Which aggregate type passes through a 4.75 mm sieve with a minimum size of 0.06 mm?

Which aggregate type passes through a 4.75 mm sieve with a minimum size of 0.06 mm?

• A. Fine Aggregate
• B. Rounded Aggregate
• C. Irregular Aggregate
• D. Angular Aggregate

Answer: (A)

The key idea is classifying aggregate by its largest particle size. If material passes through a 4.75 mm sieve, it is considered fine aggregate, since none of its particles are larger than that opening. The note about a minimum size of 0.06 mm shows there are very small particles present, which is typical for fine aggregate that contains sand-sized grains and finer material. Shape descriptors like rounded, irregular, or angular describe how the grains look and how they pack, but they don’t change the size-based classification. So, with particles from about 0.06 mm up to 4.75 mm, the aggregate fits the fine aggregate category.

The key idea is classifying aggregate by its largest particle size. If material passes through a 4.75 mm sieve, it is considered fine aggregate, since none of its particles are larger than that opening. The note about a minimum size of 0.06 mm shows there are very small particles present, which is typical for fine aggregate that contains sand-sized grains and finer material. Shape descriptors like rounded, irregular, or angular describe how the grains look and how they pack, but they don’t change the size-based classification. So, with particles from about 0.06 mm up to 4.75 mm, the aggregate fits the fine aggregate category.