Give the physical characteristics of 53 grade OPC.
OPC means Ordinary Portland Cement. If the 28 days strength is not less than 53 N/mm2. It is called as 53 grade cement as per IS: 4031-1988.
OPC 53 grade cement is manufactured as per specification laid down by ministry of railways under IRS:T40-1985. It is a very finely ground cement with high C3S content designed to develop high early strength.
How standard consistency test is done on cement? Explain the procedure briefly.
What is an air entraining agents? Give some examples. What is efflorescence in concrete structure?
What are the initial and final setting times of cement ? How are they experimentally determined ?
What is under-reinforcement of a beam?
What are the ill effect of irrigation?
What factors influence the choice of an irrigation method?
How do cross drainage structures impact infrastructure development?
What is reservoir capacity and how is it determined?
What is the significance of hydraulic conductivity in groundwater studies?
What are the benefits of using drop structures in irrigation canals?
