Monitoring the performance of crack treatments is good practice, and it can be done rather quickly (1 or 2 hours) with fair accuracy. At least one inspection should be made each year to chart the rate of failure and plan for subsequent maintenance. A mid-winter evaluation is highly recommended, as it will show treatment effectiveness during a time of near maximum pavement contraction and near maximum crack opening.
As in the initial pavement/crack survey, a small representative sample of the pavement section, about 150 m, should be selected for the evaluation. The sealant or filler material in each crack within the sample section should then be visually examined to determine how well the material is performing its function of keeping out water.
