44 + Interview Questions in Fresh Concrete in Concrete Technology Page 1 InterviewSolution

1.	The minimum water to cement ratio for cement concrete to hydrate is _______(a) 0.65(b) 0.5(c) 0.38(d) 0.27I have been asked this question during an internship interview.This interesting question is from Process of Manufacture of Fresh Concrete topic in section Fresh Concrete of Concrete Technology
Answer» The correct option is (C) 0.38 To explain: Minimum water cement RATIO is 0.38. It cannot be 35 KG. W/C ratio DEPENDS on the EXPOSURE condition of concrete but minimum water cement ratio is 0.38 for full hydration of concrete.

Discussion

2.	What is the compaction factor for low degree of workability?(a) .78(b) .85(c) .92(d) .95I have been asked this question in an internship interview.Origin of the question is Tests on Workability of Fresh Concrete in division Fresh Concrete of Concrete Technology
Answer» Right ANSWER is (b) .85 Easiest EXPLANATION: The compaction factor for low DEGREE of WORKABILITY is .85 and .95 is the compaction for the high degree.

Discussion

3.	Workability of concrete is directly proportional to __________(a) Grading of the aggregates(b) Time of transit(c) Aggregates cement ratio(d) Water cement ratioI got this question during an interview.My doubt is from Workability of Fresh Concrete topic in section Fresh Concrete of Concrete Technology
Answer» Correct answer is (a) Grading of the AGGREGATES To elaborate: Grading of aggregate: POOR grading REDUCES consistency. That’s why it is directly proportional to grading of the aggregates.

Discussion

4.	___________ is practical in field test.(a) Slump test(b) Compacting factor test(c) Flow table test(d) Kelly Ball TestI got this question during an interview.The doubt is from Measurement of Workability topic in chapter Fresh Concrete of Concrete Technology
Answer» Right OPTION is (d) KELLY BALL Test The BEST EXPLANATION: It measures the depth of penetration. Kelly Ball Test is practical in field test.

Discussion

5.	Workability of concrete is measured by __________(a) Vicat apparatus test(b) Slump test(c) Minimum void method(d) Talbot Richard testThe question was posed to me in homework.Question is taken from Measurement of Workability in portion Fresh Concrete of Concrete Technology
Answer» The correct choice is (b) SLUMP test Easiest explanation: Work ability of concrete is MEASURED by slump CONE test, compaction factor test. Slump cone is USED for medium work ability. For high work abilities it is not accurate.Slump values vary from 0 mm to 300 mm.

Discussion

6.	Dry intervals in surface wetting leads to __________(a) Cracking(b) Fogging(c) High strength(d) Good workabilityThis question was posed to me in a national level competition.I would like to ask this question from Curing of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer» The correct answer is (a) Cracking For EXPLANATION I would say: DRY intervals or PATCHES can lead to crazing or cracking on the SLAB surface.

Discussion

7.	What is the percentage of iron oxide in white cement?(a) High(b) Very high(c) Medium(d) Very lowThis question was addressed to me during an interview.My enquiry is from Process of Manufacture of Fresh Concrete in division Fresh Concrete of Concrete Technology
Answer» Right OPTION is (d) Very low Easy explanation: As iron oxide gives the grey colour to CEMENT, it is therefore necessary for WHITE cement to keep the content of iron oxide as low as POSSIBLE.

Discussion

8.	This image has _________(a) High w/c ratio(b) Low w/c ratio(c) High Strength(d) Low porosityThe question was asked in semester exam.I'm obligated to ask this question of Tests on Workability of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer» The CORRECT option is (a) HIGH w/c ratio The BEST I can explain: It is clear vision from the image that the AMOUNT of WATER is more as compared to cement.

