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Advanced Concrete Technology (Elective II) (October 2010)

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Total No. of Questions : 12] [Total No. of Pages : 2 [3864]-112 B.E. (Civil) P1331 ADVANCED CONCRETE TECHNOLOGY (Elective - II) (2003 Course) Time : 3 Hours] [Max. Marks :100 Instructions to the candidates: 1) All questions are compulsory. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of electronic pocket calculator allowed. 6) Assume suitable data, if necessary. 7) Your answers will be valued as a whole. 8) Solve Q1 or Q2, Q3 or Q4, Q5 or Q6, from section I, Q7 or Q8, Q9 or Q10, Q11 or Q12 from Section II. Q1) a) b) c) Q2) a) b) c) Q3) a) b) c) Q4) a) b) c) Q5) a) b) SECTION - I Explain the process, hydration of cement. [6] Explain the grading curves of aggregates. [6] Explain the relationship between cement, aggregate and bond strength.[6] OR Write a note on water requirement for hydration process of cement. [6] Explain the gel space ratio. [6] Explain alkali aggregate reaction. [6] Explain Light weight concrete and ultra light weight concrete. Explain sulphur concrete and sulphur infiltrated concrete. Write a note on waste material based concrete. OR Explain vacuum concrete and mass concrete. Explain high strength concrete and high performance concrete. Write a note on Recycled concreting. [6] [6] [4] [6] [6] [4] Design a concrete mix, M25 by IS 10262-1982 for following data. [10] Maximum size of aggregate = 20 mm, Fine aggregates confirm to Zone-III Compaction factor = 0.9, Quality control = good, type of exposure = mild, Water absorption for both aggregate = 1%, free moisture content = 2%. Specific gravity of OPC=3.15 and that of both aggregates = 2.7, Slump=50mm. Explain the nuclear method and infrared thermo-graphy method of nondestructive testing. [6] OR P.T.O. Q6) a) b) Q7) a) b) c) Q8) a) b) c) Q9) a) b) c) Q10)a) b) c) Q11)a) b) Q12)a) b) Design fly ash cement concrete mix, M50 by IS 10262-1982 for following data. Maximum size of aggregate=20mm, Fine aggregates confirm to Zone-III. Compaction factor = 0.9, Quality control = good, type of exposure = mild, Water absorption for both aggregate = 1%, free moisture content = 2%. Specific gravity of OPC=3.15 and that of both aggregates = 2.7, Slump = 80 mm. [10] Explain the break off maturity method and stress wave propagation method of non destructive testing. [6] SECTION - II Explain the major parameter affecting fiber interaction with homogeneous uncracked matrix with axial stress and shear stress. [6] Explain the natural fibers with their mechanical properties in tension and bending. [6] Explain the metallic fiber with their properties. [6] OR Explain the major parameter affecting fiber interaction with homogeneous cracked matrix with axial stress and shear stress. [6] Explain carbon fibers and glass fibers. Mention its uses. [6] Explain the properties of polymeric fiber. [6] Explain properties of hardened SFRC under compression, tension and flexure. [6] Explain Properties of hardened GFRC under compression, tension and flexure. [6] Explain the techniques for toughness measurement for FRC. [4] OR Explain the Properties of hardened polymeric fiber concrete under compression, tension and flexure. [6] Explain the compliance mechanics. [6] Write a note on SIFCON development. [4] Explain the Precast concrete pole with reference to Material requirement, Analysis and design principals, Manufacturing method, Testing methodology and Quality control. [10] Explain the term Ferro-cement with reference to its material requirements, casting process, testing and its application. [6] OR Explain with schematic diagram the construction of chimney using slip form construction technique. [10] Explain the rehabilitation of heritage structure. [6] [3864]-112 E E 2 E

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Additional Info : 2003 Course
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