SA councils take part in crumb rubber trial

At least six South Australian councils have agreed to take part in a trial using crumb rubber derived from end-of-life truck tyres.

With funding from Tyre Stewardship Australia (TSA), a special gap graded asphalt modified with crumb rubber will replace regular asphalt on a number of roads.

The trial involves TSA, Topcoat Asphalt and the cities of Mitcham, Port Adelaide Enfield, Campbelltown, West Torrens, Onkaparinga and Salisbury. The Department of Planning, Transport and Infrastructure will provide technical advice.

TSA CEO Lina Goodman said the trial is the largest of its type conducted in Australia.

“These councils are playing a vital role in finding modern and environmentally sound solutions to a problematic waste problem,” Ms Goodman said.

“South Australian councils are leading the way by embracing this landmark opportunity in the development of the circular economy in Australia.”

According to a TSA statement, the equivalent of 29 million passenger tyres are up-cycled, recycled or processed locally for productive uses such as roads, playgrounds, polymers and tyre-derived fuels each year.

“But, over 27 million passenger tyres in Australia are not being recycled. These often end up in landfill, stockpiles or are exported overseas,” the statement reads.

The trial will use the equivalent of roughly 3400 passenger vehicle tyres or more than 20,000 kilograms of crumb rubber. Each of the six sites will use what equates to 566 passenger tyres.

Topcoat Asphalt will mix the crumb rubber into a special high-grade mix, which according to the statement, has a high rubber ratio.

“A similar trial was conducted earlier this year on a small section of road in the City of Mitcham which is so far showing positive results,” the statement reads.

“However, this larger trial will use a higher proportion of crumb rubber.”

Each trial site will consist of two adjacent road sections. One 200 metre section will contain the high- grade mix and the other will be normal asphalt.

The roads will be tested for resistance to rutting, susceptibility to cracking and moisture damage over a minimum of two years.

TopCoat Asphalt Technical Manager Rod McArthur said testing in other countries shows crumb rubber from old tyres works well, or even outperforms, regular asphalt.

“This trial is about proving that the product works just as well here in South Australia, using the tried and tested Californian technology, without having to reinvent the wheel,” Mr McArthur said.

City of Mitcham Principal Engineer Russel King said he believes more councils and other levels of government should be using crumb rubber technology in their roads.

“We have shown through our trial that it improves the performance of roads due to less cracking and it increases the life span,” Mr King said.

Ms Goodman said using crumb rubber is a win-win for the rate payer and the environment.

“It’s time we saw old tyres as a valuable product that can be used to make roads last longer all around Australia,” Ms Goodman said.

“The recent COAG announcement banning the export of old tyres is another reason governments should embrace this technology.”

Related stories:

TyreStock win sustainability awards

Tyre Stewardship Australia (TSA) has congratulated Queensland online tyre retailer, TyreStock, for winning a highly respected business award.

TyreStock was announced the winner of the Brisbane Lord Mayor’s Yurika Environmental Sustainability in Business Award at a ceremony in Brisbane on Friday night.

TSA Chief Executive Officer Lina Goodman said TSA was thrilled to see such an innovative business win this award.

“TyreStock is committed to ensuring waste tyres don’t end up in landfill or stockpiled and the award shows that this message is also important to the community and leaders,” Ms Goodman said.

TyreStock promises its customers that their old tyres will end up at Australian recycling plants and it has a tracking system to ensure this. It is also committed to donating some of its profits to charities helping children and families in developing countries.

The small start-up managed to beat some established organisations like Brisbane Airport Corporation and the University of Queensland.

TyreStock CEO William Amiot said the company was pleasantly surprised to win the award.

“It’s overwhelming that Brisbane City Council recognises our mission and embraces the vision we have for our industry,” Mr Amiot said.

TyreStock is influencing how Australia’s waste tyres are dealt with through its participation in the Tyre Stewardship Scheme.

TSA’s voluntary scheme has to date supported the creation of more markets for tyre-derived products like equine tracks, roads and permeable paving.

It has thus far committed five million dollars to the development of sustainable end markets for tyre-derived products within Australia.

Pictured: Brisbane City Lord Mayor Adrian Schrinner, presenting TyreStock Co-Founders William Amiot and Elodie Desporte-Duperry with their Yurika Environmental Sustainability in Business Award.

TSA and ARRB trial crumb rubber asphalt

A crumb rubber asphalt trial will soon begin in Melbourne, with funding from Tyre Stewardship Australia (TSA) and the Australian Road Research Board (ARRB).

According to TSA CEO Lina Goodman, while crumb rubber is routinely used in rural road surfacing in Victoria, more testing is needed on highly trafficked roads.

“The aim of this project is to increase the opportunity to use crumb rubber in metropolitan roads,” Ms Goodman said.

“This trial is a landmark opportunity in the development of the circular economy in Australia.”

ARRB will trial a range of asphalt mixes and monitor performance over time.

