2026 Volume 5 Issue 1 Pages 146-155
The efficacy and longevity of the inside pressure hardening and silane-based surface penetrant were evaluated in a bridge abutment affected by alkali-silica reaction (ASR). Measurements of concrete expansion conducted before and after the repair indicated that, while the expansion had significantly increased prior to repair, it exhibited only minor fluctuations post-repair in response to temperature variations. This suppression of expansion is largely attributed to the removal of water from within the cracks, achieved by replacing it with resin, and the prevention of external water ingress through resin filling. Nonetheless, over the long term, expansion tended to accumulate due to moisture supply from the rear of the abutment and residual moisture deep within the structure, with minor cracks emerging approximately four years post-repair. These findings suggest that while the repair methods applied in this study do not offer a permanent solution, they are effective in mitigating the progression rate of ASR and extending the remaining service life of the bridge abutment.