Discussion

9.	The water–cement ratio is the ratio of _______________(a) Weight of water to the weight of cement(b) Volume of water to the volume of cement(c) Density of water to the Density of cement(d) Weight of water to the weight of aggregatesThis question was addressed to me in my homework.This interesting question is from Tests on Workability of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer» The CORRECT answer is (a) WEIGHT of WATER to the weight of CEMENT Easiest explanation: The water–cement ratio is the ratio of the weight of water to the weight of cement used in a CONCRETE mix.

Discussion

10.	Which test gives good results for rich mixes?(a) Slump test(b) Compacting factor test(c) Flow table test(d) VeBe testI have been asked this question in my homework.This intriguing question originated from Measurement of Workability topic in chapter Fresh Concrete of Concrete Technology
Answer» Correct answer is (a) Slump test Best explanation: This is a test used extensively in site WORK all over the WORLD. Very useful in detecting VARIATIONS in the uniformity of a mix of given nominal PROPORTIONS.

Discussion

11.	Why Shape and texture of aggregates is a must?(a) Smooth surfaces give better workability(b) Smooth surfaces give poor workability(c) Rough surfaces give better workability(d) Rough surfaces give poor workabilityThe question was asked in semester exam.I'd like to ask this question from Workability of Fresh Concrete topic in section Fresh Concrete of Concrete Technology
Answer» Correct choice is (a) Smooth surfaces give better workability For EXPLANATION I would say: The USE of smooth and rounded, rather than IRREGULARLY SHAPED aggregate also increases workability.

Discussion

12.	Which test used for low workable concretes?(a) Slump test(b) Compacting factor test(c) Flow table test(d) VeBe testI had been asked this question by my college director while I was bunking the class.My question is based upon Measurement of Workability topic in chapter Fresh Concrete of Concrete Technology
Answer» Correct choice is (b) Compacting factor test The BEST I can explain: The degree of COMPACTION, CALLED compacting factor, is measured by the density RATIO, i.e. the ratio of the density of actually ACHIEVED in the test to the density of the same concrete fully compacted.

Discussion

13.	In a dry environment, concrete strength will be loosed as much as _________ % in the moist environment.(a) 30(b) 40(c) 50(d) 60I had been asked this question in an internship interview.This question is from Curing of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer» Correct CHOICE is (c) 50 The best I can explain: Laboratory tests SHOW that CONCRETE strength will be loosed as much as 50% in DRY environment as COMPARED to moist environment.

Discussion

14.	How many types of tests are there to find workability?(a) 3(b) 4(c) 5(d) 6This question was addressed to me by my college director while I was bunking the class.This intriguing question originated from Measurement of Workability topic in portion Fresh Concrete of Concrete Technology
Answer» Correct ANSWER is (c) 5 The best explanation: There are 5 types of TEST to find the WORKABILITY of a CONCRETE i.e. slump test, compacting FACTOR test, flow table test, vebe test, Kelly ball test.

Discussion

15.	Concrete placed in cold weather will take __________ time to gain strength.(a) No(b) Less(c) More(d) Equal to hot weatherThis question was addressed to me by my school principal while I was bunking the class.This interesting question is from Curing of Fresh Concrete in division Fresh Concrete of Concrete Technology
Answer» Correct CHOICE is (c) More For explanation I would say: CONCRETE placed in cold weather will take longer time to GAIN strength, delaying FORM removal and subsequent construction.

Discussion

16.	What is the percentage of air by volume in Air Entraining Cement?(a) 3-4(b) 10-11(c) 7-8(d) 9I had been asked this question by my school principal while I was bunking the class.My doubt stems from Process of Manufacture of Fresh Concrete in portion Fresh Concrete of Concrete Technology
Answer» RIGHT choice is (a) 3-4 The best EXPLANATION: ENTERTAINMENT of air ALSO improves work ability and durability. It is recommended that air contents should be 03-04 % by volume.

Discussion

17.	What is the moisture content in slurry for wet process?(a) 35-50%(b) 12%(c) 40-45%(d) 100%I had been asked this question during an online exam.This question is from Process of Manufacture of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer» CORRECT answer is (a) 35-50% To explain: The MOISTURE CONTENT in slurry for wet process is 35-50%. 12% is the moisture content for DRY process.

