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EndsemMay 20252019 patternSE Civil

Concrete Technology SPPU Endsem Question Paper May 2025

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated Concrete Technology questions
Subject code
201010
Pattern
2019 pattern
Exam
Endsem
Session
May 2025
Max. marks
70
Time
2½ Hours
Semester
IV
Paper code
[6402]-8

Printed for: S.E. (Civil)

Instructions to the candidates

  1. Answer Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8.
  2. Figures to the right indicate full marks.
  3. Neat diagrams must be drawn wherever necessary.
  4. Use of non programmable calculator is allowed in the examination.
  5. Your answers will be valued as a whole.
  6. If necessary assume suitable data and indicate clearly.
  7. Use of IS codes 10262,456 is not allowed.

Questions

  1. Q1

    1. a)

      Explain the compressive strength of concrete. How it is determined in laboratory?

      Also asked:Nov 2025

      [6]
    2. b)

      Explain the relationship between compressive strength and tensile strength of concrete.

      Also asked:Nov 2025

      [6]
    3. c)

      State the various types of non-destructive tests carried, on hardened concrete. Explain ultrasonic pulse velocity test with its limitations.

      Also asked:Nov 2025

      [6]

  2. Q2

    1. a)

      Explain rebound hammer test with its limitations.

      Also asked:Nov 2025

      [6]
    2. b)

      Explain the stress-strain relationship of concrete with neat sketch.

      Also asked:Nov 2025

      [6]
    3. c)

      Define creep of concrete. What are the factors affecting on creep of concrete?

      [6]

  3. Q3

    1. a)

      What do you mean by concrete mix design? What are the objectives in mix design?

      Also asked:Nov 2025

      [6]
    2. b)

      Explain the factors affecting the concrete mix design.

      Also asked:Nov 2025

      [5]
    3. c)

      Explain DOE method of concrete mix design. 2

      Also asked:Nov 2025

      [6]

  4. Q4

    1. a)

      Using IS code method design a concrete for grade M35 for following data: Parameter : Details Grade designation : M35 Standard deviation,s : 5.00 Factor based on the grade of concrete,x : 6.50 Type of cement : OPC 53 grade conforming to IS 8112 Workability : 75 mm(slump) Exposure conditions : Very severe (for RCC) Degree of supervision : Good Maximum cement content : 450 kg/m 3 Type of aggregate : Angular coarse aggregate Specific gravity of cement : 3.15 Specific gravity of coarse aggregate and : 2.70 fine aggregate Water absorption of coarse aggregate : 0.50 % Water absorption of fine aggregate : 1.00 % Free surface moisture for coarse aggregate : Nil Free surface moisture for fine aggregate : Nil Sieve Analysis Coarse aggregate Analysis of coarse Percentage of different fractions IS Sieve aggregate fraction (mm) I II I II Combined Remarks (50 %) (50 %) (100 %) 20 100 100 50 50 100 Conforming 10 2.80 78.30 1.4 39.15 40.55 to Table 7 4.75 0 8.70 0 4.35 4.35 of IS 383 Fine aggregate: Conforming to grading Zone II of Table 9 of IS 383 Water content per m 3 of concrete of 50 mm slump: Sr. Nominal maximum size of aggregate Maximum water content No. (mm) (kg/m 3 ) i) 10 208 ii) 20 186 iii) 40 165 3 Volume of coarse aggregate per unit volume of total aggregate for water cement/ water-cementitious material ratio of 0.30: Sr. Nominal maximum Volume of coarse aggregate per unit volume of total No. size of aggregate aggregate for different zones of fine aggregate (mm) Zone III Zone II Zone I i) 10 0.56 0.54 0.52 ii) 12.5 0.58 0.56 0.54 iii) 20 0.68 0.66 0.64 Approximate air content: Sr. Nominal maximum size of Entrapped air, as % of volume of No. aggregate (mm) concrete i) 10 1.0 ii) 12.5 0.8 iii) 20 0.5 Minimum cement content, maximum W/C and minimum grade of concrete for different exposures with normal weight aggregates of 20 mm nominal maximum size: Sr. Exposure Minumum cement Maximum Minimum grade of No. content (kg/m 3 ) W/C concrete i) Mild 300 0.55 M20 ii) Moderate 300 0.50 M25 iii) Severe 320 0.45 M30 iv) Very severe 340 0.45 M35 v) Extreme 360 0.40 M40

      Also asked:Nov 2025

      [13]
    2. b)

      What do you mean by: i) Mean strength ii) Variance iii) Standard deviation iv) Coefficient of variation

      Also asked:Nov 2025

      [4]

  5. Q5

    1. a)

      Describe the cold and hot weather concreting.

      Also asked:Nov 2025

      [6]
    2. b)

      What is light weight concrete? How it can be achieved in practice?

      [6]
    3. c)

      Describe the types of vibrators used for compaction of concrete.

      Also asked:Nov 2025

      [6]

  6. Q6

    1. a)

      Write a short note on: i) Fiber reinforced concrete ii) Geo-polymer concrete

      [8]
    2. b)

      Enlist special concreting techniques? Explain under water concreting.

      [5]
    3. c)

      Explain the ferrocement technology with its applications. 4

      Also asked:Nov 2025

      [5]

  7. Q7

    1. a)

      Explain the durability of concrete? What effect the ‘water- cement ratio makes on durability?

      [5]
    2. b)

      Write short note on: i) Sulphate attack on concrete ii) Chloride attack on concrete iii) Carbonation of concrete

      Also asked:Nov 2025

      [12]

  8. Q8

    1. a)

      What are the symptoms and diagnosis of distress of concrete?

      [5]
    2. b)

      Explain in detail corrosion monitoring techniques of reinforcement and preventive measures against corrosion.

      Also asked:Nov 2025

      [6]
    3. c)

      What do you meant by retrofitting of concrete? Discuss the use of fiber reinforced polymer concrete for retrofitting. 

      Also asked:Nov 2025

      [6]