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GLYCERINE PITCH AS AN EXTENDER FOR ASPHALT BINDER PEN 60/70

December 13, 2023/0 Comments/in Prosiding 2022/by icsbeuii

A V R Sihombing^[1]^*, R Utami¹, A K Soemantri¹, A Febriansya¹, and R P Sihombing²

¹ Department of Civil Engineering, Politeknik Negeri Bandung, Jln.Gegerkalong Hilir, Ciwaruga, Bandung, Indonesia

²Department of Architecture, Institut Teknologi Nasional Bandung, Jl. PH.H. Mustofa No.23, Bandung, Indonesia

[1]^* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art14

ABSTRACT

Glycerine pitch (GP) is a by-product from the refining process of Crude Glycerol from the palm oleochemical industry which in its processing requires a cost of USD 400/ton. In Indonesia, it is estimated that the production of GP reaches 35 thousand tons/year. This study aims to examine the potential of GP as an extender for asphalt binder pen 60/70, according to the Fourier transform infrared spectroscopy (FTIR) test to see its chemical structure and asphalt binder rheology in the laboratory. The materials used in this research are pen 60/70 and GP from the oil palm oleochemical industry in Bekasi Regency which are produced from the hydrolysis route. GP was added to asphalt pen 60/70 with variations in the percentage of GP to the weight of asphalt pen 60/70 were 0%, 15%, 20%, and 25%. Based on the results of the FTIR test, it is known that GP belongs to a polyglycerol compound which is similar to the long compound in petroleum asphalt. The addition of GP up to 25% to asphalt-based rheology still meets the characteristics of pen 60/70 with a penetration value of 64.14 dmm, softening point 52 C, viscosity 408.52 cSt, ductility > 100 cm and density 1.061.

Keywords : Glycherine Pitch; Ashpalt; FITR

REFERENCES

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S. Tang, (2010), “Asphalt modification by utilizing bio-oil ESP and tall oil additive”.
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RIVER WATER QUALITY MODELING BASED ON DO AND BOD PARAMATERS USING QUAL2KW SOFTWARE (CASE STUDY : WINONGO RIVER, SPECIAL REGION OF YOGYAKARTA)

December 13, 2023/0 Comments/in Prosiding 2022/by icsbeuii

R Rahmi^[1], N Marlina^2*, and S Rahmawati²

¹ Department of Environmental Engineering, Faculty of Civil Engineering and Planning, Universitas Islam Indonesia, Kaliurang KM 14.5, Sleman Yogyakarta, 55584, Indonesia

² Environmental Risk Analysis Laboratory, Department of Environmental Engineering ,Universitas Islam Indonesia, Kaliurang KM 14.5, Sleman Yogyakarta, 55584, Indonesia

[1]^*Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art13

ABSTRACT

The location of the study was on the 46.93 km Winongo River which passes through the Sleman Regency, Yogyakarta City, and ends in Bantul Regency. The Winongo River receives sources of pollutants such as domestic waste, agricultural waste, and fishery waste so river pollution occurs. The purpose of this study is to analyze the water quality of the Winongo River with point source and nonpoint source pollutant sources and obtain alternative strategies for Winongo river water quality management from the results of Qual2kw modeling simulations that can increase DO concentration and reduce BOD concentration. Based on the results of the study showed that the occurrence of pollution in the Winongo River, as evidenced by the average BOD concentration that exceeded the class II quality standard of 4.45 mg / L and the concentration of 5.38 mg / L. Simulation results of pollutant load modification and local oxygenation simulations were effective in increasing DO concentrations in the Winongo River. Meanwhile, the simulation of local oxygenation and simulation of modification of pollutant loads are effective in reducing BOD concentrations in the Winongo River.

