ROUTED & NON-ROUTED CRACKS
Non-routed cracks don’t have an even surface for sealant (or rubber) to adhere and bond to. Without strong adhesion, the crack is more likely to open and expand. When applied, the sealant often does not reach the bottom of the crack that acts as a surface band-aid.
Routed cracks are evenly cut out that provide a smoother surface area allowing more sealant and greater strength that will expand and contract with ground shifting. Routed cracks can last for years compared to non-routed cracks which can sometimes open or sink within months.
CRACK FILLING | WHY & HOW
Shrinkage is the common cause of most cracks in asphalt pavements. Standard asphalt is approximately 94% sand and rock with 6% asphalt oil.
Asphalt takes a beating from the natural elements like sun, wind and rain. As the pavement dries and loses essential elements, it then breaks at the weakest points; usually joints along curb lines and areas of heavy traffic and weight. Block cracking at regular intervals every 30 to 90 feet is also common.
WILL CRACK SEALING SAVE YOUR PAVEMENT?
Cracks cause potholes and other pavement deterioration by allowing moisture into the sub-base. Sealing asphalt cracks and concrete joints will prolong pavement deterioration and save you money if repairs are routinely performed. Crack sealing also helps prepare the pavement for additional work such as overlays or seal coating.
WHAT ARE HOT-POUR SEALANTS?
The most advanced blend of asphalt cements, extender oils, rubbers, anti-oxidants and fillers are used in our hot-pour sealants. These products are a major advance from the old, unsuccessful hot, AC-oil and sand method used for years to fill cracks.
AMS sealants are applied at 350-400 degrees allowing it’s temporary liquid-state to reach the depths of the crack that cold-pour sealants do not. Our products include additives such as rubber and carbon black, giving the ability to withstand harsh conditions that cause pavements to crack.
THE AMS CRACK FILLING PROCESS
We strongly recommend routing all cracks that are larger than 1/4″, making a smooth, even crack to be filled. The cracks are then cleaned with heated compressed air ensuring a dust and dirt-free surface for the best adhesion of sealant.
We only use DOT spec approved crack sealant, nationwide compliant.