Civil Engineering – Concrete Technology Mock test – 3

Welcome to your Concrete Technology Mock test - 3
Take an exciting test in Concrete Technology
You have only 20 mins to complete the test (26 Questions)
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1. For concreting tunnel linings, tran-portation of concrete is done by
2. Permissible compressive strength of M 200 concrete grade is
3. Saw dust can be rendered chemically inert by boiling it in water containing
4. Efflorescence in cement is caused due to an excess of
5. If the engineer-in-charge approves, the 10 cm cubes may be used for the work test of concrete provided maximum nominal size of aggregate, does not exceed
6. The type of aggregates of same nominal size, which contain less voids when compacted, are
7. High temperature
8. The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as
9. The most useless aggregate is one whose surface texture is
10. The grade of concrete M 150 means that compressive strength of a 15 cm cube after 28 days, is
11. Slump test of concrete is a measure of its
12. For the construction of cement con-certe dams, the maximum permissible size of the aggregates, is
13. The top diameter, bottom diameter and the height of a slump mould are :
14. Workability of concrete mix with low water cement ratio is determined by
15. The diameter of the Vicat plunger is 10 mm and its length varies from
16. An ordinary Portland cement when tested for its fineness, should not leave any residue on I.S. seive No. 9, more than
17. The type of aggregates not suitable for high strength concrete and for pavements subjected to tension, is
18. Water cement ratio is
19. The condition not applicable to water cement ratio law, is
20. If the effective working time is 7 hours and per batch time of concrete is 3 minutes, the output of a concrete mixer of 150 litre capacity, is
21. Allowable shear strength of concrete, depends upon
22. To obtain a very high strength concrete, use very fine grained
23. The aggregate containing moisture in pores and having its suface dry, is known as
24. To hydrate 500kg of cement full water needed, is
25. Pick up the incorrect statement from the following:
26. The operation of removing humps and hollows of uniform concrete surface, is known as

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