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Soil Analysis

In sieve analysis, one of the first results measured is the % retained in each sieve of the total sample (Wsieve / Wtotal x 100%). If the illustrated sample indicates equal amounts of various sizes of aggregate, where most of the voids in such material will be filled with particles, which gradation term is used?

A. Narrow gradation
B. Gap gradation
C. Dense gradation
D. Open gradation
E. Rich gradation




Answer is C. Dense gradation. A - most of the aggregate is the same size, B - little in the medium range, D - little in the fine range, E - high proportion of fine particles.
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