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Arnold Shelton
Management consultant
Asked a question 2 years ago

Concrete mix proportion for ungraded aggregates?

What to do if aggregate is not in grading, 10mm and 20mm both are in coarser side?

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If the aggregates are on the coarser side or the they are not uniformly graded, then the gaps will be left between the aggregates in concrete even after compaction. These gaps will affect the strength and durability of concrete.

So, in order to avoid above problem, uniformly graded aggregates must be used.