Method C, miniature stockpiling, cannot be used for which type of aggregate?

Method C, miniature stockpiling, is specifically designed for smaller quantities of aggregates and is particularly effective for managing and testing fine aggregates. This method allows for easy handling and efficient monitoring of the moisture content and segregation of finer materials.

Coarse aggregates, on the other hand, are typically larger and require different storage methods to prevent segregation and ensure accurate sampling. Due to their larger size and the higher potential for segregation, using miniature stockpiling for coarse aggregates is impractical. This method cannot adequately mitigate the challenges presented by coarse particles, which could lead to inaccurate testing or compromised consistency in the sample.

The other choices do not reflect the limitations of Method C accurately. Fine aggregates can be successfully managed with this method, and while coarse aggregates may be involved in mixtures, the specifics of Method C are not suited for them. Thus, it is essential to utilize appropriate methods tailored to the characteristics of different aggregate types to achieve reliable testing results.