Keywords : River Water; DO and BOD Parameters; Software

REFERENCES

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Q. S. Chen, X. H. Xie, Q. Y. Du, and Y. Liu, (2018), “Parameters sensitivity analysis of DO in water quality model of QUAL2K,” IOP Conf. Ser. Earth Environ. Sci., vol. 191, no. 1, doi: 10.1088/1755-1315/191/1/012030.
I. Rahmandani, D. Hendrawan, and W. Astono, (2021), “Determination of load capacity of BOD pollutant in Cisadane River with Qual2kw model & its effect on DO parameters,” IOP Conf. Ser. Earth Environ. Sci., vol. 894, no. 1, doi: 10.1088/1755-1315/894/1/012014.
A. Gholipour, E. Alamatian, and N. Foerstner, (2015), “Assessing of channel roughness and temperature variations on wastewater quality parameters using numerical modeling,” J. Appl. Sci. Environ. Manag., vol. 19, no. 1, p. 117, doi: 10.4314/jasem.v19i1.16.
D. Dyah, Agnes Novitasari Lestari; Sugiharto, Eko; Siswanta, (2013), “APLIKASI MODEL QUAL2Kw UNTUK MENENTUKAN STRATEGI PENANGGULANGAN PENCEMARAN AIR SUNGAI GAJAHWONG YANG DISEBABKAN OLEH BAHAN ORGANIK (Aplication of Qual2Kw Model to Determine the Strategy in Solving Gajahwong River Water Pollution Caused by Organic Matter),” J. People Environ., vol. 20, no. 3, pp. 284–293, doi: 10.22146/jml.18496.
W. D. Nugraha, (2007), “Analisis Pengaruh Hidrolika Sungai Terhadap Transport BOD dan Do dengan Menggunakan Software Qual2E (Studi Kasus Di Sungai Kaligarang, Semarang ),” J. Presipitasi, vol. 2, no. 1, pp. 66–70.

GEOELECTRIC METHODS FOR GROUNDWATER EXPLORATION IN THE FOOD ESTATE AREA OF CENTRAL SUMBA REGENCY, EAST NUSA TENGGARA, INDONESIA

December 13, 2023/0 Comments/in Prosiding 2022/by icsbeuii

D A Dayani^1,2, W Wilopo^1*, I Azwartika²

¹Department of Geological Engineering, Faculty of Engineering, Gadjah Mada University, Yogyakarta 55281, Indonesia

²Ministry of Public Works and Housing, Indonesia

[1]^* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art12

ABSTRACT

Groundwater is one water source to meet the needs of humans, animals, and plants. The groundwater potential of an area is usually difficult to determine because it is below the ^[1]surface. The Indonesian government has a program to develop a food estate in Central Sumba Regency; however, the availability of surface irrigation water is limited. Therefore, the assessment of groundwater potential was conducted. In this study, the evaluation of groundwater potential was carried out using geophysical methods and a hydrogeological survey. The resistivity of subsurface rocks was measured in 20 VES points by Schlumberger configuration. The area of the food estate in Central Sumba is mainly composed of limestone that forms a karst landscape. The groundwater level from the existing well is around 2-16 meters from the surface. The potential of rock as an aquifer is limestone with a resistivity value between 34 -7013 Ωm. There are two types of aquifers in the study area: unconfined and confined aquifers. Unconfined aquifers are found at a depth of 2-7 meters, while confined aquifers are found at depths of 11-120 meters. The distribution of aquifers is more in the western part of the study area.

Keywords : Geolectrical Methods; Groundwater; Food Estate

REFERENCES

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SUSTAINABLE APPROACH TOWARDS URBAN RIVERFRONT DEVELOPMENT : A CASE STUDY OF MULA-MUTHA RIVER, PUNE, MAHARASHTRA

December 13, 2023/0 Comments/in Prosiding 2022/by icsbeuii

A V Kumbhre^[1]^*, J Barman², S Bharule³

¹Research Scholar, Department of Architecture and Regional Planning, Indian Institute of Technology Kharagpur, West Bengal, India – 721302

²Professor, Department of Architecture and Regional Planning, Indian Institute of Technology Kharagpur, West Bengal, India – 721302

³Assistant Professor, Department of Architecture and Regional Planning, Indian Institute of Technology Kharagpur, West Bengal, India – 721302

