Continuous expansion, high quality standards as well as short delivery deadlines made such a step necessary for the manufacturer of mobile crushing and screening machinery, Kormann Rockster Recycler GmbH from Ennsdorf. The acquisition of a 10,000 m² property in Neumarkt im Mühlkreis (Upper Austria) promises to provide a strong and needed force in a continuous growth and market demand.
Using recycled aggregates for roadbuilding is the way of the future – time for many to catch up
On the path to building sustainable roads
Municipalities are responsible for the care and maintenance of vast amounts of roadway, from alleys to highways. When those roads are repaired or replaced, there's the potential to generate a significant amount of aggregate material - concrete and asphalt removed from the old surface that must be dealt with.
Today's roadbuilding contractors are using this recovered material and recycling it more than ever before. However, research is showing that some municipalities in Ontario are far better than others when it comes to using recycled aggregate in their roads - and some are far behind.
A study conducted on behalf of the Toronto and Area Road Builders Association (TARBA) has shown that Ontario municipalities are all over the map with respect to how much recycled material they use for road construction, with some almost entirely eschewing recycled aggregate - a greener alternative compared to virgin material - for their projects.
"There's not a huge commitment to recycling aggregate; in fact, there's a reticence to use the product," explained Rob Bradford, executive director of TARBA. "I think it stems from a fear of trying something new, thinking that something might happen - sticking with virgin aggregate has less potential for risk."
According to a study by a researcher from the University of Western Ontario, the allowable use of recycled aggregate across the region ranges from significant amounts in some large areas like Toronto, down to nearly none in nearby Mississauga. Instead, according to Bradford, millions of tonnes of material is either sent to the landfill or into stockpiles. At the same time, those low rates of use mean that new aggregate must be trucked significant distances, burning fuel and generating greenhouse gases, while used aggregate ends up in the waste stream.
Recycled aggregate means more sustainable infrastructure, overall, and Ontario municipalities should be doing a much better job - a much greener job - of recycling asphalt and concrete, Bradford noted. "They need to be a part of the solution, rather than part of the problem."
Focus on construction practices
The UWO study looked at construction practices in five regional municipalities and 15 single or lower-tier municipalities across Ontario, conducting a survey regarding approved uses of recycled aggregate for use in a variety of situations. Results of the survey showed a broad range of standards in both road construction and subdivision work.
For example, the collected responses showed that some 50 percent of surveyed municipalities do not allow the use of recycled concrete and asphalt as 55 mm aggregate for granular base and subbase for pavement. 40 percent allow partial use and 10 percent allow for full use. The municipalities are even more restrictive when it comes to 19 mm aggregate for granular pavement, with 55 percent not allowing recycled material, 35 percent okay with partial use and 10 percent allowing full use.Ready-mix concrete is the most restrictive use for these municipalities, with 80 percent not allowing recycled aggregate use and 20 percent allowing partial use.
On the other side, 50 percent of municipalities are okay with recycled aggregate being used for engineered fill, and 90 percent allow partial or full use for construction access roads, bicycle paths and similar construction.
Among individual cities, Toronto - the highest scoring municipality in the survey - allows recycled material for use in everything but engineered fill, stabilization of soft subgrades, Portland cement ready-mix, and in concrete for sidewalks, curbs and other uses within subdivisions. Some other uses are restricted, but for the most part full use is allowed.
"I'm really pleased to see that," Bradford said. "Sometimes there's an intent to do what's right, but it doesn't get down to the foot soldiers. If we have an issue in the city of Toronto, where virgin aggregate has been called for in a tender that should have some recycled material, we'll give them a call, and they address it."On the opposite end of the spectrum is Mississauga, which allows full use of recycled aggregate only for construction access roads, bicycle paths and similar features. No recycled product is allowed for any other road construction projects.
Perception and policy
Bradford suggested that much of the disapproval of recycled materials in municipal policy may come from lingering concerns about quality - something that has improved greatly with the growth of the aggregates recycling industry.
