iosr-JMCE   Volume-17 ~ Issue-1 ~ Jan. - Feb. 2020

Abstract: This paper is basically concerned with the calculation of the values of response modification factor at failure for idealized reinforced concrete multi-story flat slab system designed according to the Egyptian code of loads ECP-201 (2012). Parametric studies are carried out for RC multi-story flat slab with 3, 6 and 9 stories that are modelled in three-dimensions as residential buildings with various arrangements and variable parameters. SAP2000 software is used to be able to model and analyse these kinds of systems using three-dimensional nonlinear static pushover analysis considering of material and geometrical nonlinearity. The buildings are examined under the effect of several parameters such asnumber of stories, seismic zone intensity (0. 15g or 0. 25g) and type of spectrum (1 or 2) based on Egyptian code. Their influence on pushover curve, R-factor and its components are analysed. Comparisons among the results show the particular difference of some values and the indifference of other values including R-factor values

[1]. Abuo El-Ela A., El-Hadidy, M. and AbouElenean, K. (2012) "Seismic hazard studies in Egypt" NRIAG Journal of Astronomy and Geophysics Volume 1, Issue 2.
[2]. ASCE SEI/ASCE 7–10 (2010), Minimum Design Loads for Buildings and Other Structures, Reston (USA): American Society of Civil Engineers.
[3]. Asgarian, B. and Shokrgozar, H.R. (2009) BRBF response modification factor, Journal of Constructional Steel Research 65, 290_298.
[4]. ATC 19 (1995), Seismic Response Modification Factors, Applied Technical Council, California Seismic Safety Commission, Redwood City, California.
[5]. ATC 40 (1996), Seismic Evaluation and Retrofit of Concrete Buildings, Applied Technical Council, California Seismic Safety Commission, Redwood City, California

Abstract: Most machine foundation researches focus on the dynamic analysis of the foundation and the soil behavior specially for Machine foundations subjected to impact loads. The aim of this study is to improve the properties of the concrete itself to avoid the failure of machine foundations including the failure of anchor bolts. It is important to improve strength, durability, time dependent deformations and permeability for well performance of machine foundations concrete. This paper presents a case study for reconstructing of two concrete machine foundations subjected to dynamic loads. They are resting on a semi infinite half space. The concrete mixes have Ordinary Portland cement (O.P.C.) with 350 kg/m3 (590 lb/yd3) and 1% suprplasticizer. The concrete foundations are cured with forced water to get adequate curing for core of the massive foundations. The surfaces of the foundations.....

Key words: machine foundation; concrete; curing; creep; shrinkage

[1]. Barkan, D.D. "Dynamics of Bases and Foundations", McGraw-Hill Book Company, New York, USA (1962). [2]. George Gazetas, Analysis of machine foundation vibrations: State of the art, International Journal of Soil Dynamics and Earthquake Engineering. January (1983) 2(1):2-42 ·
[3]. Gary Yung, Dynamic Analysis of Machine Foundation: When a Static Force cannot Give the full picture, HKIE-IEM-CIE Tripartite Seminar Recent Developments in Limit State Design for Geotechnical Works, November (2014).
[4]. K.G. Bhatia, Foundations for industrial machines and earthquake effects, ISET Journal of Earthquake Technology, Paper No. 495, Vol. 45, No. 1-2, March-June 2008, pp. 13–29.
[5]. Piyush K. Bhandari, Ayan Sengupta, Dynamic analysis of machine foundation, International Journal of Innovative Research in Science, Volume 3, Special Issue 4, April 2014 National Conference – VISHWATECH.

Abstract: Facility layout approaches have assumed infinite capacities for the production system and material handling in determining the layout. This study conducts research on addressing dynamic facility layout designs in which the demand varies from one time period to the next while taking into consideration finite capacity constraints for both the logistics and production systems. The research uses a genetic algorithm to develop the facility layout for each time period. Simulation studies are conducted for the developed layout to determine if demand can be met for the given time period. The research develops functions that can be used to evaluate the costs of changes in the parameters, such as increased production capacity, increased material handling capacity, or a combination of both parameters, to meet the demand. The aim of this research is to minimize the cost of meeting demand over a given time period under dynamic conditions.

