Material Constituents and Proportioning for Roller-Compacted Concrete Mechanical Properties

Project Details
STATE

IL

SOURCE

TRID

END DATE

08/31/18

RESEARCHERS

LaHucik, Jeffrey R; Roesler, Jeffery R

SPONSORS

University of Illinois, Urbana-Champaign; Illinois Department of Transportation

KEYWORDS

Coarse aggregates; Compressive strength; Fracture mechanics; Materials; Mechanical properties; Mix design; Portland cement concrete; Roller compacted concrete; Roller compacted concrete pavements

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.
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