Discussion

18.	The hydration that provides the initial mix and chemical bond of the concrete’s ingredients is the _________(a) First step(b) Second step(c) Third step(d) Fourth stepThe question was posed to me in semester exam.This intriguing question originated from Curing of Fresh Concrete in chapter Fresh Concrete of Concrete Technology
Answer» Right CHOICE is (a) First STEP To elaborate: The hydration that provides the initial mix and chemical BOND of the concrete’s ingredients is the first step, but in order for the SLAB to be properly PREPARED for its final finish or flooring.

Discussion

19.	What is curing?(a) Dehydration(b) Hydration(c) Drying(d) DippingI have been asked this question in quiz.My query is from Curing of Fresh Concrete topic in section Fresh Concrete of Concrete Technology
Answer» The correct OPTION is (B) Hydration The best EXPLANATION: Curing refers to hydration, the chemical process by which concrete hardens once it is poured.

Discussion

20.	A lower ratio leads to ____________(a) Higher strength and durability(b) Higher strength but low durability(c) Lower strength but high durability(d) Lower strength and durabilityThis question was posed to me in exam.My doubt stems from Tests on Workability of Fresh Concrete topic in chapter Fresh Concrete of Concrete Technology
Answer» Correct choice is (a) Higher strength and DURABILITY To explain: A LOWER RATIO leads to higher strength and durability, but may make the MIX DIFFICULT to work with and form.

Discussion

21.	Which test Used for high workable concretes?(a) Slump test(b) Compacting factor test(c) Flow table test(d) VeBe testThe question was posed to me during an online exam.The question is from Measurement of Workability in division Fresh Concrete of Concrete Technology
Answer» RIGHT option is (c) Flow table test To explain: Compacting factor test USED for high workable concretes. It measures the diameter of SPREAD after VIBRATION.

Discussion

22.	How to improve the workability of concrete.(a) Increase the w/c ratio(b) Decrease the w/c ratio(c) Decrease the size of aggregates(d) Don’t mix it for longer timeThis question was posed to me in semester exam.This interesting question is from Tests on Workability of Fresh Concrete topic in portion Fresh Concrete of Concrete Technology
Answer» Right answer is (a) Increase the w/c RATIO Explanation: Increasing the WATER cement ratio, HELPS in IMPROVING the workability of the concrete.

Discussion

23.	Workability of concrete is inversely proportional to __________(a) Grading of the aggregates(b) Time of transit(c) Aggregates cement ratio(d) Water cement ratioThis question was posed to me during an online interview.This is a very interesting question from Workability of Fresh Concrete in division Fresh Concrete of Concrete Technology
Answer» CORRECT ANSWER is (d) Water cement ratio To explain I would say: Workability of concrete is inversely proportional to the Water cement ratio because if the AMOUNT of w/c ratio INCREASES, workability DECREASES.

Discussion

24.	For complete hydration of cement the w/c ratio needed is ________(a) More than 0.25(b) More than 0.25 but less than 0.35(c) More than 0.35 but less than 0.60(d) More than 0.60I have been asked this question in an internship interview.I need to ask this question from Process of Manufacture of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer» Right answer is (c) More than 0.35 but LESS than 0.60 For explanation I would say: A mix with a ratio of 0.45 MAY not mix thoroughly, and may not flow well enough to be placed. More water is therefore USED than is technically NECESSARY to react with cement. Water–cement ratios of 0.45 to 0.60 are more TYPICALLY used.

Discussion

25.	These test find workability __________(a) Directly(b) Indirectly(c) 0(d) Equals to the weight of the cementI have been asked this question in final exam.I want to ask this question from Measurement of Workability topic in portion Fresh Concrete of Concrete Technology
Answer» The correct OPTION is (b) Indirectly Easiest explanation: Unfortunately, there are no accepted TESTS, which can measure DIRECTLY the WORKABILITY.

