For fine aggregate, the sieve shaker should be run for a specific duration depending on the size of the sieves being used. According to the provided reference, for sizes 9 or larger, the sieve shaker should be run for 5 minutes. For sizes smaller than size 9, the sieve shaker should be run for 10 minutes.
It is important to note that the duration of the sieve shaker operation may vary depending on the characteristics of the material being tested. For example, if the material tends to clump or agglomerate, a shaker that can give the stack a periodic vertical shock may be more effective. If the material has a high static electricity characteristic, methods such as wet sieving may be required.
In general, sieve shakers are designed to automate the agitation of particles for their separation and distribution based on their sizes. They offer benefits such as accuracy, consistency, and repeatable separations for particle sizing, while also saving testing time compared to manual sieve shaking procedures.
When selecting a sieve shaker, it is important to consider the material being tested and the diameter of the sieves. Different shakers are designed for specific grades of material and may work better for certain particle sizes. Additionally, there are accessories available to streamline the sieving process, such as sieving agitation mechanisms and sound damping enclosures for noise reduction.
In conclusion, the sieve shaker should be run for 5 minutes for sizes 9 or larger and 10 minutes for sizes smaller than size 9 when testing fine aggregate.
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