Volume 12 | Issue 5 |

 Abstract

In civil engineering and construction, a piled raft foundation, also referred to as a raft with piles or a piled mat foundation, is one kind of foundation structure. It is frequently used to poor soil conditions, such as soft clay, loose sand, and extremely compressible soils. To increase load carrying capacity and settlement, the piled raft foundation combines the advantages of deep foundations and shallow raft foundations. It's crucial to keep in mind, nevertheless, that the design and building of PRF need for meticulous engineering study and consideration of site-specific factors, including soil conditions, structural loads, and foundation system behaviour. The study focuses on the PRF system's vertical load carrying capacity and settlement reduction under both eccentric and concentric stress on sand. To find out how different pile alignment and length affected the PRF's ultimate load, small-scale model tests are carried out. The study's findings suggest that the PRF system can minimize differential settlement and boost the raft's load bearing capacity by carefully placing the piles in optimized position. The study specifically aimed at how changing the pile's length to diameter (L/D) ratio affected their ability to support loads. The results of the research work indicate that strategical placing the piles in the PRF system improve the load bearing capacity and reduce the settlement.

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 Keywords

Piled raft foundation, cohesion less soil, Load improvement ratio

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 Abstract

Availability of conventional materials for concrete is cause for concern worldwide. In recent years significant global initiatives to use both local and waste materials in concrete has taken place. One of these materials is rice husk, which when incinerated under regulated conditions and if finely pulverized may be utilized as a substitution for cement in concrete. In order to understand the impact of Rice Husk Ash (RHA) on the mechanical and durability characteristics of concrete when used as a partial cement replacement, a thorough assessment of the relevant literature on Rice Husk Ash (RHA) is conducted. Due to its significant pozzolanic qualities, RHA has the ability to replace cement upto 30% without affecting the structural integrity of concrete. The main objective of this study is to find the optimum percentage of replacement of Rice Husk Ash based on compressive strength and flexural strength of concrete. Thus, the use of RHA as a partial alternative to cement in concrete can offer additional environmental benefits, such resource saving and the management of agricultural waste, while simultaneously encouraging a circular economy in the construction sector.

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 Keywords

Rice Husk Ash, Partial replacement, Optimum Percentage

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 Abstract

In this paper, concrete of grade M40 is studied by using Ground Granulated Blast furnace Slag (GGBS)(10%, 20%, 30% and 40%) and Rice Husk Ash (RHA) (5%, 7.5% and 10%) as partial replacement of cement and by using Quarry dust(0%, 15%, 30%, 45%, 60%, 75%, 90% and 100%) as partial replacement of sand. Compressive Strength properties are studied. Study is carried out in three phases and the optimum replacement level is found out.

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 Keywords

GGBS, RHA, Quarry Dust, Compressive Strength

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 Abstract

Curing of concrete is the process of maintaining satisfactory moisture content in concrete during its early stages to develop the desired properties. However good curing is not always practical in many cases the present study deals with the effect of polyethylene glycol (PEG)and poly-vinyl alcohol (PVA) on concrete and their contribution to strength which are carried out. The effect of admixtures in mechanical characteristic of concrete i.e., compressive strength, split tensile strength by varying the percentage of PVA and PEG-400 from 0% to 2.5% by weight of cement is studied for M30 grade of concrete and the optimum percentage of PEG and PVA in self-curing concrete with conventional concrete with water curing is compared. The optimum percentage with PEG is coated with PVA and strength analysis is done. Curing is one of the most important factors for achieving maximum desirable strength in concrete, concrete should be cured properly so that it is fully hydrated and loss of moisture inside the concrete should be reduced. Poly vinyl alcohol and polyethylene glycol-400 is locally available chemical which can be used as a self-curing agent in concrete so that moisture in the concrete can be maintained and concrete can be fully hydrated

