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Vijayalakshmi, M. M.
- Evaluating the Performance of Superpave Graded Bituminous Mix
Authors
1 Sathyabama University, Sholinganallore, Chennai - 600119, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 35 (2016), Pagination:Abstract
Background/Objectives: In all over India, the bituminous mixes are designed based on the fulfillness of laboratory standards. The existing method is not focusing on field condition, they simulate only time based requirements. Methods: To improvise the quality and performance of bituminous mix, the product of SHRP asphalt research program has developed a new system called Superpave (Superior Performance Pavements). Superpave design mix will optimize the asphalt mixtures resistance in deformation, fatigue, cracking and rutting. The Superpave system was created to make the best technology to suit the environmental condition with the better performance compared to Marshall Methods. Findings: In Superpave design only 10% of flat and elongated aggregates are acceptable. The main objectives of this study to develop, the performance based design mix for Indian condition using Superpave graded bituminous mix. This study is mainly focusing on the Superpave graded bituminous mixes. The various factors such as, Stability, Flow, Voids in Mineral Aggregates (VMA), Voids in Filled Bitumen (VFB) and Air Voids (Va) are compared with Marshall hammer and Hugo Compactor. Applications/ Improvements: In this Study it suggest that, the using of Hugo Hammer gives improving in strength and Increasing effects in Volumetric Analysis.Keywords
Marshall Hammer and Hugo Compactor, Superpave, VMA, VFB, Va.Full Text
- Thermal Analysis on Photovoltaic Thermal Hybrid System with Cooling Channel with V-Baffles
Authors
1 Institute for Energy Studies, Anna University, Chennai - 600 025, Tamil Nadu, IN
2 Department of Civil Engg, Sathyabama University, Chennai - 600 119, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 8, No 36 (2015), Pagination:Abstract
This research study presents the thermal analysis of photovoltaic thermal hybrid system with cooling channel with V-baffles. Solar intensity, ambient temperature, inlet and outlet air channel temperature, glazing temperature, tedlar temperature, velocity of air inside the duct and mass flow rate of air are measured and used to calculate the thermal performance of photovoltaic thermal hybrid system. The maximum thermal, equivalent thermal and overall thermal efficiency of the PVT system with cooling channel with V-baffles are found to be 18.9%, 36.5% and 48.8% respectively. The present experimental performances is found to be in reasonable agreement with the earlier published results.Keywords
Photovoltaic Thermal Hybrid System, Thermal Performance, V-BafflesFull Text
- Study on Effect of Microparticle and Industrial Waste on Strength of Concrete
Authors
1 Department of Civil Engineering, Faculty of Building and Environment, Sathyabama University, Chennai - 600119, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 5 (2016), Pagination:Abstract
Background: The objective is to study the strength of concrete, when using definite proportions of materials generated from industrial wastes with micro particles. As per Integrated National Plan on waste, Ceramic wastes are considered as Non – Hazardous. Methods/Analysis: In the present work, partial replacement of concrete compositions with Titanium dioxide TiO2 micro particle, ceramic wastes and rice husk ash are analysed. The coarse aggregate is replaced by 30% of ceramic waste and cement has been replaced by 10% RHA with added TiO2 micro particle in the range of 0.5%, 1%, 1.5% and 2% by weight for M30 grade concrete. Findings: Concrete Specimens are tested and compared in terms of compressive, split tensile values to the conventional concrete. These tests were carried out to evaluate the strength for 7 and 28 days. Test results have indicated that the strength achieved by replacing coarse aggregate with 30% ceramic waste and cement with (10% of RHA+ 1% of TiO2) is in optimum condition without affecting properties of fresh and hardened concrete. Applications/Improvements: Combination of nanotechnology with use of industrial waste results in attaining an energy efficient and greener concrete. Also an industrial waste in concrete not only helps in their disposal, but also saves the natural resources.
Keywords
Concrete, Ceramic Waste, Micro-Particle, Rice Husk Ash, Titanium di-OxideFull Text