How far apart can joints be placed in continuously reinforced concrete pavements?
Continuously reinforced concrete pavements have been built 40 miles long without any transverse joints. Closely spaced cracks develop in such a pavement, usually less than 0.012 inch wide. Temperature changes may cause the 400 to 1,000 feet near each end to move on the subgrade but the vast center section stays in place, contracting and expanding enough to cause minute cracks to open and close.