parking Lot Striping

Maintenance and Repair

Crack Sealing

Our company is not only limited to Parking Lot Striping and Pavement Marking. We also provide other asphalt maintenance services including crack seal and asphalt repairs.

Crack sealing is the most important first step in maintaining an asphalt pavement, but it is often the most overlooked. All cracks in asphalt or concrete surfaces can rapidly turn into major hazards. Each year, many miles of cracks in asphalt pavements are left unsealed. This allows moisture to creep under the asphalt and pavement deterioration begins. When moisture enters a pavement crack, it slowly works its way down to erode the base. The pavement begins to sink and crumble, causing more cracks to form and creating pot holes. This process is accelerated by freeze/thaw cycles of Midwest winters. Soon the area around the crack rapidly deteriorates and what could have been a small maintenance step has turned into a costly repair project. Crack sealing is a routine maintenance procedure that includes cleaning out the wide cracks and opening others so they are wide enough to accept sealant. We use a hot rubberized crack sealant which remains flexible. The material is heated to approximately 400 degrees, poured into the crack and then a proper bond and surface smoothness. It will then cool and harden inside the crack, preventing moisture penetration. The flexibility of our sealant allows cracks to remain sealed in spite of the expansion and contraction of pavement throughout the year.

TYPE OF DISTRESS POSSIBLE CAUSE
Fatigue (Alligator) Cracking
  • Excessive loading
  • Weak surface, base, or subgrade
  • Thin surface or base
  • Poor drainage
  • Any combination of above
Block Cracking
  • Old and dried out mix
  • Mix was placed too dry
  • Fine aggregate mix with low penetration asphalt & absorptive aggregates
  • Aggravated by low traffic volume
Edge Cracks
  • Lack of lateral support
  • Settlement of underlying material
  • Shrinkage of drying out soil
  • Weak base or subgrade layer
  • Poor drainage
  • Frost heave
  • Heavy traffic or vegetation along edge
Longitudinal (Linear) & Transverse Cracking
  • Poorly constructed paving joint crack
  • Shrinkage of the asphalt layer
  • Daily temperature cycling
  • Cracks in an underlying layer that reflect up through the pavement
  • Longitudinal segregation caused by the improper operation of the paver




Hot Crack Filling

Repairs consist of using a rubberized asphalt treatment intended to seal cracks in asphalt to prevent moisture from seeping below to the base and weakening the structure. This preventive measure is applied prior to seal coat to establish a good surface seal.











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