Description : Concrete is unsuitable for compaction by a vibrator if it is (A) Dry (B) Earth moist (C) Semi-plastic (D) Plastic
Last Answer : Answer: Option D
Description : Concrete is unsuitable for compaction by vibration if it is [ A ] Semi – plastic [ B ] Plastic [ C ] Earth moist [ D ] Dry
Last Answer : [ B ] Plastic
Description : To indicate proper control of consistency of a freshly mixed concrete for pavement construction, the slump should be between (A) 3 to 5 cm (B) 4 to 6 cm (C) 5 to 7 cm (D) 7 to 10 cm
Description : While compacting the concrete by a mechanical vibrator, the slump should not exceed (A) 2.5 cm (B) 5.0 cm (C) 7.5 cm (D) 10 cm
Last Answer : Answer: Option B
Description : Pick up the correct statement from the following: (A) Higher workability indicates unexpected increase in the moisture content (B) Higher workability indicates deficiency of sand (C) If the concrete mix is dry, the slump is zero (D) All the above
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 : In slump test, each layer of concrete is compacted by a steel rod 60 cm long and of 16 mm diameter for (A) 20 times (B) 25 times (C) 30 times (D) 50 time
Description : For Ordinary Portland cement concrete exposed to dry and hot weather conditions, good moist curing period is [ A ] 7 days [ B ] 10 days [ C ] 14 days [ D ] None of the above
Last Answer : [ B ] 10 days
Description : Which one of the following types of vegetation is referred as Monsoon forest? (a) Tropical Dry-evergreen forests (b) Tropical Moist-deciduous forests (c) Tropical Semi-evergreen forests (d) Tropical Dry-deciduous forests
Last Answer : Ans: (b)
Description : For lime concrete, (A) Slump is 50 to 75 mm (B) Flexural strength at 90 days is 0.2 N/mm2 (C) Compressive strength at 90 days is 1.5 N/mm2 (D) All the above
Description : Slump test of concrete is a measure of its (A) Consistency (B) Compressive strength (C) Tensile strength (D) Impact value
Last Answer : (A) Consistency
Description : If the slump of a concrete mix is 60 mm, its workability is (A) Very low (B) Low (C) Medium (D) High
Last Answer : Answer: Option C
Description : 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 ... The slump of the concrete mix decreases due to an increase in temperature (D) All the above
Description : Slump test is done for (A) Clay (B) Sand (C) Lime (D) Concrete
Description : Workability of concrete is measured by (A) Vicat apparatus test (B) Slump test (C) Minimum void method (D) Talbot Richa
Description : Workability of concrete mix with low water cement ratio is determined by (A) Tensile strength test (B) Slump test (C) Compaction factor test (D) Flexural strength test
Description : Slump test for concrete is carried out, to determine (A) Strength (B) Durability (C) Workability (D) Water content
Description : The slump recommended for mass concrete is about (A) 25 mm to 50 mm (B) 50 mm to 100 mm (C) 100 mm to 125 mm (D) 125 mm to 150 mm
Last Answer : Answer: Option A
Description : The concrete slump recommended for beams and slabs; is (A) 25 to 50 mm (B) 25 to 75 mm (C) 30 to 125 mm (D) 50 to 100 mm
Description : The concrete slump recommended for columns, is (A) 25 to 50 mm (B) 25 to 75 mm (C) 75 to 125 mm (D) 50 to 100 mm
Description : The concrete slump recommended for foundations, is (A) 25 to 50 mm (B) 30 to 125 mm (C) 50 to 100 mm (D) 75 to 125 mm
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 : 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 : The slump test of concrete is used to measure its (a) Consistency (b) Mobility (c) Homogeneity (d) All the above
Last Answer : (a) Consistency
Description : The workability of concrete is expressed by (a) Water-cement ratio (b) Slump value (c) Compaction factor (d) Both (a) and (b)
Last Answer : (d) Both (a) and (b)
Description : Workability of a concrete – mix is determined by (i)Slump cone test (ii)Compaction factor test (iii)Vee bee test [ A ] i [ B ] ii [ C ] i and ii [ D ] i, ii and iii
Last Answer : [ D ] i, ii and iii
Description : Slump test of concrete is a measure of its [ A ] Consistency [ B ] Compressive strength [ C ] Tensile strength [ D ] Impact value
Last Answer : [ A ] Consistency
Description : If the slump of a concrete mix is 50 to 100 mm, its workability is [ A ] Very low [ B ] Low [ C ] Medium [ D ] High
Last Answer : [ C ] Medium
Description : Workability of concrete mix with low water cement ratio is determined by [ A ] Tensile strength test [ B ] Slump cone test [ C ] Compaction factor test [ D ] Flexural strength test
Last Answer : [ C ] Compaction factor test
Description : While determining the workability of concrete mix, the compaction factor test is ------than the slump cone test [ A ] Less accurate [ B ] More accurate [ C ] Approximate method [ D ] None of the above
