Journal of Engineering & Technological Advances

OVERVIEW OF RECYCLING RUBBER TIRE AS AGGREGATES IN CONCRETE: AN APPROACH FOR SOLID WASTE MANAGEMENT

2022-12-06T03:23:27+00:00

The difficulties related to non-biodegradable waste management raise the danger of environmental and health issues since millions of worn rubber tires are discarded yearly. Over the past several years, the building industry has been compelled to use this material combined with cement-based products due to the material's accessibility and vast manufacturing volume. Due to its promising properties, including enhanced ductility, damping ratio, and vibration resistance, recycling used tire rubber as a partial replacement of natural stones in concrete is a topic of intense research. Conversely, the rubber aggregator reduces the mechanical characteristics and workability of the resulting concrete mixtures. This study reviews the feasibility of using shredded rubber tire waste as a partial replacement for traditional aggregates in concrete. The properties of the rubberized concrete are discussed with respect to various ratios of rubber tire waste and traditional aggregates. The results of previous studies showed that using rubber tire waste as an aggregate in concrete significantly reduces the mechanical properties of the concrete, including its compressive strength, tensile strength, and flexural strength. On the other hand, using rubber tire waste as an aggregate reduces the weight of the concrete, which may have potential benefits for structural design. Overall, the study suggests that recycling rubber tire waste as an aggregate in concrete is a viable approach for solid waste management and can also provide environmental and economic benefits.

INTELLIGENT BUILDING SYSTEM: A STUDY ON EVALUATION OF INFLUENCING FACTORS FOR SUSTAINABLE DEVELOPMENT IN PRIVATE UNIVERSITIES IN KLANG VALLEY

2022-07-04T02:33:51+00:00

This project is carried out to study the evaluation of influencing factors for sustainable development with intelligent building systems in private universities in Klang Valley. An intelligent building system can be defined as a building automation system that is integrated into the physical plant and building facilities and linked with the corporate systems to ensure the building management system can be brought up to date on the building operating cost, and energy efficiencies of the building. Questionnaire surveys were distributed to collect the data. Descriptive analyses were used to analyse the data using Statistical Package for Social Science (SPSS). The study showed that the main barriers to implementing Intelligence Building System (IBS) were the high initial cost. The benefits of using IBS were reduced waste, pollution, and environmental degradation. The potential chances in implementing IBS were using sustainable building materials, and recycling and reuse of materials. The ways to deal with these issues are to learn, understand, and accept, then apply the intelligent building system in the campus and try to keep up with the latest technology and innovation to increase the quality of life and productivity of the people like lecturers, students, admin staffs who are using the campus every day.

DEVELOPMENT OF AUTONOMOUS ASSISTIVE ROBOT FOR HEALTHCARE APPLICATION

2023-01-09T09:45:00+00:00

This project mainly focuses on an autonomous assistive robot for healthcare application that is developed to dispense medications to the individual patients in the patient care facility. This autonomous line-follower robot is able to detect and follow the line drawn on the floor while driving through the facility with the ability to stop when it faces obstacles. The source of energy supply to the whole robot is fed from the power supply through the ESP32 microcontroller that is programmed using C++ with infrared sensors connected to the board for sensing the drawn line. The ultrasonic sensors are used to detect any obstacles on their way and put the robot at a halt condition with an alarm indicating the obstacle occurrence. The robot will stop at the junction to dispense the medicine for 10 seconds before proceeds to the next station. After the medicine has been dispensed, a confirmation message will be sent out from CallMeBot API in Telegram to acknowledge the medical staff on the successful delivery of the medicine to each patient. The result presented the experimental data on the path line application and the obstacle detection to demonstrate the efficiency of the application.

INFLUENCE OF OPERATING CONDITIONS ON THE ULTRAFILTRATION TREATMENT OF BRILLIANT BLUE BATIK DYE

2023-01-26T03:45:41+00:00

The batik industry produces a large amount of wastewater that degrades water quality. Ultrafiltration (UF) is an efficient and low-pressure filtration method for water treatment, particularly for dye wastewater. This study aims to analyze the efficiency of commercial UF polyethersulfone (PES) membranes in the treatment of brilliant blue batik dye. The effect of operating conditions involving operating pressure (2, 3, 4 bar) and pH (3, 6, and 9) of dye solution at 50 mg/L on membrane performance was evaluated via a crossflow filtration system. Higher dye rejection was obtained at close to neutral pH and higher pressure. On the other hand, the fouling propensity was mainly affected by pressure and the membrane experienced a slower flux decline at lower pressure. This is owing to the synergistic interaction between size sieving and electrostatic repulsion. The optimum membrane performance was achieved at pH 6 and 3 bar. Future studies can work on real dye wastewater produced from the batik industry.

AN ANALYSIS OF THE DEVELOPMENT OF THE INDUSTRIAL ESTATES FROM THE LEADING ECONOMIC SECTORS DUE TO THE POTENTIAL INCREASE IN USAGE OF THE TRANS SUMATERA TOLL ROAD: A CASE STUDY OF THE NORTHERN SUMATERA REGION

2022-12-06T02:18:18+00:00

In order to increase economic growth, the Government of Indonesia is making efforts to accelerate infrastructure projects, one of which is the Trans Sumatera Toll Road. This is expected to help increase economic growth and connectivity on the Sumatera island. Sumatera Island is an area that has abundant natural resource potential. However, this potential has not been fully developed by considering the construction of the Trans Sumatera Toll Road. This study aims to develop a leading sector-based industry in the Northern Sumatera Region to increase the potential use of the Trans Sumatera Toll Road. Determination of industrial focus is carried out using location quotient analysis by considering regional development indicators in the form of Gross Regional Domestic Product distribution, sector potential and the Human Development Index. Estimated initial cost required is calculated by benchmarking approach and price survey. The results show that the development of leading sector-based industries in the Northern Sumatera Region is estimated to require initial costs of USD 1,025.53 million for the rice processing industry, integrated coconut processing, food processing, and palm oil processing. The results of this study can be an input for the Indonesian government to increase the potential use of the Trans Sumatera Toll Road through industrial development of leading economic sectors in each region.

EFFECTS OF FIBRE ORIENTATION ON TENSILE PROPERTIES OF JUTE FIBRE REINFORCED COMPOSITES

2023-02-27T23:44:03+00:00

Natural fibres have many advantages over synthetic fibres such as low cost, low density and biodegradable. Jute fibre is an example of natural fibre that is affordable and easily attainable. In this study, the effects of fibre orientation on the mechanical properties of jute reinforced epoxy composite (JFRC) were analysed. JFRCs were fabricated using hand lay-up method with the fibre orientation of (0°/0°/0°/0°), (0°/45°/0°/45°), and (45°/45°/45°/45°). The tensile strength, yield strength and elongation of the composites were investigated using the universal tensile machine. Samples with 0°/45°/0°/45° orientation shows the highest tensile strength of 32.079 GPa, while the sample with fibre orientation 0°/0°/0°/0° shows the lowest tensile strength of 30.249 GPa.