Description : If 20 kg of coarse aggregate is sieved through 80 mm, 40 mm, 20 mm, 10 mm, 4.75 mm, 2.36 mm, 1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0 kg, 2 kg, 8 kg, ... , the fineness modulus of the aggregate, is (A) 7.30 (B) 7.35 (C) 7.40 (D) 7.45
Last Answer : Answer: Option C
Description : 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
Last Answer : Answer: Option A
Description : If fineness modulus of sand is 2.5, it is graded as (A) Very fine sand (B) Fine sand (C) Medium sand (D) Coarse
Last Answer : Answer: Option B
Description : Index number expressing the relative sizes of both coarse and fine aggregates, is called (A) Proportioning of aggregates (B) Fineness modulus (C) Grading of aggregates (D) None of these
Description : 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 ... D) Fineness modulus is the index number expressing the relative sizes of both coarse and fine aggregates
Last Answer : Option D
Description : Sand that is recommended for R.C.C work should have fineness modulus. (a) 0-2 (b) 2-3.5 (c) 3-4.5 (d) 4-5
Last Answer : (b) 2-3.5
Description : 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
Last Answer : (B) Increase in fineness of cement
Description : The factors which effects the design of concrete mix is (a) Fineness modulus (b) Water cement ratio (c) Slump (d) All of these
Last Answer : (d) All of these
Description : If X, Y and Z are the fineness modulli of coarse, fine and combined aggregates, the percentage (P) of fine aggregates to combined aggregates, is (A) P = [(Z - X)/(Z - Y)] × 100 (B) P = [(X - Z)/(Z - Y)] × 100 (C) P = [(X - Z)/(Z + Y)] × 100 (D) P = [(Z + X)/(Z - Y)] × 100
Last Answer : Option B
Description : If th fineness modules of sand is 3, then the sand is graded as (a) Very fine sand (b) Fine sand (c)Medium sand (d) Coarse sand
Last Answer : (d) Coarse sand
Description : A sand sample has a fineness modulus of 1.95. Whether this sand can be used for concreting? Explain the procedure to bring the fineness modulus in required permissible limits. State its importance.
Last Answer : The given sand sample has a fineness modulus 1.95, which is less than prescribed limit i.e.2.2-3.2. It indicates that sand particles are finer, which is not suitable for satisfactory ... . Well graded sand is also useful for good bonding of particles and related strength criteria of concrete.
Description : Modulus of elasticity of concrete is primarily influenced by [ A ] Elastic properties of aggregate [ B ] Curing of concrete [ C ] Age of concrete [ D ] Mix proportion and type of cement
Last Answer : [ A ] Elastic properties of aggregate
Description : The void ratio of (A) Single size coarse aggregate is roughly 0.45 (B) Graded coarse aggregate is roughly 0.040 (C) Fine aggregate is roughly 0.45 (D) All the above
Last Answer : Answer: Option D
Description : Pick up the correct statement from the following: (A) The maximum size of a coarse aggregate, is 75 mm and minimum 4.75 mm (B) The maximum size of the fine aggregate, is 4.75 mm and minimum 0.075 mm ( ... having particles of size varying from 0.06 mm to 0.002 mm, is known as silt (D) All the ab
Description : The minimum particle size of fine aggregate is (a) 0.0075mm (b) 0.075mm (c)0.75mm (d)0.95m
Last Answer : (b) 0.075mm
Description : 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
Description : In order to prepare a test specimen, it is necessary to (a) Mix the cement and fine aggregate (sand ) dry hand (b) Mix the coarse aggregate (c) Mix water to the cement, fine aggregate and coarse aggregate (d) All of the above
Last Answer : (d) All of the above
Description : The aggregate which pass through 75mm IS sieve and entirely retain on 4.75 IS sieve is known as (a) Cyclopean aggregate (b) Coarse aggregate (c)Fine aggregate (d) Aall-in-aggregate
Last Answer : (b) Coarse aggregate
Description : Pick up the incorrect statement from the following: (A) Concrete for which preliminary tests are conducted, is called controlled concrete (B) Bulking of sand depends upon the fineness of grains (C) Concrete mix 1 : 6 : 12, is used for mass concrete in piers (D) All the above
Description : The value fineness modules for fin sand is (a) 1.1 to 1.3 (b) 1.3 to 1.6 (c)1.6 to 2.2 (d) 2.2 to 2.6
Last Answer : (d) 2.2 to 2.6
Description : The maximum limit of water absorption for aggregate suitable for road construction is (A) 0.4 % (B) 0.6 % (C) 0.8 % (D) 1.0 %
Description : 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 %
Last Answer : (C) 50 %
Description : An ordinary Portland cement when tested for its fineness, should not leave any residue on I.S. sieve No. 9, more than (A) 5 % (B) 10 % (C) 15 % (D) 20 %
Last Answer : (B) 10 %
Description : Explain determination of bulking of fine aggregate with neat sketch.
Last Answer : Determination of bulking of fine aggregate (sand): 1. Take 100 gm. of given sand sample and fill it in measuring cylinder about one-third of its weight. Take this volume of sand V1 ml. 2. Now add ... fig below. Note down the maximum % of bulking and corresponding optimum % of water from it.
Description : Explain procedure to find specific gravity of the fine aggregate in laboratory.
Last Answer : Procedure to find specific gravity of fine aggregate in laboratory: 1. Take 2000 gm. aggregate sample in wire basket. Immerse the basket in water completely and take it out to remove entrapped air. ... ). 8. Repeat all above steps for two more samples to get average specific gravity of aggregate.
