121 + Interview Questions in Special Concrete And Concreting Methods in Concrete Technology Page 1 InterviewSolution

1.	What is the thickness of the steel fiber after silting in mm?(a) .3-.5(b) .25(c) .155-.41(d) .25-.90This question was posed to me during an interview.I'd like to ask this question from Sulphur Infiltrated Concrete, FRC in section Special Concrete and Concreting Methods of Concrete Technology
Answer» Correct option is (B) .25 For explanation: STEEL fibers having a rectangular cross section are produced by SILTING the sheets about 0.25mm THICK.

Discussion

2.	SCC has __________ yield stress.(a) Low(b) High(c) Medium(d) 75%This question was posed to me during an internship interview.This key question is from Complexity in Special Concrete, India in SCC topic in portion Special Concrete and Concreting Methods of Concrete Technology
Answer»

Discussion

3.	Light weight cement content for compressive strength 17.24 MPa is _______ kg/m^3.(a) 237-303(b) 261-332(c) 314-392(d) 373-445This question was posed to me during an interview for a job.I need to ask this question from Structural Light Weight Concrete topic in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» Right choice is (a) 237-303 Explanation: LIGHT weight cement content for COMPRESSIVE strength 17.24 MPA is 237-303 kg/m^3. 314-392 is the compressive strength of 27.58 MPa.

Discussion

4.	What is the range of contraction for this concrete in mm/m?(a) .5-1(b) .6(c) 1I have been asked this question during an interview for a job.I'd like to ask this question from Sulphur Infiltrated Concrete, FRC topic in division Special Concrete and Concreting Methods of Concrete Technology
Answer» CORRECT ANSWER is (a) .5-1 Explanation: 0.5-1 mm/m is the RANGE of contraction for SULPHUR infiltered concrete where as .6mm/m is for OPC.

Discussion

5.	The cement concrete, from which entrained air and excess water are removed after placing it in position, is called ________(a) Vacuum concrete(b) LWC(c) Prestressed concrete(d) Sawdust concreteThis question was addressed to me during an online interview.I want to ask this question from Special Concrete topic in section Special Concrete and Concreting Methods of Concrete Technology
Answer»

Discussion

6.	IS: 7861 part-1 deals with ___________(a) Hot weathering concrete(b) Cold weathering concrete(c) Air entertained concrete(d) OPCThis question was posed to me by my school teacher while I was bunking the class.This key question is from Hot Weather Concreting, Prepacked and Vacuum Cement in division Special Concrete and Concreting Methods of Concrete Technology
Answer» The correct choice is (a) Hot weathering concrete For EXPLANATION: IS: 7861 part-1 DEALS with hot WEATHER CONCRETING and Part-2 deals with cold weather concreting.

Discussion

7.	What is the 7th day compressive failure stress in N/mm^2?(a) 40(b) 1500(c) 38(d) 180The question was asked in unit test.Origin of the question is Concrete Cloth, Polymer Impregnated Concrete topic in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» RIGHT OPTION is (c) 38 Easiest explanation: This test is BASED on ASTM C473 – 07 and the 7TH day compressive failure stress is 38 N/mm^2.

Discussion

8.	What is the 10 day compressive failure stress in N/mm^2?(a) 40(b) 1500(c) 3.4(d) 180This question was posed to me in an online quiz.Question is from Concrete Cloth, Polymer Impregnated Concrete in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» Correct answer is (a) 40 The EXPLANATION is: This test is based on ASTM C473 – 07 and the 10 day COMPRESSIVE failure STRESS is 40 N/mm^2.

Discussion

9.	What is the thickness of the flat sheet fibers after silting in mm?(a) .3-.5(b) .25(c) .15-.41(d) .25-.90This question was posed to me in an international level competition.Origin of the question is Sulphur Infiltrated Concrete, FRC topic in division Special Concrete and Concreting Methods of Concrete Technology
Answer» Correct option is (c) .15-.41 To elaborate: 0.15 MM to 0.41 mm is the thickness of the flat SHEET FIBERS PRODUCED by silting of flat sheets.

