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” 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...
Standard Washington State Hot Mix Asphalt Types This section lists the standard HMA mixes used in Washington State both today and prior to changing from the Hveem mix design method. Most modern HMAs are listed to designate both the nominate maximum aggregate size of...
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...
Transverse (Thermal) Cracking Transverse cracks are cracks perpendicular to the pavement’s centerline or laydown direction and are usually a type of thermal cracking caused by temperature fluctuations. A large transverse crack caused by the pavement’s...
