(SEM V) THEORY EXAMINATION 2023-24 MODERN CONSTRUCTION MATERIALS

Subject Code: KCE052

Subject Name: Modern Construction Materials

Course: B.Tech (Semester V)

Maximum Marks: 100

Duration: 3 Hours

Exam Year: 2023–24

Sections: A, B, and C

SECTION A – Short Answer Questions (2 × 10 = 20 Marks)

Attempt all questions briefly.

a. What are smart building materials?
b. Discuss fly ash bricks.
c. Name two types of waste materials.
d. Explain geosynthetics.
e. What is nuclear concrete?
f. Define prefabricated systems in construction.
g. Explain polymer concrete composite.
h. Name one property that is enhanced by infiltration of sulphur in concrete.
i. What are polyurethane membranes?
j. What is PVC (Polyvinyl Chloride)?
 

SECTION B – Medium-Length Questions (10 × 3 = 30 Marks)

Attempt any three of the following.

Explain soil-cement blocks and how their production process contributes to sustainability.

What characterizes bituminous material? Discuss its primary application.

What is ferrocement? How does ferrocement enhance durability?

Define fiber-reinforced polymers (FRPs) and explain how they improve mechanical strength.

Define sound insulation and its significance in building design.
 

SECTION C – Long / Analytical Questions (10 × 5 = 50 Marks)

Q3. Composite Materials

a. Explain RFPC (Reinforced Fiber Polymer Concrete) and its applications in construction.
OR
b. Explain the classification of glass-reinforced gypsum (GRG).

Q4. Metals & Lightweight Concrete

a. List common metals used in construction and explain why they are preferred.
OR
b. Discuss the properties of lightweight concrete that differentiate it from regular concrete.

Q5. Fibres & Refractory Materials

a. Discuss different types of fibres used in construction materials.
OR
b. Explain heat-resisting and refractory concrete.

Q6. Polymers & Sulphur Concrete

a. Define polymers. Explain how they contribute to durability and sustainability in modern materials.
OR
b. Define sulphur concrete and describe its composition.

Q7. Waterproofing & Finishes

a. What are waterproofing materials? How have advancements in modern materials improved effectiveness?
OR
b. Discuss key advantages of polymer-based finishes for flooring.
 

Key Topics to Prepare

Smart & Sustainable Materials

Smart materials: Self-healing concrete, phase change materials, and shape memory alloys.

Fly ash bricks: Lightweight, eco-friendly, and reduce carbon footprint.

Waste materials: Recycled aggregates, plastic waste, demolition debris.

Advanced Composites

Geosynthetics: Geotextiles, geomembranes, used for soil stabilization and drainage.

Polymer concrete: Uses resin binders; offers high chemical resistance.

RFPC & FRP: Enhanced strength, flexibility, and corrosion resistance.

Specialized Concretes

Nuclear concrete: Used for radiation shielding in nuclear structures.

Sulphur concrete: Made with sulphur as a binder, offering acid resistance.

Refractory concrete: Withstands high temperatures in furnaces and chimneys.

Lightweight concrete: Made with expanded aggregates like perlite or vermiculite.

Modern Systems & Finishes

Prefabrication: Modular components produced off-site for fast, clean construction.

Polyurethane membranes: Provide waterproofing in roofs and basements.

PVC & polymer finishes: Used in flooring, piping, and protective coatings.

Study Tips

Focus on key definitions — Each short question is 2 marks; precise answers (2–3 lines) work best.

Use diagrams — e.g., FRP structure, soil-cement block setup, waterproofing layers.

Relate materials to applications — smart materials (bridges, sensors), FRP (reinforcement), geosynthetics (roads).

Revise chemical and mechanical properties — durability, resistance, sustainability.

Prepare brief notes on modern eco-friendly trends — green concrete, recycled materials, energy-efficient designs.