Seismic Performance of Concrete Piers Deteriorated by Alkali
Silica Reaction
By K. Osada, K. Ono, T. Maruya and S. Ikeda
Concrete Journal, Vol.44, No.3, Mar. 2006
- Synopsis
- It has been reported that reinforcing bars are broken at the bending position due to concrete expansion caused by alkali silica reaction. However, most of the structures deteriorated by alkali silica reaction with no broken reinforcement have not been inspected in detail and effective countermeasures have not seen yet. This report shows that reinforcing steel strain of concrete substructures deteriorated by alkali silica reaction is almost 1 000 u through the nationwide survey and that no clear degradation of bending load capacity was observed by static reversed cyclic loading test using beam specimens expanded by alkali silica reaction with steel strain of under 1 000 u.
- Keywords:
- concrete pier, alkali silica reaction, seismic performance, axis expansion of reinforcement, static reversed cyclic loading test, fiber model
