Case Studies on Deterioration of Concrete Structures due to Alkali-Silica Reaction (ASR) and its Recent Rehabilitaion Techniques
By Y. Kubo and K. Torii
Concrete Journal, Vol.40, No.6, Jun. 2002
- Synopsis
- Recently, case studies on concrete structures severely deteriorated by alkali-silika expansion have been reported. When the alkali-silica expansion is excessively accelerated by the environmental condition around concrete structure, it is suggested that the damages such as the reduction in bond strength between concrete cover and steel reinforcement bar, the reduction in compressive strength of internal concrete, and the yielding or breaking of steel reinforcement bar will occur to a significant extent. In this paper, typical cases and recent rehabilitation techniques for ASR-affected concrete structures are introduced with the photographs of damages of ASR-affected concrete structures.
- Keywords:
- alkali-silika reaction, deterioration mechanism, repair and strengthening strategies, cases of ASR-affected concrete structures
