All pavements require maintenance.
They need this attention because stresses producing minor defects are constantly at work. These stresses may be caused by such things as traffic loads, temperature fluctuations, and changes in moisture content. Regardless of the cause, the result is the same-without timely maintenance the pavement ultimately deteriorates. It is easy to determine when a parking lot is in need of repair. But, without experience in pavement maintenance, it is sometimes difficult to decide just what should be done.