Q1[2 Marks]Properties of Hardened Concrete
List out the properties of hardened concrete. Describe the elastic behavior of harden concrete. What is the effect of gel-space ratio on strength of concrete? Explain.
ENCE 205Bachelor in Civil Engineering · Semester 32 Papers Available
Concrete Technology
Past examination question papers and complete curriculum syllabus for Concrete Technology (ENCE 205), Bachelor in Civil Engineering Semester 3 under Institute of Engineering (IOE), Tribhuvan University.
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Complete questions from each exam session (Regular & Back exams from 2082 to 2069) for Concrete Technology. Click any session paper to expand.
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Institute of Engineering • 2083 Baishakh Board Examination
Q2[8 Marks]Properties of Fresh Concrete and Concreting Operations
(a) Draw plan (showing two perpendicular walls) of odd-even course and elevation of one brick thick wall made with Flemish bond. Explain rat-trap bond with its advantages and disadvantages. [3+3]
(b) Design interior cross wall of a two-storied building to carry 125 mm thick RCC slab with 3.2 m ceiling height. The wall is 4 m long which is stiffened and supported by 3 m wide slab. Live load from roof and floor is 2.5 and 3 respectively. Floor finish is 1.3 for both floor. Take standard brick size as per NBC.
Q3[6 Marks]Testing of Concrete, Quality Assurance and Quality Control
a) What are the deficiencies and failure (causes) in masonry structure? Explain earthquake resisting element used in masonry. [3+4]
b) Explain how stress is calculated in masonry structure under lateral loading. [5]
c) Explain push shear test and diagonal test of masonry.
Curriculum Syllabus & Course Topics
Sourced from TU curriculum portalChapter-wise Units & Micro-Syllabus Topics (6 Units)
1. Concrete and Constituents of Concrete
- 1.1Introduction to concrete and use of concrete in structures
- 1.2Constituents of concrete
- 1.2.1Aggregates (Properties and their gradation)
- 1.2.2Cement: Compound composition of cement (Bogue’s compound) and their properties, hydration of cement, strength of cement
- 1.2.3Water (Quality/requirements of water for concrete)
- 1.2.4Admixtures: Chemical admixtures and mineral admixtures, use of chemical admixtures (Plasticizers, Super-plasticizers, accelerator, retarder, air entraining agents, water proofer), properties, use and different types of mineral admixtures (Fly ash, blast furnace slag, silica fume, rice husk ash, meta-kaolin)
- 1.3Structure of concrete: Concrete as three phase system (aggregate, hydrated cement paste and transition zone phases)
2. Properties of Fresh Concrete and Concreting Operations
- 2.1Water-cement ratio
- 2.2Workability and its tests (Slump test, compaction factor test, Vee-Bee consistency test, flow table test)
- 2.3Segregation, bleeding and their effects
- 2.4Concreting operations (Batching, mixing, handling, placing, compaction, finishing, curing and formwork removal)
- 2.5Concreting in extreme temperatures and its mitigation
- 2.6Mass concreting issues and their mitigation
3. Mix Design of Concrete
- 3.1Compressive strength of concrete and grade designation
- 3.2Variability of concrete strength, characteristic strength and grade of concrete
- 3.3Introduction to nominal Mix
- 3.4Mix design (IS code, British code, ACI methods)
4. Properties of Hardened Concrete
- 4.1Load-deformation behavior of hardened concrete, moduli of elasticity
- 4.2Shrinkage and creep
- 4.3Impact, cyclic loading and fatigue
- 4.4Effect of water cement ratio (Abram’s law, effect of porosity and aggregate size)
- 4.5Effect of gel/space ratio
- 4.6Concrete maturity
- 4.7Durability of concrete: Physical and chemical cause of deterioration, effect of water and permeability, sulphate attack, attack by sea water, alkali silica reaction (AAR/ASR), chloride ion penetration, carbonation, corrosion of steel in concrete
5. Testing of Concrete, Quality Assurance and Quality Control
- 5.1Strength of concrete (Tensile, compressive, shear and bond strength)
- 5.2Compressive strength test
- 5.3Tensile strength test (Direct, splitting and flexural)
- 5.4Acceptance criteria
- 5.5Non-destructive tests (Schmidt rebound hammer test, ultrasonic pulse velocity test, and resistivity test)
- 5.6Quality assurance and quality control; Testing and monitoring
6. Special Types of Concretes
- 6.1Light weight concrete (Aerated concrete, cellular concrete, no fines concrete)
- 6.2High density/heavy weight concrete (Self compacting concrete, ferro- cement concrete)
- 6.3Fiber reinforced concrete (Steel fibers, glass fibers, carbon fibers, organic fibers)
- 6.4Self-healing concrete
- 6.5High performance concrete (High strength concrete, abrasion resistant concrete)
- 6.6Emerging concrete technologies
Examination Scheme & Marks Distribution
Evaluation Structure
- Final Board Theory Exam: 60 Marks (Pass mark: 24)
- Internal Assessment: 40 Marks (Pass mark: 16)
- Practical / Lab Exam: 25 or 50 Marks (Continuous lab evaluation + viva, where applicable)
* This is the general current IOE 60/40 scheme; verify course-specific details in the syllabus above.
Exam Preparation Guidelines
- Review the 2 available past examination papers to identify recurring patterns, core problem types, and chapter weightage.
- Practice design calculations, standard code provisions, and illustrative cross-section sketches.
- Structure answers with labeled diagrams, concise bullet points, and highlight final answers in numerical solutions.
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