As part of pavement maintenance and preservation there are different processes that can help to maintain the road network in a relatively high state of condition. One of these processes is the use of crack sealing and filling. The sealing process is a localized treatment that is used to prevent water and debris from entering cracks in asphalt and concrete pavements. The crack sealants can be asphalt emulsions, asphalt cement and different types of rubberized asphalt. Crack sealing/filling can be a very effective pavement maintenance tool.