Design Example: Managing Concrete Workability

This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This ...

Consider concreting work for a raft foundation in the hot sun.

Since the volume of concrete required is large, before preparing such large quantities, the slump test was conducted on the fresh concrete trial mix, which revealed that the workability is low.

The site engineer observed that the reason for low workability was due to th...