Description : State any four properties of fine aggregate.
Last Answer : Properties of fine aggregate: The properties of fie aggregate are stated as follows. 1. Size 2. Source 3. Shape 4. Specific gravity 5. Bulk density 6. Fineness Modulus 7. Cleanliness 8. Silt content 9. Bulking
Description : For the construction of cement concrete floor, the maximum permissible size of aggregate, is (A) 4 mm (B) 6 mm (C) 8 mm (D) 10 mm
Description : Vicat's apparatus is used for (A) Fineness test (B) Consistency test (C) Setting time test (D) Soundness test
Last Answer : (B) Consistency test
Description : Vicat apparatus is used for (A) Fineness test (B) Consistency test (C) Test for setting time (D) Test for tensile strength
Description : Pick up the incorrect statement from the following: (A) The degree of grinding of cement, is called fineness (B) The process of changing cement paste into hard mass, is known as setting of ... (D) The heat generated during chemical reaction of cement with water, is known as heat of hydration
Description : Too much fineness of cement (a) Results cracks in concrete (b) Generates greater heat (c) Develops later strength (d) All the above
Last Answer : (d) All the above
Description : The degree of grinding of cement is called (a) Fineness (b) Soundness (c)Impact value (d) Bulking
Last Answer : (a) Fineness
Description : Le-chatelier apparatus is used for [ A ] Fineness test [ B ] Consistency test [ C ] Soundness test [ D ] Compressive strength test
Last Answer : [ C ] Soundness test
Description : In fineness test on cement, residue left on I.S. sieve no.9 shall not exceed __________ by weight of the sample of cement [ A ] 5% [ B ] 10% [ C ] 15% [ D ] 20%
Last Answer : [ B ] 10%
Description : If 50 kg of fine aggregates and 100 kg of coarse aggregates are mixed in a concrete whose water cement ratio is 0.6, the weight of water required for harsh mix, is (A) 8 kg (B) 10 kg (C) 12 kg (D) 14 kg
Description : 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
Last Answer : (C) 3/5 mean dimension
Description : 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
Last Answer : [ C ] 3/5 mean dimension
Description : The ratio of differenct ingredients (cement, sand and aggregate) in concrete mix of grade M20 is. (a) 1:1:2 (b) 1:1.5:2 (c) 1:2:4 (d) 1:3:6
Last Answer : (b) 1:1.5:2
Description : The ratio of the section modulus of a square section of side B and that of a circular section of diameter D, is (A) 2 /15 (B) 3 /16 (C) 3 /8 (D) /16
Last Answer : (B) 3 /16
Description : A steel bar 5 m × 50 mm is loaded with 250,000 N. If the modulus of elasticity of the material is 0.2 MN/mm2 and Poisson's ratio is 0.25, the change in the volume of the bar is: (A) 1.125 cm3 (B) 2.125 cm3 (C) 3.125 cm3 (D) 4.125 cm
Last Answer : (C) 3.125 cm
Description : A cantilever of length 2 cm and depth 10 cm tapers in plan from a width 24 cm to zero at its free end. If the modulus of elasticity of the material is 0.2 × 106 N/mm2 , the deflection of the free end, is (A) 2 mm (B) 3 mm (C) 4 mm (D) 5 mm
Last Answer : (D) 5 mm
Description : A rectangular bar of width b and height h is being used as a cantilever. The loading is in a plane parallel to the side b. The section modulus is (A) bh3 /12 (B) bh²/6 (C) b²h/6 (D) None of these
Last Answer : (C) b²h/6
Description : Find total number coils in a spring having square and ground ends. Deflection in the spring is 6mm when load of 1100N is applied. Modulus of rigidity is 81370N/mm². Wire diameter and pitch circle diameter are 10mm and 50mm respectively. a) 7 b) 6 c) 5 d) 4
Last Answer : a) 7
Description : A standard steel tape of length 30 m and cross-section 15 1.0 mm was standardised at 25°C and at 30 kg pull. While measuring a base line at the same temperature, the pull applied was 40 kg. If the modulus of elasticity of ... (A) - 0.000909 m (B) + 0.0909 m (C) 0.000909 m (D) None of these
Last Answer : (A) - 0.000909 m
Description : For a given material Young's modulus is 200 GN/m2 and modulus of rigidity is 80 GN/m2 . The value of Poisson's ratio is (A) 0.15 (B) 0.20 (C) 0.25 (D) 0.30
Last Answer : (C) 0.25
Description : A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm² and a volume of 0.039 m3 at 150 kg/cm². The bulk modulus of elasticity of liquid is (A) 400 kg/cm² (B) 4000 kg/cm² (C) (D)
Description : Production rate __________ with increased fineness, with a given energy input to the size reduction machine. (A) Decreases (B) Increases (C) Remains unchanged (D) May increase or decrease; depends on the machine
Last Answer : (A) Decreases
Description : In case of grinding in a ball mill (A) Wet grinding achieves a finer product size than dry grinding (B) Its capacity decreases with increasing fineness of the products (C) Grinding cost and power requirement increases with increasing fineness of the products (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the (A) Physical nature, ash content and fineness of the coal (B) Amount of excess air supplied and load on the boiler (C) Type of burner and combustion chamber (D) All (A), (B) and (C)
Description : The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm2 /gm. (A) 800 (B) 1600 (C) 4000 (D) 8500
Last Answer : (B) 1600