Florida DOT Concrete Batchman/Operator Practice Exam

For what purpose is a vibratory system required in cement bins?

1. To increase cement durability

2. To aid the flow of cement from the bins

3. To prevent moisture accumulation

4. To measure cement weight

The correct answer is: To aid the flow of cement from the bins

The requirement of a vibratory system in cement bins serves primarily to aid the flow of cement from the bins. Cement, particularly when stored in bins, can become compacted or caked due to its fine particle size and the pressure from the material above. This compaction can hinder the smooth flow of the cement when it is needed for batching. A vibratory system effectively agitates the material, reducing friction and allowing it to flow more freely and consistently out of the bin into the mixing equipment. This ensures that the batching process remains efficient and that the correct proportions of materials are maintained for quality concrete production. While other functions such as moisture prevention and weight measurement are important in the overall cement handling process, they are not the primary reason for the use of a vibratory system in cement bins.