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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.
Define Vertical Curves - Transportation 1) Vertical curves are used to change the grade of a highway. 2) Most vertical curves take the shape of an equal-tangent parabola.
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Calculate the Daily Standard Production Rate of Equipment An excavator with a bucket capacity of 3-yd 3 has a standard operating cycle time of 40 seconds. The daily standard p
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Q. Explain Tension and compression anchorage length? Tension anchorage length vs. compression anchorage length Tension anchorage length of steel reinforcement in concrete
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what will be the w/c ration and cement/fly ash ration for the particular mix design
What is WBM road. How it is constructed?
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