"You have to ensure the quality of recycled aggregate - it has to be an engineered quality, it has to be properly processed and tested. Like any material, going back 10 or 15 years there are probably a couple of things that have stuck in peoples' minds from when it was used in the infancy of the industry where it didn't work out because quality control wasn't what it should have been," Bradford said. "If you're a consultant working for a municipality, or you're an engineer in charge of the roads department, that kind of decision is a risk - so, you play it safe and just specify virgin aggregate."
This trend of specifying new material creates many issues for contractors who have to manage the aggregate removed from jobsites, Bradford noted.
"The owner just writes off ownership in the contract, so the contractor has to find a place to get rid of anything that comes off that project. Now, if they produce recycled aggregate themselves, they will take it to their yard and pile it up. If they don't, they have to find someone who does produce it. . . or dispose of it in the landfill," he said."The point we're reaching now is. . . there's so much of the stuff, they will have to start charging to take it in, and second they're going to have to turn people away."
Moving forwardTARBA is encouraging municipalities to find ways of using more recycled asphalt in their construction work. One example Bradford pointed to is the Ontario Ministry of Transportation, which currently uses 20 percent recycled materials in its highway construction.
"They've been very forthcoming about their commitment to reusing recycled aggregate. . . they're using tens of millions of tons a year. If you can put this material under highways that carry the amount of traffic that ours carry, then surely there's an argument for using it under a municipal street," Bradford said.
Only about seven percent of the aggregates used in Ontario currently come from recycled sources, as opposed to European countries which use up to 20 percent recycled product, Bradford noted. That's a goal he said TARBA would like to see municipalities aim for.
"We are encouraging municipalities to use the Ministry of Transportation model. If municipalities have the same attitude and the same practices as the MTO, we as a province would be recycling close to the levels that we should be, and which are supportable from a technical standpoint," Bradford said.
"There are Ontario provincial standards that look into the science behind this - what percentage of recycled aggregate you can use as a base course, or as a surface course, or on a bicycle trail. This has all been well figured out. We want municipalities to recycle the maximum allowable under the provincial specifications." RPN
This article was originally published in the January/February 2019 edition of Recycling Product News, Volume 27, Number 1.
More from Aggregates & Quarries
As the general manager of aggregate equipment manufacturer McLanahan, Mark Krause has seen a lot of change in the industry as a whole. Advances in technology are making significant inroads into aggregates, and that, combined with desire for more mobility from customers and a drive to draw new, younger professionals to the industry is what Krause sees shaping the market in coming years.
For Wayne Ylitalo, relationships with suppliers and customers is everything. That is how he built his business. Following that core principle has led him to a successful lifelong career in the aggregate industry around Toronto and across Ontario. It's also why he's been using VEI loader scales from RMT Equipment for 20 years. "When you buy something good, you have to tell other people how good it is," he says.
Metso has signed an agreement to acquire McCloskey International, a Canadian mobile crushing and screening equipment manufacturer, to expand Metso's offering in the aggregates industry globally and to strengthen the customer reach especially to general contractor customers.
Haver & Boecker Niagara offers rugged primary crushing plants in a wide variety of configurations for pre-crushing, secondary and tertiary crushing in the mining and aggregates industries. From design to installation, the manufacturer uses its extensive industry experience and knowledge to provide turnkey systems engineered and built to individual specifications. Haver & Boecker Niagara will work with any crusher and peripheral component manufacturers to ensure customers receive the best plant matched to their requirements.
Metso has reached the significant milestone of 10,000 Nordberg® HP cone crushers sold globally. The most popular modern cone crusher in the world, according to Metso, the HP Series celebrates its 30th anniversary this year. The 10,000th HP cone crusher unit was handed over to the French aggregates and asphalt producer and urban infrastructure development company Eurovia in a ceremony held this week at Metso's Mâcon facility in France.
Cedarapids, a Terex Minerals Processing Systems (MPS) brand, offers a new range of cone crushers. The new TG Series will be a Bronze Bushing Spider Bearing Cone. This new series of cones will complement the current Cedarapids MVPX Series (Screw Type Cone) and the Cedarapids TC Series (Floating Bowl Cone). Terex MPS will now offer a solution for every cone crushing application requirement while meeting the application needs of customers with the best possible product quality and productivity.
