| Title |
An Experimental Study on the Performance of Alkalinity Recovery Agent Applied to Deteriorated Concrete Structures |
| Authors |
Kim Kwang Ki ; Park Sun-Gil ; Kim Woo Jae ; Song Byung Chang ; Chong Jae uk ; Jung Sang Jin |
| Keywords |
carbonation ; Alkalinity Recovery Agent ; pH |
| Abstract |
Carbonation is a representative mechanism of performance deterioration with the lapse of time occurring in ordinary environments. It gradually approaches to reinforcing bars inside and causes the corrosion of reinforcing bars, and finally damages the structural appearance by stripping covering concrete off or incurring sectional loss and influences the internal force of concrete members.
As an effort to prevent damages due to the carbonation of concrete structures or to improve the performance of deteriorated concrete structures, alkalinity Recovery Agent, which has the capacity to restore and reinforce concrete structure, is recently being utilized.
The outer walls of concrete structures are usually finished with mortar. Thus, mortar finish is directly exposed to carbonation and various deteriorating phenomena, and is more vulnerable to external influences for the long run than concrete inside the mortar.
Thus, it was believed that a test on mortar finish, which reacts on carbon dioxide first, would provide a base for assessing the performance of alkalinity Recovery Agent in restoring concrete, so this study examined the performance of alkalinity Recovery Agent by digesting a mortar test piece in alkalinity Recovery Agent for a certain length of time and then leaving it in the open air. |