This was a bridge restored from DB18 to DB24. Similar to Geunnungyo, we used the new construction technology no. 222 and fixed the stainless steel wire mesh on the lower parts of the slab and finished with a polymer mortar. The result was very clean, and after watching for 3 months, we did not find any small cracks. The car load test was reinforced from DB18 to DB24. However, after one year, we noticed a crack due to desquamation of the polymer mortar. Once this happens, you can't really expect a reinforcement effect. Even if this doesn't happen, if there's an earthquake or a large force, the issue could be highly alarming, but unfortunately, people do not talk about real issues like this often.
During construction, construction with stainless wire mesh installation and polymer mortar short crete
Car load test after reinforcement