Discussion

26.	A compaction factor of .85 for a cement concrete sample indicates ___________(a) Low workability(b) Medium workability(c) Good workability(d) Very good workabilityThis question was addressed to me during an interview.This key question is from Workability of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer» Correct answer is (a) Low workability To explain: Roads vibrated by hand-operated machines. At the more workable END of this group, concrete may be manually COMPACTED in roads using AGGREGATE of rounded or irregular shape.

Discussion

27.	If compaction factor of concrete is .90, then workability is ____________(a) Low(b) Very low(c) Medium(d) HighThis question was addressed to me by my college professor while I was bunking the class.My doubt stems from Workability of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer» CORRECT answer is (c) Medium Easy explanation: At the LESS WORKABLE end of this group, manually COMPACTED flat slabs using crushed aggregates. Normal reinforced CONCRETE manually compacted and heavily reinforced sections with vibration.

Discussion

28.	What do you mean by workability?(a) ASTM C 125 defines workability as the property determining the effort required to manipulate a freshly mixed quantity of concrete with a maximum loss of homogeneity(b) ASTM C 125 defines workability as the property determining the effort required to manipulate a freshly mixed quantity of concrete with minimum loss of heterogeneity(c) The strict definition of workability is the amount of useful external work, against the external friction between the individual particles in the concrete, necessary to produce full compaction(d) The workability is also defined as the ease with which a freshly mixed concrete can be properly compacted and also that it can be transported, placed, and finishedThe question was posed to me in unit test.This question is from Workability of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer» CORRECT choice is (d) The workability is ALSO DEFINED as the ease with which a FRESHLY mixed concrete can be PROPERLY compacted and also that it can be transported, placed, and finished For explanation: The workability is defined as the ease with which a freshly mixed concrete can be properly compacted and also that it can be transported, placed, and finished.

Discussion

29.	Workability can be resolved __________(a) With not using of plasticizers(b) With use of plasticizers(c) With the use of both plasticizers and super plasticizers(d) With not using of both plasticizers and super plasticizersI got this question in homework.Question is from Tests on Workability of Fresh Concrete in section Fresh Concrete of Concrete Technology
Answer» RIGHT choice is (C) With the use of both plasticizers and super plasticizers To ELABORATE: Plasticizers and super plasticizers helps to improve the workability to construct the building.

Discussion

30.	Which method is the most common and cheaper for water curing?(a) Ponding(b) Sprinkling(c) Mist curing(d) Wet coveringThis question was addressed to me during a job interview.I'm obligated to ask this question of Curing of Fresh Concrete in portion Fresh Concrete of Concrete Technology
Answer» Correct option is (a) PONDING Explanation: Ponding is the most COMMON and inexpensive METHOD of curing flat SURFACES such as floor SLABS, flat roofs, pavements and other horizontal surfaces.

Discussion

31.	Adding water increases __________(a) Workability(b) Strength(c) Fame(d) QualityI got this question in homework.This intriguing question originated from Workability of Fresh Concrete topic in section Fresh Concrete of Concrete Technology
Answer» Correct choice is (a) WORKABILITY For explanation I would say: ADDING water INCREASES workability because it is INVERSELY proportional to the workability.

Discussion

32.	Contractors place blankets over the concrete to ____________(a) Increase the rate of evaporation(b) Slow the rate of evaporation(c) To increase the strength(d) Ease to do workThis question was addressed to me in an interview for job.I would like to ask this question from Curing of Fresh Concrete topic in chapter Fresh Concrete of Concrete Technology
Answer» Right choice is (B) Slow the rate of evaporation The explanation is: A more common practice is for CONTRACTORS to PLACE blankets over the slab SURFACE to slow the rate of evaporation.

