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Permeability in concrete is studied towards providing for, or guarding against, which of the following features? 1. The penetration by materials in solution may adversely affect the durability of concrete; moreover, aggressive liquids 'attack' the concrete. 2. In the case of reinforced concrete, ingress of moisture and air will result in corrosion of steel leading to an increase in the volume of steel, resulting in cracking and swilling of the concrete cover. 3. The moisture penetration depends on permeability and if the concrete can become saturated with water it is less vulnerable to frost action.
In reinforced concrete, pedestal is defined as a compression member, whose effective length does not exceed its least lateral dimension by
The use of a pickup felt while the web is still in contact with the forming material so that there is no unsupported web during the transfer. An open draw is delayed until several press nips have been passed. An unsupported web is called _________
Study the following information carefully to answer the questions given below. AGS organization is conducting an interview. Following are the criteria for a certain post. All these cases are given as of 1.05.2017. The candidate must: A. Be an engineering graduate with at least 70% marks. B. Be not less than 21 years and not more than 30 years of age as of 1.05.2017. C. Have passed the selection test with at least 60% marks. D. Be willing to pay a deposit of 60,000/-, to be refunded on completion of training. However, if the candidate fulfills the above-mentioned criteria except: I. At (A) above, but has appeared for the last semester examination, and has obtained an aggregate of 75% marks in first 7 semesters, his/her case may be referred to the V.P of the company. II. At (D) above, but is willing to pay an amount of at least Rs. 30,000/- and has obtained at least 80% marks at engineering degree, his/her case may be referred to the general manager of the company. Ranjith has appeared for the last semester of the engineering degree exam and expects to score as least 76% marks. His aggregate score up to the first 7 semesters is 82%. He has just completed 21 years of age as of 1.05.2017. He has scored 63% in the selection test and is ready to pay an amount of 60,000/- as a deposit.
Consider the following statements related to the advantages of concrete sleepers : 1. Concrete sleepers can generally be mass-produced using local resources. 2. Concrete sleepers are not suitable for better packing. 3. Concrete sleepers have a very long life span. 4. Concrete sleepers have no scrap value. Which of the above statements is/are correct?
Following are the conditions to select a manager for accounts in a company: 1, The candidate must be at least 30 years and not more than 40 years as on 1st January 2019. 2. Be a commerce graduate with at least 55% aggregate marks 3. Have experience of at least 10 years of accounts experience out of which at least 3 years in a managerial position in an organization. 4, Have secured at least 60% in the recruitment process. At 2 above. but has secured at least 50% aggregate marks in graduation and has secured 80% in there cruitment process, he can be referred to VP-accounts. In each question below the candidate details are provided. Read the question and answer based on the information provided. Don’t assume anything. Ram is born on 1 August 1974 and has a 60% aggregate in graduation -he has 15 years" experience in an organization with 5 years as accounts manager.
The following statements (S1, S2, S3) pertain to mass concreting. Which of the following statements are correct? S1: The materials preferred for mass concrete are: Portland cement with low heat of hydration, Pozzolanas, Aggregates (coarse and fine), Water, Admixture, Coolants. S2: Slump of mass concrete shall be the same or more than ordinary concrete work. S3: Concrete with a low water cement ratio, correctly consolidated and properly cured provides durability to mass concrete work.
Which of the following statements is/are true about the advantages of prestressed concrete structure? A. In the prestressed concrete structure, the deflection of beams is considerably reduced. B. Prestressing decreases cracks in concrete under all stages of loading. C. Prestressed concrete requires only 1/3 rd of the concrete required for R.C.C.
Consider the following statements: Presence of Na2O and K2O in concrete leads to 1. expansive reaction in concrete 2. cracking of concrete 3. disruption of concrete 4. shrinkage of concrete Which of the above statements are correct?
Consider the following statements: 1. If more water is added to concrete for increasing its workability, it results into concrete of low strength. 2. No slump is an indication of a good workable concrete. 3. Higher the slump of concrete, lower will be its workability. 4. Workability of concrete is affected by water content as well as water-cement ratio. Which of the above statements are correct?