Keywords: Capacity constraints, Dynamic conditions, Facility layout, Simulation, problem design

[1]. Ozcelik, F. A hybrid genetic algorithm for the single row layout problem, International Journal of Production Research, 2012, 50 (20): 5872-5886
[2]. Lenin, N., Siva Kumar, M., Islam, M.N and Ravindran, D. Multi-objective optimization in single row layout design using a genetic algorithm, International Journal of Advanced Manufacturing Technology, 2013, 67 (5-8): 1777-1790
[3]. Lenin, N., Kumar, M.S., Ravindran, D. and Islam, M.N.A Tabu search for multiobjective single row facility layout problem, Journal of Advanced Manufacturing Systems, 2014, 13 (1): 17-40
[4]. Tsuchiya, K., Bharitkar, S. and Takefuji, Y.1976, "A neural network approach to facility layout problems", European Journal of Operational Research, Vol-89, pp 556-563, 1996
[5]. S.Jannat. 2008, "A genetic algorithm approach with Pareto Optimal Solution for multi-objective facility layout problem"M.Sc. Engineering Thesis, Department of Industrial & Production Engineering

Abstract: In the age of renewable energies, geothermal energy is playing a key role in society. This resource can be utilized either directly or indirectly. Some of the most often used direct application areas of geothermal energy include agriculture, aquaculture, and balneology among others. Honey processing has emerged as a key area where geothermal energy can be applied for societal benefits. This study sought to determine how geothermal energy can be applied in honey extraction and processing. Based on the findings, the bee farmers in Menengai faces challenges during honesty processing mainly wastage. The designed system would help to solve this challenge. The simulation results indicated that, by maintaining certain flow rates of the geothermal water (fluid) and blowing the extracted heat at a given rate, the desired temperature of 45 -50 °C at which honey is extracted from honeycombs can be achieved. Similarly, fine-tuning the parameters would attain temperatures in the range of 75 °C, which can be beneficial in the preservation of the honey via denaturing of yeast. This system will help to improve honey processing and promote large scale honey production.

Keywords: Geothermal Energy, HMF, Honey Processing, Lindal diagram, Simulink

[1]. IRENA (2014). "Renewable Power Generation Costs in 2014", IRENA, Abu Dhabi, http:// www.irena.org/ Document Downloads/ Publications / IRENA_RE_Power_ Costs_2014_ report.pdf.
[2]. Johnston, I., Narsilio, G., & Coll, S. (2011). Emerging geothermal energy technologies. KSCE Journal of Civil Engineering, 15(4), 643-653.
[3]. Kiruja J. (2011). Potential for direct utilisation of geothermal energy at the Lake Bogoria geothermal resource. Proceedings of Kenya Geothermal Conference. KICC, Nairobi.
[4]. Radtke, J., & Lichtenberg-Kraag, B. (2018). Long-term changes in naturally produced honey depending on processing and temperature. Journal of Apicultural Research, 57(5), 615-626.
[5]. Shere, J. (2013). Renewable: The World-Changing Power of Alternative Energy. St Martin's Press: New York, p. 201.

Abstract: This paper presents the structural behaviour of Carbon Fibre Reinforced polymer strengthened concrete beams under fire loading. The resistance of fire for concrete members reinforced with carbon fibre reinforced polymer (CFRP) needs to be investigated as the material has been widely accepted as a construction material and the global implementation of CFRP composite material in buildings is on the way.The investigation is undertaken considering the ISO834 standard fire conditions given in ACI 216.1(2007)and Eurocode 2(2002). A program was developed using FORTRAN that implemented the probabilistic assessment based on the First Order Reliability Method (FORM). The safety of the CFRP reinforced beam increases withan increment in the thickness of the concrete cover.

Keywords: Fire Resistance, Concrete, First Order Reliability Method, CFRP

[1]. Afolayan, J. O., (1992): Reliability-Based Analysis and Design, Departmental Seminar, Department of Civil Engineering, Ahmadu Bello University Zaria
[2]. Eurocode 2 (2002):Design of Concrete Structures, Part 1 – 2: Structural Fire Design.
[3]. Fletcher,A.J, Wilson, R.J., Platten, A.K. (2007):Mathematical modelling of thermal stresses resulting from transient heat transfer in concrete at high temperatures, IMechE
[4]. Gollwitzers, S., Abdo, T., and Rackwitz, R., (1988): First-order reliability method: FORM software. User manual. Munich.
[5]. Hu K., He G., and Lu F. (2007): Experimental Study on fire Protection Methods of Reinforced Concrete Beams Strengthened with Carbon Fibre Reinforced Polymer. Fourier of Architecture and Civil Engineering in China. 1. 399-404

Abstract: In Ethiopia Teff (Eragrostis teff) is an important food grain where it is used to for the preparation of Injera which is the major food used in Ethiopia. Teff milling generates a by-product known as Teff Husk (TH). Around 22 percent husk is generated during milling. As the Teff husk is organic waste which is obtained after harvesting in large quantity. Among this small quantity is used for feeding the cattle's, rest is thrown or burnt which causes an environmental problem. Therefore, in this research we have made an attempt to study the effect of Teff husk on mechanical and durability properties of concrete with different percentages (5%, 10%, 15%, 20%, 25% and 30%) of TH with sand replacement by keeping constant w/c ratio of 0.45. Properties like Compressive strength, split tensile......

