Month: May 2016

Cement producer LaFargeHolcim announces 2030 sustainability plan

  The 2030 Plan includes goals to increase amount of C&D used in its products and create a circular economy. Cement producer La Farge Holcim, Jona, Switzerland, has announced its efforts to improve the sustainability performance of its operations. The company calls this its 2030 Plan. The plan also covers partnership initiatives with the entire construction industry. The 2030 Plan targets include water and nature conservation, climate conservation, community efforts and creating a circular economy. These targets, the company says, are supportive of the United Nations’ sustainable development goals in that the company will report its progress transparently. Circular economy La Farge Holcim says it hopes to transform waste into fuel and raw materials for all of its production processes. This includes using 80 million tons of resources made from waste in its operations per year and increasing the volume of recycled aggregates from construction and demolition (C&D) debris and reclaimed asphalt paving by four times. The company says it plans to use waste as a resource by: deploying its waste treatment services over all continents, building on its long experience and applying strict environmental and safety standards; deploying coprocessing installations for waste-derived fuels and raw materials in cement operations; these can include shredding installations for solid waste, handling, dosing and feeding systems, physical and chemical pretreatment processes; deploying biomass production initiatives and initiating long term partnerships with local...

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WILDCOAST Launches Waste Tire Recycling Pilot Project in Tijuana

News from Tijuana, Mexico: WILDCOAST has launched a Waste Tire Recycling Pilot Project in Tijuana on 12. May with project partners Secretary of Environmental Protection for the State of Baja California (SPA), GEN (Promotora Ambiental S.A. de CV) and supported by a grant from CalRecycle. This innovative, collaborative project will be carried out from May 2016-April 2017 in partnership with the State Governments of Baja California and California with WILDCOAST as the project coordinator. The goal of the project is to collect and recycle approximately 50,000 waste tires in the Tijuana-San Diego border region from May 2016 until April 2017. During rain events, these waste tires flow into the Tijuana River through tributaries along the border, cross the international boundary, and eventually impact habitat and recreational resources the Tijuana River Valley and adjacent coastal ecosystems. Additionally, the waste tires create habitat for the Aedes mosquito which can carry Zika virus, Yellow Fever and Dengue. Source: The...

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Synthetic Turf Fields: All The Fears vs. All The Facts

All the public concerns about the safety of crumb rubber infill on synthetic turf fields. Synthetic turf fields are becoming more common, in part because they tend to have greater durability and lower maintenance costs compared with grass. For example, in North America, about 98 percent of synthetic turf fields use granulated recycled tire rubber, or crumb rubber, as infill. The granules fill in the space between synthetic blades of grass to provide cushioning, aid drainage, and help prevent injuries when athletes run, slide, or take a tumble. Yet even as these fields become more common, some community members have raised questions about whether crumb rubber is safe. On one side of the conflict are more than 70 studies and literature reviews from state health departments, universities, and other independent entities in the United States and in Europe. None of the studies say crumb rubber is a public health or environmental concern. On the other side are environmental groups and residents who worry that various chemicals in tire rubber could cause cancer or other health problems, and they are asking school boards, cities, and states to ban crumb rubber infill. Tire processors and synthetic turf vendors are concerned that this fear has trumped the facts and maligned a product with real environmental benefits. What the Studies Say Over the years, numerous organizations have looked into crumb rubber’s potential health...

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Liberty Official: Rubber-modified asphalt is a proven commodity!

According to a speaker at the 32nd Clemson University Global Tire Industry Conference, barriers still exist to the expanded use of rubber-modified asphalt, despite the proven benefits of the technology. “One of the best ways to deal with scrap tires is to put them back into the road,” said Richard Gust, president, national accounts for Liberty Tire Recycling. According to Gust, the idea of modifying asphalt with scrap rubber was advanced in Europe as early as 1938, and in 1949 an asphalt-rubber mix was used on an experimental stretch of road in Akron. He has said that the commercial application of rubber-modified asphalt began in Arizona in the mid-1960s, and since then the technology has more than proven itself. According to Gust, rubber-modified asphalt is safer and more durable than conventional asphalt, reduces both noise and costs, and is environmentally responsible and sustainable. He also has said that nevertheless, many state highway departments are still leery of rubberized asphalt, and the reasons are somewhat complicated. According to him in the 1960s and for years afterward rubberized asphalt technology was covered by a patent, which effectively prevented its expansion from Arizona. But even after the patents lapsed, major problems have arisen. Provision backfires The biggest, according to Gust, was the provision in the Intermodal Surface Transportation Efficiency Act passed by Congress in 1991. That provision required state transportation agencies to...

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Scientists have achieved room-temp tire recycling

Researchers at Durham University in the United Kingdom have developed an innovative approach to break down rubber in materials at room temperature. The chemical process uses catalytic disassembly, thus eliminating the energy-intensive methods of the currently-used tire recycling methods.In a paper published in the journal Green Chemistry, the Durham researchers have explained the whole process and how it could be used to recycle vehicle tires, latex gloves, and other polymer-based items, which are manufactured in the millions of tons every year. The long-chain hydrocarbon molecules and unsaturated carbons in these rubbery materials are traditionally very difficult to recycle or reprocess easily, which holds true especially for vehicle tires. The traditional method for reprocessing rubber is to drastically change the temperature of the rubber compounds to break them down, either by heating them for milling, or freezing them to fracture them. These are energy-intense and leave a crumb product which is then mixed with new elastomers to produce new material, often with a loss in hardness or malleability. These losses mean that most recycled rubbers are not re-used for the purpose they were originally formed, but are instead recycled into other products. According to the Durham researchers, their chemical process may be used to allow the materials to be recycled back into their original use – so a recycled tire could be made into a new tire. Their cross metathesis...

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