Crack sealing

Joints or cracks in pavement, if not sealed properly, will allow water, dirt and other foreign materials to enter. As water soaks down through the unsealed cracks, increasing damage will occur through the freezing and thawing cycles.  Allowing water to penetrate beneath the joint or crack will also displace the sub-grade, which will cause further cracking and generally deteriorate the traffic surface.

The program of sealing cracks and joints with hot-poured rubberized sealing compound has been ongoing for many years, resulting in substantial savings in maintenance costs.

Uses

Hot-pour rubberized crack or joint sealing materials are used on highways, public streets, private roadways and parking lots (residential, commercial and Industrial), track and bus terminals, traffic loops and airport runways.  Without an ongoing sealing program, the otherwise durable pavement surface will have its life expectancy dramatically shortened.

Long Term Savings

Joints or cracks sealed with hot-pour, rubberized material have been proven to outperform cold applied and non-rubberized compounds.  Although the initial application of hot-pour materials may cost slightly more, this cost is returned in the added years of pavement life.  The growing demand for these products throughout North America and other parts of the world confirms large savings in maintenance.

Application Procedures

1. Crack is routed

2. Crack is filled

3. After crack routing(and power cleaning), the crack is filled with rubber which is MTO approved.

4. Finishing Touch! Powder is applied to the sealed crack

Step 1: Routing

The use of routers in cracks or joints ensures cleanliness and superior vertical side walls.  This allows for a greater bonding surface.

Step 2: Crack or joint cleaning

After the routing operation is completed, all cracks or joints should be clean, dry and free from any foreign debris.  This is achieved with portable air packs with a wind velocity of 340 km/hr.

Step 2(A): Optional cleaning method on asphalt surfaces

This method uses a hot compress air lance, which will both clean and dry the cracks or joints.  The heat of the lance will also improve the bond of the hot-poured, rubberized crack sealing material.

Step 3: Material application

The hot-poured, rubberized material will conform with the latest M.T.C. specifications.  The material will be flush with the adjacent pavement or be feathered to prevent damage by snow ploughs.  All material will be applied using pour cones specifically designed to control material flow.

Step 4: Traffic Flow

If necessary, in high traffic areas, a fine dust of talc or Portland cement will be broadcast over sealed areas to prevent tracking.