy metals in salt will be harmful to human health when consumed. The study was conducted to determine the quality of salt free from heavy metal contamination and suitable for consumption. in Losarang District, Indramayu Regency. This research was conducted by descriptive method. Data collection techniques were carried out through observation and interviews. The samples tested were salt produced with TUF technology and Geoisolator. The sampling technique refers to SNI 19-0428-1998 regarding the instructions for taking solid samples where the sample is taken using a spear and inserted into a plastic clip that has been labeled with the name and code. The parameters tested were heavy metals consisting of Lead (Pb), Cadmium (Cd), Mercury (Hg) and Arsenic (As). The method of testing the content of heavy metals in salt in this study used the AAS (Atomic Absorption Spectrophotometer) method which was carried out in the
LOW CARBON CONCRETE: CEMENT REPLACEMENT UTILIZING FLY ASH Dimas Langga Chandra Galuh; M Afif Shulhan; Iskandar Yasin; Sukiyono Sukiyono
Journal of Green Science and Technology Vol 6, No 1 (2022): VOL 6, NO 1 (2022): JOURNAL OF GREEN SCIENCE AND TECHNOLOGY VOL. 6 NO. 1 MARCH 2
Publisher : FAKULTAS TEKNNIK UNIVERSITAS SWADAYA GUNUNG JATI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v6i1.6495

Abstract

Reducing the cement content in concrete is the need for environmental sustainability, as cement produces a significant carbon emission. This work aims to study the effect of partial replacement of the cement utilizing fly ash at the various percentage of substitution by investigating the physical characteristic of concrete ingredients, compressive testing at various curing age, workability, and material cost reduction. Fly ash used in this research is categorized as type F, which obtained from Jepara powerplant. Along with fly ash, ordinary pozzolan cement (OPC) from Semen Gresik used as binder material. The fine and coarse aggregates quarried consecutively from Magelang Regency and Kulon Progo Regency, Indonesia. All the constitutes being observed on specific gravity, gradation test, clay lumps content, and abrasion resistance. The job mix formula developed adopting Indonesian Standard based on the physical data obtained previously, resulting in five levels of cement replacement which is 0%, 15%,20%, 25%, and 30% compared to cementitious weight. Concrete cylinder specimen having 150 mm on the diameter and length of 300 mm, tested at various age (7,14, and 28 days) to obtained compressive strength and strength development during curing age. The current works remarks that all level of replacement obtained a good agreement with targeted compressive strength (25 MPa) at the age of 14 days. However, the more fly ash supplemented in the mixture, strength development possesses a slower rate and a slight declining on workability. Eventhough the slump value still comply with the requirement given by the Indonesian Standard.
ANALYSIS OF DRAINAGE CHANNEL CAPACITY IN CIREMAI RAYA, LARANGAN SUB-DISTRICT OF CIREBON CITY Akbar Winasis; Ohan Farhan; Heri Mulyono
Journal of Green Science and Technology Vol 5, No 1 (2021): JOURNAL OF SCIENCE AND TECHNOLOGY VOL. 5 NO. 1 MARCH 2021
Publisher : FAKULTAS TEKNNIK UNIVERSITAS SWADAYA GUNUNG JATI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v5i1.4907

Abstract

The perumnas gunung area is one of the areas in the Larangan sub-district, Harjamukti Subdistrict, Cirebon City, whose drainage system greatly disturbs the activities of the population in Cirebon City because when heavy rain causes the high volume of water in the drainage so that it comes out to the highway and is very disturbing it can also cause congestion.To solve the problem of inundation and flooding, it requires maximum rainfall data, population density data and hydraulic data from direct observation at the research location. From the rainfall data, the intensity of the rainfall is calculated, then the standard deviation is calculated to get the return period value using the Gumble formula. From the calculation of the Return Period, the calculation of the flood discharge is carried out using a rational method and calculating the discharge of the existing channel. Calculation of the capacity of the existing channel discharge is carried out by calculating the discharge of rainwater and discharge of household wastewater.From the calculation of Hydrology and Hydraulics, the value of Rainfall Intensity is 46.632 mm / day, the overall channel discharge = 0.603 m3 / s, the calculation of the total discharge from household wastewater and rainwater discharge for the 2-year return period is 0.0076 m3 / s. . From the calculation results, the authors conclude that the dimensions of the existing canal can still accommodate the flow of rainwater and household wastewater. The solution to overcome flood inundation on Jalan Ciremai Raya, it is necessary to normalize the drainage channel so that the drainage channel can function properly.
AUTOMATIC DOOR SIMULATOR DESIGN BASED ON ARDUINO UNO USING PROTEUS SOFTWARE Rindi Wulandari
Journal of Green Science and Technology Vol 5, No 2 (2021): VOL 5, NO 2 (2021): JOURNAL OF SCIENCE AND TECHNOLOGY VOL. 5 NO. 2 SEPTEMBER 202
Publisher : FAKULTAS TEKNNIK UNIVERSITAS SWADAYA GUNUNG JATI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v5i2.5710