Last Answer : [ B ] More accurate
Description : Slump cone test is used to determine [ A ] Shrinkage of concrete mix [ B ] Creep of concrete [ C ] Workability of concrete mix [ D ] Soundness of concrete
Last Answer : [ C ] Workability of concrete mix
Description : 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
Description : An aggregate having all the pores are filled with water and also having its surface wet is called (a) Dry aggregate (b) Moist aggregate (c) Saturated surface dry aggregate (d) All the above
Last Answer : (b) Moist aggregate
Description : An aggregate having all the pores filled with water but having dry surface is called . (a) Dry aggregate (b) Moist aggregate (c) Saturated surface dry aggregate (d) All the above
Last Answer : (c) Saturated surface dry aggregate
Description : An aggregate which may contain some moisture in the pores but having dry surface is known as. (a) Dry aggregate (b) Moist aggregate (c) Saturated surface dry aggregate (d) All the above
Last Answer : (a) Dry aggregate
Description : The top diameter, bottom diameter and the height of a slump mould are: (A) 10 cm, 20 cm, 30 cm (B) 10 cm, 30 cm, 20 cm (C) 20 cm, 10 cm, 30 cm (D) 20 cm, 30 cm, 10 cm
Last Answer : (A) 10 cm, 20 cm, 30 cm
Description : The process of hardening the concrete by keeping its surface moist is known (A) Placing (B) Wetting (C) Curing (D) Compacting
Description : The process of keeping concrete moist for a certain period after its finishing, is known as (A) Finishing of concrete (B) Curing of concrete (C) Placing of concrete (D) Compaction of concrete
Description : The process of keeping the concrete structure moist is called [ A ] Hydration [ B ] Curing [ C ] Creep [ D ] Shrinkage
Last Answer : [ B ] Curing
Description : Explain the procedure for measurement of workability of fresh concrete using slump cone test.
Last Answer : Test Procedure: i. Clean the mould from inside and apply oil to it. ii. Place the mould on smooth horizontal, rigid & non-absorbent surface or the centre of metallic tray. iii. Fill the mould ... top of cone. vi. Based on measured slump, the degree of workability is designated as follows.
Description : If PE denotes monthly average value of potential evapo–transpiration and R stands for monthly average rainfall, the period having PE/4 greater than or equal to R, is designated as...... (A) Moist (B) Humid (C) Moderately Dry (D) Severe Drought (E) Dry
Last Answer : (C) Moderately Dry
Description : ed planting is practiced for row crops in (a) Semi-arid conditions to place seed deep in moist soil (b) High rainfall areas to improve surface drainage (c) Irrigated areas leaving more space for operation of equipments (d) Both (b) and (c)
Last Answer : d) Both (b) and (c)
Description : Lister planting or furrow planting is practiced for (a) High rainfall areas to improve surface drainage (b) Semi-arid conditions to place seed deep in moist soil (c) Areas where natural moisture conditions are favourable (d) Irrigated areas leaving more space for operation of equipments
Last Answer : (b) Semi-arid conditions to place seed deep in moist soil
Description : Pick up the correct statement from the following: (A) When water table is above the base of a footing, the dry weight m should be used for soil below water table (B) When water table is located ... water table is just at the base of the footing, no reduction factor is used (D) None of these
Last Answer : (B) When water table is located somewhat below the base of a footing, the elastic wedge is partly of moist soil and partly of submerged soil, and a suitable reduction factor is used
Description : If the depth of moist sand in a cylinder is 15 cm and the depth of the sand when fully inundated with water is 12 cm, the bulking of the moist sand, is (A) 10 % (B) 12 % (C) 15 % (D) 25%
Description : __________ is the most commonly used 'filter aid'. (A) Diatomaceous earth (B) Fuller's earth (C) Vermiculite (D) Semi-plastic clay
Last Answer : (A) Diatomaceous earth
Description : A decrease in water content results in a reduction of the volume of a soil in (A) Liquid state (B) Plastic state (C) Semi solid state (D) All of these
Last Answer : (D) All of these
Description : The water content in a soil sample when it continues to loose weight without loosing the volume, is called (A) Shrinkage limit (B) Plastic limit (C) Liquid limit (D) Semi-solid limit
Description : Plasticity index is defined as the range of water content between (A) Liquid and plastic limit (B) Plastic limit and semi solid limit (C) Semi-solid limit and liquid limit (D) Liquid limit and solid limit