National Concrete Pavement Technology Center

Project description

Roller-compacted concrete (RCC) is increasingly becoming an alternative pavement type because of its construction expediency, reductions in material and construction costs, sustainability benefits, and overall structural capacity. Current RCC pavement mix design procedures select mix constituents and proportions based on strength requirements, workability, and field density. Discrepancies in mechanical properties are known to exist between field and laboratory compacted specimens. In order to move toward designing and constructing performance-based RCC mixtures—the effects of various mixture constituents, proportions, and compaction methods must be quantified. The gap between laboratory and field properties must be minimized as well. A wide range of RCC aggregate gradations were batched, tested, and found to impact RCC properties—especially compressive strength.