Abstract

In this pandemic era, doors in public places are one of the objects that can be an intermediary for the transmissionof the Covid-19 virus. That's why various kinds of developments in the field of technology are designed to provide an alternative in avoiding the transmission of the Covid-19 virus through doors in public places.The purpose of this study is to design an Arduino Uno-based automatic door simulator using Proteus software. The sensor used in this system is a PIR (Passive Infra Red) sensor. The way the system works is that when the PIR sensor detects someone's movement, the Data OUT Pin will be HIGH. Because this pin is connected to the Arduino, it will detect this HIGH Signal and detect that someone is approaching the door and will provide input to the DC motor, then the DC motor will move to the right or left to pull the door. From the simulation results, the delay between sensor readings and the movement of the DC motor is about 3 to 5 seconds.
THE EFFECT OF WATER RESISTIVITY ON THE CORROSION RATE OF STEEL PLATE IRRIGATION IN LABORATORY puji astuti ibrahim
Journal of Green Science and Technology Vol 6, No 1 (2022): VOL 6, NO 1 (2022): JOURNAL OF GREEN SCIENCE AND TECHNOLOGY VOL. 6 NO. 1 MARCH 2
Publisher : FAKULTAS TEKNNIK UNIVERSITAS SWADAYA GUNUNG JATI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v6i1.6479

Abstract

Corrosion is one of the processes of metal damage or degradation due to redox reactions between a metal and various substances in its environment that produce undesirable compounds. In the water one of the environmental parameters is water resistivity. By knowing the connection between water resistivity and corrosion rate, it is possible to monitor laboratory tests with water environments that have different levels of corrosiveness. Therefore, it is necessary to conduct an analysis to determine the effect of water resistivity on water corrosivity, understand the factors that influence the corrosion rate and calculate the corrosion rate of the irrigation gate steel plate on the water environment. This analysis uses a laboratory scale, analysis with talagasari irrigation water media, domestic wastewater, PDAM water and dead river estuary water. All water media used have a high level of corrosiveness. The factor that causes the low resistivity value is the large amount of inorganic minerals containing metal in the water so that at low resistivity values the corrosion rate increases. In the results of this laboratory analysis, it is proven that the more acidic the water medium, the faster the corrosion rate and the more alkaline the water medium, the slower the corrosion rate.
ANALYSIS OF THE CARRYING CAPACITY OF URBAN DRAINAGE DIMENSIONS Awliya Tribhuwana; Fathur Rohman; Ohan Farhan
Journal of Green Science and Technology Vol 5, No 1 (2021): JOURNAL OF SCIENCE AND TECHNOLOGY VOL. 5 NO. 1 MARCH 2021
Publisher : FAKULTAS TEKNNIK UNIVERSITAS SWADAYA GUNUNG JATI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v5i1.4954

Abstract

The rain that fell in the city of Cirebon, especially the drainage on Jalan Pemuda, could not accommodate and drain the water so that it could create puddles on the roads and surrounding areas. Hourly rain intensity, planned flow rate and channel cross-sectional dimensions are the first steps for flood prevention. Hydrological analysis is used to calculate the discharge capacity of the drainage plan. The results were then analyzed the dimensions of the channel, the drainage ability to accommodate the falling rainwater where Qs is bigger than Qp. the channel discharge has not been able to accommodate the Q plan in the channel so that there will be a runoff of 17.759%. So to anticipate runoff, it is necessary to have a channel improvement plan of 33.477%. In addition to channel improvement solutions, arrange and define the boundaries of water storage areas by measuring and mapping boundaries and issuing regulations that prohibit or limit the construction of buildings that can reduce the ability of areas to store and absorb rainwater by referring to the basic building coefficient (KDB) permitted as stated in the RT/RW.
STUDY OF THE EFFECT OF THE USE OF ADDITIONAL ADDITIVES DAMDEX AND BESTMITTEL ON THE COMPRESSIVE STRENGTH OF CONCRETE f'c 20 MPa. Dina Heldita
Journal of Green Science and Technology Vol 5, No 2 (2021): VOL 5, NO 2 (2021): JOURNAL OF SCIENCE AND TECHNOLOGY VOL. 5 NO. 2 SEPTEMBER 202
Publisher : FAKULTAS TEKNNIK UNIVERSITAS SWADAYA GUNUNG JATI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v5i2.5821

