Sample splitters must have how many equal width chutes for fine aggregate?

Sample splitters used for fine aggregate must have 12 equal width chutes to ensure a proper random distribution of the sampled material. This design plays a crucial role in obtaining a representative sample from a bulk aggregate material.

Having 12 chutes allows for a more effective division of the material, minimizing segregation and promoting uniformity in the sample taken. When aggregates are split into multiple smaller portions, the likelihood of obtaining a sample that accurately reflects the properties of the original material increases. This is particularly important in maintaining quality control and ensuring the integrity of test results, as variations in aggregate properties can significantly impact the performance of concrete and other materials.

The choice of 12 chutes is standardized in many testing protocols, including those employed by organizations like the ACI, to facilitate consistency and reliability in aggregate testing practices.