CE-302 Construction Materials - Jun 2024 Question Paper

Under each question, How to answer lists the points an answer should cover, outlined by CampusPrep from the syllabus. Check the details against your textbook.

1. 7 Marks
   aWhat are the ingredients of concrete and explain the chemical compositions of various ingredients and mention types of concrete?
   How to answer

   • List main ingredients: cement, fine aggregate, coarse aggregate, water, admixtures
   • Explain chemical composition of cement (CaO, SiO2, Al2O3, Fe2O3, etc.) and Bogue's compounds
   • Mention various types of concrete: plain, reinforced, prestressed, lightweight, high-strength
2. 7 Marks
   bExplain about any three special concretes with their specifications in detail where that can be used in construction.
   How to answer

   • Select three special concretes (e.g., Self-Compacting Concrete, Fiber-Reinforced Concrete, Ready-Mix Concrete)
   • Detail material composition and special specifications for each
   • Describe specific construction applications and advantages
3. 7 Marks
   aExplain about Quarrying and Dressing of stone.
   How to answer

   • Define quarrying and describe methods (digging, wedging, blasting)
   • Define dressing of stone and its purpose (transport, appearance, uniform bedding)
   • Briefly list types of stone dressing (pitched, hammer dressed, chisel drafted)
4. 7 Marks
   bExplain about retardation and deterioration of stone.
   How to answer

   • Define deterioration/decay of stones and retardation of decay
   • Causes of deterioration: atmospheric impurities, temperature changes, frost, rain, living organisms
   • Measures for stone preservation and retardation of weathering
5. 7 Marks
   aExplain about application of wood and wood products in detail.
   How to answer

   • Role of wood/timber as structural material (beams, columns, trusses, framework)
   • Various wood products: plywood, particle board, hardboard, veneer, laminated wood
   • Specific building applications (doors, windows, formwork, flooring, furniture)
6. 7 Marks
   bExplain about types of Gypsum board and their uses.
   How to answer

   • Definition and composition of gypsum boards
   • Types: regular/standard, moisture-resistant (green board), fire-resistant (Type X), soundproof board
   • Applications: false ceilings, partition walls, thermal and acoustic insulation
7. 14 Marks
   Explain Clearly about nature and structure of glass with diagram and its molecular structure.
   How to answer

   • Explain physical and chemical nature of glass (supercooled liquid, isotropic, amorphous)
   • Describe molecular network: tetrahedral SiO4 units and random network model
   • Provide schematic sketch showing crystalline quartz vs amorphous silica network
8. 7 Marks
   aExplain the following in detail: Asbestos pipes
   How to answer

   • Composition: mixture of asbestos fibers and Portland cement
   • Properties: lightweight, corrosion-resistant, smooth interior surface
   • Uses: rainwater pipes, drainage, water supply mains, ventilation ducts
9. 7 Marks
   bExplain the following in detail: PVC Materials
   How to answer

   • Polymer chemistry of Polyvinyl Chloride (rigid and flexible PVC)
   • Physical/chemical properties: resistance to corrosion, non-conductive, lightweight
   • Applications: plumbing pipes, electrical conduit, window frames, flooring
10. 7 Marks
    aExplain about in detail. Characteristics of Ideal Paints
    How to answer

    • Define paint and its primary purpose
    • List key characteristics: high covering power/hiding capability, easy workability, reasonable drying time
    • Durability, resistance to weathering/cracking, uniform finish, non-toxic
11. 7 Marks
    bExplain about in detail. Composition of oil paints
    How to answer

    • List key constituents: Base (white lead, zinc oxide), Vehicle (linseed oil)
    • Pigments (coloring matter) and Fillers/Extenders (barytes, gypsum)
    • Driers (litharge) and Solvents/Thinners (turpentine) with functions
12. 7 Marks
    aBriefly discuss with specifications on following terms: Distempers
    How to answer

    • Define distemper (water paint with base of powdered chalk and glue)
    • Distinction between dry distemper and oil-bound washable distemper
    • Specifications, application method, and surface preparation
13. 7 Marks
    bBriefly discuss with specifications on following terms: Varnish
    How to answer

    • Define varnish (homogeneous solution of resin in oil, alcohol, or turpentine)
    • Ingredients: resins (copal, shellac), solvents, driers
    • Types: oil varnish, spirit varnish, water varnish, spar varnish; main uses
14. 7 Marks
    aWrite short notes on: Sound proofing materials
    How to answer

    • Principle of sound insulation vs sound absorption
    • Common materials: mineral wool, acoustic tiles, foam, cork, fiberglass
    • Construction techniques and applications in building design
15. 7 Marks
    bWrite short notes on: Chloride pipes
    How to answer

    • Identify as Chlorinated Polyvinyl Chloride (CPVC) / PVC piping
    • Manufacturing and composition with additional chlorine content
    • Temperature and pressure resistance, plumbing applications (hot and cold water supply)