On 23 August Green Vision Recycling was pleased to host their first business breakfast lecture with international guest speaker Dr Susan Tighe, Canadian Research Chair in Sustainable Pavement and Infrastructure Management.
Tighe confirmed what Green Vision Recycling has been practicing, “Recycled materials when used appropriately have repeatedly demonstrated performance equal to or superior to conventional materials.”
Tighe opened the discussion with Recycling: What Owners, Operators and Specifiers Need to consider, sharing her experiences of several Canadian case studies including field and laboratory assessment where recycled aggregates and Recycled Asphalt Pavement (RAP) were used. The result being that “In-situ recycled pavements have performed well, often carrying significantly more traffic over their service life than anticipated… Results of demonstration project and survey show more RAP can be successfully included in surface courses – even on heavily travelled roads.”
Held in the Owen G Glenn Building – Business School at Auckland University the venue was fitting platform where experienced industry professionals could share their experiences. Invited guests were welcomed to share breakfast and discuss some of the tough issues facing transport agencies.
Tighe emphasised how pressing the issue of decreasing availability of non-renewable virgin materials is by highlighting the Ontario context where there is only enough virgin aggregate to sustain eight years of maintenance and construction before the stocks are fully depleted. Ontario Ministry of Transport (MTO) aims not to view this solely as a constraint which needs a solution but instead to use it as an opportunity to increase performance. By incorporating recycled materials they have implemented “sustainable rehabilitation options that are safe, efficient, environmentally friendly, cost affective, and meet transportation needs without compromising future generations.”