Write a detailed note on super plasticizer.
[3 marks]Enlist the major compounds of ordinary Portland cement and briefly describe their importance.
[4 marks]In which cases the nominal mix and design mix is used? Describe step by step procedure of concrete mix design as per IS code.
[7 marks]What are the methods of compaction of concrete?
[3 marks]Define Durability. Explain its significance.
[4 marks]What is self-compacting concrete? And what are the advantages and disadvantages of using it?
[7 marks]What is permeability of concrete? Enlist factors affecting permeability of concrete. Explain any one in detail.
[7 marks]What are the effects of impurities in water on concrete?
[3 marks]Define the term “Bulking of aggregates”. Explain its significance with reference to concrete making. Explain the simple field test to determine the bulking of aggregates.
[4 marks]Describe the dry process of manufacturing of ordinary Portland cement step-wise with the help a flow chart.
[7 marks]Explain Segregations of concrete.
[3 marks]Describe the test for determining standard consistency, initial and final setting time of cement.
[4 marks]Define flakiness and elongation index of aggregate. Explain aggregate impact test.
[7 marks]What does strength in concrete mean? List the different types of concrete strengths.
[3 marks]Explain different types of slumps with sketch
[4 marks]Define workability of concrete. Enlist the different methods for measuring it in the laboratory? Explain any one of them.
[7 marks]Explain need of curing. State different methods of curing.
[3 marks]State the different types of special concrete techniques. Explain the ready mixed concrete with its classification.
[4 marks]Define Creep. Explain factors affecting creep of concrete
[7 marks]What are the essential characteristics of water that can be used for Page 1 of mixing and curing of concrete?
[2 marks]Explain grading of aggregate and its significance
[4 marks]State factors affecting compressive strength of concrete and explain any one in detail.
[7 marks]Define Shrinkage. Explain Plastic shrinkage
[3 marks]Enlist the different admixtures used in concrete construction. Explain the function of any two types of admixtures.
[4 marks]Explain the basic principle on which schmidt rebound hammer works. What are its limitations? Page 2 of
[2 marks]