Explain the hydration process of the Cement.

Enlist Lab testing of the cement and define the initial and final setting time of the cement.

Classify the admixture and explain in brief any two of them.

Write a short note on the classification of aggregates.

What are the different types of mineral admixture? Explain any two mineral admixtures.

What are the different methods of cement production? Explain anyone in detail with the flow diagram.

What are the different methods to measure workability? Explain any one of them.

Explain the importance of compaction of concrete. What are the different methods of compaction?

Give a broad classification of methods adopted for curing of concrete and explain the water-curing method.

State and explain various operations involved during the concreting from mixing to finishing of concrete surface.

Define workability. State and explain factors affecting workability.

Match the pair i) Low workability 1) 50-100mm ii) Medium workability 2) More than 150mm iii) High workability 3) 25-75 mm iv) Very high workability 4) 100-150 mm

What is the chemical composition of ordinary cement; state its percentage and importance.

What do you mean by hydration of cement?

Explain step by step procedure for manufacture of cement.

How will you test quality of cement on site?

State mechanical properties of cement and explain any two in detail.

State physical properties of cement and explain any two in detail.

What is water-cement ratio and what is its importance.

Explain fineness and gradation of aggregates using sieve analysis.

State various admixtures used in concrete, explain any one detail.

Explain role of accelerators, retarders in cement concrete.

State various test performed on fresh concrete, explain any two in detail.

Explain importance of curing of concrete.

Explain wet process of manufacturing of Portland cement.

Enlist: i) four types of cement and ii) four cement manufacturer in India

Calculate the fineness modulus for following data obtained from the sieve analysis on the sample of aggregate. Total weight of aggregate taken for sieve analysis = 1000 gm. Sieve Size (mm) 4.75 2.36 1.18 0.6 0.3 0.15 Weight retained (gm) 0 100 250 350 200 100

Classify the admixture and explain in brief any two of them.

Give examples of plasticizer and super-plasticizers.

Explain air entraining agents and factors affecting amount of air entrainment in a mix.

Enlist factors affecting workability of concrete and explain in brief any two of them.

Enlist methods adopted for compaction of the concrete and explain compaction by vibration.

Give broad classification of methods adopted for curing of the concrete and explain water curing method.

Enlist tests commonly employed to measure workability and slump cone test in detail.

What do you meant by segregation and bleeding of concrete?

Explain the effect of admixture on workability of concrete.

Explain the field testing of cement.

Enlist: i) Four types of cement and ii) Four cement manufacturer in India.

Calculate the fineness modulus for following data obtained from the sieve analysis on the sample of aggregate. Total weight of aggregate taken for sieve analysis= 1050 gm. Sieve Size (mm) 4.72 2.36 1.18 0.6 0.3 0.15 Weight retained (gm) 0 250 250 250 200 100

Explain the role of admixture in concrete.

Classify the admixture and explain in brief any two of them.

Explain air entraining agents and factor affecting amount of air entrainment in a mix.

List the sequential stages in manufacture of concrete and explain batching of concrete.

Define the workability of concrete and explain any two factors affecting the workability of concrete.

Give broad classification of methods adopted for curing of the concrete and explain water curing method.

Explain compaction factor test for measuring workability of concrete.

Suggest the degree of workability for the following situation: i) Concrete used for road structures vibrated by power operated machine. ii) Concrete used for road structures vibrated by hand operated machine. iii) Normal reinforced concrete manually compacted. iv) For pumping and tremie placing of concrete.

Write short note on segregation and bleeding of concrete.

Explain importance of abrasion testing also explain abrasion testing.

Explain rebound hammer test with its limitations.

Explain the relationship between compressive strength and tensilestrength of concrete.

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

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

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

Define concrete mix design. Enlist objectives in mix design.

Explain DOE method of concrete mix design.

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

Using Indian Standard recommended guidelines, design a concrete mixfor a reinforced concrete structure to be subjected to the mild exposure conditions for the following requirements: A) Stipulations for proportioning i) Grade designation: M30 ii) Standard deviation, s = 5 iii) Type of cement: OPC 53 grade conforming to IS 8112 iv) Workability : 75 mm (slump) v) Degree of supervision: Good vi) Exposure condition: Moderate vii) Type of aggregate: Angular coarse 20 mm aggregate, viii) Minimum and maximum cement content 300 kg/m3and 450 kg/m3 respectively B) Test data for materials i) Specific gravity of cement: 3.15 ii) Specific gravity: (I) Coarse aggregate - 2.74 (II) Fine aggregates - 2.74 iii) Water absorption: (I) Coarse aggregates - 0.5 % (II) Fine aggregates - 1.00 % iv) Free surface moisture : (I) Coarse aggregates - Nil (absorbed moisturealso nil) (II) Fine aggregates - Nil v) Sieve analysis (I) Coarse aggregate (II) Fine aggreatate : Conforming to grading zone I (III) Design considerations : Tables provided in question.