Discussion

10.	Diameter of Round Steel Fiber lies in the range of _______ mm.(a) .3-.5(b) .25-.75(c) .155-.41(d) .25-.90I got this question in unit test.The above asked question is from Sulphur Infiltrated Concrete, FRC in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» RIGHT option is (b) .25-.75 The best explanation: ROUND steel fiber are commonly used and produced by CUTTING round wire into the SHORT length. The diameter lies in the range of 0.25mm to 0.75mm.

Discussion

11.	No fines concrete is manufactured by _______(a) By adding no fines materials from normal concrete(b) By eliminating no fines materials from normal concrete(c) By reducing its strength(d) By increasing its strengthI had been asked this question in an internship interview.This interesting question is from No Fines Concrete, High Density Concrete in division Special Concrete and Concreting Methods of Concrete Technology
Answer» Right option is (b) By eliminating no fines MATERIALS from normal CONCRETE Easy EXPLANATION: No fines concrete is one type of light weight concrete. As the name indicates that it is a concrete mix without fine AGGREGATE or SAND.

Discussion

12.	Light weight cement content for compressive strength 5000 psi is _______ pounds per cubic yard.(a) 400-510(b) 440-560(c) 530-660(d) 630-750I have been asked this question in class test.This is a very interesting question from Structural Light Weight Concrete in portion Special Concrete and Concreting Methods of Concrete Technology
Answer» The CORRECT ANSWER is (d) 630-750 The best I can explain: Light weight cement content for compressive strength 5000 PSI is 630-750 POUNDS per cubic yard and 400-510 is for compressive strength 2500 psi.

Discussion

13.	Light weight cement content for compressive strength 3000 psi is _______ pounds per cubic yard.(a) 400-510(b) 440-560(c) 530-660(d) 630-750This question was posed to me in final exam.Asked question is from Structural Light Weight Concrete topic in division Special Concrete and Concreting Methods of Concrete Technology
Answer» The correct CHOICE is (b) 440-560 Explanation: LIGHT WEIGHT CEMENT CONTENT for compressive strength 3000 psi is 440-560 pounds per cubic yard and 400-510 is for compressive strength 2500 psi.

Discussion

14.	Aggregates with a specific gravity of _________ are called lightweight aggregates.(a) 2.8(d) > 3I got this question during an online interview.My question is from Light Weight Concrete in section Special Concrete and Concreting Methods of Concrete Technology
Answer» RIGHT ANSWER is (a) <2.4 The explanation is: Aggregates with a specific GRAVITY of LESS than 2.4 are called lightweight aggregates.

Discussion

15.	In a dry environment, concrete strength will be loosed as much as __________ % in moist environment.(a) 30(b) 40(c) 50(d) 60I have been asked this question during an internship interview.The question is from Complexity in Special Concrete, India in SCC topic in division Special Concrete and Concreting Methods of Concrete Technology
Answer» Correct answer is (C) 50 Easy explanation: Laboratory tests SHOW that CONCRETE strength will be loosed as much as 50% in dry environment as COMPARED to MOIST environment.

Discussion

16.	If concrete is exposed to repeated freezing and thawing after the final set, the final qualities of the concrete may also be __________(a) Impair(b) Aid(c) Improve(d) ExtendI had been asked this question in unit test.Enquiry is from Factors Affecting PIC, Cold Weather Concreting in section Special Concrete and Concreting Methods of Concrete Technology
Answer» Correct answer is (a) Impair For EXPLANATION: If concrete is exposed to repeated freezing and thawing after the FINAL set and during the hardening period, the final qualities of the concrete may ALSO be impaired.

