The feasibility of concrete overlay for Korean conditions, design and construction methodologies are reviewed and a 290m special test section is constructed near Jirisann I/C in 88 Express Highway. Overlay types includes 6 and 10㎝ UBCO(Unbonded Conc...
The feasibility of concrete overlay for Korean conditions, design and construction methodologies are reviewed and a 290m special test section is constructed near Jirisann I/C in 88 Express Highway. Overlay types includes 6 and 10㎝ UBCO(Unbonded Concrete Overlay). For about one month after construction, the behaviors of the overlay are monitored in terms of temperature changes, joint behavior, delamination, and cracking. So far the overall constructions of the overlays are very good.