Journal of Mechanical and Construction Engineering (JMCE)

Jhama Brick in Construction: A Sustainable Alternative

2024-04-21T04:25:54+00:00

This research project aimed to assess the feasibility and potential advantages of substituting a portion of the coarse aggregate in concrete with Jhama brick aggregates. With concrete being a fundamental construction material, the selection of coarse aggregates significantly impacts its properties. Traditionally, natural resources like gravel and crushed stone are utilized, but concerns regarding resource depletion and environmental impact have spurred interest in alternative materials. Jhama bricks, commonly used in construction across various regions, possess properties that make them promising candidates for replacing coarse aggregates in concrete partially. Laboratory experiments were conducted to evaluate the mechanical, dura- bility, and workability properties of concrete mixes containing different proportions of Jhama brick aggregates. The findings offer valuable insights into the viability of Jhama brick aggregates as a sustainable alternative to conventional coarse aggregates in concrete construction. This research has potential implications for reducing the environmental footprint of concrete production and promoting the utilization of locally available materials.

Impact of Jute Reinforcement on the Resilience at the Outermost Limits of Cohesive Black-top Geomaterials

2024-03-21T01:53:21+00:00

In this work, cohesion-less asphalt geo-material supported with multi-facets of geo-support as jute filaments have been contemplated. The current work is complet-ed on the unreinforced soil and jute fiber supported soil to research the strength and firmness limit of asphalt geo-materials utilizing California bearing ratio (CBR) test. The quantity of layers, ideal profundity and arrangement of the geo-support in geo-material are researched. The implant profundity of jute fiber, i.e., D/2, D/3 and D/4 in single, twofold, and significantly increase layers has been upgraded utilizing CBR values. A clever idea of firmness limit alongside entrance factor is acquainted with assess the strength of the unreinforced and jute-supported geo-material. The experimental outcomes exhibit that remembering jute fiber for single, twofold and triple layer builds the solidness limit of the dirt at the ideal profundity of D/4. The liquid limit at shifted input boundary fluctuates from 0.378 to 0.682 at most extreme entrance factor which shown an 80.42 % upgrade of solidarity in asphalt geo-material. The result of the current review gives a savvy answer for the strength improvement in cohesion-less soils for dike, subgrade, and asphalt development ad-vances.

Performance Evaluation of a 3.5 kW Diesel Engine Fueled with Blended Biodiesel of Mustard Oil

2023-08-10T09:24:12+00:00

In this investigation, methyl ester of Mustard oil was prepared by trans esterification using solid potassium hydro-oxide as catalyst and used in a 3.5kW single cylinder four stroke diesel engine. Tests were performed at different load conditions and the per-formance was analyzed for B5 to B30 blends of Mustard biodiesel and pure mineral diesel. It was concluded that the lower blends of biodiesel enhance the break thermal efficiency and reduce the fuel consumption. It is proved that the use of biodiesel (produced from Mustard oil) in compression ignition engine is a viable substitute to diesel.

Performance Evaluation of a 5 hp Diesel Engine Fueled with Blended Biodiesel of Benola Oil

2023-08-10T09:21:38+00:00

In this communication, methyl ester of Benola oil was prepared by transesterification using solid potassium hydro-oxide as a catalyst and used in a 5 hp single cylinder four stroke diesel engine. Tests were performed at different load conditions and the performance was analyzed for B5 to B30 blends of Benola biodiesel and pure mineral diesel. It was concluded that the lower blends of biodiesel enhance the brake thermal efficiency and reduce fuel consumption. It was also noticed that it reduces carbon pollution but slightly increases the NOx.

Design and Fabrication of FPV Racing Drone

2023-06-09T16:21:01+00:00

This research focuses on the designing aspects of a first-person view (FPV) Drone. An FPV drone is an unmanned aerial vehicle (UAV) that transmits Hawkeye's view to the ground control station. It's called a Hawkeye similar to the view that an eagle gets when it flies. It is also recognized for its dynamic behavior, the ease and flexibility of maneuvering. The response time of the FPV drone is quite remarkable for the purpose it serves. We have worked on the SP3 F3 racer Flight controller which is known for its extreme autopiloting and stability. Designing, developing, and simulating such a dy-namic drone was a challenging task done with ease. It has a range of about 3 KM and a flight time of 11-12 minutes on (not so vigorous) flying conditions.

Application of Digital Twin in Structural Health Monitoring of Civil Structures: A Systematic Literature Review Based on PRISMA

2024-02-08T04:44:42+00:00

Structural Health Monitoring (SHM) systems are critical for ensuring the safety and longevity of structures. Digital twin technology has emerged as a promising tool to improve the accuracy and efficiency of SHM systems. This paper presents a systematic literature review based on PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) on the applications of digital twin for SHM of civil structures. And this systematic literature review examines the current trends and developments in the application of digital twin technology in SHM systems for structures. The review identified 45 relevant articles published between 2010 and 2023 that covered various applications of digital twin in SHM systems, including buildings, bridges, wind turbines, trains, and gas turbines. Key themes identified from the literature review included the integration of physical models and machine learning algo-rithms, the use of distributed sensor networks, and the importance of real-time data analysis for effective SHM. The findings suggest that digital twin technology has the potential to significantly improve the accuracy and efficiency of SHM systems, but further research is needed to develop more advanced and integrated Digital Twin-Based SHM systems for different types of civil structures.

Performance of Concrete Materials Containing Recycled Aggregate from Construction and Demolition Waste in India

2023-10-11T11:28:04+00:00

The recycling and reuse of waste concrete in India have gained significant momentum as sustainable construction practices are increasingly prioritized. This abstract provides a concise overview of the current state of recycling and reuse of waste concrete in India, with a focus on the relevant provisions of the Indian Standard (IS) codes. In-dia produces a substantial amount of construction and demolition waste, including concrete. The IS codes, such as IS 2386 Part 1:1963, IS 2386 Part 3:1963, and IS 456:2000, play a crucial role in guiding the testing, evaluation, and usage of recycled concrete materials. IS 2386 Part 1:1963 outlines testing procedures for aggregates, including recycled aggregates derived from waste concrete. These tests assess properties like particle size distribution, specific gravity, water absorption, and crushing strength to ensure the quality and suitability of recycled aggregates. IS 2386 Part 3:1963 provides methods for testing the compressive strength of concrete cubes made with recycled aggregates. This allows for evaluating the structural performance of recycled concrete. IS 456:2000, the Code of Practice for Plain and Reinforced Concrete, includes provisions for using recycled aggregates in concrete. It establishes maximum limits for replacing natural aggregates with recycled aggregates, ensuring the durability and strength of the resulting concrete. While the IS codes provide essential guidance, challenges remain, including awareness among stakeholders, standardized testing procedures, and the development of appropriate recycling infra-structure. In conclusion, adherence to IS codal provisions supports the recycling and reuse of waste concrete in India, promoting sustainable practices and contributing to a greener construction industry.