Daytona International Speedway began installing reinforced concrete in Turn 2 on Thursday, track president Robin Braig said.
Following a comprehensive review of Turn 2 by a team of engineers and asphalt specialists with North American Testing Corporation (NATC), it was decided to repair the damaged portion of the track as an immediate first step. NATC is conducting a thorough evaluation of the entire track and upon completion will implement all necessary solutions (including repaving, if necessary) to ensure the long-term integrity of the track.
A hole approximately 18in. long developed in the lower groove of Turn 2 during the Daytona 500, forcing NASCAR officials to halt the race under a red flag Sunday afternoon. The stoppage came 122 laps into the race. The race was red-flagged a second time with only 39 laps remaining after the patch crumbled.
After the race, Braig apologized for the hole and the delays that caused many fans to head to the exits long before the finish.
"We're the 'World Center of Racing.' This is the Daytona 500. This is not supposed to happen, and I take full responsibility," Braig said after the race. "We can come back from this. We know how to fix it. This is hallowed ground. We understand that. We accept the responsibility. Our team of engineers and asphalt specialists with North American Testing Corporation has previous experience with concrete being used on an asphalt track and it is a proven solution."
The damaged area of the track is along the 31 degrees of banking in Turn 2, making the utilization of concrete the best solution. The repairs will take about two days to complete followed by several days of cure time.
The engineering team concluded that a combination of unusually cold and wet weather exacerbated by racecars bottoming out in that section of the track contributed to the breakdown of the pavement.