Roller compacted concrete (RCC) is a cement pavement laid with an asphalt paver and compacted with a vibrating roller. On roads and streets, roller compacted concrete has been used only to a limited extent. However, the development of high compaction screeds has permitted better compaction immediately after the paver, providing a more even top surface. The aim of this experiment was to test roller compacted concrete on a low volume road used by heavy vehicles and to follow the results over a number of years in regard to evenness, friction and cracking. The roller compacted concrete pavement, which is 180 mm thick, was laid with a high-compaction asphalt paver. Final compaction was performed with a vibrating roller equipped with rubber-treaded rollers. The measured mean friction was good, with a friction value of over 0.70. However, the pavement became somewhat uneven. On the other hand it should be possible to set somewhat lower evenness specifications on low volume roads with low traffic speeds. No major damage has been observed when inspecting the pavement. Observation of the test road will continue over a number of years. (A)
Abstract