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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.
A retaining wall with its face inclined at 75° with horizontal is 10 m high and retains soil inclined at a uniform surcharge angle of 10°. If the angle of internal friction of the
How to calculate the total loss of prestress As a general guide, it may be taken that total loss of prestress may be in the range of 20 to 25 percent of the initial prestress,
curing of brick masonry
Question What is key meaning of excellence of bentonite slurry in construction of diaphragm walls? Answer Quality of slurry plays a significant role in quality of di
what are the dimensions of a sheet of paper required for plotting a traverse ABCDE with 1 : 250 scale if a margin of 4 cm to the right and left sides and a6 cm margin to the other
Explain what is Stationing - Transportation 1) Stationing concept is used along horizontal alignments for referencing purpose 2) 1 station = 100 feet 3) How do you repres
Q. How can you design Side Slope of bank? Angle of bank should be flatter than angle of repose of pitching material. Angle of repose of sand is 2:1 while that of stone is about
how can I come up with the research on the water bound macadam road construction
Question What are main problems related with prestressed concrete piles ? Answer Origin of Daido piles comes from Japan where these prestressed actual piles are used
Determine the term - Degree of Prestressing Degree of Prestressing It is a measure of the magnitude of the prestressing force related to the resultant stress occurring in
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