We are observing the cracking condition of HPC pavement. We used ultrasonic equipment and 3D GPR equipment to inspect cracks. The depth and the deterioration of cracks were good during observation. We are going to observe the crack with caution.

We know that the failure of high performance concrete pavement occurs in the aspects of its structure, environment, material, and construction. We have been able to identify the reason why no construction should be permitted when average daily temperature is below 4 degree celsius. We must pay careful attention to the curing management and comply with the standards of concrete production and construction.

During maintenance, we closely examined the reinforced section where concrete has cracked at the time of cable installation. We confirmed that there has not been any sight of new cracks or growth of existing cracks. For the following year of Investigation, we plan to conduct close inspection of the reinforced section.

Improved measurement and structural modeling analysis of result, an improved method is very efficient. The difference of about 10~15% comes out, Improved measurement and structural modeling analysis of result, it is determined that the need for additional research, such as a change of the modeling subdivision, load contions.