Informatics Publishing Limited

T. Bhagavathi Pushpa ¹, V. Sekaran ², S. J. Sardhar Basha ³, J. Jegan ¹

Affiliations
1 Department of Civil Engg., Anna University, University College of Engg., Ramanathapuram, 623 513, T.N., IN
2 Department of Civil Engineering, Paavai Engineering College, Namakkal, IN
3 Department of Chemistry, Anna University, University College of Engg., Ramanathapuram, 623 513, T.N., IN

Abstract

Nowadays, solid waste disposal is the most pressing problem facing mankind throughout the world. The solid waste management plays a significant role to create a sustainable environment. Composting is a controlled decomposition of an organic matter into nutrient rich humus, which is relatively a stable organic end product. The activated Effective Microorganisms (EM) are used to decompose the solid organic materials. EM considerably improves the decomposition of organic materials and quality of compost and reduces the volume of compost by 50% or less in the raw material. This paper deals with the comparison of four matured composts from different waste organic materials such as kitchen waste, leaf waste, paper waste and water hyacinth waste using Effective Microorganisms. The parameters like pH, temperature, moisture content and height of bed were monitored and maintained throughout the process. The end products of humus like compost were characterized and analysed for physico-chemical characteristics like pH, moisture content, organic carbon, nitrogen, phosphorus, potassium and C:N ratio. The results of all the matured composts showed better quality and as an effective adsorbent medium for the removal of crystal violet dye from aqueous solution.

Keywords

Compost, Effective Microorganisms, Organic Waste, Dye Removal, Crystal Violet.

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G. Lavanya ¹, J. Jegan ¹

Affiliations
1 Department of Civil Engineering, University College of Engineering Ramanathapuram, Ramanathapuram, Tamil Nadu, IN

Abstract

This paper presents the results of the experimental investigations carried out to determine the flexural behavior of geopolymer concrete beams of various grades. The beams were designed as under reinforced with tensile reinforcement ratios 1.25% and 1.80%. The beams were tested under two point static loading. Performance aspects such as load carrying capacity, moments, deflections and the failure modes were studied for the geopolymer concrete beams. Also, an analytical model was developed using finite element analysis software (ANSYS 14.5) from the experimental investigations. The test results showed that the geopolymer concrete exhibits better performance.

Keywords

Geopolymer, Finite Element, Class C Fly Ash, Ambient Curing, ANSYS.

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