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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.
Methods of Constructing Roads in Marshy Areas: The following methods are adopted for constructing roads in marshy areas: (a) Removal of soft soil and replacement with good
Question 2: A software company is considering translating its program into French. Each unit of the program sells for $50 and incurs a variable cost of $10 to produce. Currently, t
The stresses at failure on the failure plane in a cohesionless soil mass were: Shear stress = 4 kN/m 2 ; normal stress = 10 kN/m 2 . Verify the resultant stress on the failure plan
Q. What do you mean by Stock Verification Sheets? The proper custody and accountal of stores is the prime duty and function of an executive or the stockholder. To ensure this v
State the procedure of prestressing When these wires cool down, concrete is poured in the moulds in which these tendons are provided in a stretched condition. Using this proces
any new innovative metods to protct building from disater
why is weight of raft not considered in structural design of raft and beam
Question Why are voids filled with lightweight infilling material in raft base of pumping stations ? Answer To decrease dead load and therefore to decrease settleme
Question If on-site slump test fails, is it necessary that engineers allow a contractor to continue concreting works ? Answer This is an extremely traditional question raised by
Q. Function of waterproof (or separation) membrane for concrete carriageway A layer of waterproof (or separation) membrane is usually placed between sub-base and concrete slab
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