Discussion

17.	What is the density for this concrete in kg/m^3?(a) 2400(b) 2200(c) 2000(d) 1800I have been asked this question during an interview for a job.My query is from Sulphur Infiltrated Concrete, FRC topic in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» The CORRECT choice is (a) 2400 Easiest explanation: 2400 kg/m^3 is the density for SULPHUR infiltered concrete 2200 kg/m^3 is the density of Ordinary PORTLAND CEMENT.

Discussion

18.	Light weight cement content for compressive strength 41.37 MPa is _______ kg/m^3.(a) 237-303(b) 261-332(c) 314-392(d) 439 – 498The question was asked during an online interview.The above asked question is from Structural Light Weight Concrete topic in division Special Concrete and Concreting Methods of Concrete Technology
Answer» The correct answer is (a) 237-303 The best I can EXPLAIN: Light WEIGHT cement content for compressive strength 41.37 MPa is 439 – 498 kg/m^3. 314-392 is the compressive strength of 27.58 MPa.

Discussion

19.	Light weight cement content for compressive strength 27.58 MPa is _______ kg/m^3.(a) 237-303(b) 261-332(c) 314-392(d) 373-445I had been asked this question during an interview for a job.My doubt stems from Structural Light Weight Concrete in section Special Concrete and Concreting Methods of Concrete Technology
Answer» CORRECT answer is (c) 314-392 The best explanation: LIGHT WEIGHT cement content for compressive STRENGTH 27.58 MPa is 314-392 kg/m^3. 261-332 is the compressive strength of 20.68 MPa.

Discussion

20.	Light weight cement content for compressive strength 20.68 MPa is _______ kg/m^3.(a) 237-303(b) 261-332(c) 314-392(d) 373-445I had been asked this question in class test.The origin of the question is Structural Light Weight Concrete in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» The CORRECT answer is (b) 261-332 To explain: Light WEIGHT cement content for compressive STRENGTH 20.68 MPa is 261-332 kg/m^3. 314-392 is the compressive strength of 27.58 MPa.

Discussion

21.	Light weight cement content for compressive strength 6000 psi is _______ pounds per cubic yard.(a) 740-840(b) 440-560(c) 530-660(d) 630-750This question was addressed to me in unit test.The question is from Structural Light Weight Concrete topic in portion Special Concrete and Concreting Methods of Concrete Technology
Answer» The CORRECT CHOICE is (b) 440-560 Explanation: LIGHT weight cement content for COMPRESSIVE strength 6000 PSI is 740-840 pounds per cubic yard and 400-510 is for compressive strength 2500 psi.

Discussion

22.	SCC has __________ deformability.(a) Low(b) High(c) Medium(d) 75%The question was asked by my college professor while I was bunking the class.The doubt is from Complexity in Special Concrete, India in SCC in division Special Concrete and Concreting Methods of Concrete Technology
Answer» CORRECT OPTION is (b) High Explanation: Self-consolidating CONCRETE or self-compacting concrete (commonly called as SCC) is a concrete mix which has a high deformability.

Discussion

23.	SCC has ___________ segregation resistance.(a) Good(b) Bad(c) Average(d) PoorThis question was posed to me in an interview for job.This interesting question is from Complexity in Special Concrete, India in SCC in section Special Concrete and Concreting Methods of Concrete Technology
Answer» Correct answer is (a) GOOD Easiest explanation: Self-consolidating concrete or self-compacting concrete (commonly CALLED as SCC) is a concrete MIX that has a MEDIUM viscosity and good segregation resistance.

Discussion

24.	___________ water-cement ratio content to give adequate durability for the particular site conditions.(a) Minimum(b) Nominal(c) .5(d) MaximumThe question was posed to me in an interview for internship.My doubt is from Mix Design topic in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» CORRECT option is (d) MAXIMUM Explanation: Maximum water-CEMENT ratio and/or maximum cement content to give adequate durability for the particular site conditions. It helps to avoid shrinkage CRACKING due to the temp cycle in mass concrete.

