Using Recycled Concrete Aggregate in New Concrete Construction

Project Details
STATE

US

SOURCE

RIP

START DATE

01/01/13

END DATE

12/14/18

RESEARCHERS

Mountain-Plains Consortium

SPONSORS

RITA

KEYWORDS

Aggregates, Alkali silica reactions, Cheyenne (Wyoming), Concrete construction, recycled concrete aggregate

Project description

The Rocky Mountain Region has experienced difficulty due to the presence of alkali-silica reaction (ASR) in new concrete construction. Cheyenne, WY produces a source of aggregate this is highly susceptible to ASR damage. Poorly performing concrete can be removed, crushed and used as aggregate in new concrete. This proposal aims to develop precision and bias statements for using recycled concrete aggregates (RCAs) as material in new concrete construction. Preliminary research indicates that small percentages of ASR affected RCA can be used in new concrete construction without creating harmful ASR expansions.
TOP