INFRA 2014
1er au 3 décembre, Palais des Congrès, Montréal
Titre anglais : A Core Strategy for Pavement Saving Utility Cuts
Accès à la présentation PowerPoint (version anglaise)
Biographie du conférencier : Marshall Pollock, Utilicor Technologies Inc.
Marshall Pollock is the President and CEO of Utilicor Technologies, the manufacturer and distributor of a field-proven, environmentally friendly, keyhole coring and pavement reinstatement system that cuts circular cores through asphalt and concrete pavement to facilitate repairs to underground infrastructure. The underground work is performed from the road surface using long handled tools. After the work is completed, the core of pavement is bonded back into the pavement with a special bonding compound as a “permanent repair” that requires no further repaving. This can reduce the cost of pavement restoration by 90%. The road can be safely reopened to traffic in 30 minutes after the repair.
Résumé de la conférence
Pavement restoration costs involved in installing and maintaining underground infrastructure can be reduced by as much as 90% by employing the keyhole coring and reinstatement process, a new and safer construction technique developed and field proven over 20 years in the gas industry.
Trenchless technology can save millions of dollars when used for gas or water-pipe renewal, but the cost of restoring hundreds of excavations needed to reconnect service laterals robs that process of much of those savings. On a typical residential street conventional pavement restoration costs can add $40-50 per foot to the overall cost of the rehabilitation project. That's $250,000 per mile of main. Employing keyhole coring and reinstatement methods to find and reconnect the service lateral avoids most of this restoration cost and the scarring of the streetscape.
Keyhole technology can also be used to install anodes and to locate underground facilities for pre-engineering activities (SUE) or to avoid potential underground conflicts when directional drilling all without significant pavement restoration costs.
Like microsurgery in the medical field, the keyhole technology process enables utility crews to access underground infrastructure and perform repair or maintenance work from the road surface through 18" or 24" diameter 'keyholes' cored through the pavement. After the work, the reinstated pavement core results in a permanent, almost invisible, perfectly matching, waterproof pavement repair that can maintain the performance life of asphalt and concrete pavements and significantly reduce traffic delays and public inconvenience.
Coring and reinstatement is an environmentally friendly process that eliminates the need for new paving materials and the disposal of old by reusing the same materials that were originally used to build the roadway to restore it after the excavation. It also reduces the carbon footprint of utility cuts and pavement restorations to one-sixth of that generated by conventional means and avoids the consumption of millions of tons of asphalt paving materials and the disposal of millions of cubic feet of asphalt spoil every year in utility cut repairs.