Lindsey Aggregates, based in New York state, is to open its doors this June to showcase its new multi-million-dollar integrated sand washing system, designed and installed by full-service EPC company CDE.
Impact crushers have broad appeal across various sectors and for good reasons. Our panel of experts provides insight as to why this is, plus information on the dynamic market for impact crushers in Canada, their applications and advantages, customization and options, as well as what to consider when buying an impact crusher.
Following Terex Corporation's release of its first quarter 2019 results, Terex Materials Processing (MP) is pleased to share these, along with its segment-specific results.
Modern crushing plants have become more and more complex as their requirements rise. At the same time, the technology must be safe and as simple as possible to operate – and without lengthy instruction and familiarization periods. This is the challenge which faced Kleemann. At bauma 2019 Kleemann showcased innovative solutions for the safe and simple operation of crushing and screening plants.
Haver & Boecker has established its global brand Haver & Boecker Niagara to combine the engineering expertise and product portfolios of its three mineral processing locations in Brazil, Canada and Germany. In the past, the three locations acted individually for their respective regions and territories. Customers around the world will benefit from shared innovative technology, more in-depth consultations, greater parts availability and better delivery times.
At Bauma 2019, Rockster not only presented its diverse range of products, but also immersed the visitors in new fields of interest. Wolfgang Kormann, CEO of Rockster Recycler from Austria, is convinced that this trade fair really deserves to be called "The World's Leading Trade Fair for Construction Machinery".
Lake Erie Portable Screeners introduces the heavy-duty Pitbull PB678 Static Grizzly. The compact screen is a smaller version of the popular PB148 for added jobsite versatility and pairs well with the Pitbull 2300 screening plant, making it an economical option for operations looking for a compact solution to sort oversize material on a reduced scale. The PB678 Static Grizzly includes features for easy bar removal or adjustments as well as transportability. It is ideal for a wide range of industries, including aggregates, mining, scrap, excavation, demolition, forestry and landscaping.
Washing equipment specialist McCloskey Washing Systems (MWS), along with their UK dealer MaxInnovate Ltd, held its first multi-spread demonstration event, at Monk Plant Hire (MPH) in Hockering, Norwich, UK on Wednesday 20th and Thursday 21st March, highlighting the power of the washing equipment working together. The demonstrations were an integral part of events tailored to familiarize both new and established dealers and customers with the versatility and productivity of MWS latest products.
Aggregates equipment OEM Metso began a partnership with Volvo Penta in 2016 following increased customer demand for fuel-efficient engines. Now, it is set to install Volvo Penta's Stage V solutions as an option on its mobile crushing machines.
Terex Finlay showcased the latest addition to their 8-Series line up of heavy duty screeners, the ‘883+ triple shaft' at Bauma 2019. This new model has been developed specifically to work in a variety of dry and difficult sticky applications including quarry, mining, sand and gravel, construction and demolition debris and recycling applications.
"Hauling is one of the most cost-intensive components of a typical mining or quarrying operation. In addition to fuel and labor, there's plenty of maintenance involved too. To ensure cost efficiency, a haul truck should carry as much payload as possible on every round. At Metso, we set out to tackle this challenge and designed a truck body that requires minimal maintenance while maximizing payload. The result is a lower operating cost per hauled ton," says Lars Skoog, Vice President, Mining Wear Lining & Screening, Metso.
Keestrack prides itself in consistently developing its worldwide manufacturing capacities. The company, which at bauma celebrated its 10,000th production machine since the legendary "4518" was introduced in 1996, is also marking the completion of its new 8740-square-metre assembly complex, the second extension phase of its main factory in Šternberk, Czech Republic. More milestones and new extension projects will be set and started in 2019, including the opening of Keestrack's Indian assembly in Neemrana and new production capacities in Ponzano Veneto, Italy.
