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QuestionWhat are the key problems if use pumping for concreting works?
AnswerIn pumping operation, force exerted by pumps have to overcome friction involving concrete and pumping pipes, weight of concrete and pressure head when placing concrete above pumps. In actuality, as only water is pump able, it is water in concrete that transfers force. Major problems associated with pumping are effect of isolation and bleeding. To rectify these adverse effects proportion of cement is increased to improve cohesion sequentially to decrease segregation and bleeding. On other hand, the proper selection of aggregate grading helps to get better pump capability of concrete.
Write a Survey Paper: Write between 7 to 10 pages a survey paper in one of the following topic : ( The Future of HCI. ) For the paper the font size should be 12 points
An F-16 lands on aircraft carrier and its velocity is 63 m/sn. If its decceleration is assumed to be constant and it must stop in 2.0 sec. a) What is final position of plane if i
Determine the term - Final Tension The tension in tendons after losses of prestress have taken place is called as final tension. Final tension is taken to be corresponding to
One nautical mile is described by one latitude minute of arc (there are 60 like minutes to a degree). This equals 1852 meters, and roughly (but coincidentally) 2000 yards or 6000 f
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Soil plug in marine piling system of steel tubular pile with reinforced concrete infill At the time of initial driving process, open-ended steel piles are driven through the s
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Retardation of fresh concrete has numerous benefits as below: (i) A rapid hydration process leads to loss in concrete strength since concrete will have a poorer structure with
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