ABSTRACT
Roller compacted concrete (RCC) projects for water resources applications in the USA have now surpassed 250 structures in 26 different states with approximately 25 new projects added each year. These projects have ranged in size and complexity from the 750 cubic meters overtopping protection at White Meadows Lake Dam in New Jersey to over 1.1 million cubic meters used at the 97 m high Olivenhain gravity dam in California. One of the main virtues of RCC always promoted is its low in-place unit cost resulting in large part from the construction techniques employed. Earth handling equipment used to transport, spread, and compact RCC helps achieve high production rates not found with conventional concrete. Many different methods have been deployed to mix, transport, spread, and compact RCC successfully. Specification writers are now identifying acceptable performance criteria and leaving most of the means and methods up to the contractor.
