Florida DOT Concrete Batchman/Operator Practice Exam

Cementitious materials must be weighed separately from which of the following?

1. Water

2. Aggregate

3. Other materials

4. Admixtures

The correct answer is: Other materials

Cementitious materials must be weighed separately from other materials to ensure accurate batching and to maintain the integrity of the concrete mix design. This separation is crucial as it prevents cross-contamination and ensures that each component is accurately measured according to the specifications provided for the concrete mix. Cementitious materials, such as cement and fly ash, have specific properties and weight requirements that must be adhered to for the concrete to achieve its desired strength and durability. By weighing these materials separately from other components, the batch operator can ensure that the mix will perform as intended. In the context of the question, weighing cementitious materials separately from water, aggregate, and admixtures is integral to maintaining the quality and consistency of the final product. Each of these materials plays a significant role in the characteristics of the concrete, and their accurate proportions are critical for achieving optimal performance.