Discussion

25.	The exposure of conventional mixing in open bowl is about ___________ ppm in the breathing zone.(a) 20(b) 40(c) 50(d) 10I had been asked this question by my college director while I was bunking the class.This is a very interesting question from Hot Weather Concreting, Prepacked and Vacuum Cement topic in portion Special Concrete and Concreting Methods of Concrete Technology
Answer» RIGHT choice is (d) 10 To ELABORATE: 10 ppm is the exposure value of conventional mixing in open bowl in the breathing zone. And the exposure LIMIT LIES in the range of 50-100 ppm in Europe.

Discussion

26.	Rapid evaporation may cause plastic shrinkage __________(a) Elastic shrinkage(b) Plastic shrinkage(c) High workability(d) Good strengthThis question was posed to me during an online exam.The query is from Hot Weather Concreting, Prepacked and Vacuum Cement in section Special Concrete and Concreting Methods of Concrete Technology
Answer» The correct OPTION is (b) Plastic shrinkage The best explanation: Rapid evaporation MAY cause plastic shrinkage and cracking and SUBSEQUENT cooling of hardened concrete WOULD introduce tensile stresses.

Discussion

27.	Steel fibers helps in the enhancement of its properties.(a) True(b) FalseThis question was addressed to me during an interview.The doubt is from Factors Affecting PIC, Cold Weather Concreting in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» Right choice is (a) True The EXPLANATION: Steel FIBERS, GLASS fibers, CARBON fibers, and polyester fibers have been added to in PIC for ENHANCEMENT of its properties.

Discussion

28.	________ is the most commonly used.(a) Conglomerate(b) Gneiss(c) Marble(d) PumiceThis question was addressed to me in an online interview.My question is taken from Light Weight Concrete in section Special Concrete and Concreting Methods of Concrete Technology
Answer» Right OPTION is (d) Pumice Explanation: Pumice is the most COMMONLY used and is actually a GLASS that forms when FROTHY volcanic ERUPTIONS cool quickly into rock.

Discussion

29.	What is the compressive strength of this concrete?(a) 60-115 MPa(b) 10-16 MPa(c) 35-50 GPa(d) 500 GPaThis question was addressed to me in final exam.Enquiry is from Sulphur Infiltrated Concrete, FRC in section Special Concrete and Concreting Methods of Concrete Technology
Answer» The CORRECT ANSWER is (a) 60-115 MPa For EXPLANATION: 60-115 MPa is the compressive STRENGTH of the Sulphur concrete where as OPC has 15-60 MPa.

Discussion

30.	________ is also something used as the aggregate component of lightweight concretes.(a) Conglomerate(b) Gneiss(c) Marble(d) DiatomiteThis question was addressed to me during an interview.This key question is from Light Weight Concrete topic in division Special Concrete and Concreting Methods of Concrete Technology
Answer» Correct choice is (d) Diatomite The best EXPLANATION: Diatomite is also something USED as the aggregate COMPONENT of LIGHTWEIGHT CONCRETES. Diatomite is also known as diatomaceous earth.

Discussion

31.	In making precast structural units for partition and wall lining purposes, the concrete should be __________(a) Vacuum concrete(b) LWC(c) Prestressed concrete(d) Sawdust concreteI have been asked this question in quiz.My question is taken from Light Weight Concrete in section Special Concrete and Concreting Methods of Concrete Technology
Answer» Correct option is (B) LWC The explanation is: In making PRECAST STRUCTURAL units for PARTITION and wall lining purposes, the concrete should be LWC.

Discussion

32.	SCC has __________ viscosity.(a) Low(b) High(c) Medium(d) 75%I have been asked this question in class test.My doubt is from Complexity in Special Concrete, India in SCC topic in section Special Concrete and Concreting Methods of Concrete Technology
Answer» CORRECT option is (c) Medium The best explanation: Self-consolidating CONCRETE or self-compacting concrete (COMMONLY called as SCC) is a concrete mix which has a medium VISCOSITY.

