Select the incorrect statement [ A ] R.C.C has better fire resistance than steel [ B ] R.C.C. structure is economical than steel structure [ C ] Strength of concrete decreases as age increases [ D ] R.C.C can be used for under water and marine structures

Select the incorrect statement
[ A ] R.C.C has better fire resistance than steel
[ B ] R.C.C. structure is economical than steel structure
[ C ] Strength of concrete decreases as age increases
[ D ] R.C.C can be used for under water and marine structures
by

1 Answer

Answer :

[ C ] Strength of concrete decreases as age increases
by

Related questions

Select incorrect statement from the following [ A ] With passage of time, the strength of cement decreases [ B ] With passage of time, the strength of cement increases [ C ] After a period of 24 months, the strength of cement reduces to 50% [ D ] The concrete made with storage deteriorated cement; gains strength with time.

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Last Answer : [ B ] With passage of time, the strength of cement increases

Pick up the incorrect statement from the following: (A) With passage of time, the strength of cement increases (B) With passage of time, the strength of cement decreases (C) After a period of 24 months, the strength of cement reduces to 50% (D) The concrete made with storage deteriorated cement, gains strength with time

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Last Answer : Answer: Option A

Select the incorrect statement from the following In eccentrically loaded columns, [ A ] The tensile strength of concrete is ignored [ B ] Design stress – strain curve for steel in compression is the same as in tension [ C ] The strain at different points in the section will be same [ D ] Plane section remain plane even after bending

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Assertion A: Marine structures are made specially bulky and strong. Reason R: Sea insects result in undermining of the hardest and the soundest building material Select your answer based on the coding system given below: (A) Both A and R is true and R is the correct explanation of A (B) Both A and R is true but R is not the correct explanation of A (C) A is true but R is false (D) A is false but R is true

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The entrained air in concrete [ A ] Increases the strength [ B ] Decreases the resistance to weathering [ C ] Increases the workability [ D ] Decreases the workability

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Select the incorrect statement. Effective angle of shearing resistance (A) Increases as the size of particles increases (B) Increases as the soil gradation improves (C) Is limited to a maximum value of 45° (D) Is rarely more than 30° for fine grained soil

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Last Answer : (C) Is limited to a maximum value of 45°

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Strength of concrete with passage of time (A) Increases (B) Decreases (C) Fluctuates (D) Remains constant

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High temperature (A) Increases the strength of concrete (B) Decreases the strength of concrete (C) Has no effect on the strength of concrete (D) None of these

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Ultimate strength of cold drawn high steel wires (A) Increases with increase in diameter of bar (B) Decreases with increase in diameter of bar (C) Does not depend on diameter of bar (D) None of the above

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If Ac , Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m and c are the modular ratio and maximum stress in the configuration of concrete, the strength of column is (A) cAc + m cAsc (B) c (A - Asc) + m cAsc (C) c [A + (m - 1)ASC] (D) All the above

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Pick up the incorrect statement from the following: (A) Compaction has no effect on the structure of a soil (B) Permeability decreases with increase in the dry density of a compacted soil (C) A wet side compacted soil is more compressible than a dry side compacted soil (D) Dry side compaction soils swell more when given access to moisture

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In case of cement concrete pavements, pick up the incorrect statement (A) Tractive resistance is low (B) Initial cost of construction is high (C) Initial cost of construction is low (D) Visibility during nights is high

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Last Answer : Answer: Option D

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An excess of flaky particles in concrete aggregates (A) Decreases the workability (B) Increases the quantity of water and sand (C) More than 15% are not desirable (D) All the above

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Last Answer : (D) Converts its plasticity into elasticity

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Last Answer : (a) The increase of water cement ratio.

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Beams of uniform strength are preferred to those of uniform section because these are economical for (A) Large spans (B) Heavy weights (C) Light weights (D) Short spans

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Last Answer : (A) Large spans

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Last Answer : (d) Increases with increase in stirrups and longitudinal steels.

High temp_______________the setting time of cement in concrete (a) Increases (b) Decreases (c) No effect (d) None of these

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Last Answer : (b) Decreases

Assertion (A): Activity 57 is critical. Reason (R): Earliest finish time and latest finish time for events 57 are same Select the correct answer. (A) A is correct but R is not correct (B) R is correct but A is not correct (C) Both A and R is correct (D) Both A and R is incorrect

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In a pre-stressed member it is advisable to use (A) Low strength concrete only (B) High strength concrete only (C) Low strength concrete but high tensile steel (D) High strength concrete and high tensile

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Consider the following statements: Percentage of steel for balanced designed of a singly reinforced rectangular section by limit state method depends on (1) Characteristic strength of concrete (2) Yield strength of concrete (3) Modulus of elasticity of steel (4) Geometry of the section. Which of these statements are correct? (a) 2, 3 and 4 (b) 1, 3 and 4 (c) 1, 2 and 4 (d) 1, 2 and 3

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Last Answer : 1,2,4

Design shear strength of concrete is a function of i.Percentage of tension steel ii.Grade of concrete iii.Grade of steel [ A ] i and ii [ B ] ii only [ C ] i and iii [ D ] i, ii and iii

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