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 Keywords

Self-curing concrete, polyethylene glycol, poly-vinyl alcohol, M30 grade

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 Abstract

This study presents a comprehensive comparison of thermal barrier coatings (TBCs) utilizing zirconia and environmental barrier coatings (EBCs) incorporating silicon carbide and aluminum oxide. Through rigorous experimental testing and computational analysis, key performance metrics including thermal insulation, erosion resistance, and durability are evaluated. The findings elucidate the distinctive strengths and weaknesses of each coating type, facilitating informed decision-making for optimal material selection in high-temperature applications

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PERFORMANCE COMPARISION OF TBC's & EBC's

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 Abstract

A significant amount of energy is wasted by vehicles when they pass over speed breakers due to friction. However, this energy can be used to generate electricity. In this project, we propose a smart speed breaker system that captures energy from vehicles and converts it into electrical power.

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Traffic Sign.

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 Abstract

Transforming non-motorized vehicles into motorized alternatives presents a compelling avenue for modernizing traditional transportation modes while upholding sustainability. This study investigates the integration of electric propulsion systems into non-motorized vehicles to enhance their efficiency, range, and ease of use. By bridging the gap between conventional and modern transport systems, this study aims to offer eco-conscious solutions aligned with contemporary needs. Our primary objective is to demonstrate the feasibility and potential benefits of this conversion process, thereby unlocking new possibilities for personal and commercial transportation. This report details the methodology, technical aspects, challenges, and outcomes of the conversion process, aiming to contribute to the discourse on sustainable transportation solutions and inspire future developments in this transformative field.

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 Keywords

Non-motorized, Technical aspects, e-Bike.

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This paper discusses a new safety system for vehicles that integrates power window mechanisms with various sensors to enhance passenger safety in emergencies. The goal is to deploy the existing power window infrastructure to automate window operation in dangerous situations, facilitating a rapid and safe exit from the vehicle. The proposed system includes a control unit connected to multiple sensors, including tilt, water, air quality, fire, and gas sensors. These sensors monitor the vehicle's environment for signs of danger. The tilt sensor detects if the vehicle has rolled over or is at a severe angle, while the water sensor identifies submersion in water. The quality of the air sensor checks for harmful gases, and the fire and gas sensors alert to fire or high gas levels. If an emergency is detected, the control unit activates the electric window mechanism to open the windows, allowing passengers to exit safely. This system provides a cost-effective solution by utilizing existing power window technology, making it easier to implement in current vehicle designs. It adds an additional layer of safety, enabling quicker evacuation in emergencies. The integration of this system into vehicles can dramatically decreases the likelihood of accidents or other hazardous situations. In summary, this safety system utilizing power window mechanisms and various sensors shows great potential approach for improving vehicle safety. By leveraging existing technology, it offers a practical and efficient solution to enhance passenger safety in emergency scenarios.

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 Keywords

Power Window Mechanism, Vehicle Safety, Emergency Sensors, Passenger Safety

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In this paper, Al-Mg-Si alloy has been used as the matrix material to develop metal matrix composites with silicon carbide particle particulates as reinforcement material. The different mesh size of SiC particles was chosen by varying wt.% (1%, 3% and 5%) and preparation was done through the stir casting method. Microstructure evaluation has been done for the formed composite material. Taguchi's technique was used to find the optimization, Analysis of Variance (ANOVA) and mathematical model were generated through regression method to validate the experimental results obtained for hardness.

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 Keywords

ANOVA, Hardness, Matrix, Composite

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Creative Commons Attribution 4.0 and The Open Definition

 Abstract

An abstract of 3D printing could highlight its transformative impact on various industries and disciplines. It would likely mention its ability to fabricate intricate objects layer by layer from digital designs, offering unprecedented flexibility and customization. Additionally, the abstract might discuss the diverse range of materials used in 3D printing, from plastics and metals to biomaterials, enabling applications in fields such as aerospace, healthcare, automotive, and consumer goods. Furthermore, it might touch upon emerging trends such as large-scale construction and the integration of artificial intelligence to optimize printing processes. Overall, the abstract would emphasize 3D printing's potential to revolutionize manufacturing, design, and innovation across numerous sectors.

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 Keywords

3D PRINTING USING IOT

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