Discussion

33.	On cooling below 1250^oC, C3S decomposes ______(a) Fast(b) Slowly(c) Never(d) Depends on the conditionsThe question was posed to me in an online interview.My question comes from Various Testing Methods topic in division Special Concrete and Concreting Methods of Concrete Technology
Answer» RIGHT option is (B) Slowly The best I can explain: On cooling below 1250^oC, C3S decomposes slowly but, if cooling is not too SLOW, C3S remains unchanged and is relatively stable at ordinary TEMPERATURES.

Discussion

34.	Cement has ________ % volumetric shrinkage after curing.(a) 5(b) 6(c) 7(d) 8I had been asked this question by my school teacher while I was bunking the class.My doubt is from Hot Weather Concreting, Prepacked and Vacuum Cement topic in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» The CORRECT answer is (a) 5 Easiest explanation: Option a is the correct one because cement has 3-5% VOLUMETRIC shrinkage after curing.

Discussion

35.	The adequate workability necessary for ___________ compaction with the compacting equipment available.(a) Half(b) Quarter(c) Full(d) DoubleThis question was posed to me in examination.My doubt stems from Mix Design topic in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» RIGHT answer is (C) Full The best explanation: Option d can be eliminated EASILY because double compaction is not POSSIBLE. The adequate WORKABILITY necessary for full compaction with the compacting equipment available.

Discussion

36.	________ viscosity liquid monomers are impregnated with the hardened cement composite structure.(a) High(b) 0(c) Low(d) Very highThe question was posed to me in final exam.Enquiry is from Concrete Cloth, Polymer Impregnated Concrete topic in section Special Concrete and Concreting Methods of Concrete Technology
Answer» The CORRECT choice is (c) Low The BEST I can explain: For MAKING the POLYMER impregnated concrete, the pre-polymers or the low viscosity liquid monomers are partially or fully impregnated with the hardened cement COMPOSITE structure.

Discussion

37.	What is the 7 day bending failure stress in N/mm^2?(a) 40(b) 1500(c) 3.3(d) 180This question was addressed to me by my college professor while I was bunking the class.Question is taken from Concrete Cloth, Polymer Impregnated Concrete topic in division Special Concrete and Concreting Methods of Concrete Technology
Answer» RIGHT answer is (c) 3.3 Best explanation: This test is based on BS EN 12467:2004 and the 7 day bending failure STRESS is 3.3 N/mm^2.

Discussion

38.	_______ % is the range for absorptivity of this concrete.(a) 1-4(b) 5(c) 0-1(d) 9-15This question was posed to me in final exam.Asked question is from Sulphur Infiltrated Concrete, FRC in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» CORRECT choice is (c) 0-1 To explain: 0 % to 1% is the range for ABSORPTIVITY of Sulphur in FILTERED concrete and 5 % is the range for OPC.

Discussion

39.	Which one is not used as air entraining agents?(a) Alumina(b) Natural resins(c) Fats(d) OilThe question was asked in an interview.Asked question is from Mix Design of LWC, Aerated Concrete topic in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» The correct answer is (a) ALUMINA Easiest EXPLANATION: Natural resins, FATS, oils are used as AIR ENTRAINING agents not alumina.

Discussion

40.	What is the normal time to get uniform mixing?(a) 30 seconds(b) 2 or more minutes(c) 1 minutes(d) 24 hoursThis question was posed to me in an internship interview.My enquiry is from Mix Design of LWC, Aerated Concrete in division Special Concrete and Concreting Methods of Concrete Technology
Answer» RIGHT choice is (b) 2 or more minutes Best explanation: Mixing is done continuously as REQUIRED for HOMOGENEITY. Usually, 2 or more minutes are required to GET UNIFORM mixing.

