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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.
explain tie lines?
wbm road
Explain the Shrink Factor of Soil In addition to the swell factor and its associated load factor, soil also has a shrink factor. While the first two relate the volume of an equ
Q. Physical evaluation of food grains? Food grains are judged for quality by their physical, chemical and microbiological examination. The physical examination includes chec
Determine the Statements about Unit Area or Borrow Pit? Ans: I. Sometimes called Average Depth II. Works well for volumes for building sites and surface mines III. Needs
Question Is it necessary that stiff or soft fenders be designed for berthing in piers? Answer Elasticity of fenders is related to ability to release stored energy duri
Question-What are three key types of r einforcement used in pre stressing ? Answer- (i) Spalling reinforcement - Spalling stresses are established behind loaded
discussion of each bitumen test, its significance and importance in understanding and working with bitumen
Define Limitations of Radiography - Underwater Inspection of Bridge? i. Radiography is a costly and time consuming method, which re- quires extensive safety measures to be adop
A flow rate of 200 gpm of oil with u=1.5 x 10-3 lb-sec/ft2 and p=1.7 slug/ft3 occurs in a 4-in pipe. Determine the Reynolds number. Classify the flow as laminar or turbulent. What
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