Keywords: Teff Husk, compressive strength, split tensile strength, water absorption, density

[1]. BiraraE. Teff Production and Marketing in Ethiopia. A Journal of Radix International Educational and Research Consortium, 2017;6 (4).
[2]. Akinwumi.et.al (2016). Rice Husk as a Concrete Constituent: Workability, Water Absorption, and Strength of The Concrete, Asian Journal of Civil Engineering (BHRC). 2016; 17, 887-898.
[3]. B.H. Sadaa Y.D. Amartey and S. Bako. An Investigation into the Use of Groundnut Shell as Fine Aggregate Replacement, Nigerian Journal of Technology. 2013; 32 (1), 54-60.
[4]. Dr. Kimeng Henry. et.al, Feasibility Study of the use of Groundnut Shells as Fine Aggregates in Lightweight Concrete Construction, International Journal of Advanced Research in Engineering. 2015; 1(1), 13-16.
[5]. Wen-Ten Kuo. Et.al. Engineering properties of controlled low-strength materials containing waste oyster shells, Construction and Building Materials. 2013; 46, 128–133.

Abstract: ISM Code as part of the provisions of Safety of Life at Sea (SOLAS) is the management of ship operations to improve the safety of ships and crew, aiming to see the extent of its effectiveness, using the qualitative methods of gap analysis. The results showed that the ISM Code had not been effectively applied to the training ship in the Barombong Maritime Polytechnic. The commitment between the management and the internal audit crew has never been carried out, with the vertical and horizontal lines have not been implemented properly.

Keywords: ISM Code, Safety, Coordination, effectively

[1]. Jinca M.Y., 2011. Sea Transportation. Brilliant International Surabaya.
[2]. Malisan Jony, Jinca, M.Y., Saleng Abrar, 2012. Role of Human Resource in Improving Indonesian Transport Safety Case Study: Traditional Sea Transport.
[3]. Ministry of Transportation, 2008. RI Law No. 17 of 2008
[4]. Presidential Decree, 1980, Presidential Decree No. 65 about the adoption of SOLAS
[5]. Decree of the Director General, 1996. Decree of the Director General of Sea Transportation No. PY 67/1/6/1996 concerning the implementation of Ship Safety Management

Abstract: The durability of cementitious composites continues to be an issue that receives the attention of practitioners and researchers around the world, which has led to the design of high-performance cementitious composites such as engineered cementitious composites (ECC). ECCs have high ductility capacity that makes them more durable, however, further, improvement isdesirable.This paper, therefore,sought to evaluate the mechanical properties and sorptivity capabilities of ECCs produced with dosages of nano-silica.The 28th -day test results showed improvements in the compressive strength of the specimens with increasing dosage of nano-silica. Nonetheless, the 28th -day flexural strength of the specimens slightly reduced with an increasing amount of nano-silica dosage. Concerning.........

Keywords: Cementitious composites; Compressive strength; Flexural strength; Nano-silica, PVA fibers, Self-healing, Sorptivity

[1] Muhammad, N.Z., et al., Tests and methods of evaluating the self-healing efficiency of concrete: A review. Construction and Building Materials, 2016. 112: p. 1123-1132.
[2] Gardner, D., et al., Case study- A survey on problems encountered in current concrete construction and the potential benefits of self-healing cementitious materials. Case Studies in Construction Materials, 2018. 8: p. 238-247.
[3] Zheng, Q., et al., Graphene-engineered cementitious composites: Small makes a big impact. Nanomaterials and Nanotechnology, 2017. 7: p. 1-8.
[4] Wille, K., A.E. Naaman, and G.J. Parra-Montesinos, Ultra-High Performance Concrete with CompressiveStrength Exceeding 150 MPa (22 ksi): A Simpler Way. ACI Materials Journal, 2011. Title no. 108-M06: p. 46-54.
[5] Li, V.C., and E.-H. Yang, Self Healing in Concrete Materials, in Self Healing Materials: An Alternative Approach to 20 Centuries of Materials Science, S.v.d. Zwaag, Editor. 2007, Springer Series in Material Science The Netherlands p. 161-193.