Enlist the factors influencing concrete mix design and explain in detail.

Describe the cold and hot weather concreting.

Discuss the self-compacting concrete (SCC) with its advantages.

Describe the types of vibrators used for compaction of concrete.

Write short note on : i) Roller compacted concrete ii) Under water concreting iii) Ready mix concrete

Explain the ferrocement technology with its applications.

Define durability of concrete. Explain its significance and discuss thefactors affecting the durability of concrete.

What do you mean by retrofitting of concrete and explain use of fiber reinforced polymer concrete for retrofitting.

Write short note on Carbonation of concrete.

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

Explain in detail corrosion monitoring techniques of reinforcement andpreventive measures against corrosion.

Define the term permeability of concrete. What measures should be taken to reduce permeability of concrete?

Write short note on: i) Creep of concrete ii) Shrinkage of concrete iii) Modulus of elasticity of concrete

Describe any two factors affecting the strength of concrete.

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

Enlist non destructive tests for concrete. Explain the principal of rebound hammer with neat sketch. Discuss the limitations of rebound hammer test.

Calculate the compressive strength of following specimens of concrete: i) Cube 1: 150mm × 150mm × 150mm, Crushing load 580 kN ii) Cube 2: 150mm × 150mm × 150mm, Crushing load 567 kN iii) Cylinder 1: 150 mm diameter × 300 mm height, Crushing load 452 kN iv) Cylinder 2: 150 mm diameter × 300 mm height, Crushing load 462 kN

Calculate the split tensile strength of following specimens of concrete: i) Cylinder 1: 150 mm diameter × 300 mm height, Splitting load 135 kN ii) Cylinder 2: 150 mm diameter × 300 mm height, Splitting load 145 kN iii) Cylinder 3: 150mm diameter × 300mm height, Splitting load 155 kN iv) Cylinder 4: 150 mm diameter × 300 mm height, Splitting load 175 kN

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

Write step by step procedure for concrete mix design by using IS 10262 method.

Design a concrete for grade M30 using IS code method for following data: [Detailed parameters provided in paper]

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

Write short note on: i) Ready mix concrete (RMC) ii) Under water concreting

Enlist concrete compaction equipments and explain any two of them.

Write short note on: i) Fiber reinforced concrete ii) Ferrocement technique

What do you meant by light weight concrete and discuss its types.

State the durability of concrete. Enlist the factor affecting the durability of concrete and explain any two of them.

Write short note on: i) Attack by sea water on concrete ii) Chloride attack on concrete iii) Carbonation of concrete

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

What do you meant by the retrofitting of concrete structures? Discuss the application of fiber reinforced polymer (FRP) and polymer impregnated concrete for the retrofitting of concrete structures.

Write short note on: i) Shrinkage of concrete. ii) Creep of Concrete.

Explain rebound hammer test with its limitations.

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

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

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

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

Define concrete mix design. Enlist objectives in mix design.

Explain DOE method of concrete mix design.

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

Using Indian Standard recommended guidelines, design a concrete mix for a reinforced concrete structure to be subjected to the mild exposure conditions for the following requirements: a) Stipulations for proportioning i) Grade designation: M30 ii) Standard deviation, s = 5 iii) Type of cement: OPC 53 grade conforming to IS 8112 iv) Workability: 75 mm (slump) v) Degree of supervision: Good vi) Exposure condition: Moderate vii) Type of aggregate: Angular coarse 20 mm aggregate, viii) Minimum and maximum cement content = 300 kg/m3 and 450 kg/m3 respectively b) Test data for materials i) Specific gravity of cement: 3.15 ii) Specific gravity of: 1) Coarse aggregate - 2.74 2) Fine aggregates - 2.74 iii) Water absorption: 1) Coarse aggregates - 0.5 % 2) Fine aggregates - 1.00 % iv) Free surface moisture: 1) Coarse aggregates - Nil (absorbed moisture also nil) 2) Fine aggregates - Nil v) Sieve analysis 1) Coarse aggregate: IS Sieve sizes in mm Analysis of coarse aggregate Percentage of different fractions Remarks I II I II Combined Confirming of (60%) (40%) (100%) table 2 of IS 383 20 100 100 60 40 100 10 0 71.2 0 28.5 28.5 4.75 9.40 3.7 3.7 2.36 0 2) Fine aggregate: Conforming to grading zone I 3) Design considerations: Table 1: From IS 10262: Maximum water content per cubic meter ofconcrete: Sr. No Nominal Maximum Size of aggregate in mm Maximum water content in kg 1 10 208 2 20 186 3 30 165 Table 2: From IS 10262; Volume of Coarse Aggregate per UnitVolume of Total Aggregate: Sr.No Nominal Maximum size of aggregate in mm Volume of coarse aggregate per unit volume of total aggregate for different zone of fine aggregate Zone I Zone II Zone III Zone IV 1 10 0.50 0.48 0.46 0.44 2 20 0.66 0.64 0.62 0.60 3 30 0.75 0.73 0.71 0.69 Table 3: From IS 456, Different Exposure conditions for reinforcedconcrete Exposure Minimum cement content (kg/m3) Maximum water cement ratio Minimum grade of concrete Mild 300 0.55 M20 Moderate 300 0.50 M25 Severe 320 0.45 M30 Very Severe 340 0.45 M35 Extreme 360 0.40 M40

