Teaching Documents by Annadurai Ramasamy
What factors have contributed to the operating performance of Greaves Limited
Papers by Annadurai Ramasamy
Journal of the Geological Society of India
Journal of Material Cycles and Waste Management, May 10, 2022
Sustainability, Feb 22, 2023
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Journal of Hazardous, Toxic, and Radioactive Waste, 2023
Sustainability
The main objective of this study is to use coconut husk to produce mortar for ferrocement. Mortar... more The main objective of this study is to use coconut husk to produce mortar for ferrocement. Mortar mix proportions are selected per ACI codes’ recommendation and the WRD Handbook. Four types of mortars: Cement and River Sand mortar (CSM), Cement, River Sand and Steel fibre mortar (CSSFM), Cement and Coconut Husk mortar (CCHM), and Cement, River Sand (60%), Coconut Husk (40%), and Steel fibre mortar (CSCHSFM) are used for this study Microstructural studies like SEM, EDX, XRD, and FTIR analysis on cement mortar constituents and mortar mixes are studied and reported. At 3, 7, and 28 days tests of hardened mortar, such as compressive, split tensile, flexural strength, and impact strength resistance, were studied. Test results revealed that the coconut husk is innovative and sustainable and could be an alternative fine aggregate that can be utilized in place of river sand, which in turn can be used for mortar production. Since it has a lesser density which proves to be an advantage for de...
Journal of Material Cycles and Waste Management
Coconut shell is used as an aggregate in concrete production. It is possible to produce lightweig... more Coconut shell is used as an aggregate in concrete production. It is possible to produce lightweight concrete using coconut shell as an aggregate. Coconut shell aggregate concrete properties both in fresh state and in hardened state are comparable with conventional concrete. Bond properties and durability properties of this concrete were well with in the range required to use as concrete. Structural behavior of coconut shell aggregate concrete under flexure, shear and torsion is similar to that of conventional concrete.
Arabian Journal of Geosciences, 2021
Drought affects the natural features, economic conditions, and living beings. Climate change impa... more Drought affects the natural features, economic conditions, and living beings. Climate change impacts numerous factors linked to drought on a global scale. A temperature rise contributes to a decline in precipitation, evaporation, and transpiration; hydrologic and agricultural dryness results from increased temperature. In deciding the energy flux between the atmosphere and the earth's surface, land surface temperature (LST) is a critical environmental factor. The assessment of the temporal variations of surface temperature and monitoring of drought uses Normalized Difference Vegetation Index (NDVI). The raster calculator in ArcGIS software performs the calculation using the different equations to obtain the vegetation index, land surface emissivity (LSE), brightness temperature, and surface temperature. Integrating the tools in ArcGIS software, the authors created a model for the automatic retrieval of surface temperature. The model results provided the land surface temperature for different years from 2016 to 2020. The minimum and maximum LST derived from the model was ranging from 14.54 to 49.90°C (2016–2020). The minimum and maximum NDVI derived from the model was ranging from -0.97 to 0.99 (2016–2020). The in situ surface temperature and Landsat-derived surface temperature had a 92 % of correlation. There was a nearly 99 % of correlation between NDVI and LST during 2016–2020. Due to the temperature rise and insufficient rainfall, there was stress in crops, and the region experienced a drought situation.
Journal of the Indian Society of Remote Sensing, 2020
The coastal zones of northern Odisha coast, western Bay of Bengal, are highly exposed to natural ... more The coastal zones of northern Odisha coast, western Bay of Bengal, are highly exposed to natural forcing. These regions are vulnerable due to natural hazards such as cyclones, tsunamis, floods, shoreline/beach erosion and sea-level rise. Further, the increased intensity and density of the extreme events in the recent decades have contributed more to the coastal vulnerability, thereby causing floods and inundation. Therefore, there is a need of sustainable use of the coastal zone with proper management practices. In this context, coastal vulnerability index (CVI) has been proved as an effective method for assigning the vulnerability status to any coastal zone. The present research work aims to develop a CVI by integrating risk values of nine input variables and to segment them into low, moderate, high and very high vulnerability categories as per their degree of vulnerability. The study area exhibits a long 273.8 km coastal tract, and about 9.6% of the coastal tract is under very high vulnerability category, followed by 29.7% under high vulnerability, 46.3% under medium vulnerability and rest 14.3% under low vulnerability.
Journal of Hazardous, Toxic, and Radioactive Waste
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Teaching Documents by Annadurai Ramasamy
Papers by Annadurai Ramasamy