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

Abstract: Background: The indiscriminate disposal of waste polyethene/plastic in some developing countries has become a huge challenge to those environments. Polyethene is a non-bio-degradable materials and when disposed indiscriminately causes drainage blockage, accumulation of moisture on asphalt pavements which eventually result in early pavement failure. Polyethene is a carbon-hydrogen (C-H) compound and possesses water proofing quality hence, could be used to modify bitumen for asphalt concrete production. Material and Method: This study was conducted to investigate the moisture resistance properties of asphalt concrete made from Pyrolized polythene....

Keywords: Moisture Resistance, Marshall Stability, Retained Marshall Stability, Swelling Index, Partial Replacement, Direct Addition

[1] Igwe, EA., Ekwulo, EO. and Otto, CG. Moisture Stiffness of Asphalt Concrete for Low Volume Roads: Comparative Study of Asphalt Institute and Witcazak 1-40D Models, International Journal of onstructive Research in Civil a Engineering. 2016, 2: 1-8.
[2] Kerb, M. and Walker, U. Journal of the Eastern Asia Society for Transportation Studies,. 2010, 8: 12-19.
[3] Igwe, EA. and Ekwulo, EO. The Influence of Rubber Latex on Dynamic Modulus of Hot Mix Asphalt Concrete, Archives of Applied Science Research, 3(1): 319 – 327, 2011.
[4] Awwad, MT. and Shbeeb, L. The Use of Polyethylene in Hot Asphalt Mixtures, American Journal of Applied Sciences. 2007, 4(6): 390-396.
[5] Sergii, K., Vasyl, N, and Artem, B. Improving Quality and Durability of Bitumen and Asphalt Concrete by Modification Using Recycled Polyethene Based Polymer Composition, Advance in Transportation Geotechnics 3, the 3rd international conference on transportation Geotechnics. 2016, 119-127.

Abstract: Engineering based SME is rapidly growing to be a key contributor to the national economy in Bangladesh by simultaneously creating jobs for the up-and-coming skilled labour forces, strengthening foreign currency resersve by reducing dependence on imported products for local industries and exporting high quality products. But growth of this promising field is often hinderd by the lack of internal R&D initiatives by the stakeholders. As a result, competing against international conterparts have become a struggle. In this work, we investigate widely used competeing automotive parts to identify parameters that contribute to the quality variation between local and imported components. We compare between......

Keywords: SME, microstructure, automotive, aluminum, alloy

[1]. Talukder, M. A. & Jahan, S. M. Competitiveness and Growth Hindrances of Light Engineering Industry of Bangladesh: A Study on Micro, Small and Medium-Sized Enterprise ( MSME ) Owners. Dev. Ctries. Stud. 7, 30–41 (2017).
[2]. Haque, M. M. & Maleque, M. A. Effect of process variables on structure and properties of aluminium - Silicon piston alloy. J. Mater. Process. Technol. 300, 122–128 (1998).
[3]. Udoye, N. E., Fayomi, O. S. I. & Inegbenebor, A. O. Assessment of wear resistance of aluminium alloy in manufacturing industry-a review. Procedia Manuf. 35, 1383–1386 (2019).
[4]. Pramod, R., Veeresh Kumar, G. B., Gouda, P. S. S. & Mathew, A. T. A Study on the Al2O3 reinforced Al7075 Metal Matrix Composites Wear behavior using Artificial Neural Networks. Mater. Today Proc. 5, 11376–11385 (2018).
[5]. Rao, C. M. & Mallikarjuna Rao, K. Abrasive wear Behaviour of TiB2 Fabricated Aluminum 6061. Mater. Today Proc. 5, 268–275 (2018).

Abstract: As electric wheelchairs are on a raising trend, there is plenty of scope in achieving a strong, lightweight and cost-effective wheelchair. This project illustrates some elegant engineering innovations in the chassis, motor and powertrain system that can help us achieve the goal. Furthermore, the project describes how the wheelchair can be converted into a stretcher and be used for transportation of patients and goods in hospitals or industries. As we proceed, we will see the designs, calculations and analysis for all the mechanical components such as power transmission, chassis and stretcher mechanism.

Keywords: Wheelchair, electric, stretcher, hospital environment, chain drive.

[1]. Dr. Sukanta Roga, Abhijeet Ku ar, "Design and Fabrication o Wheelchair cu Stretcher with Multi Fold", IJAIEM Volu e 6, Issue 6, June 2017.
[2]. Pro . Nikhil V. Bhende, Mithun G. Kolhe, "Design and Fabrication o Lever Propelled Wheelchair", IRJET Volu e: 04 Issue: 03 | Mar -2017.
[3]. Jyothish K Sunny, Thomas Paul, "Design and Fabrication o Stretcher Cu Wheel Chair", IJIRST Volu e 2 | Issue 11 | April 2016.
[4]. P. Swapna , Dr. B. Shar ila, "Electric Wheelchair or Physically Challenged", IRJET Volu e: 03 Issue: 05 | May-2016.
[5]. Mohan Ku ar R., Lohit H. S., "Design o Multipurpose Wheel Chair or Physically Challenged and Elder People", SASTECH Volume 11, Issue 1, Apr 2012.

Abstract: Background: The pile construction is a complicated process in comparison open foundation construction, insufficient or inaccurate data collection from a geotechnical investigation may lead to unforeseen delays and cost variations during the pile installation. The characteristics of a soil influences the depth of pile, size of the pile, grade of the concrete, quantity of reinforcement in addition to super structure load. While, casting the pile, preventive measure shall be planned, practiced from pile side wall collapse and also verticality of drilling pile bore must be maintained. The excavated soil should be disposed as per contract agreement. In this paper work, the relationship (i.e. a model) among various factors have been constructed to assess the quantity of steel and also a equation (i.e. a model) among the factors......

Keywords: Pile foundations; Bored piles construction; Cost of pile

[1]. Lowe, D J, Emsley, M W andHarding, A, (2006), Predicting construction cost using multiple regression techniques, ASCE Journal of Construction Engineering and Management. 132(7), 750-758, eScholarID:1b10328 DOI:10.1061/(ASCE)0733- 9364(2006)132:7(750).
[2]. Tarek M. Zayed1 and Daniel W. Halpin, ( 2003), Productivity and Cost Regression Models for Pile Construction, Journal of Construction Engineering and Management, Vol. 131, No. 7, July 1, 2005. ©ASCE, ISSN 0733-9364/2005/7-779–789.
[3]. S. Surenth, R.M.P.P.V. Rajapakshe, I.S. Muthumala and M.N.C. Samarawickrama, (2019), Cost Forecasting Analysis on Bored and Cast-In-situ Piles in Sri Lanka: Case Study at Selected Pile Construction Sites in Colombo Metropolis Area, ENGINEER - Vol. LII, No. 02, pp. [57-66], 2019 © The Institution of Engineers, Sri Lanka
[4]. Zayed, Tarek & Halpin, Daniel, (2005), Deterministic models for assessing productivity and cost of bored piles. Construction Management & Economics, 23. 531-543.
[5]. B.B.Scfilmming and W. A. Garvey, Monte Carlo Simulation of Pile Performance, http://onlinepubs.trb.org/Onlinepubs/hrr/1967/190/190-004.pdf