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