Enlist the factors influencing concrete mix design and explain in detail.

Describe the cold and hot weather concreting.

Discuss the self-compacting concrete (SCC) with its advantages.

Describe the types of vibrators used for compaction of concrete.

Write short note on: i) Roller compacted concrete ii) Under water concreting iii) Ready mix concrete

Explain the ferrocement technology with its applications.

Define durability of concrete. Explain its significance and discuss factors affecting the durability of concrete.

What do you mean by retrofitting of concrete and explain use of fiber reinforced polymer concrete for retrofitting.

Write short note on Carbonation of concrete.

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

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

Define the term permeability of concrete. What measures should be taken to reduce permeability of concrete?

Calculate the compressive strength of following specimen, of concrete. Sr. No. i) Cube 1 : 150 mm × 150 mm × 150mm Crushing load 600kN ii) Cube 2 : 150 mm × 150 mm × 150mm Crushing load 630kN iii) Cube 3 : 150 mm × 150 mm × 150mm Crushing load 625kN

Calculate the split tensile strength of following specimen of concrete. Sr. No. i) Cylinder 1 : 150mm diameter × 300 mm height Crushing load 130kN ii) Cylinder 2 : 150mm diameter × 300 mm height Crushing load 140kN iii) Cylinder 3 : 150mm diameter × 300 mm height Crushing load 150kN

Write short note on : i) Shrinkage of concrete. ii) Creep of Concrete.

Enlist non destructive tests for concrete. Explain core test along with its advantages and limitations.

Explain the principal of rebound hammer with neat sketch. Enlist the limitations of rebound hammer test.

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

Define concrete mix design and state objectives in mix design?

Enlist the factors influencing concrete mix design and explain any one of them.

Enlist various methods available for concrete mix design and explain the step by step procedure for concrete mix design IS 10262 method.

Design a concrete for grade M30 using IS code method for following data: Grade designation: M30; Standard deviations: 5.00; Factor based on the grade of concrete, X: 6.50; Type of cement: OPC 53 grade conforming to IS 12269; Workability: 75 mm (slump); Exposure conditions: Moderate (for plain concrete); Degree of supervision: Good; Maximum cement content: 450 kg/m3; Type of aggregate: Angular coarse aggregate; Specific gravity of cement: 3.00; Specific gravity of coarse aggregate and fine aggregate: 2.65; 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.

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

Write short note on i) Ready mix concrete (RMC) ii) Under water concreting

What do you meant by roller compacted concrete. Give real life examples/application of roller compacted concrete.

Discuss concrete vibrators and compaction equipments.

Define lightweight concrete? Classify the various types of lightweight concrete by their method of production.

Discuss the self compacting concrete (SCC) with its advantages, material and examples of SCC mixes.

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

Discuss factors affecting the durability of concrete.

Discuss ingredients/factors influencing the permeability of concrete.

Write short note on : i) Attack by sea water on concrete ii) Carbonation of concrete

What are the symptoms and diagnosis of distress of concrete?

Explain in detail corrosion monitoring technique for reinforcement and preventive measures against corrosion.

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

Enlist factor affecting the strenght of concrete and explain role of water cement (W/C) ratio in strength of concrete.

Explain the relation between tensile and compression strength concrete.

Write short note on: i) Shrinkage of Concrete ii) Creep of Concrete

Calculate the compressive strength of following specimen of concrete. Sr. No. Specimen and size Crushing load in kN i) Cube 1 : 150 mm X 150 mm X 150 mm 750 ii) Cube 2 : 150 mm X 150 mm X 150 mm 760 iii) Cylinder 1 : 150 mm diameter X 300 mm height 525 iv) Cylinder 2 : 150 mm diameter X 300 mm height 540

Explain experimental test to evaluate flexural strenght of concrete.

Explain the factors affecting the measurement of pulse velocity.

