1. Which factor affect while selecting the materials for maintenance and repairs
a) Type of structure
b) Environmental condition of that region
c) Location of site
d) All of the above
2. When the steel corrodes the resulting rust occupies a greater volume, this increase in
volume leads into the development of ....stresses in concrete.
a) Compressive
b) Tensile
c) Both a and b
d) None of these
3. Coating of steel reinforcement is also known as
a) Rebar coating
b) Rebar primer
c) Rebar covering
d) None of these
4. Property of coating of steel is
a) It must resist the incoming moisture
b) It must resist the progressive corrosion
c) Easy to handle and apply
d) All of the above
5. Epoxy zinc is an ..... Zinc-rich compound for steel as a ferrous metal
a) Organic
b) Inorganic
c) Both a and b
d) None of these
6. Disadvantage of adhesive material is
a) Decreased stability at low temp.
b) Decreased stability at high temp
c) Cost is very high
d) None of these
7. The main property of adhesive material is
a) It must be able to wet the substrate
b) It must increase the strength after application
c) It must be able to transmit load between two surfaces
d) All of the above
8. Saturated thermoplastic and unsaturated thermoplastic are two groups of
a) Polyester adhesive
b) Water borne adhesive
c) Acrylic adhesive
d) None of these
9. The strength of the acrylic adhesive is measured in.... ways
a) 4
b) 3
c) 2
d) None of these
10. The main polymer used to formulate water-based adhesives is
a) PVAC
b) VAE
c) Styrene-butadiene
d) All of the above
11. Polyvinyl acetate (PVA) is commonly famous as
a) Wood glue
b) White glue
c) School glue
d) All of the above
12. Which adhesive material is ideal for use?
a) Polyvinyl acetate
b) Vinyl acetate co-polymer
c) Polyester adhesive
d) None of the above
13. Vinyl acetate co-polymer is ideal for use in the coating due to their.... quality
a) Non-oxidizing
b) Permanently flexible
c) Both a and b
d) None of these
14. Mortar is typically supplied in..... forms
a) 2
b) 3
c) 4
d) 5
15. Dry ready to use mortar requires the addition of
a) Cement
b) Water
c) Fine aggregate
d) None of these
16. Most commonly, cementitious mortar is used when
a) Constructing walls
b) Fences
c) Walkways
d) All of the above
17. Which improve mortar curing
a) Polymers
b) Cement
c) Fine aggregates
d) None of these
18. ... achieves high strength and hardness after curing
a) Cementitious mortar
b) Polymer modified cementitious mortar
c) Resin Mortar
d) None of these
19. Sealant materials prevent the
a) Passage of air
b) Fluid from passing through material surface
c) Both a and b
d) None of these
20. Basic function of sealant is
a) Fill gap between two or more substance
b) Form a barrier through which other substance cannot pass
c) Maintain sealing properties for an anticipated lifetime
d) All of the above
21. Which sealant is more popular in the construction world?
a) Polysulphide sealants
b) Acrylic based sealants
c) Silicone-based sealants
d) None of these
22. Polyisobutylene is also known as
a) Butyl rubber
b) PIB
c) Both a and b
d) None of these
23. PIB sheets is generally preferred because
a) Easy to use
b) Completely waterproof
c) Ozone resistance and UV resistant
d) All of the above
24. GFRP means
a) Glass fiber reinforced plastic
b) Glass fiber reinforced polymer
c) Glass fiber resin plastic
d) Glass fiber resin polymer
25. Bitumen emulsion is classified into.... types
a) 2
b) 3
c) 4
d) 5
26. Classification of bituminous emulsion is based on
a) Setting time
b) Surface charge
c) Both a and b
d) None of these
27. Latex cement can be applied with
a) Broom
b) Brush
c) Spray or trowel
d) All of the above
28. After the application of Latex cement the surface is generally useable after..... Hrs of
drying time.
a) 2 to 3
b) 4 to 5
c) 6 to 8
d) 10 to 12
29.... Is the type of coating that is composed of synthetic resin or plastic
a) Vinyl coating
b) Epoxy coating
c) Chlorinated rubber coating
d) None of these
30.... The coating is a chemical mix created by polymerizing of two liquid components,
epoxy resin and hardener
a) Vinyl coating
b) Epoxy coating
c) Chlorinated rubber coating
d) None of these
31. Welded wire fabric (WWF) is used in reinforced concrete, notably for
a) Beam
b) Column
c) Slabs
d) None of the above
32. The welded wire mesh is a metal wire screen that is made up of
a) Low carbon steel
b) High carbon steel
c) Stainless steel wire
d) Both a and c
33. Bitumen emulsion is a dispersed liquid consisting of
a) Water
b) Bitumen
c) Emulsion
d) All of the above
34. Epoxy coating requires.... maintenance
a) Low
b) High
c) Both a and b
d) None of these
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