Concrete Technology Set-1

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**In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively **

2 / 25

**Critical section for shear in case of flat slabs is at a distance of **

3 / 25

**The purpose of reinforcement in pre-stressed concrete is **

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**The temperature reinforcement in the vertical slab of a T-shaped R.C. retaining wall is **

5 / 25

**The main object of compaction of concrete, is: **

6 / 25

**Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to **

7 / 25

**Which of the following has high tensile strength? **

8 / 25

**To determine the modulus of rupture, the size of test specimen used is **

9 / 25

**For road pavements, the cement generally used, is **

10 / 25

**For construction of structures in sea water, the cement generally preferred to, is **

11 / 25

**In counterfort retaining walls, the main reinforcement in the stem at support is**

12 / 25

**Bulking of sand is maximum if moisture content is about **

13 / 25

**Curing of pavements, floors, roofs and slabs, is done by **

14 / 25

**For concreting of heavily reinforced sections without vibration, the workability of concreteexpressed as compacting factor should be**

15 / 25

**For a slab supported on its four edges with corners held down and loaded uniformly, the Marcuscorrection factor to the moments obtained by Grashoff Rankine’s theory **

16 / 25

Tricalcium aluminate (C3A)

17 / 25

**When shear stress exceeds the permissible limit in a slab, then it is reduced by**

18 / 25

**Due to circumferential action of the spiral in a spirally reinforced column **

19 / 25

**The workability of concrete is directly proportional to**

20 / 25

**To minimise the effect of differential settlement, the area of a footing should be designed for**

21 / 25

**The diameter of ties in a column should be **

22 / 25

**Diagonal tension in a beam **

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**Addition of pozzolana to ordinary portland cement, causes**

24 / 25

**According to IS: 4561978, the column or the strut is the member whose effective length is greaterthan **

25 / 25

**Concrete gains strength due to **

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