Roller-compacted concrete (RCC) for pavements combines the technologies of cement-treated aggregate base (soil-cement) and portland cement concrete to produce a rigid slab of moderately high strength capable of carrying heavy wheel loads. Aggregate should be well-graded gravel or crushed rock, 100 percent passing the 7/8-in.(22-rnrn) sieve. Fine aggregate up to 14 percent passing the No. 200 (75-µrn) sieve is acceptable. RCC for heavy-duty pavement has been used in British Columbia since 1976. The first installa~ ion was a 4-acre (1.6-hectare) log-sorting yard on Vancouver Island. Since that time 10 other RCC heavy-duty pavements have been built. In 1983 a coal storage area using RCC was the first project in a severe winter climate. In 1985 RCC was used for container storage areas in Houston, Texas, and Tacoma, Washington. The us Army Corps of Engineers built heavy-duty RCC pavements to carry military vehicles at Fort Hood, Texas, and Fort Lewis, Washington. An aircraft parking area was built at Portland, Oregon--the first use at an airport. Some of the most significant projects that have been built since 1976 are reviewed and the construction process is described.

Roller-compacted concrete (RCC) has been used over the last 10 to 12 years in several parts of the world, primarily in water control structures. During that same period, a soil-cement type mixture with 12 to 14 percent portland cement content was being used for heavy-duty pavements in the forest industry of British Columbia, Canada. Because the materials and mixing process for both the darns and pavements are similar, the term" roller-compacted concrete" has been chosen to describe the heavy-duty pavement construction process.