[1]^* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art11

ABSTRACT

Rivers play a vital role in enhancing the identity of any city. Similarly, Mula, Mutha, and Mula-Mutha rivers are the identity of Pune city. When we look at the rivers of Pune closely, we will find the horrendous scenario. The major issues with the rivers of Pune are river flooding, river pollution, partial dry riverbeds, underutilized riverbanks, slum encroachment, and inaccessibility. These rivers are in a vulnerable state due to rapid urban growth. The unplanned growth of Pune city has degraded the quality of its river. The overall perspective towards the river has changed and the city is showing its back to its rivers. These kinds of scenarios have raised challenges for Pune city which is affecting the lives of its citizens. Therefore, we should investigate these issues closely and come up with the best possible compatible solutions for retaining the identity of the city and enhancing the quality of life. The riverfront development along these rivers can overcome these issues and integrates socio-cultural, economic, and environmental activities which are existing along the rivers of Pune.

Keyword : Sustainable; Development; Urban Riverfront

REFERENCES

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MODIFICATION OF BLASTING GEOMETRY TO INCREASE BLASTING EFFECTIVENESS IN QUARRY

December 13, 2023/0 Comments/in Prosiding 2022/by icsbeuii

B Sulistiyono^[1]^*, F Nugraheni², M A Wibowo³, A Musyafa²

¹ PT. Wijaya Karya

² Universitas Islam Indonesia

³Universitas Diponegoro

[1]^* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art10

ABSTRACT

It is thought that a technique for carrying out blasting operations for rock extraction must be both effective and secure. It is intended that the blasting will be both safe and able to meet the needs of the stockpile material because the blasting area is adjacent to residential areas. This study intends to determine the cost and duration of the rock excavation work by blasting at the Trenggalek Tugu Dam Construction Project, as well as the effectiveness brought about by the implementation of modified blasting geometry. The inquiry was supported by descriptive and comparative methodologies. For this study, both quantitative and qualitative data were required. Quantitative data was gathered using working drawings, tool specifications, and material specifications; qualitative data was gathered using work procedures, specifications, and islands for related jobs. Quantitative information is obtained through the analysis of papers written by consultants and service providers. To acquire qualitative power, interviews with subject-matter experts and literature research were conducted. Because the work can be done more rapidly than with the prior geometry and because doing so has a lower cost analysis, the results reveal that using the modified geometry is more cost-effective than using the prior blasting geometry. Utilizing a combination of blasting geometry using the CJ Konya method and ICI-Explosive, there was a 9.3% acceleration in task execution and a 1.133% cost efficiency of the contract value (Trial & Error).

Keywords: Blasting, Construction; Cost-effective; Geometry

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BRACKISH WATER MAPPING BASED ON WATER QUALITY DATA AND GEOELECTRICAL SURVEY : CASE STUDY IN THE SHALLOW GROUNDWATER OF TEGAL CITY

December 13, 2023/0 Comments/in Prosiding 2022/by icsbeuii

T R Puspita^[1]^,2*, D P E Putra¹, A H Rafsanjani¹, and R Farjrina ¹

¹ Department of Geological Engineering, Faculty of Engineering, Universitas Gadjah Mada

² Ministry of Public Work and Housing

[1]^* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art9

ABSTRACT

Salty water in the aquifer influences changes in groundwater quality may cause by pumping activities and/or natural phenomena. This paper reported the result of salty water mapping in the shallow groundwater of Tegal city. The EC values of groundwater in the study area ranges between 510 µS/cm to 7610 µS/cm, and TDS values are between 300 mg/L to 2450 mg/L. The geoelectrical measurement on study area reveals a very low resistivity layer of 0.307 Ùm at a depth of 2.87 to 12 meters, indicating brackish water. Based on the EC and TDS also geoelectrical survey, a map of salty water is produced and shows that in shallow groundwater of Tegal City, brackish water appears in the middle part of City and northeast part near the coastal area.

Keywords : Water mapping; Water Quality Data; Geoelectrical

REFERENCES

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