ARRB Senior Professional Leader Melissa Lyons said the trial is a first of its kind in regard to scale and number of testing mixes.

“ARRB is proud to be a supporting partner of this project, which is about finding sustainable solutions to Australia’s tyre problem,” Ms Lyons said.

The crumb rubber asphalt will be laid on a 1.5 kilometre southbound East Boundary Road carriageway, between Centre Road and South Road in Bentleigh East.

Lab and field testing will be conducted at regular intervals, with a final report due by mid 2022.

Related stories:

TSA partners with reporting app to monitor stockpiles

Tyre Stewardship Australia has partnered with Snap Send Solve to enable simple public reporting of local tyre stockpiles or dumping hotspots.

Snap Send Solve is a digital platform that facilitates the identification of local issues such as illegal waste dumping and broken infrastructure.

Snap Send Solve CEO Danny Gorog said users capture photos on their smartphones, and the app notifies relevant authorities.

“Now users can easily report not just rubbish, but more specifically dumped or stockpiled waste tyres,” Mr Gorog said.

“The reports will be provided to the relevant council for resolution, as well as Tyre Stewardship Australia, who will monitor hotspots and communicate directly with tyre retailers, state and local authorities to stamp out poor behaviour.”

Tyre Stewardship Australia CEO Lina Goodman said the free smartphone app will help monitor where waste tyres are being dumped or stockpiled.

“If you see some dumped waste tyres or what you suspect is a stockpile, simply snap a photo and send a report using the app,” Ms Goodman said.

“The appropriate authority can then be alerted, and the problem can be solved.”

Ms Goodman said 10 per cent of the almost 56 million tyres discarded annually in Australia are domestically recycled.

“The rest are either exported overseas or disposed to landfill, stockpiled and illegally dumped,” Ms Goodman said.

“Understanding how we can work together to ‘stop the stockpile’ that is generated by illegal operators is the first step in finding sustainable end outcomes for a greater number of used tyres in Australia.”

According to Ms Goodman, there are currently up to nine major known stockpiles around the country, which cost an estimated $5 million each to clean up.

City of Port Phillip Victoria Mayor Dick Gross said he welcomed the addition of tyres as a new category on the app.

“This means we can gain a better understanding of where the hot spots are and thus deal with the dumped or stockpiled tyres faster,” Mr Gross said.

Related stories:

City of Mitcham installs recycled tyre pavement

Paving material made with recycled tyres has been installed by the City of Mitcham, as part of a field trial in sustainable urban drainage design.

The permeable paving, created by the University of Melbourne with funding from Tyre Stewardship Australia, has been laid at St Marys Park in Adelaide.

The material is made from 50 per cent used tyres and is designed to assist water drainage through surface resistance.

Tyre Stewardship Australia CEO Lina Goodman said the City of Mitcham is one of many councils interested in investigating the performance of waste tyre permeable pavement.

“This trial will utilise four tonnes of tyre-derived aggregates, the equivalent to diverting 500 passenger tyres from the waste stream,” Ms Goodman said.

“This project is envisaged to be the first of many, and has been undertaken to demonstrate the effectiveness of the product.”

Ms Goodman said wide spread implementation of the material could see 300,000 tyres used in local government infrastructure per year.

“The use of end-of-life tyres as an aggregate blend for permeable pavement has various applications such as pedestrian walks, bike paths, car parks and low volume roads,” Ms Goodman said.

“TSA is eager to see more trials take place to showcase the products full potential in the urban environment.”

City of Mitcham Mayor Heather Holmes-Ross said the trial is a first for Australia, and will involve testing the permeable pavement under various traffic loads.

“We are very excited to be involved in this innovative trial. This paving product provides many benefits to the environment, including harvesting water to help water nearby trees and gardens,” Dr Holmes-Ross said.

“Not only does it sustain urban vegetation, it can help to increase groundwater recharge, reduce surface runoff, decrease the risk of flash-flooding and help with the treatment of storm water.”

Dr Holmes-Ross said equipment had been installed below the surface of the parking bays to monitor the performance of the pavement, as well as record the surface temperature of the different pavement colours.

“The pavement design has obvious benefits for water sustainable urban design, which will be evaluated during the trial,” Dr Holmes-Ross said.

The trial will also monitor the quality of water passing through the pavement structure, and evaluate its efficiency in reducing contamination of resulting waterways.

Related stories:

Six new local governments join Tyre Stewardship

A further six local government authorities have received Tyre Stewardship Australia (TSA) accreditation, after using tyre-derived raw materials in infrastructure projects.

The six new local governments are Burdekin Shire Council (QLD), Campbelltown City Council (SA), Launceston Shire Council (TAS), Paroo Shire Council (QLD), Prospect City Council (SA) and Upper Hunter Shire (NSW).

TSA CEO Lina Goodman said having local authorities on board was a vital step towards ensuring the sustainable management of old tyres.

Ms Goodman also noted having more councils on board would help drive the commercial viability of developing new and improved tyre-derived products.

