Future Faced Nothing to WastePublished 16/11 at 14:36
Separation is currently the word on demolition sites. Never before have contractors separated waste more then at present. The equipment for efficient separation is now so much bigger than 20 years ago. Stricter regulations create a greener environment and professionals make more money on waste handling.
When the recycling of demolition waste started in the 1990s it was just for concrete and rebar. At the time it was difficult for contractors to sell recycled material even though regulations in various countries in Europe made it possible. But the situation has change for the good of the environment. Currently separations of all kinds of waste handling pays dividends for those who know how to do it and using the right equipment.
EU Waste Management Protocol
An important step is the European construction material recycling branch’s support and endorsement of the EU Waste Management Protocol. This pointed to appropriate political and other framework conditions for dealing with construction and demolition wastes as the key for a successful circular economy in construction.
Actions should now follow the findings, according to the president of the European Quality Association for Recycling Manfred Wierichs. A high recycling and utilization rate of mineral construction and demolition wastes may be only reached if a high quality of the recycled construction materials can be guaranteed. This requires explorations of contaminants to be carried out before starting demolition and planning in advance the selective demolition and clarifying the possibilities of utilization. From the viewpoint of EQAR the Austrian regulations and in particular the Austrian standard B3151 Demolition of structures, as standard demolition method, should be considered as a benchmark.
Wierichs criticizes the lack of acceptance for construction material recycling. This is even more incomprehensible as recycled construction materials are subject to harmonized European construction product standards in conformity with the EU Construction Products Regulation and has to be marked by CE. With the European test standards for environmental compatibility of aggregates about to be passed, product status for recycled construction materials may be defined on a European level.
Mineral construction and demolition wastes are valuable resources where quality recycled construction products may be produced, which are at least equal to primary construction materials in technological, ecological and economic respect. That is why the dumping prohibitions and fees taken into consideration in the WMP may be renounced, as they would only raise the costs of construction in Europe, according to Wierichs.
The WMP questions the implementation of the existing legal regulations in the individual EU member states. However, without implementation, misuse and improper dumping of mineral wastes may not be prevented, according to Wierichs. EQAR sees a clear need for action in some EU member states. Only by eliminating implementation deficit and improving simultaneously the framework conditions for construction material recycling, will it be possible to implement the utilization rate of 70% for mineral wastes throughout Europe as required by the EC Waste Framework Directive.
The proper tools
Previously there were only rebuilt rock crushers used for recycling of concrete. Now it is possible to buy the perfect machine or tool for exact waste needed to be recycled, such as concrete, steel, cardboard, wood, asphalt, paper or electric installation utilities.
Allu transforms the handling
The Finnish company Allu has demonstrated its new Allu Transformer Series including Transformer M-Series, Transformer DL Series, Transformer DH 4-17 25TS, Transformer DH 3-17 X75 and DN 3-17 25TS. The Allu Transformer Series comprise an excavator, loader or tractor mounted processing bucket, which screens, pulverizes, aerates, blends, mixes, separates, crushes, feeds and loads materials. This results in the feed material being transformed into valuable products.
They enable businesses to choose the right piece of equipment to meet their very particular requirements. All are designed to transform the way in which construction businesses are able to improve efficiency and profitability. Some applications include landscaping and agriculture, earth moving and demolition and mining processes, quarrying and aggregate.
Arjes Impaktor 250 with new features
The German manufacturer Arjes, known for recycling innovation and slow-speed two-shaft shredders, presented the new Arjes Impaktor 250 with new features at the recent show Steinexpo. The mobile crusher developed for demolition and dismantling jobs weighs 13.5t and has a length of 7.5m, width of 2.4m and a height of 2.8m.
The optional finger screen offers further classification of materials into sizes of 0 – 10mm, 10mm to 40mm and 40mm to 80mm directly after the first pass. Another new feature is the longer discharge belt, which increases height and surface of the bulk cone and requires less material removal. Another innovation is the fast changing shaft system, which allows the operator to change shafts and have the machine back up and running again in less than 2h. Arjes offers demonstrations at customer site and with customer material if requested.
the Cobra 230 compact crusher
Terex branded EvoQuip has launched the Cobra 230 impact crusher. “It is a machine that provides class leading productivity, unmatched versatility and excellent fuel efficiency,” said EvoQuip product line director Matt Dickson. “The quick set up times, simple intuitive operation and ease of transport makes this machine an ideal solution for all applications.”
The Cobra 230 has been on test with J & V Construction in Ireland. “The EvoQuip Cobra 230 has managed to surpass our expectations, handling a mix of difficult rock and heavy duty recycled concrete with ease, and turning it into products we have been able to reuse on our construction sites,” said J & V Construction director Gerd McCann.
The rapid set up time and intuitive control system on the Cobra 230 enables the operator to be crushing minutes after unloading the machine. The operator can also adjust the crusher setting using the standard hydraulic assist and without the need for any tools.
The Cobra 230 uses a direct drive system. This, together with the two independent hydraulic controlled, aprons allows the operator to optimize the material throughput and reduction whilst ensuring the best fuel efficiency. Ground level access to the engine, hydraulics, service and refuelling points ensures maintenance is easy for the operator.
There are a number of key features in the Cobra 230 that ensure optimum material flow through the crushing process. As material moves from the feeder through the impactor onto the product belt, each section becomes wider ensuring an unrestricted flow. The under crusher clearance, the short distance from the crusher discharge to the magnet and the ability to lower the product conveyor while running make it the ideal machine in all applications, the company claims. The compact footprint makes the Cobra 230 easy to transport and ideal for working in urban areas.
Hartl’s new attachment screen for
skid steer, wheel loaders and tractors
Hartl has added the HSS800 screen attachment for skid steer loaders, wheel loaders and tractors, transforming the carrier in to a mobile screening plant.
"The unique and robust shape of the sieve frame reduces the force for picking up the material, which saves the carrier device used,” said Hartl development engineer Georg Haberfellner. “But the highlight is the capacity of 600litres. This is only possible by a smart hopper and inlet area, also known from the HCS series, in this compact design.”
The new HSS800 weighs 600kg and has a screen area of 1.7m². The screen baskets are made of Hardox and the mesh widths can be selected according to customer and application requirements. It can counteract landfill costs and separate material for reuse. Significant cost savings also result from the reduction of transport, logistics and procurement costs.