Aggregates for Concrete Aggregates are inert granular materials such as sand‚ gravel‚ or crushed stone that‚ along with water and cement‚ are an essential ingredient in concrete. Aggregates are the most mined materials in the world. For a good concrete mix‚ aggregates need to be clean‚ hard‚ strong particles free of absorbed chemicals or coatings of clay and other fine materials that could cause the deterioration of concrete. Aggregates‚ which account for 60 to 75 percent of the total volume
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Aggregates is a major part of concrete‚ it is of urgent need that we look into the influence of aggregate on the fresh as well as hardened properties of concrete. Better grading of aggregate not only will show better results in the properties of the concrete but will also help in saving expensive materials such as cement‚ fly ash and admixture. In the comparative study of influence of the aggregate on high strength concrete‚ here is an attempt to study strength characteristics of cubes and cylinders
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The Bell Curve The opinions of Herrnstein and Murray in their book‚ The Bell Curve is that human intelligence is both inherited and also has environmental factors that contribute to a person’s future in many different areas such as; finances‚ a career‚ when they start a family‚ and whether or not a person will break the law instead of a person’s level of education and economic status. The authors go on to say that the more intelligent people of society are keeping their distance from the less
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Learning Curve Primer The concept of a Learning Curve is motivated by the observation (in many diverse production environments) that‚ each time the cumulative production doubles‚ the hours required to produce the most recent unit decreases by approximately the same percentage. For example‚ for an 80% learning curve: If cumulative production doubles from 50 to 100‚ then the hours required to produce the 100th unit is 80% of that for the 50th unit. The learning curve formula can be expressed
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ME Assignments‚ TERM-1 ➢ LAST DATE OF SUBMISSION- 20.09.12 Roll no. Questions 12DM001 1.If the market demand curve is given by QD=15-8P and the market supply curve QS=2P‚find the equilibrium price & quantity graphically & mathematically. 2.Suppose the technology to manufacture computers improves but due to some recession in the economy ‚the income of the consumer falls. Assuming computers to be normal good‚ what will be the equilibrium price & quantity
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C h a p t e r 4 4) A) B) C) D) ELASTICITY Price Elasticity of Demand Topic: The Price Elasticity of Demand Skill: Conceptual Topic: Calculating Elasticity Skill: Conceptual 1) The slope of a demand curve depends on A) the units used to measure price and the units used to measure quantity. B) the units used to measure price but not the units used to measure quantity. C) the units used to measure quantity but not the units used to measure price. D) neither the units used to measure
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Bombay The long-run cost curve (LTC) is composed of a series of short-run cost curves. Assumes that the firm has only one plant‚ with the corresponding short-run cost curve given by STC1‚ Suppose the firm decides to add two more plants with associated two more short-run cost curves given by STC2 and STC3. Prof. Trupti Mishra‚ School of Management‚ IIT Bombay The long-run total cost curve (LTC) is then drawn through the minimum of the short-run cost curves‚ STC1‚STC2‚ and STC3. The
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Aggregate Planning Aggregate Planning Aggregate planning is essentially a big-picture approach to planning. It is intermediate-range capacity planning that typically covers a time horizon of two to twelve months‚ although in some companies it may extend to as much as eighteen months. Aggregate planning is also sometimes known as sales and operations planning. Sales and operations planning is the intermediate-range decisions to balance supply and demand‚ integrating financial and operations
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Supply and Demand Factors Understanding supply and demand is the underlying foundation of all economics. The term demand is used to indicate consumers’ willingness to buy while supply indicates willingness to sell. The relationship between demand and price is reflected by quantity demanded‚ meaning that at a certain price with everything else held constant‚ this is the amount people are willing to buy. The same applies for supply for quantity supplied‚ at a given price with all else constant this
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Table Z: Areas under the standard normal curve (negative Z) Second decimal place in z 0.06 0.05 0.04 0.03 0.09 0.08 0.07 0.02 0.01 0.0001 0.0001 0.0002 0.0002 0.00 * 0.0000 0.0001 0.0001 0.0002 0.0002 z -3.9 -3.8 -3.7 -3.6 -3.5 0.0001 0.0001 0.0001 0.0002 0.0001 0.0001 0.0001 0.0002 0.0001 0.0001 0.0001 0.0002 0.0001 0.0001 0.0001 0.0002 0.0001 0.0001 0.0001 0.0002 0.0001 0.0001 0.0001 0.0002 0.0001 0.0001 0.0001 0
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