“Along with transport companies, local governments deploy significant fleets of vehicles,” Ms Goodman said.

“Ensuring that the tyre needs of those fleets are catered for only by entities committed to responsible end-of-life tyre management can make a significant impact on sustainable outcomes for the over 56 million end-of-life tyres Australia generates every year.”

According to Ms Goodman, all newly TSA accredited councils will be closely watching crumbed-rubber asphalt trials in South Australia’s City of Mitcham, with a view off specifying the use of similar surfaces for their future road maintenance and enhancement projects.

“Crumbed-rubber asphalt has been in extensive use overseas, in climatic conditions similar to Australia, with long term use in California, Arizona and South Africa delivering excellent road performance results and highly desirable sustainability outcomes,” Ms Goodman said.

“The local road trial will be looking at a range of performance factors, such as cracking, rutting, moisture retention and general durability.”

Ms Goodman said all local authorities have the opportunity to use recycled tyre-derived materials in urban infrastructure, through both well-established applications and rapidly emerging new products.

“Existing uses of tyre derived material, for applications such as providing soft fall surfaces on playgrounds, are being added to by innovations such as erosion protection wall systems in waterways, noise barriers along roads and permeable pavements for carparks, footpaths and walking tracks,” Ms Goodman said.

“A major focus for the development of new materials is the continual improvement and tailoring of crumbed-rubber asphalt used in roads.”

Related stories:

Tyre Stewardship invests in crumb rubber concrete

The University of South Australia, with funding from Tyre Stewardship Australia, is working to develop and test reinforced crumbed rubber concrete (CRC), for use in the residential construction industry.

CRC is made by replacing sand with crumb rubber, from end-of-life tyres, in concrete mixes.

Tyre Stewardship CEO Lina Goodman said the University of South Australia testing has assessed both the material itself and its structural properties, with encouraging results.

“Nearly 40 per cent of the annual total of approximately 9.6 million cubic metres of Australian pre-mixed concrete is used for residential construction,” Ms Goodman said.

“That volume presents a significant opportunity to consume very substantial quantities of recycled rubber, and could account for a large proportion of the 56 million end-of-life tyres Australia generates each year.”

According to Ms Goodman, CRC showed no difference in performance when compared with conventional concrete during a full-scale trial of residential slabs.

“There were no issues related to the mixing and delivery of CRC by a commercial ready-mix supplier, and the residential slab contractors working with the new product reported easy application and no difference when finishing the concrete surface,” Ms Goodman said.

“In addition, as with conventional concrete, no visual deterioration was observed on the rubber concrete slab surface after three months. All the initial results indicate that CRC in residential slabs is a promising and potentially viable alternative to conventional concrete.”

Ms Goodman said the commercial potential for CRC is considerable, with positive properties including increased toughness and impact resistance, reduced tendency for cracking and shrinkage and better acoustic and thermal insulation.

“Given the ongoing population growth that is sure to sustain a growing domestic construction industry, the work we are supporting on the development and testing of CRC is one of the most promising areas of market development,” Ms Goodman said.

“Ultimately, the aim is to find valuable uses for tyre-derived material that generate a strong domestic market, create a value for the resource and, in that way, deliver a sustainable circular economy outcome.”

Related stories:

Tyre Stewardship Australia members achieve circular outcomes

Eight members of Tyre Stewardship Australia are taking their role as tyre manufacturers a step further by working towards a circular economy future.

Read moreTyre Stewardship Australia members achieve circular outcomes

Tyre export markets audited

According to Tyre Stewardship Australia (TSA), used tyres are being sent overseas with little regard for environmentally sound recycling processes.

TSA Chief Executive Officer Lina Goodman said a recent audit into where some Australian recyclers are sending tyres revealed multiple red flags.

These include selling to businesses with poor health and safety practices, poor storage conditions and companies involved in environmentally harmful burning.

“Whilst it is inevitable that some used tyres will be sold overseas, we want Australian tyre recyclers and collectors to be more vigilant and responsible about where they send their product.

“Although TSA does not have the authority to regulate these markets, we do want to help our participants make informed choices – choices that are safer for the environment and society,” Ms Goodman said.

TSA have engaged multinational assurance company Intertek to assist with the verification of downstream end-of-life tyre processes and review its product stewardship scheme with the aim of greater transparency.

The guiding principal of the product stewardship scheme is that all members must use accredited TSA collectors and recyclers, and if they don’t comply membership can be revoked.

Intertek General Manager Australasia Benjamin Rieck said the company is committed to working with TSA to ensure responsible and environmentally sound outcomes over a range of areas including distribution, environmental, health and safety, modern slavery and broader social responsibility and compliance.

TSA has to date committed $4 million to the development of sustainable end markets for tyre-derived products within Australia.

“We are working hard to support these emerging markets but in the meantime, we need to do more to help our participants find and use reputable overseas recyclers,” Ms Goodman said.

Related Stories:

X