State the effect of shape and size of aggregate on strength of concrete.
Shape of aggregate on strength of concrete:- The shape of aggregate influence workability in good measure. The importance of shape of the aggregate will be of great significance in the case of present day high strength and high performance concrete when we use very low w/c in the order of about 0.25.
Size of aggregate on strength of concrete :- The bigger the size of the aggregate the less is the surface area and hence less amount of water is required for wetting the surface and less matrix or paste is required for lubricating the surface to reduce internal friction
What is an air entraining agents? Give some examples. What is efflorescence in concrete structure?
Explain Kelly Ball to measure the workability of concrete. Mention the limitation of the test.
What are the common materials used for constructing headworks?
What tools are used for measuring rainfall and runoff?
How does land use affect surface runoff?
What is land reclamation and why is it important?
What is RCC, and why is it commonly used in construction?
What is the role of soil properties in irrigation design?
Describe Lacey’s theory of uniform flow and its significance.
What factors influence the choice of an irrigation method?
What is under-reinforcement of a beam?
