38 37 CHAPTER 1 INTRODUCTION 1.1 Motivation Materials with small grain sizes have been the focus of attention for scientists and engineers since it has been proved by the work of Hall [Hall51] and Petch [Pet53] that strength increases as we decrease the grain size of the material. This finer grain size also helps in achieving superplastic deformation at higher strain rates and improves the fracture toughness of the material. Some of the traditional methods involving mechanical processes lead to
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EXPERIMENTAL PROGRAM 1. Materials 43 grade OPC cement having specific gravity of 3.15% was used for cement concrete. For geopolymer concrete siliceous pulverized fly ash obtained from Hi-Tech private limited, Tuiticorin, India, having a specific gravity of 2.2 and low calcium, ground granulated blast furnace slag of specific gravity 2.9 obtained from the, JSW Steel Limited, Salem. India, were used as the source material.Table 1 gives the oxide composition. 97% purity sodium hydroxide (NaOH) pellets
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discarded/used engine oil, various researches have already been performed that explains the behavior of concrete properties after its doping in concrete mix. Since last 15 years, this concept is in huge trend for finding a solution towards effective disposal and ultimately a worthy usage of used engine oil while on the other hand, finding a substitute of admixtures that are being used in concrete thereby, preserving conventional building materials Various studies that have done in this background are
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EPS is approximately 98% air captured within a 2% cellular matrix, this causes it to be very lightweight resulting in lower loads applied to the foundation. It has a densities of between 10 and 35kg/m which allows for light and safe construction work. Due to its low weight it is very easy to transport, thus saving a lot of fuel, therby lowering costs. The low weight of EPS also makes it easy to handle on site, especially considering that the lifting of materials with heavy machinery has become an
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The Egg Drop project consisted of a few different materials that lessened the egg’s force of impact on the earth. The materials used were: two toilet paper rolls, nine and a half straws, and a half piece of printer paper. Other materials used were: very strong glue and masking tape to hold the contraption together. The egg never touched the ground, which lessened the force on it. Instead of the egg receiving the maximum force of the cement, the materials around it did. The outside materials were
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5. For Ian, his error is that he is regrouping the number in the ones place instead of the number in the tens place. For him, I would recommend that his teacher work with him on identifying numbers in the ones and tens place, and showing him step by step how to carry the tens place over instead of carrying the ones place over. For him I would also recommend using problems that are adding two two-digit numbers that require regrouping from the ones place to the tens place. For Moniqua, her error is
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Administrative Region Architectural Services Department Quantity Surveying Branch Queensway Government Offices 66 Queensway Hong Kong 2012 EDITION CONTENTS Demolitions and Alterations Piling and Caissons Diaphragm Walling Excavation Underpinning Concrete Works Brickwork and Blockwork Drainage (including Underground Pipe Ducts) Waterproofing Stone Works Roof Tiling Wood Works Ironmongery Steel and Metal Works Plastering and Paving Plumbing and Water Supply Systems Glazing Painting Landscaping External
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Songklanakarin J. Sci. Technol. 32 (5), 461-468, Sep. - Oct. 2010 Original Article Comparison between half-cell potential of reinforced concrete exposed to carbon dioxide and chloride environment Kitipoom Chansuriyasak 1, Chalermchai Wanichlamlart 2, Pakawat Sancharoen2, Waree Kongprawechnon3 and Somnuk Tangtermsirikul1,2 1 School of Civil Engineering and Technology, 2 Construction and Maintenance Technology Research Center (CONTEC), 3 School of Information, Computer, and Communication
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STUDY OF EFFECTIVE LOCATION OF SHEAR WALL AVINASH M S MAHAJAN VINAY PRAKASH PATEL DHRUV PRAMODBHAI SMBS SMBS SMBS VIT University VIT University VIT University ms_avinash911@ymail.com vinu31390@yahoo.co.in psweetu14@gmail.com ABSTRACT - Shear walls are specially designed structural walls incorporated in buildings to resist lateral forces that are produced in the plane of the wall due to wind, earthquake and other forces. They are
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information regarding the use of RAP, technical guidance on high-RAP projects, and direction on research activities. For more information on the RAP ETG, please see: http://www.ncat.us/RAP/. Recycled asphalt on the other hand is quite simply asphalt concrete which has been reprocessed by mixing the reclaimed asphalt pavement with new asphalt and aggregates. In some circumstances, a recycling agent is also introduced into the mix to improve the performance of the recycled asphalt by softening and rejuvenating
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