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

Enlist various methods available for concrete mix design and explain the step by step procedure for concrete mix design by using IS 10262 method.

Design a concrete for grade M30 using IS code method for following data: Parameter: Details Grade designation: M30 Standard deviation,s: 5.00 Factor based on the grade of concrete, X: 6.50 Type of cement: OPC 53 grade conforming to IS 12269 Workability: 50 mm (slump) Exposure conditions: Severe (for RCC) Degree of supervision: Good Maximum cement content: 450 kg/m3 Type of aggregate: Angular coarse aggregate Specific gravity of cement: 3.15 Specific gravity of coarse aggregate and fine aggregate: 2.65 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

Enlist the factors influencing concrete mix design and explain any one of them.

Write short note on. i) Ready mix concrete ii) Roller compacted concrete

What particular precautions one should take while concreting in: i) Extremely cold weather and ii) Extremely hot weather.

Explain underwater concreting by tremie method.

Write short note on: i) Fiber reinforced concrete ii) Ferrocement technique

Discuss the self compacting concrete (SCC) with its advantages, material and examples of SCC mixes.

Define lightweight concrete? Classify the various types of lightweight concrete by their method of production.

Explain the permeability of concrete.

Enlist the factors affecting durability of concrete. Explain any two in detail.

Write short note on: i) Attack by sea water on concrete ii) Chloride attack on concrete

Discuss shotcrete and grouting technique to repair the defects/ cracks of concrete.

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

Discuss the application of fiber reinforced polymer (FRP) and polymer impregnated concrete for the retrofitting of concrete structures.

Explain the effect of water cement ratio and effect of maximum size of aggregate on the strength of concrete.

Explain the relation between compressive and tensile strength of concrete

Enlist non destructive tests for concrete. Explain rebound hammer test along with its limitations.

Explain flexural strength test on concrete with neat sketch

Define concrete mix design. Enlist objectives in mix design as well as factors affecting the mix design.

Enlist the various methods of concrete mix design. Write step by step procedure for concrete mix design by using DOE method.

Design a concrete for grade M25 using IS code method for following data: Parameter : Details Grade designation : M25 Standard deviation,s : 4.00 Factor based on the grade of concrete, X : 5.50 Type of cement : OPC 53 grade conforming to IS 8112 Workability : 75 mm (slump) Exposure conditions : Moderate (for RCC) Degree of supervision : Good Maximum cement content : 450 kg/m3 Type of aggregate : Angular coarse aggregate Specific gravity of cement : 3.15 Specific gravity of coarse aggregate and fine aggregate : 2.70 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 (50%) II (50%) Combined (100%) Remarks 20 100 100 50 50 100 Conforming to Table 7 of IS 383 10 2.80 78.30 1.4 39.15 40.55 4.75 0 8.70 0 4.35 4.35 Fine aggregate : Conforming to grading Zone II of Table 9 of IS 383 Water Content per m3 of concrete for 50 mm slump : Sr. Nominal maximum size of aggregate Maximum water content No. (mm) (kg/m3) i) 10 208 ii) 20 186 iii) 40 165 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 Minimum cement Maximum Minimum grade of No. Content (kg/m3) 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

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

Write short note on : i) Roller compacted concrete ii) Under water concreting

Explain the cold and hot weather concreting.

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

What do you meant by light weight concrete and discuss its types.

Define durability of concrete. Explain its significance and discuss the factors affecting the durability of concrete

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

Write short note on : i) Evaluation of cracks in concrete and its necessity ii) Symptoms and diagnosis of distress iii) Corrosion monitoring and preventive measures

Discuss the application of fiber reinforced polymer (FRP) and polymer impregnated concrete for the retrofitting of concrete structures.

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

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

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

Explain rebound hammer test with its limitations.

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

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

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

Explain the factors affecting the concrete mix design.

Explain DOE method of concrete mix design.

Using IS code method design a concrete for grade M35 for following data : Parameter : Details Grade designation : M35 Standard deviations : 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/m3 Type of aggregate : Angular coarse aggregate Specific gravity of cement : 3.15 Specific gravity of coarse aggregate and fine aggregate : 2.70 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 fraction 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 of 4.75 0 8.70 0 4.35 4.35 IS 383 Fine aggregate : Conforming to grading Zone II of Table 9 of IS 383

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

Describe the types of vibrators used for compaction of concrete.

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

Describe the cold and hot weather concreting.

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

Enlist special concreting techniques? Explain under water concreting.

Explain the ferrocement technology with its applications.

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

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

What are the symptoms and diagnosis of distress of concrete?

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

What do you meant by retrofitting of concrete and explain use of fiber reinforced polymer concrete for retrofitting.