Abstract

Under normal circumstances, the maximum strength of the concrete will be reached at the age of 28 days, but to achieve the initial maximum strength of the concrete can be done in 2 ways, namely the use of Portland cement or the use of mineral additives or chemical admixtures. Another purpose of the use of admixture is the fulfillment of a short concrete execution time but the performance of the concrete is maintained.This study aims to determine the comparison of the compressive strength (N/mm2 unit) of normal concrete with concrete that uses Damdex and Bestmittel added materials, the test object used is cylindrical with the percentage addition of Damdex 2% and Bestmittel 0.2% of the weight of cement with composition the mixture used using the Job Mix Formula f'c 20 MPa for the Block B/F Heavy Rehab work project, Kotabaru District Prosperity Market Complex, namely for 1 m3 using 442.00 kg of cement, 681.79 kg of fine aggregate, 1065.72 kg of coarse aggregate , 215 liters of water. With the age of the tested concrete the compressive strength is 14 and 28 days.The results of the normal concrete compressive strength test at 14 and 28 days on average were 20.33 MPa and 22.19 MPa from the design compressive strength (f'c) of 20 MPa. Meanwhile, for the mixture with 2% Damdex and Bestmittel 0.2% added materials at 14 and 28 days the average was 22.93 MPa and 20.76 MPa from the design compressive strength (f'c) 20 MPa..Keywords: Concrete Quality, Damdex, Bestmittel, Compressive Strength
USING DRONES FOR LANDFILL MONITORING AND PROJECTION CALCULATION Yackob Astor; Aditia Febriansya; Retno Utami; Muhammad Rizki Firdaus; Farhan Arradzumar Gustaman; Saepul Fariz
Journal of Green Science and Technology Vol 6, No 1 (2022): VOL 6, NO 1 (2022): JOURNAL OF GREEN SCIENCE AND TECHNOLOGY VOL. 6 NO. 1 MARCH 2
Publisher : FAKULTAS TEKNNIK UNIVERSITAS SWADAYA GUNUNG JATI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v6i1.6733

Abstract

ABSTRACT: Until now, monitoring the landfill volume in the Sarimukti landfills is calculated by the ratio of trucks converted from tonnage to volume based on the density of the landfill. The various truck specifications and the landfill density conversion process affect the tonnage value. This has an impact on the accuracy of the landfill volume calculation results. This research uses drones as the main tool for monitoring Sarimukti landfills by making a 3D map of the landfill in 2021 as a reference for calculating the volume of existing landfill. The analysis was carried out by comparing the existing landfill volume with the projected landfill volume in 2025 according to the operational period of the landfills. The results of the analysis show that the Sarimukti landfills can no longer accommodate landfill by 2023.Keywords: Drone, Landfill, Contour
ANALYSIS OF THE JALAWASTU AREA AS A SUSTAINABLE CULTURAL TOURISM Jafar Mukhlis; Stevie Louise Estella De Costa
Journal of Green Science and Technology Vol 5, No 1 (2021): JOURNAL OF SCIENCE AND TECHNOLOGY VOL. 5 NO. 1 MARCH 2021
Publisher : FAKULTAS TEKNNIK UNIVERSITAS SWADAYA GUNUNG JATI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v5i1.4968

Abstract

Cultural tourism offers culture in the form of tourist objects that are tangible or concrete, intangible or abstract, as well as those that are living culture and cultural heritage. The potential of the Jalawastu Area has unique cultural values such as traditional ceremonial events and traditions that are still being maintained. This study aims to see the Jalawastu Area as a cultural tourism destination in Brebes Regency. The research method used is a descriptive method that aims to describe or describe phenomena or relationships between the phenomena being studied systematically, factually, and accurately (Kusmayadi, 2000). In addition, the descriptive method is a way of analyzing comprehensive data in the framework of explaining the conditions or characteristics of an area that occur as a particular consideration according to Densin. Based on the results of the analysis, the conclusion is that the development of the tourism heritage area of the Jalawastu Cultural Village has great potential as a cultural tourism destination, and the aspect of the analysis and culture that is owned by the existence of the Jalawastu Cultural Village has a unique architecture encourages the creation of a unique and distinctive domestic image. If the Jalawastu Cultural Village is developed with good management and planning, it will encourage the formation of a tourism heritage area with the main attraction being a tourist attraction for traditional ceremonies and traditional arts as historical and cultural tourism. The research recommendations include: on the product side, improving quality in the packaging of cultural and artificial products in the tourism heritage of the Jalawastu Cultural Village in an attractive tour package, adding supporting activities such as the tangible and tangible potential of Brebes Regency in the tourism area of the Jalawastu Cultural Village as a symbol To introduce the Brebes area as a whole to domestic and foreign tourists, the program is to innovate for the heritage tourism attractions of the Jalawastu Cultural Village to make it more attractive.

Page 6 of 13 | Total Record : 121

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