6ixview Asphalt Services Inc. is a thriving new asphalt repair service business based out of Markham, Ontario, Canada. They were recently tasked with routing and sealing some existing municipal asphalt cut-out road repairs in the Raymerville - Markville East neighborhood.

To perform a high-quality job, they chose to use two of their top-performing Marathon fleet machines, the CR300K asphalt crack router and the KERA180BRE hot rubber asphalt melting kettle.

This portion of a two-part case study will focus on the role of their CR300K asphalt crack router. Click to learn more about the "KERA180BRE crack-sealing kettle's role in municipal road structure preservation projects".

By way of background, smaller sections of asphalt in a roadway often become so degraded or damaged that they need to be cut out and replaced with new hot-mix asphalt in a process called "cut-out asphalt road repair". While it is economically beneficial to selectively patch a road before full replacement, this method also creates a seam where the old and new asphalt meet.

Unfortunately, this joint is not physically or chemically bonded (unless a proper amount of tack and compaction was applied during repairs) and will eventually allow water penetration to occur as it separates.

It is this moisture intrusion, along with a few freeze/thaw cycles, which causes the asphalt joints to deteriorate prematurely.

Therefore, it is necessary to seal such pavement joints with some kind of rubberized, waterproofing material.

However, before you can fill the irregular crack lines, asphalt repair contractors must first create clean, dry channels where the differently-aged asphalt meet. To widen the seams enough to allow sufficient crack sealant material to be injected / 6ixview Asphalt Services used their Marathon Equipment CR300K asphalt crack router which comes with a 12" diameter cutter head fabricated from 1" steel plate, equipped with six carbide tipped router blades strategically positioned on the router head. This configuration allowed the road repair contractors to adjust the blades in order to meet municipal government engineering specifications.

6ixview Asphalt believes that the CR300K asphalt crack router was essential for the rout & seal process used in this instance of pavement preservation in that it created a proper channel for the application of hot-melted crack-filling rubber.

Once the channel was routed and cleaned with a blower, Marathon Equipment's KERA180BRE was used to apply Maxwell Products Elastoflex 410 hot-melt crack-filling rubber at the channelized seams. This crack-sealing process created a waterproof barrier between the old and new asphalt road repair in order to extend the usable lifespan of that road section.

This pavement preservation process, which involved various rout and seal road repairs in multiple locations within the neighborhood, took approximately 4 hours from start to finish. If you would like to learn how to get more productively with an asphalt crack router, please contact our sales department.