Exercise: Concrete Technology

Questions for: Concrete Technology

Particles of 0.002 mm size are that of
A:
clay
B:
sand
C:
gravel
D:
none of these.
Answer: A
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The main object of compaction of concrete, is:
A:
to eliminate air holes
B:
to achieve maximum density
C:
to provide initimate contact between the concrete and embedded materials
D:
all the above.
Answer: D
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An aggregate is known as cyclopean aggregate if its size is more than
A:
4.75 mm
B:
30 mm
C:
60 mm
D:
75 mm
Answer: D
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The size of fine aggregates does not exceed
A:
2.75 mm
B:
3.00 mm
C:
3.75 mm
D:
4.75 mm
Answer: D
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If a grading curve is horizontal bet-wen the portions of 20 mm I.S. Sieve and 4.75 mm I.S. Sieve, the graded aggregates do not contain
A:
20 mm particles
B:
10 mm particles
C:
4.75 mm particles
D:
all the above.
Answer: D
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