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A) increase in watercement ratio. b) increase in fineness of cement. c) decrease in curing time. d) decrease in size of aggregate. ans: b. 12. the relation between modulus of rupturefcr and characteristic strength of concrete fck is given by. a) fcr0.35vf7. b) fcr0.57f7.

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Answer: b. clarification: cobalt imparts blue colour to cement. iron oxide in different proportion imparts brown, red and yellow colour. manganese dioxide produces brown and black coloured cement. 8. low heat cement is ideal for use in the construction of dams. a) true. b) false.

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Answer: c. explanation: natural cement sets very quickly after the addition of water and hence it is not quite workable. artificial cement is preferred over this. advertisement. 2. who invented portland cement and in which year a) william aspdin, 1824.

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Cement and manufacture of cement quiz, portland cement concrete is a composite material made by combining cement, supplementary cementing materials, aggregates, water, and chemical admixtures in suitable proportions and allowing the resulting mixture to set and harden over time. because hardened concrete is a relatively.

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Question. 5 answers. . in an ftir analysis of cementitious materials (fly ash and cement combination) from 3 hours to 28 days of hydration, the peaks were identified only at upsilon (2.

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The process took 4 weeks. i interviewed at ultratech cement (new delhi) in jan 2021. interview. it was quite smooth process. entire process was consisted of 3 rounds 1.) case study submission 2.) one minute video 3. ) pi every round was elimination round. in interview they asked questions about cement industry only.

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Cement in building materials cement in building materials objective questions and answers. 26. the commonly used cement in cement paints is. 27. cement normally contains dicalcium silicate percentage equal to about. 28. for hydration of cement the water required as weight fraction of cement is. c. 0.3. d. 0.15.

Solved Question 2: (20 Marks) Discussing Setting TimeRelease Time : 13-Feb

Civil engineering questions and answers. question 2: (20 marks) discussing setting time characteristics of compounds of portland cement. question 3: (25 marks) a. calculating fineness modulus of fine aggregate a if seiving resault is shown as following: seive (mm) 4.75 2.36 1.4 1.18 0.85 0.6 0.355 0.15 0.075 pan 45 retaining mass (g) 80 30 125.

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Concrete technology civil engineering questions and answers with explanation for placement, interview preparations, entrance test. fully solved multiple choice questions and answers for competitive examinations.

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Concrete technology civil engineering questions and answers with explanation for placement, interview preparations, entrance test. fully solved multiple choice questions and answers for competitive examinations. if p, y and z are the weights of cement, fine aggregates and coarse aggregates respetively and wc is the water cement ratio, the.

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Concrete technology objective questions with answers pdf set 17 mcq concrete technology edit practice test: question set 17 . 1. the minimum cover to the ties or spirals should not be less than correct answer. 2. according to watercement ratio law, the strength of workable plastic concrete (a) depends upon the amount of water used in.

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Concrete technology objective questions with answers pdf download set 03 mcq concrete technology edit practice test: question set 03. 1. 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 cement.

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Estimating inplace concrete strength; how are properties of concrete in the structure measured how is strength estimated by the maturity method how is the abrasion resistance of concrete determined how is the air content of freshly mixed concrete determined how is the air content of hardened concrete determined.

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Question 1. what are all the types of cement answer : ordinary portland cement; opc 33,opc 43 and op c53 grade; rapid hardening cement; extra rapid hardening cement; sulphate resisting cement; portland slag cement; quick setting cement; low heat cement; portland pozzolana cement; colored cement; question 2. differentiate dry process.

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Answer. b. 5. cement is formed by strongly heating a mixture of . a. chalk and graphite . b. lime stone and clay. c. graphite and clay . d. none of these . answer. b. 6. ppc stands for. a. portland plaster cement . b. portland pozzolana cement . c. portland primary cement . d. none of these . answer. b. 7. setting time of cement is measured by . a. vicats.

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5. the separation of water or watercement mixture from the freshly mixed concrete is known as bleeding. (a) true. (b) false. answer. concrete technology viva questions. 6. the continuous strain, which the concrete undergoes due to application of external loads, is called. (a) workability.

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Cement questions and answers pdf. 61. a temporary structure constructed in a river for excluding water from a given site to enable the building operation to be performed on dry surface, is called (a) caisson (b) cofferdam (c) well foundation (d) raft foundation. answer.

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Asking carefully chosen questions helps ensure that the contractor you choose is a good match for your project. additionally, asking a variety of questions can help you cull out inexperienced and lowerquality contractors from better options. here are the ten most crucial questions to ask before choosing a contractor for your concrete project. 1.

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Multiple choice questions and answers on design of masonry structures 01. rich cement mortars are more liable to cracking as compared to lean mortars because rich mortars have (a) high shrinkage (b) less strength (c) both (a) and (b) (d) none of above answer: option a 02. in a cavity wall, both leaves of which are load bearing, the effective thickness is taken as (a).

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Question. 8 answers. oct 5, 2017. studies have shown that replacement of some percentage of portland cement with fly ash or groundgranulated blastfurnace slag (ggbs or ggbfs), reduces the.