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Question
The maximum amount of dust which may be permitted in aggregates is
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A.
5% of the total aggregates for low workability with a coarse grading
B.
10% of the total aggregates for low workability with a fine grading
C.
20% of the total aggregates for a mix having high workability with fine grading
D.
all options are correct
Answer ( Option D)

all options are correct

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