iosr-JMCE   Volume-18 ~ Issue-3 ~ May – June 2021

Abstract: Aggregates plays a major role in the field of construction, the requirements of conventional natural aggregates are increasing immensely. Replacement to this very substance with a relevant substitute is prominent. GGBS a hazardous waste product of iron industry have proven to constitute high cementatious properties when treated with alkalis like Sodium hydroxide and Sodium silicate. The production of mentioned artificial aggregates can be done using a laboratory scale pelletizer, whose angle of rotation and speed of rotation is adjustable. The aggregates are produces in different mixes based on alterations in the molarity of alkaline solution. The produced aggregates are introduced to cold bonding method, which is intended to increase the intermolecular strength. The properties of aggregates produced from optimal mixes are characterized according to standard specification. Tests like sieve analysis, crushing strength are conducted on the prepared aggregates.

[1]. Dr. Atluri Sathyam(2017), "Brief Study on Concrete Modified with Artificial Cold Bonded Pelletized Light Weight Fly Ash Aggregates", IOSR Journal of Engineering.
[2]. Hayda Arslan(2006), "Utilization of Fly Ash as Engineering Pellet Aggregates", Environ Geol (2006) 50: 761–770.
[3]. Dr. V Bhaskar Desai(2014), "A Study on Partial Replacement of Natural Granite Aggregate with Pelletized Fly Ash Aggregate", International Journal of Computational Engineering Research.
[4]. Abhishek P B(2020), "Production of Pelletized Fly Ash Aggregates by Geopolymerisation", IOSR Journal of Mechanical and Civil Engineering.
[5]. P Gomathi(2014), "Synthesis of Geopolymer based Class F Fly Ash Aggregates and its Composite Properties in Concrete", Archives of Civil Engineering, LX, 1, 2014.
[6]. K Venkateswarlu(2018), "Study of Concrete Modified with Artificial Cold Bonded Pelletized Light Weight Silica Fume Aggregates", IOSR Journal of Mechanical and Civil Engineering.

Abstract: Background: Basalt is a dark coloured, hard, dense, fine grained basic volcanic extrusive rock. It is a very important rock widely spread across Ikon in Cross River State of Nigeria and the globe. It is extensively used as engineering materials such as basalt reinforcing fibre, as coarse aggregates for cement and asphaltic concrete mix, rock fill for dams and break waters in sea port construction, material for rail road ballast and highway base course. Materials and Methods: Basalt coarse aggregate samples were collected from the site and examined in the laboratory using X-ray diffraction........

Keywords: Basalt, coarse aggregate, mineralogy, diffraction, composition, rocks

[1]. Goodman R E (1993) Rock in engineering construction. Engineering geology, Wiley, New York.
[2]. Al-Rawashdeh M and Shaqadan A, "Effect of basalt aggregates and plasticizer on the compressive strength of concrete" International journal of engineering and technology, volume 4, issue 4, 2015, p 520 – 525.
[3]. Al-Akhaly Ibrahim "Engineering properties of basalt coarse aggregates in Hamdan area, north west Sana'a Yemen" Journal of geological engineering, volume 42, 2018, p 159 – 174.
[4]. Chiadighikaobi Paschal C (2018) Basaltic fibre: A revolutionary material for meeting construction challenges in Nigeria. Departmental seminar, Cross River University of Technology, calabar.
[5]. Lar U A and Tsalna M S, "Geochemical characteristics of the Jos Plateau basalts, north central Nigeria" Global journal of geological sciences, volume 3, no. 2, 2005, p 187 – 193.

Abstract: In recent years, the demands on the surface quality of products have been very high and surface polishing has been required to be performed on a wide range of materials with different hardnesses and complex geometries. In the past, metal was mainly polished by hand. From the difficulties and requirements of that product, several new surface polishing technologies have been developed. Among them, Magnetic Abrasive Polishing (MAP) and Magnetic Abrasive Finishing (MAF) have been developed and applied in the production process. Magnetic Abrasive Polishing (MAP) has been researched and developed to deal with the disadvantages of older methods. In this article, I only focus on studying the MAP process using spherical metal particles, the magnetic force is a permanent magnet. The implementation....

Key Word: Surface polishing; copper; copper alloy; Cu; experimental; magnetic field

[1]. NhatTan Nguyen, ShaoHui Yin, FengJun Chen, HanFeng Yin, Van Thoan Pham, Trong Nhan Tran, Multi-Objective optimization of Circular Magnetic Abrasive Polishing of SUS304 and Cu Materials, Journal of Mechanical Science and Technology 30 (6) (2016) 2643~2650
[2]. NhatTan Nguyen, ShaoHui Yin, TrongNhan Tran, MinhQuang Chau, VanThoan Pham, DucHieu Le, Multi-objective optimization of improved magnetic abrasive finishing of multi-curved surfaces made of SUS202 material, International Journal of Advanced Manufacturing Technology DOI 10.1007/s00170-016-8773-3 (SCI).
[3]. 阮日新 (NhatTan Nguyen), 罗虎，王永强，陈逢军，胡天，尹韶辉, 基于环形磁场励磁的两面磁力抛光试验研究, 湖南大学学报（自然科学版）4(43) (2016) 31-37 (EI).
[4]. Z. Q. Liu, Y. Chen, Y. J. Li and X. Zhang, Comprehensive performance evaluation of the magnetic abrasive particles, The International Journal of Advanced Manufacturing Technology, 68 (1-4) (2013) 631-640.
[5]. S. H. Yin and T. Shinmura, Vertical vibration-assisted magnetic abrasive finishing and burring for magnesium alloy, International Journal of Machine Tools and Manufacture, 44 (12-13) (2004) 1297-1303.