Discussion

41.	What is the amount of mixing water used to make LWC?(a) 1/2(b) 2/3(c) 1/4(d) 1/3I had been asked this question in my homework.My doubt stems from Mix Design of LWC, Aerated Concrete topic in section Special Concrete and Concreting Methods of Concrete Technology
Answer» Correct choice is (b) 2/3 Explanation: The GENERAL practice for structural light-weight concrete is to MIX the aggregate and about 2/3 of the mixing water for a period upto one MINUTE PRIOR to the addition of cement and the BALANCE mixing water.

Discussion

42.	Density of no fines concrete with light weight aggregate vary from ________ kg/m^3.(a) 1600-1900(b) 2500(d) >300The question was asked in an interview for job.The query is from Special Concrete topic in chapter Special Concrete and Concreting Methods of Concrete Technology
Answer» Correct choice is (b) <300 Easiest explanation: The RANGE of the density of no FINES aggregates with the LIGHT WEIGHT aggregates vary from less than 300 kg/m^3.

Discussion

43.	The loss in weight should not exceed ______ percent when tested with sodium sulphate and ______ percent with magnesium sulphate solution.(a) 12, 18(b) 18, 12(c) 10, 15(d) 15, 10I had been asked this question during an interview for a job.I'd like to ask this question from Various Testing Methods topic in portion Special Concrete and Concreting Methods of Concrete Technology
Answer» Correct CHOICE is (a) 12, 18 Best explanation: The loss in weight should not exceed 12 percent when TESTED with sodium sulphate and 18 percent with magnesium sulphate SOLUTION.

Discussion

44.	This type of concrete possesses __________(a) High insulating property(b) High conducting property(c) Low insulating property(d) Very high insulating propertyThis question was addressed to me in examination.I'm obligated to ask this question of Light Weight Concrete in division Special Concrete and Concreting Methods of Concrete Technology
Answer» Right ANSWER is (d) Very HIGH insulating property The best EXPLANATION: This type of concrete possesses the high insulating and low conducting property. THERMAL INSULATION is the reduction of heat transfer between objects in the range of radiative influence.

Discussion

45.	The light-weight concrete is prepared by ____________(a) Mixing Portland cement with sawdust in specified proportion in the concrete(b) Using coke-breeze, slag as aggregate in the concrete(c) Mixing Al in the concrete(d) Mixing Fe in the concreteI got this question in my homework.Enquiry is from Special Concrete in portion Special Concrete and Concreting Methods of Concrete Technology
Answer» The correct option is (B) Using coke-breeze, slag as aggregate in the CONCRETE The EXPLANATION: The light-weight concrete is PREPARED by using coke-breeze, cinder or slag as aggregate in the concrete.

Discussion

46.	In the soundness test a specimen of hardened cement paste is _______ for a fixed time.(a) Freeze(b) Dry(c) Boiled(d) Dipped in waterThe question was asked in examination.I want to ask this question from Various Testing Methods topic in section Special Concrete and Concreting Methods of Concrete Technology
Answer» The correct option is (C) BOILED The explanation is: A SPECIMEN of hardened cement PASTE is boiled for a fixed time so that if there is any tendency of increase or decrease in size can be detected.

Discussion

47.	Coarse aggregates which has been used in this is of __________(a) 10 mm(b) 20 mm(c) 15 mm(d) 25 mmI got this question in an interview.I'd like to ask this question from No Fines Concrete, High Density Concrete topic in section Special Concrete and Concreting Methods of Concrete Technology
Answer» RIGHT answer is (a) 10 MM For explanation I would say: Normally COARSE aggregates passing from 20 mm SIEVE and retained on 10 mm sieve which is further used for this type of CONCRETE.

