Description : Excess quantity of water (a) Makes the concrete mix harsh (b) Makes the concrete mix unworkable (c) Causes segregation in concrete (d) Causes bleeding in concrete.
Last Answer : both c&d
Description : Insufficient quantity of water (a) Makes the concrete mix harsh (b) Makes the concrete mix unworkable (c) Causes segregation in concrete (d) Causes bleeding in concrete.
Last Answer : both a&b
Description : Pick up the correct statement from the following: (A) Continuous grading is not necessary for obtaining a minimum of air voids (B) The omission of a certain size of aggregate is shown by ... in concrete increases the workability but also increases the liability to segregation (D) All the above
Last Answer : Answer: Option D
Description : Internal friction between the ingredients of concrete, is decreased by using (A) Less water (B) Fine aggregates (C) Rich mix (D) More water and coarse aggregates
Description : The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called (A) Segregation (B) Bleeding (C) Bulking (D) Creep
Last Answer : Answer: Option B
Description : Pick up the correct statement from the following: (A) Segregation is necessary for a workable concrete (B) Consistency does not affect the workability of concrete (C) If the concrete mix is dry, the slump is maximum (D) None of these
Description : The internal friction between the ingredients to concrete is minimized by (a) Adopting coarse aggregates (b) Using more water (c) Reducing the surface area (d) All of these
Last Answer : (d) All of these
Description : Difficulty obtaining a job as a social studies teacher?
Last Answer : answer:THe umbrella organization for independent day schools in the US, The National Association of Independent Schools (NAIS) has a long and lovely list of jobs available in Ill. http://careers.nais. ... we had a terrific experience. North Shore Country Day School is an exemplar of a member school
Description : What is the difficulty in obtaining aluminium from alumina?
Last Answer : Pure alumina melts at 2323K. At this temperature, aluminium vapourises and there will be considerable loss. It consumes more energy and also molten aluminium is not a very good conductor of electricity.
Description : The risk of segregation is more for (A) Wetter mix (B) Larger proportion of maximum size aggregate (C) Coarser grading (D) All the above
Description : Explain two causes of each i) Segregation ii) Bleeding of concrete
Last Answer : Causes of Segregation: 1. Inaccurate water cement ratio. 2. Improper mixing of concrete ingredients. 3. Longer distance transportation. 4. More height of concrete placing. 5. Excessive or over ... Lean mix i.e. less cements content. 5. Delay in finishing of freshly placed concrete mix.
Description : How the bleedin' heck do I produce a Euro symbol on an American HP Pavilion?
Last Answer : € Hold down the ALT key and while holding it down type 0128 on the number pad… release ALT and there it is.
Description : Segregation is responsible for (A) Honey-combed concrete (B) Porous layers in concrete (C) Surface scaling in concrete (D) All the above
Last Answer : (D) All the above
Description : Too wet concrete may cause (A) Weakness of concrete (B) Excessive laitance (C) Segregation (D) All the above
Description : The increased cohesiveness of concrete, makes it (A) Less liable to segregation (B) More liable to segregation (C) More liable to bleeding (D) More liable for surface scaling in frosty weather
Last Answer : Answer: Option A
Description : Separation of water or water sand cement from a freshly concrete, is known (A) Bleeding (B) Creeping (C) Segregation (D) Flooding
Description : To prevent segregation, the maximum height for placing concrete, is (A) 100 cm (B) 125 cm (C) 150 cm (D) 200 cm
Description : The property of the ingredients to separate from each other while placing the concrete is called (A) Segregation (B) Compaction (C) Shrinkage (D) Bulking
Description : A concrete using an air entrained cement (A) Has strength less than 10% to 15% (B) Has more resistance to weathering (C) Is more plastic and workable (D) Is free from segregation and bleeding
Last Answer : Answer: Option C
Description : A badly mixed cement concrete results in (A) Segregation (B) Bleeding (C) Honey combing (D) None of these
Description : To prevent segregation the concrete should to be thrown from a height of more than. (a) ½ m (b) 1m (c) 1.5m (d) 2m
Last Answer : (b) 1m
Description : Segregation of concrete (a) Increases the strength of concrete (b) Decreased the strength of concrete. (c) Not effect to strength of concrete. (d) None of these.
Last Answer : (b) Decreased the strength of concrete.