Discussion

33.	What is the Vee-Bee time for medium degree of workability?(a) 10-20 sec(b) 5-10 sec(c) 2-5 sec(d) 35 secThis question was addressed to me by my college professor while I was bunking the class.My doubt is from Measurement of Workability in portion Fresh Concrete of Concrete Technology
Answer» Right ANSWER is (c) 2-5 sec To explain I would SAY: 2-5 sec is the Vee-Bee time for the MEDIUM DEGREE of workability and 10-20 sec is for very low.

Discussion

34.	Workability of concrete can be improved by the addition of __________(a) Iron(b) Sodium(c) Zinc(d) SulphurThe question was asked in homework.The question is from Workability of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer» RIGHT choice is (c) Zinc For explanation I would say: Inorganic retardants include OXIDES of lead, zinc, PHOSPHATE and magnesium salts. Most retarders also ACT as water REDUCERS.

Discussion

35.	Well cured concrete _________ thermal, plastic & drying shrinkage cracks.(a) Doesn’t affect(b) Maximize(c) Minimize(d) CreateThis question was posed to me in unit test.I want to ask this question from Curing of Fresh Concrete topic in section Fresh Concrete of Concrete Technology
Answer» Right answer is (C) Minimize To elaborate: Well cured concrete can minimize thermal, plastic & drying shrinkage CRACKS, making concrete more water tight, THUS preventing moisture and water BORNE CHEMICALS from entering into the concrete.

Discussion

36.	After finishing concrete surface must be kept _________(a) Dry(b) First dry it and then wet it(c) First wet it and then dry it(d) WetThe question was asked during an interview.The question is from Curing of Fresh Concrete topic in chapter Fresh Concrete of Concrete Technology
Answer» CORRECT ANSWER is (d) Wet Explanation: After finishing concrete SURFACE must be KEPT wet, so that it’d be prevented from evaporation.

Discussion

37.	The slurry, in its movement down the kiln, encounters a progressively higher temperature. At first, the water is driven off and __________ is liberated.(a) SiO2(b) CO2(c) Gypsum(d) CaOThe question was posed to me by my school principal while I was bunking the class.My question is from Process of Manufacture of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer» Right ANSWER is (B) CO2 To elaborate: At 900°C LIMESTONE decomposes, CaCO3.CaO + CO2 (ENDOTHERMIC reaction) CO2 is swept AWAY by current air.

Discussion

38.	What is the compaction factor for medium degree of workability?(a) .78(b) .85(c) .92(d) .95I had been asked this question during an internship interview.I want to ask this question from Measurement of Workability topic in section Fresh Concrete of Concrete Technology
Answer» Correct OPTION is (C) .92 Explanation: The compaction FACTOR for MEDIUM DEGREE of workability is .92 and .78 is the compaction for a very low degree.

Discussion

39.	Which test used for fiber reinforced concrete?(a) Slump test(b) Compacting factor test(c) Flow table test(d) VeBe testThis question was posed to me during an interview.This question is from Measurement of Workability topic in chapter Fresh Concrete of Concrete Technology
Answer» CORRECT option is (d) VeBe test The explanation is: Start time after removing cone and stop counter once the transparent RIDER is COVERED with paste. RECORD in seconds. This is VeBe time.

Discussion

40.	Workability of concrete can be improved by ___________(a) Increasing size of aggregates(b) Decreasing size of aggregates(c) Increasing fine aggregates(d) Increasing flaky aggregatesThe question was posed to me by my college director while I was bunking the class.Question is taken from Workability of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer»

Discussion

41.	What is the full form of rH?(a) Rhesus factor(b) Relative humidity(c) Rush hour(d) Radio headI had been asked this question during an online exam.This intriguing question comes from Curing of Fresh Concrete topic in chapter Fresh Concrete of Concrete Technology
Answer» Right choice is (b) RELATIVE humidity Easy explanation: Relative Humidity (RH) is the ratio of the amount of water VAPOR in the AIR at a specific TEMPERATURE to the maximum amount that the air could hold at that temperature.