Discussion

48.	Main component in this concrete is _______(a) Cement(b) Sulphur(c) Sulphur and aggregates(d) AggregatesThe question was asked in my homework.The question is from Sulphur Infiltrated Concrete, FRC topic in section Special Concrete and Concreting Methods of Concrete Technology
Answer» The correct choice is (C) Sulphur and aggregates For EXPLANATION I WOULD say: Sulphur concrete is a composite construction material, composed MAINLY of sulphur and aggregate (GENERALLY a coarse aggregate made of gravel or crushed rocks and a fine aggregate such as sand).

Discussion

49.	The light-weight concrete is prepared by ________(a) Mixing Portland cement with sawdust in specified proportion in the concrete(b) Using coke-breeze, slag as aggregate in the concrete(c) Mixing Al in the concrete(d) Mixing Fe in the concreteThis question was addressed to me in an interview for job.I'm obligated to ask this question of Mix Design of LWC, Aerated Concrete in section Special Concrete and Concreting Methods of Concrete Technology
Answer» The correct choice is (B) Using coke-breeze, SLAG as aggregate in the CONCRETE The BEST I can explain: The light-weight concrete is prepared by using coke-breeze, cinder or slag as aggregate in the concrete.

Discussion

50.	The strength of the resulting concrete is _______ % lower than when dry aggregate is used for the same content.(a) 5-10(b) 10-15(c) 15-20(d) 0-5This question was posed to me during an internship interview.This key question is from Mix Design of LWC, Aerated Concrete topic in division Special Concrete and Concreting Methods of Concrete Technology
Answer» The correct CHOICE is (a) 5-10 Easy EXPLANATION: It has been seen that the strength of the resulting concrete is about 5 to 10 percent LOWER than when dry aggregate is used for the same content and workability.

Discussion

Explore topic-wise InterviewSolutions in .

What is the thickness of the steel fiber after silting in mm?(a) .3-.5(b) .25(c) .155-.41(d) .25-.90This question was posed to me during an interview.I'd like to ask this question from Sulphur Infiltrated Concrete, FRC in section Special Concrete and Concreting Methods of Concrete Technology

SCC has __________ yield stress.(a) Low(b) High(c) Medium(d) 75%This question was posed to me during an internship interview.This key question is from Complexity in Special Concrete, India in SCC topic in portion Special Concrete and Concreting Methods of Concrete Technology

What is the range of contraction for this concrete in mm/m?(a) .5-1(b) .6(c) 1I have been asked this question during an interview for a job.I'd like to ask this question from Sulphur Infiltrated Concrete, FRC topic in division Special Concrete and Concreting Methods of Concrete Technology

What is the 7th day compressive failure stress in N/mm^2?(a) 40(b) 1500(c) 38(d) 180The question was asked in unit test.Origin of the question is Concrete Cloth, Polymer Impregnated Concrete topic in chapter Special Concrete and Concreting Methods of Concrete Technology

What is the 10 day compressive failure stress in N/mm^2?(a) 40(b) 1500(c) 3.4(d) 180This question was posed to me in an online quiz.Question is from Concrete Cloth, Polymer Impregnated Concrete in chapter Special Concrete and Concreting Methods of Concrete Technology

Diameter of Round Steel Fiber lies in the range of _______ mm.(a) .3-.5(b) .25-.75(c) .155-.41(d) .25-.90I got this question in unit test.The above asked question is from Sulphur Infiltrated Concrete, FRC in chapter Special Concrete and Concreting Methods of Concrete Technology

Aggregates with a specific gravity of _________ are called lightweight aggregates.(a) 2.8(d) > 3I got this question during an online interview.My question is from Light Weight Concrete in section Special Concrete and Concreting Methods of Concrete Technology

What is the density for this concrete in kg/m^3?(a) 2400(b) 2200(c) 2000(d) 1800I have been asked this question during an interview for a job.My query is from Sulphur Infiltrated Concrete, FRC topic in chapter Special Concrete and Concreting Methods of Concrete Technology

