Archives

Research Paper Pg. 01-09

📋 Abstract

Abstract: In such a situation the Quarry rock dust can be an economic alternative to the river sand. Quarry Rock Dust can be defined as residue, tailing or other non-voluble waste material after the extraction and processing of rocks to form fine particles less than 4.75mm. Usually, Quarry Rock Dust is used in large scale in the highways as a surface finishing material and also used for manufacturing of hollow blocks and lightweight concrete prefabricated Elements.

This paper presents the feasibility of the usage of Quarry Rock Dust as 100% substitutes for Natural Sand in concrete. Mix design has been developed for M40 grade using design approach IS for both conventional concrete and quarry dust concrete. Tests were conducted on cubes and beams to study the strength of concrete made of Quarry Rock Dust and the results were compared with the Natural Sand Concrete. It is found that the compressive and flexural strength of concrete made of Quarry Rock Dust are nearly 10% more than the conventional concrete. Tests were also conducted on cubes and beams which are exposed to temperatures of 300°C for 1hr, 3hr durations respectively.

The results show that at a dosage 1.3% of super plasticizer by weight of cement the concrete made of quarry stone dust as fine aggregate attained low strengths when compared with other dosages (1% and 1.6%) in compression and flexure.

Research Paper Pg. 10-14

📋 Abstract

Abstract: Of late, conducting polymers are assuming a lot of importance. In this study, proton conducting polymer electrolyte based on PVA complexed with Oxalic acid and Malonic acid is prepared using solution cast technique. XRD is used to examine the complexation of PVA polymer with Oxalic acid and Malonic acid. The results of XRD reveal that with the increase of Oxalic acid and Malonic acid concentration, the amorphous nature of PVA polymer matrix increases. FTIR spectra studies for pure and complexed polymers reveal the vibrational changes that occur due to the presence of dopant salt in the polymer. Also, the presence of O-H, C-H and C-C groups is indicated when FTIR spectrum of pure PVA is compared with the spectra of complexed polymers. The DC conductivity measurements have been taken on the polymer samples in the temperature range 303 K to 373 K. From these measurements it is observed that the conductivity is found to increase with the concentration of dopant as well as temperature. The results obtained are presented.

Research Paper Pg. 15-22

📋 Abstract

Abstract: Heat Transfer is the most important phenomena in engineering application. Complete recovery of heat is a challenging task. Different people opt for different option for heat recovery. The most important parameter in heat transfer is heat transfer coefficient. Higher the value of heat transfer coefficient higher is heat transfer from the system. The objective of the dissertation is to study the effect on heat transfer in pipe and pipe having different flow cross section using ANSYS. To achieve this pipe of length 1.5 meter is taken. The fluid is flowing full in pipe. The different parameters like pressure, velocity, temperature, and heat flux and heat transfer coefficient are found out using simulation at various cross sections along the flow. The cross section is at 0.3, 0.6, 0.9, 1.2 and 1.5 meters respectively. The simulations are carried out at different mass flow rates.