The type of aggregates not suitable for high strength concrete and for pavements subjected to tension, is (A) Rounded aggregate (B) Irregular aggregate (C) Angular aggregate (D) Flaky aggregat

The type of aggregates not suitable for high strength concrete and for pavements subjected to
tension, is
(A) Rounded aggregate
(B) Irregular aggregate
(C) Angular aggregate
(D) Flaky aggregat
by

1 Answer

Answer :

Answer: Option A
by

Related questions

Workability of concrete for a given water content is good if the aggregates, are (A) Rounded aggregate (B) Irregular aggregate (C) Angular aggregate (D) Flaky aggregate

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Last Answer : Answer: Option A

Pick up the correct statement from the following: (A) According to the petrological characteristics, concrete aggregates are classified as heavy weight, normal weight and light weight (B) According to the shape of the particles, concrete aggregates are classified as rounded irregular, angular and flaky (C) According to the surface texture of the particles, the concrete aggregates are classified as glassy, smooth, granular, rough, crystalline, honey combed and porous (D) All the above

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Workability of concrete for a given water content is good, if the aggregates are [ A ] Rounded [ B ] Irregular [ C ] Angular [ D ] Flaky

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Last Answer : [ A ] Rounded

The aggregates of __________________-shape have maximum voids (a) Irregular (b) Angular (c)Rounded (d) Flaky

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The aggregates of __________________-shape have manimum voids (a) Irregular (b) Angular (c)Rounded (d) Flaky

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For the improvement of work ability of concrete , the shape of aggregate recommended is (a) Irregular (b) Angular (c) Round (d) Flaky

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The type of aggregates of same nominal size, which contain less voids when compacted, are (A) Rounded spherical (B) Irregular (C) Flaky (D) None of these

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If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm, the particular aggregate will be flaky if its minimum dimension is less than (A) 20.5 mm (B) 30.5 mm (C) 40.5 mm (D) 50.5 mm

Description : If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm, the particular aggregate will be flaky if its minimum dimension is less than (A) 20.5 mm (B) 30.5 mm (C) 40.5 mm (D) 50.5 mm

Last Answer : Answer: Option C

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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In order to obtain the best workability of concrete, the preferred shape of aggregate is (A) Rounded (B) Elongated (C) Angular (D) All of the above

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Pick up the correct statement from the following: (A) Plain cement concrete is equally strong in compression as well as in tension (B) Slump test is performed to check concrete strength (C) Curing of concrete is done for proper compaction of cement (D) Fineness modulus is the index number expressing the relative sizes of both coarse and fine aggregates

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Pick up the correct statement from the following: (A) An increase in water content must be accompanied by an increase in cement content (B) Angular and rough aggregates reduce the workability of the concrete (C) The slump of the concrete mix decreases due to an increase in temperature (D) All the above

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The coarse aggregate which possess the property of good interlocking are [ A ] rounded shape [ B ] elongated shape [ C ] angular shape [ D ] none of the above

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An aggregate is said to be flaky, if its least dimension is less than (A) 2/3 mean dimension (B) 3/4 mean dimension (C) 3/5 mean dimension (D) 5/8 mean dimension

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Last Answer : (C) 3/5 mean dimension

An aggregate which passes through 25 mm I.S. sieve and is retained on 20 mm sieve, is said to be flaky if its least dimension is less than (A) 22.5 mm (B) 18.5 mm (C) 16.5 mm (D) 13.5 m

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An aggregate is said to be flaky if its least dimension is less than (A) 1/5th of mean dimension (B) 2/5th of mean dimension (C) 3/5th of mean dimension (D) 4/5th of mean dimension

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Last Answer : Answer: Option C

A flaky aggregate is said to be elongated if its length is (A) Equal to the mean size (B) Twice the mean size (C) Thrice the mean size (D) Four times the mean size

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An aggregate is said to be flaky, if its least dimension is less than [ A ] 2/3 mean dimension [ B ] 3/4 mean dimension [ C ] 3/5 mean dimension [ D ] 5/8 mean dimension

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The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be (A) Between 150 to 300 kg/cm2 (B) Between 350 to 600 kg/cm2 (C) Between 150 to 500 kg/cm2 (D) Below 200 kg/cm2

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The strength and quality of concrete depends upon (i)Grading of aggregates (ii)Shape of aggregates (iii)Surface area of aggregates (iv)Surface texture of aggregates [ A ] i, ii and iv [ B ] ii, iii and iv [ C ] i, iii and iv [ D ] i, ii, iii and iv

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The base of a column is subjected to moment. If the intensity of bearing pressure due to axial load is equal to stress due to moment, then the bearing pressure between the base and the concrete is (a) Uniform compression throughout (b) Zero at one end and compression at the other end (c) Tension at one end and compression at the other end (d) Compression, verying as a parabolic profile

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A concrete block subjected to shear stresses, then the failure may result by [ A ] Diagonal tension [ B ] Longitudinal tension [ C ] Diagonal compression [ D ] None of the above

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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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Strength of concrete increases with (A) Increase in water-cement ratio (B) Increase in fineness of cement (C) Decrease in curing time (D) Decrease in size of aggregate

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C.R.R.I. charts are used to obtain a relationship between strength of concrete and (A) Water cement ratio (B) Workability (C) Grading of aggregate (D) Fineness modulus

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Strength of cement concrete primarily depends upon (A) Quality of water (B) Quantity of aggregate (C) Quantity of cement (D) Water-cement

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The deleterious materials present in the aggregate (a) Prevent normal hydration of cement (b) Reduce the strength and durability of concrete. (c) Modify the setting action and cause efloresecence. (d) All of the above

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Rapid hardening cement is used (a) Where high early strength is desired (b) Where form work is to be removed as early as possible (c) For construction of road pavements. (d) All of the above

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Pick up the correct statement from the following: (A) The ratio of total volume of voids in soil aggregates to the total volume of aggregate, is called Porosity (B) Water retained by the interstices due to molecular attraction, is called pellicular water (C) Sum of the percentage of specific yield and specific retention is 100 (D) All the above

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The percentage of the aggregate of F.M. 2.6 to be combined with coarse aggregate of F.M. 6.8 for obtaining the aggregates of F.M. 5.4, is (A) 30 % (B) 40 % (C) 50 % (D) 60 %

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For preparing a test-specimen, it is necessary (A) To mix cement and fine aggregate by dry hand (B) To mix coarse aggregates (C) To mix water to the cement, fine aggregates and coarse aggregates (D) All the above

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The aggregate containing moisture in pores and having its surface dry, is known as (A) Moist aggregates (B) Very dry aggregates (C) Dry aggregates (D) Saturated surface dry aggregate

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Reinforcement in cement concrete slab of road pavements, is placed (A) Longitudinally (B) Transversely (C) Longitudinally and transversely (D) In the form of welded wire mesh

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Last Answer : Answer: Option D

Tie bars in cement concrete pavements are at (A) Expansion joints (B) Contraction joints (C) Warping joints (D) Longitudinal joints

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Last Answer : Answer: Option D

Which of the following is considered to be the highest quality construction in the group of black top pavements? (A) Mastic asphalt (B) Sheet asphalt (C) Bituminous carpet (D) Bituminous concrete

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Expanded metal is (A) Manufactured from steel sheets (B) Used for reinforced concrete in road pavements (C) Measured in term of SWM (short way mesh) and LWM (long way mesh) (D) All the above

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