For areas with localized subsidence and potholes due to damage to the upper foundation and road surface (type 1 damaged structure), the contractor will excavate the damaged foundation and old road surface; restore the upper foundation layer with grade I crushed stone aggregate reinforced with 3.5% cement; restore the lower road surface layer with 7cm thick asphalt concrete; restore the upper surface layer with 5cm thick asphalt concrete to the old road surface elevation. The total area of the type 1 damaged structure treatment is about 10,740m2 .
In any location where the road surface is cracked or peeling (type 2 damaged structure), the contractor will scrape off the old damaged road surface structure with a thickness of 5cm; restore the upper layer with 5cm thick asphalt concrete to the old road surface elevation. The total area of the part to be treated with type 2 damaged structure is about 4,972m2 .
Quang Nam Newspaper reported that due to the impact of heavy rain from December 6 to December 26, 2024 and the rain from January 9 to January 14, 2025, the road surface of km32+126 - km73+254 on National Highway 14B (through Dai Loc and Nam Giang districts) was damaged. The above situation causes difficulties for vehicles participating in traffic, potentially posing a risk to traffic safety.
Immediately after the damage occurred, the industry reviewed the damaged road surface locations within the scope of periodic repair projects (from 2022 to 2024) to request the implementation of construction warranty responsibilities for 630m2 of damaged road surface . The remaining damage is outside the scope of the project (about 15,238m2 ), the Department of Transport has directed the regular maintenance contractor to arrange forces to guide and regulate traffic and immediately carry out the work of leveling and flattening the locally damaged road surface locations, ensuring traffic.
In order to have a basis for implementing activities to overcome the consequences of natural disasters and restore traffic activities according to regulations, the Department of Transport has proposed that the Vietnam Road Administration approve the scale and solutions to reinforce and restore the old structure at damaged locations of foundations and road surfaces.
The Vietnam Road Administration has agreed on a solution to restore the old structure at damaged foundation and road surface locations as proposed by the Quang Nam Department of Transport above.
Source: https://baoquangnam.vn/sua-chua-nhieu-doan-mat-duong-hu-hong-tren-quoc-lo-14b-3148157.html
Comment (0)