Prismo Group — Quality Reflects

Solution

The Cost Effective Jointing and Repair System.

Thormaflex is a flexible jointing and repair system that is the long term solution for reflective cracking in asphalt and the permanent repair of concrete joints and surfaces. With a proven performance on highways and airfields. Thormaflex outlasts other conventional repair systems.

Reflective cracking is a constant problem. There are many reasons for it, but there is a long term solution – Thormaflex. Cheap repairs and cheap products are false economies when the same crack has to be repaired over and over again.

Thormaflex goes on working.

Thormaflex combines single sized stone and polymer modified bituminous binders TF90 to provide a waterproof repair flexible enough to withstand heavy traffic . Thormaflex is installed by our own crews using specialist equipment. Volumes of 200 metres a shift is a typical output. Thormaflex cools in one hour so there is minimal disruption to traffic and it forms a compacted and level repair that actually improves the condition of damaged asphalt and concrete surfaces. Thormaflex is adaptable for all types of reflective cracks both longitudinal and transverse where there is typical width of cracking up to 500mm. The normal depth of ThormaFlex is 50mm. The exact size of repair will be dependant on the actual condition of the road surface.

Applications for Thormaflex:

• Reflective cracking in asphalt surfaces
• Bay repairs in concrete
• Arris repairs at joints
• Edge repairs and debonding
• Multi-cracking/alligator cracking
• Transition joints between asphalt and mechanical joints (e.g. bridge expansion joints)
• Tramways jointing material to provide flexible joint between road surface and tram rail

Applications

• Dry and final clean using hot compressed air lance.
• Prepare hot mix of TF90 binder and single size stones and place in recess.
• Compact with vibrating plate compactor or vibrating roller.
• Allow to cool and seal with TF90 / dress with preheated stone chippings.
• Allow to cool for 1 hour prior to traffic.

Advantages

• Long term flexible repairs for reflective cracking in asphalt, failed concrete joints, mid-bay repairs, frost damage, spalling.
• Transition strips for metal to asphalt joints e.g flexible road joints for tramways, joints between mechanical bridge joints and road surfaces.
• Thormaflex cools in just one hour so it can be installed quickly with less disruption to traffic. It cures leaving a compacted, level joint on both bituminous and concrete surfacing.
• Thormaflex can be coloured to blend in with concrete roads
• Thormaflex can be dressed with calcined bauxite or other aggregates to give increased skid resistance to the running surface
• Thormaflex offers a long lasting solution based on a single size stone aggregate and bitumen binder to give maximum strength with excellent flexibility
• Thormaflex is completely waterproof, protecting the sub-base from salt and water ingress for years to come.

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