Powerscreen showcased its revolutionary OMNI by Terex technology to help improve jobsite safety and efficiency in operating Powerscreen equipment at the recent bauma 2019.
Metso is introducing the latest addition to the versatile MX Multi-Action cone crusher series at Bauma 2019. The MX3 enables improved crusher productivity and lower operating costs with a design optimized especially for mid-sized quarrying.
The second generation J-1160 jaw crusher has been designed with the customer and operator in mind. In comparison to its predecessor the plant has a number of improvements such as increased under jaw clearance and all round preventative maintenance and serviceability access.
CDE has launched the Combo™ in a move set to revolutionize the wet processing industry.
Terex Minerals Processing Systems (MPS) has launched a new series of Simplicity Standard Incline (SI) screens designed for heavy duty, medium and fine screening applications and come with many features which make the screens more versatile and highly reliable in the market.
Aggregates operators are always looking for ways to improve their efficiency and make more informed decisions in their planning processes. Many are adopting emerging technology as an added way to develop their operations, and the advent of drones is playing a large part.
Volvo Construction Equipment's Electric Site project aims to test the world's first "emission-free" quarry by electrifying each transport stage, from excavation to primary crushing, and transport to secondary crushing. It uses both electric and autonomous Volvo CE prototype machines, plus new machine and fleet control systems and an entirely integrated real-time site management system. Together, these form a complete Electric Site solution. Volvo CE and its customer Skanska tested the viability of the Electric Site research project for 10 weeks at a Skanska's Vikan Kross quarry near Gothenburg, Sweden. Heavy Equipment Guide staff were on site to see the operation and learn about the results.
At this year's bauma, Kleemann presents a comprehensive cross-section of its innovative product portfolio with a total of seven mobile crushing and screening plants. High-performance machines and environmentally-compatible solutions for natural stone and recycling applications will be presented.
It is no surprise that there are plenty of variables that come into play when it comes to optimizing an aggregates operation. One area in particular where telematics and other technologies can improve efficiency and profitability is tracking and managing loadout activities.
Keestrack offers today the most versatile range of hybrid and plug-in solutions in mobile processing technology for quarrying and recycling applications. This applies to the complete product range, from screening plants and stockpile conveyors to mobile track-mounted crushing solutions of all relevant technologies and for all production capacities.
Terex Washing Systems (TWS) will present live washing demos of their game-changing AggWash 60 during bauma 2019. This showcase, in conjunction with their German distributors Kolsch and Christophel, is being hosted at Mittermeier (Kolsch customer site), located next to Hall FN 1024 / 1, April 8-14, 2019.
At the start of 2019, Kleemann was awarded two international design prizes: the iF DESIGN AWARD and the GOOD DESIGN Award for the jaw crusher MOBICAT MC 120 Z PRO and the screening plants of the EVO line. Innovative details for safe operation and simple handling impressed the jury members.
Wet processing equipment manufacturer CDE is launching an innovative new range of technology solutions to enable customers to increase the efficiency of their plant, automate processes, and lower their operating costs.
Since its founding in 2004, ROCKSTER has developed two patented systems for mobile crushers. At bauma 2019, the mobile impact crusher R1100DS will be displayed in the open area in front of the B2 Hall / Gate 7 (Booth No. 12B/2). The machine combines both innovative systems (DUPLEX and double-functional return / stockpile belt) and as of 2019, it will be equipped with a CAT C9.3B EUR5 engine. This will offer customers the latest state-of-the-art technology.
The Telsmith 3244 Portable Plant provides the portable crushing producer consistent, reliable production, low mobilization costs, and the flexibility in a number of processing applications such as producing quarried stone, sand and gravel, and recycling. The 3244 primary jaw plant can be used alone or configured with other mobile plants to create a complete processing system in aggregates processing.
McCloskey to debut latest crushers, screens, stackers and washing plants on the world stage at bauma 2019
Screening and crushing industry manufacturer McCloskey International will demonstrate its continued growth with an exciting roster of new products and a significant presence at bauma 2019 in Munich, Germany, from April 8-14.