ABSTRACT
The Olivenhain dam will be a new roller-compacted concrete (RCC) gravity dam located near San Diego, California. The maximum height of the dam is 318 feet (97 m) and maximum length is 2586 feet (788 m). The dam will be the largest RCC dam constructed in the United States.
The dam was constructed with the idea that high production with good quality control would result in high performance of RCC properties. For this goal, a RCC mix that had a high workability and cohesiveness was selected. The optimum workability was between 15 to 17 seconds of loaded Vebe time.
During placement, workability was maintained by adjusting the batch water quantity not to exceed the maximum amount. The in-situ density was achieved with minimum compactive effort. This efficient process led to an excellent production rate as two new World Production Records were set despite work hour limitations due to environmental and residential considerations.
