Condition Rating Systems

Condition Rating Systems

Condition Rating Systems Based on measurements of roughness, surface distress, skid resistance and deflection, pavements can be assigned a score that reflects their overall condition.  This score, sometimes called a pavement condition rating, quantifies a...
Pavement Management

Pavement Management

Pavement Management “Pavement management” refers to a systematic process of maintaining, upgrading and operating a network of pavements and involves three major components: the pavement life cycle, the costs associated with this life cycle and pavement...
Pavement Management

Water Bleeding and Pumping

Water Bleeding and Pumping Water bleeding (left two photos) occurs when water seeps out of joints or cracks or through an excessively porous HMA layer.  Pumping (right-most photo) occurs when water and fine material is ejected from underlying layers through cracks in...
Pavement Management

Transverse (Thermal) Cracking

Transverse (Thermal) Cracking Cracks perpendicular to the pavement’s centerline or laydown direction.  Usually a type of thermal cracking. A large transverse crack caused by the pavement’s contraction in cold weather.  The crack has subsequently been...
Pavement Management

Stripping

Stripping The loss of bond between aggregates and asphalt binder that typically begins at the bottom of the HMA layer and progresses upward.  When stripping begins at the surface and progresses downward it is usually called raveling. A small pavement core showing...
Pavement Management

Slippage Cracking

Slippage Cracking Crescent or half-moon shaped cracks generally having two ends pointed into the direction of traffic. Slippage crack at an intersection due to stopping.  The direction of traffic is from top to bottom.  Most likely caused by poor bonding with the...