Discussion

42.	Approximate percentage range of A2O3 in OPC is _______(a) 17-25(b) 3-8(c) 3- 10(d) 4-15This question was addressed to me during an interview.My query is from Process of Manufacture of Fresh Concrete in division Fresh Concrete of Concrete Technology
Answer» Right answer is (c) 3- 10 For EXPLANATION I WOULD say: Percentage of A2O3 is 3-8, CaO has 60-67, SIO2 has 17-25, SO3 is 1-3, MgO has .1-4 and SODA has .5-1.3.

Discussion

43.	What is workability?(a) When it is easily placed and compacted heterogeneous(b) When it is easily placed and compacted homogenous(c) When it is not easily placed(d) When it is easily placed but not compacted homogenousThis question was addressed to me in exam.My question is from Tests on Workability of Fresh Concrete in portion Fresh Concrete of Concrete Technology
Answer» The correct ANSWER is (B) When it is easily PLACED and compacted homogenous Easiest EXPLANATION: Concrete is said to be workable when it is easily placed and compacted HOMOGENEOUSLY i.e without bleeding or Segregation.

Discussion

44.	Workability of concrete can be improved by __________(a) More sand(b) More cement(c) More fine aggregates(d) Fineness of coarse aggregateI had been asked this question in an internship interview.I need to ask this question from Workability of Fresh Concrete topic in division Fresh Concrete of Concrete Technology
Answer» Right option is (b) More cement Easiest explanation: WORKABILITY of CONCRETE can be IMPROVED by more cement and water with PROPER water cement ratio.

Discussion

Explore topic-wise InterviewSolutions in .

The minimum water to cement ratio for cement concrete to hydrate is _______(a) 0.65(b) 0.5(c) 0.38(d) 0.27I have been asked this question during an internship interview.This interesting question is from Process of Manufacture of Fresh Concrete topic in section Fresh Concrete of Concrete Technology

What is the compaction factor for low degree of workability?(a) .78(b) .85(c) .92(d) .95I have been asked this question in an internship interview.Origin of the question is Tests on Workability of Fresh Concrete in division Fresh Concrete of Concrete Technology

___________ is practical in field test.(a) Slump test(b) Compacting factor test(c) Flow table test(d) Kelly Ball TestI got this question during an interview.The doubt is from Measurement of Workability topic in chapter Fresh Concrete of Concrete Technology

Workability of concrete is measured by __________(a) Vicat apparatus test(b) Slump test(c) Minimum void method(d) Talbot Richard testThe question was posed to me in homework.Question is taken from Measurement of Workability in portion Fresh Concrete of Concrete Technology

Dry intervals in surface wetting leads to __________(a) Cracking(b) Fogging(c) High strength(d) Good workabilityThis question was posed to me in a national level competition.I would like to ask this question from Curing of Fresh Concrete topic in division Fresh Concrete of Concrete Technology

What is the percentage of iron oxide in white cement?(a) High(b) Very high(c) Medium(d) Very lowThis question was addressed to me during an interview.My enquiry is from Process of Manufacture of Fresh Concrete in division Fresh Concrete of Concrete Technology

This image has _________(a) High w/c ratio(b) Low w/c ratio(c) High Strength(d) Low porosityThe question was asked in semester exam.I'm obligated to ask this question of Tests on Workability of Fresh Concrete topic in division Fresh Concrete of Concrete Technology

Which test gives good results for rich mixes?(a) Slump test(b) Compacting factor test(c) Flow table test(d) VeBe testI have been asked this question in my homework.This intriguing question originated from Measurement of Workability topic in chapter Fresh Concrete of Concrete Technology

In a dry environment, concrete strength will be loosed as much as _________ % in the moist environment.(a) 30(b) 40(c) 50(d) 60I had been asked this question in an internship interview.This question is from Curing of Fresh Concrete topic in division Fresh Concrete of Concrete Technology

