Hello Diploma Students in this article we have provided Concrete Technology Mcq Civil Engineering With Answers pdf. In this Concrete Technology Mock Test Questions We have Selected 35 Important Questions from Previous Year Papers and Made A possible Set pf Questions which can Help Students in Preparation for Their Exams.
This Concrete Technology Mcq Pdf Is Ideal for Candidates who are in 2nd Year of Diploma in Civil Engineering By Referring this Concrete Technology Notes Pdf Diploma in Civil Engineering Students Can Practice for their Upcoming Exams. We Have Also Provided Concrete Technology MCQ Questions and Answers pdf Link at the end of the Quiz You can Download it for Future reference.
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22305 Concrete Technology Mock Test Questions
1) physical properties of OPC. (d) Polymer
(a) Fineness
(b) Initial and Final setting time
(c) Soundness
(d) Compressive Strength
(e) All of the above
Correct!
Wrong!
2) methods of concrete mix design
(a) High strength concrete mix design method
(b) Fineness modulus method
(c) Trial and error method
(d) Maximum density method
(e) All of the above
Correct!
Wrong!
3) In sequence, write concreting operations
(a) Batching of materials – Mixing of materials – Curing of concrete – Finishing of concrete – Transportation of concrete – Placing of concrete – Compaction of concrete-
(b) Batching of materials – Placing of concrete – Compaction of concrete – Curing of concrete – Finishing of concrete – Mixing of materials – Transportation of concrete
(c) Batching of materials – Mixing of materials – Transportation of concrete – Placing of concrete – Compaction of concrete – Curing of concrete – Finishing of concrete
(d) Batching of materials – Compaction of concrete – Curing of concrete – Finishing of concrete – Mixing of materials – Transportation of concrete – Placing of concrete
Correct!
Wrong!
4) purposes of using accelerating admixtures in the concrete.
16) materials used for filling joints in concrete
16) materials used for filling joints in concrete
(a) It is used for cracks resistant structures.
(b) To accelerate the initial setting of concrete
(c) It is used for sulphate resistant structures.
(d) It used in concreting of nuclear power plant, sea walts, break waters, etc
Correct!
Wrong!
5) uses of low heat cement.
(a) Reduce the required period of curing
(b) Permit early removal of formwork in cold climates.
(c) Speed of the work can be boosted by early removal of formwork
(d) It is used for mass concrete works such as dams
Correct!
Wrong!
6) necessity of supervision for concreting operations
(a) It is necessary to avoid any type of delay in concrete work
(b) It is very effective in controlling bad workmanship.
(c) It is required to get overall quality in concrete work at site.
(d) It is also beneficial to reduce wastage of concrete during concreting.
(e) All of the above
Correct!
Wrong!
7) objectives of concrete mix design.
(a) No dust and noise pollution.
(b) To achieve a specified compressive strength of concrete.
(c) To reduce wastage of concrete by correct proportioning
(d) Useful in urban areas where there is a lack of space.
(e) Both (c) & (d)
Correct!
Wrong!
8) characteristics of ready mix concrete.
(a) RMC can be ordered in bulk at a time.
(b) It becomes economical in large projects.
(c) It can be easily transported at a longer distance without a setting of concrete.
(d) Quality of concrete is uniform and high.
(e) All of the above
Correct!
Wrong!
9) effects of hot weather on concrete.
(a) Due to hot weather, concrete shows a rapid rate of hardening, which results in difficulty in transportation of concrete.
(b) Water may get absorbed by formwork, aggregate or ground due to excessive heat.
(c) Continuous curing is required to keep humidity and to avoid further development of cracks.
(d) Air entrained in concrete may get expelled due to temperature, hence workability may reduce additionally.
(e) All of the above
Correct!
Wrong!
10) advantages of vacuum dewatered concrete floor.
(a) It reduces the time for finishing the floor.
(b) Smooth and clean finish surface.
(c) Joint can also weaken the concrete.
(d) Abrasion can cause dust and cleanliness problems.
(e) Both (a) & (b)
Correct!
Wrong!
11) disadvantages of vacuum dewatered concrete floor.
(a) The porosity which there in the concrete allows water, oil and grease to seep into thereby weakening the structure Answer
(b) It reduce permeability and increase durability of concrete floor
(c) Decrease the total shrinkage.
(d) Increase the strength of concrete. Compressive strength is increased by 10 to 50%.
(e) All of the above
Correct!
Wrong!
12) Tricalcium Silicate (C3S)
(a) 4 CaO Al2O3 Fe2O3
(b) 3 CaO SiO2
(c) 2 CaO SiO2
(d) 3 CaO Al2O3
Correct!
Wrong!
13) Dicalcium Silicate (C2S)
(a) 3 CaO Al2O3
(b) 3 CaO SiO2
(c) 2 CaO SiO2
(d) 4 CaO Al2 O3 Fe2 O3
Correct!
Wrong!
14) Tricalcium Aluminate (C3A)
(a) 3 CaO Al2 O3
(b) 2 CaO SiO2
(c) 4 CaO Al2 O3 Fe2 O3
(d) 3 CaO SiO2
Correct!