Description : In order to avoid segregation, the concrete should not be thrown from a height (a) Agree (b) Disagree (c) Not known (d) None of these
Last Answer : (a) Agree
Description : Segregation in concrete results in (a) Honey combing (b) Porous Layers (c) Surface scaling (d) All the above
Last Answer : (d) All the above
Description : The continuous strain, which the concrete undergoes due to application of external loads is called [ A ] Creep [ B ] Bleeding [ C ] Workability [ D ] Segregation
Last Answer : [ A ] Creep
Description : The separation of water or water cement mixture from the freshly laid concrete is known as [ A ] Workability [ B ] Segregation [ C ] Bleeding [ D ] Creep
Last Answer : [ C ] Bleeding
Description : In order to avoid segregation, fresh concrete should be dropped from a height of [ A ] Less than one meter [ B ] Less than two metres [ C ] More than one metre [ D ] More than two metres
Last Answer : [ A ] Less than one meter
Description : Ice is slippery when a man walks on it because a.Increase of pressure causes it to melt b.Ice is brittle c.There is no friction d.It is very chill e.Its surface is smooth
Last Answer : a. Increase of pressure causes it to melt
Description : On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be (A) Downwards at its upper end (B) Upwards at its upper end (C) Perpendicular to the wall at its upper end (D) Zero at its upper end
Last Answer : (D) Zero at its upper end
Description : On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be (A) Towards the wall at its upper end (B) Away from the wall at its upper end (C) Upwards at its upper end (D) Downwards at its upper end
Last Answer : (C) Upwards at its upper end
Description : Shock resisting steels should possess high (A) Hardness (B) Toughness (C) Tensile strength (D) Wear resistance
Last Answer : (B) Toughness
Description : Slow feedback, high costs, and difficulty in measuring effects on sales are disadvantages of which promotion mix ingredient? A)Advertising B)Public relations C)Sales management D)Sales promotion E)Personal selling
Last Answer : A)Advertising
Description : Pick up the in-correct statement from the following: The soils which contain montmorillonite minerals (A) Swell more when wet (B) Shrink more when dry (C) Possess high plasticity (D) Possess high coefficient of internal coefficient
Last Answer : (D) Possess high coefficient of internal coefficient
Description : 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 ... glassy, smooth, granular, rough, crystalline, honey combed and porous (D) All the above
Description : For constructing a terrazzo floor, Pick up the incorrect statement from the following: (A) A base course is prepared as in cement concrete flooring (B) A 32 mm thick layer of cement concrete ... final grinding is over, oxalic acid mixed with water is spread over and rubbed hard with soft material
Description : Pick up the correct statement from the following: (A) A pile is a slender member which transfers the load through its lower end on a strong strata (B) A pile is a slender member which ... A pile is a cylindrical body of concrete which transfers the load at a depth greater than its width
Description : Pick up the incorrect statement from the following: (A) The width of the wall is constructed thicker at the base in a stepped fashion (B) A long vertical load transferring concrete structure is ... ) The pile which transfers the load to a hard rock bed at certain depth is called load bearing
Description : Which one of the following statements is not correct with respect to PSC beams? (a) Loss due to shrinkage is proportional to water-cement ratio used in concrete (b) Loss due to creep is ... to the modulus of elasticity of concrete (d) Loss due to friction occurs in post tensioned concrete members
Last Answer : (c) Loss due to elastic deformation is directly proportionally to the modulus of elasticity of concrete
Description : For M 150 mix concrete, according to I.S. specifications, local bond stress, is (A) 5 kg/cm2 (B) 10 kg/cm2 (C) 15 kg/cm2 (D) 20 kg/cm
Description : Minimum number of 50 kg cement bags per cubic metre of concrete for a mix corresponding to crushing strength 280 kg/cm2 at 28 days, are (A) 5.0 (B) 6.5 (C) 7.0 (D) 7.5
Description : Which of the following represents a carpet of sand-bitumen mix without coarse aggregates? (A) Mastic asphalt (B) Sheet asphalt (C) Bituminous carpet (D) Bituminous concrete
Description : For the construction of R.C.C. slabs, columns, beams, walls, etc. the grade of concrete mix used, is (A) 1 : 3 : 6 (B) 1 : 1½ : 3 (C) 1 : 2 : 4 (D) 1 : 1 : 2
Last Answer : (C) 1 : 2 : 4
Description : The shrinkage of concrete (A) Is proportional to water content is the mix (B) Is proportional to cement concrete (C) Increases with age of concrete (D) All the above
Description : 1% of voids in a concrete mix would reduce its strength by about (A) 5 % (B) 10 % (C) 15 % (D) 20 %
Last Answer : (A) 5 %
Description : After casting, an ordinary cement concrete on drying (A) Expands (B) Mix (C) Shrinks (D) None of these
Last Answer : (C) Shrinks
Description : Pick up the correct statement from the following: (A) Insufficient quantity of water makes the concrete mix harsh (B) Insufficient quantity of water makes the concrete unworkable (C) Excess quantity of water makes the concrete segregated (D) All the above
Description : M 150 grade of concrete approximates (A) 1 : 3 : 6 mix (B) 1 : 1 :2 mix (C) 1 : 2 : 4 mix (D) 1 : 1.5 : 3 mix
Last Answer : (B) 1 : 1 :2 mix
Description : Pick up the correct statement from the following: (A) The weight of ingredients of concrete mix, is taken in kilograms (B) Water and aggregates are measured in litres (C) 20 bags of cement make one tonne (D) All the above
Description : For the construction of the retaining structures, the type of concrete mix to be used, is (A) 1 : 3 : 6 (B) 1 : 2 : 4 (C) 1 : 1½ : 3 (D) 1 : 4 : 8
Description : If the slump of a concrete mix is 60 mm, its workability is (A) Very low (B) Low (C) Medium (D) High