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Slump Test
The laborator...
Question

The laboratory slump result of the fresh concrete is between 25 - 50 mm. The degree of workability of such concrete is

A
very low
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B
low
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C
medium
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D
high
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Solution

The correct option is B low
Slump value : workability
25 - 50 mm : low (use in dam)
50 - 100 mm ; medium
100 - 150 mm : high

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Q. Consider the following statements:
1. If more water is added to concrete for increasing its workability, it results in concrete of low strength.
2. No slump is an indication of 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?
Q. Slump and compaction factors are two different measures of workability of concrete. For a slump of 0 to 20 mm, what is the equivalent range of compaction factor?
Q. Workability of concrete can be measured using slump, compaction factor and Vee bee time. Consider the following statements for workability of concrete.
(i) As the slump increases, the Vee bee time increases
(ii) As the slump increases, the compaction factor increases

Which of the following if TRUE?

Q. Slump and compaction factor are two different measure of workability of concrete. For a slump of 0 to 20, what is the equivalent range of compaction factor ?

Q. Consider the following statements :
1. Workability of concrete increases with the increase in the proportion of water content
2. Concrete having small-sized aggregates is more workable than that containing large-sized aggregate
3. For the same quantity of water, rounded aggregates produce a more workable concrete mix as compared to angular and flaky aggregates
4. A concrete mix with no slump shown in the slump cone test indicates its very poor workability
Which of the above statements are correct ?
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