Wrong!
15) requirement of good aggregate.Â
(a) It should be well graded with minimum voids.
(b) A good aggregate should be durable to resist atmospheric variation.
(c) It should have a rough texture for better bonding.
(d) It should be a non-reactive type to avoid alkali- aggregate reaction.
(e) All of the above
Correct!
Wrong!
16) materials used for filling joints in concrete
(a) Fibre and fibre products
(b) Sponge rubber
(c) Cork
(d) Polymer
(e) All of the above
Correct!
Wrong!
17) List four substances in water having deleterious effects.Â
(a) Suspended particles
(b) Sugar content
(c) Algae
(d) Mineral oil
(e) All of the above
Correct!
Wrong!
18) Suggest the degree of workability in terms of slump for Pavements using pavers
(a) 15-65 mm
(b) 25-75 mm
(c) 35-85 mm
(d) 45-95 mm
Correct!
Wrong!
19) Suggest the degree of workability in terms of slump for Heavily reinforced sections
(a) 25-75 mm
(b) 50-100 mm
(c) 100-150 mm
(d) 150-200 mm
Correct!
Wrong!
20) Causes of Segregation
(a) Inaccurate water cement ratio
(b) Insufficient mixing of concrete.
(c) Lean mix i.e. less cement content.
(d) Delay in finishing of freshly placed concrete mix
Correct!
Wrong!
21) Causes of Bleeding of concrete
(a) More height of concrete placing.
(b) Inaccurate concrete mix proportion with higher w/c ratio
(c) Use of more flaky aggregates
(d) Excessive or over vibration.
(e) Both (a) & (b)
Correct!
Wrong!
22) factors affecting workability of concrete.
(a) Water content (W/C ratio)
(b) Mix proportions of concrete
(c) Size of aggregate
(d) Surface texture of aggregate
(e) All of the above
Correct!
Wrong!
23) Vacuum concrete
(a) Hydro power plants
(b) Industrial floor sheds
(c) Bridges, ports and harbours
(d) Cooling towers
(e) All of the above
Correct!
Wrong!
24) Fiber reinforced concrete
(a) Mass concrete structures like dams, long span bridges, etc
(b) Construction of airfield, road pavements, industrial floorings, bridge decks, etc
(c) Pre-stressed concrete
(d) Applicable in construction of explosive resistive structures
Correct!
Wrong!
25) Limitations of Rebound hammer test
(a) Size and shape of specimen also affect hammer impact.
(b) Surface moisture of concrete may give inaccurate rebound numbers.
(c) Rebounding the hammer may get affected due to the roughness of the concrete surface.
(d) Type of concrete ingredients i.e. cement, coarse aggregate may affect rebound number.
(e) All of the above
Correct!
Wrong!
26) The ratio of various ingredients (cement, sand, aggregates) in concrete of grade M 200, is
(A) 1 : 2 : 4
(B) 1 : 3 : 6
(C) 1 : 1½ : 3
(D) 1 : 1 : 2
Correct!
Wrong!
27) joints in concrete structures, are provided
(A) To reduce the tensile stresses likely to be developed due to evaporation of water
(B) To minimize the change in the dimensions of the slab
(C) To minimize the necessary cracking
(D) All the above
Correct!
Wrong!
28) Uses of Vacuum concrete
(a) Pre-stressed concrete
(b) Construction of airfield, road pavements, industrial floorings, bridge decks, etc
(c) Hydro power plants
(d) Pumped concrete for floors and slabs
Correct!
Wrong!
29) Causes of Segregation
(a) Lean mix i.e. less cements content
(b) Inaccurate water cement ratio
(c) Longer distance transportation
(d) Inaccurate concrete mix proportion with higher w/c ratio
(e) Both (b) & (c)
Correct!
Wrong!
30) Uses of High performance concrete
(a) Bridges, ports and harbours
(b) Applicable in construction of explosive resistive structures.
(c) Thin walled structures like pardi, retaining wall etc
(d) Mass concrete structures like dams, long span bridges, etc.
Correct!
Wrong!
31) Uses of Accelerating Admixture
(a) It is beneficial where slow hardening of concrete is necessary i.e. in mass concrete structures.
(b) It is applicable where delay in construction is not allowed i.e. road construction
(c) It is useful where slow setting of concrete is required i.e. in extreme hot weather concreting
(d) None of the above
Correct!
Wrong!
State whether the following statements are True or False
32) Fineness of cement is the degree of grinding of cement particles during its manufacturing process, called as fineness of cement
(a) True
(b) False
Correct!
Wrong!
33) Bleeding is one form of segregation in which water gets accumulated over settled concrete mass, called bleeding.
(a) True
(b) False
Correct!
Wrong!
34) Bulking of sand is defined as increase in volume of given sand due to surface moisture present on surface of particles
(a) True
(b) False
Correct!
Wrong!
35) Concrete Mix Design is the process of determining the quantity of materials required for a given grade of concrete, known as concrete mix design.Â
(a) True
(b) False
Correct!
Wrong!
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