iosr-JMCE   Volume-11 ~ Issue-2 ~ Mar-Apr 2014

Abstract: There has been a steep rise in the production of Ready Mix Concrete (RMC) in India due to ever increasing demand of concrete from the infrastructure as well as the real estate sector. It has become a great challenge for the RMC manufacturers to supply consistent level of quality of concrete to the customers. In this study, the quality performance of an RMC plant at Mumbai, India, using the Six Sigma philosophy has been evaluated by using various quality tools. The existing sigma level of the process has been found to be 1.23, which is very less than the manufacturing industry and RMC production process has been found neither stable nor capable. Some recommendations for process improvement and conclusions based on the observations of the present study are also presented at the end.

Keywords: DMAIC, DFSS, RMC, Six Sigma.

[1]. Kessler, Rafael, Motta; and Padula, Antonio, Domingo, The implementation of six sigma in Manufacturing Organizations: Motivations and Results Achieved, Brazilian Journal for Business and Management, 4 (2), 2005, 11-20.
[2]. Dale H. Besterfield, Quality Control (India, Prentice-Hall, 2012).
[3]. Pheng L.S and Hui M.S, Implementing and Applying Six Sigma in Construction, Journal of Construction Engineering and Management, 30 (4), 2004, 482-489.
[4]. Stevenson, William J., Operation Management (New York, USA, McGraw-Hill Irwin companies Inc., 2005)
[5]. Ali Amer M. Hasan Karakhan & Dr. Angham E. Ali Alsaffar, Quality Evaluation of Al-Rasheed Ready Concrete Mixture Plant By
[6]. Using Six Sigma Approach, Journal of Engineering, 18 (9), 2012, 1014-1028.

Abstract: In all Civil Engineering Structures, preparation of foundations for construction of structures assumes a lot of significance from the point of view of strength and stability. Due attention is required to be paid to this aspect. Ground Improvement techniques and Ground replacement are adopted for improving the strength characteristics. It is quite possible that a combination of these methods may also be used. Also rapid urban and industrial growth demands more land for further development. In order to meet this demand, land reclamation and utilization of unsuitable and environmentally affected lands by adopting one or more ground improvement techniques. The Boussinesq method uses elastic theory to calculate stress distribution in an elastic half space due to a point load. By integrating point loads over a specified area, the stress distribution in an elastic half space can be obtained under foundations and footings of different shapes. The main disadvantage of the Boussinesq method is that it assumes a homogeneous material. But, in general, the soil is stratified. For soil layers with high stiffness contrast, the Boussinesq solution can produce large errors in stress. The Westergaard equation (1938) are thought to provide better results for layered media, however the solution essentially smear out the effect of the different layers so that large errors will still occur for a finite number of layers with high stiffness contrast. The cardinal aim of the present work is to understand the effect of replacement of soil by more competent granular fill consisting of combination of 6mm metal and sand in different proportions. Accordingly, the investigation considers the granular material in different combinations of sand. The granular material is used in conjunction with four different types of soils in order to bring out relative effects on stress distribution. Keywords: Elastic moduli, granular fill, ground improvement, layered soil, soil-structure interaction, stiffness

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Abstract: It is really a very hard time, when all of us asking for sustainable development in every sector of our daily life. But to ensure the sustainable development we all have to be concentrate on some renewable sources of energy. In present circumstances, to fulfil our mission, we have to innovative as well as creative. In modern era, Construction of Building, Housing complex, and other high rising is a common story of any metropolitan city in the world. Our study is mainly focuses on the effective and efficient use of some waste material mainly in manufacturing "BRICKS", which is a one of the most fundamental materialfor building construction. In the study, we are trying to emphasize on some rarely used waste materialfor making "Eco-friendly Bricks" and it's significant impact on the environment as well as on civil engineering segment also.We believe that huge pollution growth can only be reduced by reusing and recycling the waste in an efficient and effective manner, and we need to arise our curiosity on it's positive impact so that we can able to shift our self from traditional approach to innovative and creative one.

Keywords: Geo-Polymer, Fly Ash, Green Leaf, Sustainability.

[1]. Ash Utilisation Department of NTPC. A-11 NFL Premises, 1stFloor , F-Wing, Sector-24 Noida.
[2]. Abstract in Arabian Journal for Science and Engineering.
[3]. Abstract in Construction and Building materials.
[4]. www.buildinggreen.com.
[5]. Ashish Kumar Parashar*, RinkuParashar "Comparative Study of Compressive Strength of Bricks Made WithVarious Materials to Clay Bricks" International Journal of Scientific and Research Publications, Volume 2, Issue 7, July 201.
[6]. JayeshPitroda , Rajiv Bhatt, Indrajit Patel , Dr. F. S. Umrigar " Techno economical study of FAL-G bricks"a case study in National Conference on "FLY ASH/FUTURISTIC MATERIALS IN CIVIL ENGINEERING CONSTRUCTION FOR SUSTAINABLE DEVELOPMENT" held at the BVM Engineering College. V.V.Nagar Gujarat on 12th August 2010.

Abstract: Multistoried structures which do not follow the requirements of seismic design may be affected by either damage or collapse due to severe ground motion which results in great loss of property and life. The purpose of this paper is to assess the damage and to evaluate the performance of the structures which are already designed and analyzed using linear static analysis for seismic loads as per the Indian codes IS-456, IS-1893 and IS-13920. It is proposed to study the performance of the structure before and after the linear state using pushover analysis which is a series of incremental static analysis. It is carried out on the 12-storied building model which was designed and analyzed for the earthquake analysis using STAAD for two seismic load cases (Zone-3 and Zone-5) considering both are Special Moment Resisting Frames. Pushover analysis is propounded to perform by SAP to get the extent of damage experienced by the structure at target displacement by the sequence of yielding of components, plastic hinge formation and failure of various structural components. Finally both the frames which were analyzed by linear static analysis for earthquake loading performed well and the damage is within the limits. Initially, yielding of the beams taken place then yielding of columns. This damage assessment shows that the both frames behave as ductile frames, even when subjected to seismic loading.

Keywords: linear static analysis; Non-linear analysis; pushover analysis; Target displacement ; plastic hinge; ductile frame.

[1]. IS 1893 (part-1): 2002. Indian Standard criteria for earthquake resistant design of structures
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[3]. FEMA 356-Prestandard and commentary for the seismic rehabilitation of buildings.
[4]. ATC 40-Seismic evaluation and retrofit of concrete buildings.