How many types of tests are there to find workability?(a) 3(b) 4(c) 5(d) 6This question was addressed to me by my college director while I was bunking the class.This intriguing question originated from Measurement of Workability topic in portion Fresh Concrete of Concrete Technology

What is the percentage of air by volume in Air Entraining Cement?(a) 3-4(b) 10-11(c) 7-8(d) 9I had been asked this question by my school principal while I was bunking the class.My doubt stems from Process of Manufacture of Fresh Concrete in portion Fresh Concrete of Concrete Technology

What is the moisture content in slurry for wet process?(a) 35-50%(b) 12%(c) 40-45%(d) 100%I had been asked this question during an online exam.This question is from Process of Manufacture of Fresh Concrete topic in division Fresh Concrete of Concrete Technology

What is curing?(a) Dehydration(b) Hydration(c) Drying(d) DippingI have been asked this question in quiz.My query is from Curing of Fresh Concrete topic in section Fresh Concrete of Concrete Technology

Which test Used for high workable concretes?(a) Slump test(b) Compacting factor test(c) Flow table test(d) VeBe testThe question was posed to me during an online exam.The question is from Measurement of Workability in division Fresh Concrete of Concrete Technology

These test find workability __________(a) Directly(b) Indirectly(c) 0(d) Equals to the weight of the cementI have been asked this question in final exam.I want to ask this question from Measurement of Workability topic in portion Fresh Concrete of Concrete Technology

Which method is the most common and cheaper for water curing?(a) Ponding(b) Sprinkling(c) Mist curing(d) Wet coveringThis question was addressed to me during a job interview.I'm obligated to ask this question of Curing of Fresh Concrete in portion Fresh Concrete of Concrete Technology

Adding water increases __________(a) Workability(b) Strength(c) Fame(d) QualityI got this question in homework.This intriguing question originated from Workability of Fresh Concrete topic in section Fresh Concrete of Concrete Technology

What is the Vee-Bee time for medium degree of workability?(a) 10-20 sec(b) 5-10 sec(c) 2-5 sec(d) 35 secThis question was addressed to me by my college professor while I was bunking the class.My doubt is from Measurement of Workability in portion Fresh Concrete of Concrete Technology

Workability of concrete can be improved by the addition of __________(a) Iron(b) Sodium(c) Zinc(d) SulphurThe question was asked in homework.The question is from Workability of Fresh Concrete topic in division Fresh Concrete of Concrete Technology

Well cured concrete _________ thermal, plastic & drying shrinkage cracks.(a) Doesn’t affect(b) Maximize(c) Minimize(d) CreateThis question was posed to me in unit test.I want to ask this question from Curing of Fresh Concrete topic in section Fresh Concrete of Concrete Technology

After finishing concrete surface must be kept _________(a) Dry(b) First dry it and then wet it(c) First wet it and then dry it(d) WetThe question was asked during an interview.The question is from Curing of Fresh Concrete topic in chapter Fresh Concrete of Concrete Technology

What is the compaction factor for medium degree of workability?(a) .78(b) .85(c) .92(d) .95I had been asked this question during an internship interview.I want to ask this question from Measurement of Workability topic in section Fresh Concrete of Concrete Technology

Which test used for fiber reinforced concrete?(a) Slump test(b) Compacting factor test(c) Flow table test(d) VeBe testThis question was posed to me during an interview.This question is from Measurement of Workability topic in chapter Fresh Concrete of Concrete Technology

What is the full form of rH?(a) Rhesus factor(b) Relative humidity(c) Rush hour(d) Radio headI had been asked this question during an online exam.This intriguing question comes from Curing of Fresh Concrete topic in chapter Fresh Concrete of Concrete Technology

Approximate percentage range of A2O3 in OPC is _______(a) 17-25(b) 3-8(c) 3- 10(d) 4-15This question was addressed to me during an interview.My query is from Process of Manufacture of Fresh Concrete in division Fresh Concrete of Concrete Technology