Consolidation of plastic concrete is termed as compaction. In the process of compaction‚ efforts are only directed to reduce the voids in the compacted concrete. Compaction of concrete can be done either manually or mechanically. When it is done manually it is called hand compaction or tamping‚ and in second case it is termed as machine compaction. Hand compaction: Hand compaction is done with the help of steel tamping rods‚ or timber screeds. Marrow and deep members are compacted with tamping
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The Drawings Of Leonardo da Vinci And Michelangelo Lillian M. Floyd ART/101 Shelly Scott-Harmon February 22‚ 2013 Leonard da Vinci and Michelangelo looked at drawing as a part of a creative process due to the fact that this medium needs a more in- depth process that forces the artists to look
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Mixture proportioning: Procedures outlined in ACI 211.1 should be used for mixture proportioning. Typical proportions for heavyweight concrete are shown in Table 2. MATERIALS : Cement Cements conforming to ASTM C 150‚ which would be suitable for conventional concrete and produce the required physical properties‚ are suitable for use in heavyweight concrete. Aggregate Thorough examination and evaluation of heavyweight aggregate sources are necessary to obtain material suitable for the type
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7166M01.qxd_lb 6/3/09 09:38 AM Page 1 1 BASIC CONCEPTS 1.1 INTRODUCTION Concrete is strong in compression‚ but weak in tension: its tensile strength varies from 8 to 14 percent of its compressive strength. Due to such a low tensile capacity‚ flexural cracks develop at early stages of loading. In order to reduce or prevent such cracks from developing‚ a concentric or eccentric force is imposed in the longitudinal direction of the structural element. This force prevents the cracks
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a lot of concrete and descriptive language in his work. Langston Hughes’s essay “Salvation” uses detailed descriptions to impact the reader. Description is “a sketch or account of anything in words; a portraiture or representation in language; an enumeration of the essential qualities of a thing or species” (“description”). Authors use concrete language to influence readers. Concrete language is “based off the five senses which are hearing taste‚ sight‚ touch‚ and smell” (“Concrete”). Hughes
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Ray Bradbury’s The Illustrated Man: The Concrete Mixer Imperialism Ray Bradbury’s “The Concrete Mixer‚” tells the story of a Martian named Ettil‚ who refuses to invade Earth on the theory that the people of Earth have greater morale than the people of Mars. Ettil had feared that his people were doomed to the same fate as the people in his books: whom at the end of every story were conquered by Earth. When the Martians’ arrive to Earth nothing is as any of them thought it would be. They had been
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Operational Management Part one 1. Building a New Classroom block The school board decide from past experience that the funds in the school coffers would be enough to cover the cost. Once that has been ascertained‚ the building site is identified. Architects design a plan for the new classroom block and send it to the county council for approval. Whwn approaval is received the school obtains a quoutation from the school approved contractor. Te contractor suggests a fix and supply contract
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POLYMER COCNCRETE 1. Introduction Despite being thought of as a modern material‚ concrete has been in use for hundreds of years. The word concrete comes from the Latin concretus‚ which means “mixed together” or compounded. Concrete is an extremely popular structural material due to its low cost and easy fabrication. Concrete is made up of sand or stone‚ known as aggregate‚ combined with cement paste to bind it. Aggregate can be of various sizes. It is broadly categorized as fine (commonly
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BRE Concrete mix design method A popular simplified mix design method is that from BRE. Compressive strength is‚ in general‚ related to durability. The greater the strength the more durable the concrete. To satisfy the required compressive strength‚ a value for water/cement (w/c) ratio is estimated for an appropriate test age (generally 28 days) and cement type. Tables in the BRE mix design handbook are consulted relating aggregate:cement (a/c) ratio‚ workability and water:cement (w/c) ratio for
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Seat No.: _____ Enrolment No.______ GUJARAT TECHNOLOGICAL UNIVERSITY Diploma Engineering Sem. – Ist - Examination – June/July- 2011 Subject code: 310029 Subject Name: Engineering Drawing Date:13/07/2011 Time: 02:30 pm – 05:00 pm Total Marks: 70 Instructions: 1. Attempt all questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks. 4. English version is an authentic. Q.1 A pictorial view of an object is shown in fig.1. Draw to full size
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