THE EFFECTS OF RESTRAINT ON ASR EXPANSION OF REINFORCED-CONCRETE

This paper presents the results of tests relating the expansion of con crete specimens with alkali-silica reaction (ASR) to applied constant stresses, both tensile and compressive, and reinforcement ratio. The r esults were compared with those found by other researchers and to two proposed mathematical models. Additionally, the effects of rate of exp ansion, specimen size and shape, and orientation of restraint were inv estigated. It was concluded that size of specimen and orientation of r estraint were important factors, and that the relationship between res traint and expansion could be modelled mathematically but the amount o f data required restricted the model's practical use.