SCC has __________ deformability.(a) Low(b) High(c) Medium(d) 75%The question was asked by my college professor while I was bunking the class.The doubt is from Complexity in Special Concrete, India in SCC in division Special Concrete and Concreting Methods of Concrete Technology

SCC has ___________ segregation resistance.(a) Good(b) Bad(c) Average(d) PoorThis question was posed to me in an interview for job.This interesting question is from Complexity in Special Concrete, India in SCC in section Special Concrete and Concreting Methods of Concrete Technology

Steel fibers helps in the enhancement of its properties.(a) True(b) FalseThis question was addressed to me during an interview.The doubt is from Factors Affecting PIC, Cold Weather Concreting in chapter Special Concrete and Concreting Methods of Concrete Technology

________ is the most commonly used.(a) Conglomerate(b) Gneiss(c) Marble(d) PumiceThis question was addressed to me in an online interview.My question is taken from Light Weight Concrete in section Special Concrete and Concreting Methods of Concrete Technology

What is the compressive strength of this concrete?(a) 60-115 MPa(b) 10-16 MPa(c) 35-50 GPa(d) 500 GPaThis question was addressed to me in final exam.Enquiry is from Sulphur Infiltrated Concrete, FRC in section Special Concrete and Concreting Methods of Concrete Technology

SCC has __________ viscosity.(a) Low(b) High(c) Medium(d) 75%I have been asked this question in class test.My doubt is from Complexity in Special Concrete, India in SCC topic in section Special Concrete and Concreting Methods of Concrete Technology

On cooling below 1250^oC, C3S decomposes ______(a) Fast(b) Slowly(c) Never(d) Depends on the conditionsThe question was posed to me in an online interview.My question comes from Various Testing Methods topic in division Special Concrete and Concreting Methods of Concrete Technology

The adequate workability necessary for ___________ compaction with the compacting equipment available.(a) Half(b) Quarter(c) Full(d) DoubleThis question was posed to me in examination.My doubt stems from Mix Design topic in chapter Special Concrete and Concreting Methods of Concrete Technology

_______ % is the range for absorptivity of this concrete.(a) 1-4(b) 5(c) 0-1(d) 9-15This question was posed to me in final exam.Asked question is from Sulphur Infiltrated Concrete, FRC in chapter Special Concrete and Concreting Methods of Concrete Technology

Which one is not used as air entraining agents?(a) Alumina(b) Natural resins(c) Fats(d) OilThe question was asked in an interview.Asked question is from Mix Design of LWC, Aerated Concrete topic in chapter Special Concrete and Concreting Methods of Concrete Technology

What is the normal time to get uniform mixing?(a) 30 seconds(b) 2 or more minutes(c) 1 minutes(d) 24 hoursThis question was posed to me in an internship interview.My enquiry is from Mix Design of LWC, Aerated Concrete in division Special Concrete and Concreting Methods of Concrete Technology

What is the amount of mixing water used to make LWC?(a) 1/2(b) 2/3(c) 1/4(d) 1/3I had been asked this question in my homework.My doubt stems from Mix Design of LWC, Aerated Concrete topic in section Special Concrete and Concreting Methods of Concrete Technology

Density of no fines concrete with light weight aggregate vary from ________ kg/m^3.(a) 1600-1900(b) 2500(d) >300The question was asked in an interview for job.The query is from Special Concrete topic in chapter Special Concrete and Concreting Methods of Concrete Technology

Coarse aggregates which has been used in this is of __________(a) 10 mm(b) 20 mm(c) 15 mm(d) 25 mmI got this question in an interview.I'd like to ask this question from No Fines Concrete, High Density Concrete topic in section Special Concrete and Concreting Methods of Concrete Technology

Main component in this concrete is _______(a) Cement(b) Sulphur(c) Sulphur and aggregates(d) AggregatesThe question was asked in my homework.The question is from Sulphur Infiltrated Concrete, FRC topic in section Special Concrete and Concreting Methods of Concrete Technology