Abstract: Background: Gasification and pyrolysis are some examples of thermo-chemical conversion processes that have proven to be a viable option for utilizing renewable energy. In conventional pyrolysis process, feed material in the reactor is heated using biomass or electric run heater. Which, in turn, causes excess energy consumption and production of greenhouse gases (GHG). Solar assisted pyrolysis would be one of the solutions to overcome this heating problem of the pyrolytic reactor. Materials and Methods: A redesigned pyrolysis system with a solar energy-based pre-heating mechanism was studied in this work. The feasibility of incorporating solar energy into a pyrolysis system has been examined independently for both transparent and......

Key Word: Pyrolysis; Solar energy; Thermo-chemical conversion; Greenhouse Gas; Energy crisis.

[1]. M. H. Masud, "Utilization of Waste Plastic to Save the Environment," in International Conference on Mechanical, Industrial and Energy Engineering, 2014, pp. 1–4.
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[5]. D. Mohan, C. U. Pittman, and P. H. Steele, "Pyrolysis of wood/biomass for bio-oil: a critical review," Energy & fuels, vol. 20, no. 3, pp. 848–889, 2006..

Abstract: Hard materials that has high abrasion and wear resistance are usually required for special applications where great need is demanded for longer durability, wear resistance and high strength. At the same time, machining such materials by the conventional methods are mostly uneconomical. Non-conventional cutting methods are used to cut such materials. One of such processes is the plasma arc cutting method. In plasma arc cutting, the parameters that are involved in the process mainly are the arc gap thickness, cutting speed and gas pressure.
The aim of this study is to evaluate the effects of the cutting parameters involved in cutting hard steel plates using Plasma arc cutting technology. The effect of these parameters on the quality of cut in terms of kerf width and heat affected zone are studied experimentally........

Keywords: Plasma arc cutting, wear resistant material, Kerf width, Heat Affected Zone, Hadox400

[1]. Deepak Kumar Naik &KalipadaMaity, "Experimental analysis of the effect of gas flow rate and nature on plasma arc cutting of hardox-400", Weld World 64, pp 345–352, 2020.
[2]. Pulkit Kumar Agrawal, Dilip Kumar Bagal, Ajit Kumar Pattanaik, Abhishek Barua, Siddharth Jeet, Biswajit Parida, Surya Narayan Panda, "Experimental Investigation of Cutting Parameters in Plasma Arc Cutting Using Advanced Optimization Approach: A Comprehensive Review", International Journal of Applied Engineering Research ISSN 0973-4562 Volume 14, Number 13, 2019 (Special Issue).
[3]. Milan Kumar Das, Kaushik Kumar, Tapan Kr Barman, Prasanta Sahu, "optimization of process parameters in plasma arc cutting of EN 31 steel based on MRR and multiple roughness characteristics using grey relational analysis" Procedia material science, vol. 5, pp. 1550-1559, 2014.
[4]. Subbarao Chamarthi, N. Sinivasa Reddy, Manoj Kumar Elipey, D.V Ramana Reddy, "Investigation Analysis of Plasma arc cutting Parameters on the Unevenness surface of Hardox- 400 material" Trans. Procedia Engineering, vol. 64, pp. 854 – 861, 2013.
[5]. Yahya HismanSelic, "investigating the effect of cutting parameters on material cut in CNC plasma" materials and manufacturing processes, vol. 28, pp. 1053 – 060, 2013

Abstract: Assessment of the hydro-chemical characteristics of water and its properties is important for surface water planning and management in the study area. It is not only the basic need for human existence but also a vital input for all development activities. The present hydro-geochemical study of water samples was carried out to assess their suitability for agricultural, domestic and drinking purposes. For this study, samples are collected from 13 locations during the pre-monsoon and post-monsoon sessions spanning over 20 years. Samples were analyzed for their.....

Keywords: Hydro-geochemical, US Salinity, Piper's trilinear diagram, Water Quality Index, Multivariate statistical analysis, Baitarani River, Irrigation, principal component analysis

[1]. Abdul HM, Jaward A, Bahram KM, Abass JK (2010) Evaluating raw and treated water quality of Tigris River within Baghdad by index analysis. J Water Resour Prot 2:629–635
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[5]. Ayers RS, Westcot DW (1976) Water quality for agriculture. FAO irrigation and drainage. Paper no. (29), rev. (1). U.N. Food and Agriculture Organization, Rome.

Abstract: In order to achieve a better understanding of the nature of the factors influencing surface water composition as well as to specify them quantitatively, various techniques were used to evaluate temporal and spatial variations in and to interpret large and complex water quality data sets collected from the Baitarani River Basin. It constitutes a dump of industrial and domestic rejections which contribute to the degradation of water quality. The objective of this study is to evaluate the water quality of the river and to analyze the suitability for drinking, agricultural and industrial uses. Surface water samples were analyzed for their physical and chemical properties using standard laboratory methods. Physical and chemical parameters such as PH, Turbidity, TDS, TSS, EC, DO, Alkalinity.....

Keywords: Baitarani River, sodium absorption ratio, US Salinity diagram, Piper's trilinear diagram, Water Quality Index

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