The weathering of asphalt presents itself in two main ways; oxidation and raveling.
Transverse cracks extend across the pavement at 45 to 90 degree angles to the pavement's centerline.
Asphalt, commonly known as blacktop or pavement, is a material mixture of aggregates bound together with liquid asphalt cement that is installed in layers or "lifts", then compacted for a wide array of applications such as roads and parking lots. There are many different types of asphalt including hot or cold mix, Binder or wearing-course mix that are utilized depending on the season, load distress, the depth of the repair, etc., that are all dependent on what the original engineer had recommended upon installation.
Depressions in asphalt are formed due to improper construction and/or a combination of both inadequate base and load distress.
Longitudinal cracks are parallel to the pavement's centerline or laydown direction. They may be caused by:
Block cracks are interconnected cracks that divide the asphalt surface course into rectangular pieces.
Structural Failures Associated with Asphalt
Rutting is a surface depression located within the wheel paths. Pavement uplift will occur along the sides of the rut.
Patch distress occurs when a patch repair is completed in one or more areas in an existing asphalt parking lot. While attempting to bring the pavement back to like-new conditions, the patch work may experience a combination of the other 8 distresses.
Alligator or fatigue cracking is a series of interconnecting cracks caused by fatigue failure of the asphalt surface under repeated traffic load.
Edge cracking is commonly caused by moisture accumulation or load distresses on the edge of the pavement where no curb is in place.
Potholes are small, bowl-shaped depressions in the pavement surface that are most commonly under 3 feet in diameter. They generally have sharp edges and vertical sides near the top of the hole.
Joint Reflective (Longitudinal and Transverse Cracking)
Weathering (Oxidation and Raveling)
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Pavement Maintenance Solutions, Inc.
3005 Jackson Ave, South Chicago Heights, IL, United States