How much material passing a 2.00mm (No. 10) sieve is needed for silty or clayey soils in particle size analysis?

In particle size analysis, especially for silty or clayey soils, the amount of material passing through the 2.00 mm (No. 10) sieve plays a critical role in obtaining accurate results. Specifically, for silty or clayey soils, the methodology often requires a minimum of 60 grams of material for the test to ensure that there is a sufficient mass to yield representative and reliable particle size distribution results.

This amount is sufficient to enable proper analysis and minimizes the impact of any potential errors that could arise from using too small a sample. Using 60 grams allows for adequate testing of the finer fractions, which are crucial in characterizing silty or clayey materials, and aligns with standardized testing procedures that aim to achieve consistency and accuracy in soil classification.

In summary, the use of 60 grams is standardized for silty or clayey soils in particle size analysis to ensure reliable and valid results.