They also avoid a share of the cost of landfill

The site is identified by the N10, exchanger, a bridge and two lanes SNCF, all overlooked by a crude water tower of stripping. Meanwhile, extends a network rail France wasteland where sleep mounds of tired ties, recumbent poles, cars sometimes squatted. It is in this little corner of paradise of 1 hectare to trap (Yvelines), that Yprema has established a centre for recycling of inert waste almost twenty years. The SMEs found its customers, but some local officials would like to see it moved further. As all activities related to waste, recycling of the concrete punishment to entice residents and their elected representatives. This activity, that still values the waste more heavily produced by humans, has however meaning that located in urban areas, main place of production and consumption. Yprema the slowly developing over the past two decades, to achieve 18 million euros of turnover on a dozen of sites in France, including 6 for Ile-de-France.

The demolition of buildings or public works structures there send connected of trucks loaded with blocks of concrete, pavement pieces, land of excavation. The same generally go with recycled materials on-site, in the direction of public works exclusively book building. The process is very simple. Concrete or pavement are strained and separately reduced aggregate in large Crusher. A powerful magnet then sucks the ferraillages of arms of concrete. Last screening separates gravels, graves and pebbles. Each has its jobs: dike, soles of pavement, fill in the trenches of pipeline for example. The use of aggregate recycled in fresh concrete construction is prohibited in France, unlike other countries such as the Germany. Dimitri Jourdan, CEO of Yprema, saw no need to extend the application of its products to the construction, because currently the offer is cover the demand for public works.

Yprema and its competitors have embarked on concrete recycled with economic arguments about 30 sites in Ile-de-France region whose density promotes recycling. They offer wrecking an alternative of proximity to the landfill to distant landfills, which limits the route of the carriers, but also the capital of deconstruction gear. They also avoid a share of the cost of landfill. On the other hand, recycling requires that they correctly sort materials upstream. An approach that Yprema encourages less charging very pure waste. "Placements wrecking have understood their interest to deconstruct rather than demolish", says Dimitri Jourdan. According to the French Federation of the building, this screening to decrease costs by 40. The argument of proximity applies to customers of recycled materials, Ile-de-France with more that careers far from virgin materials. In some cases, the price of the natural transport exceeds that of the aggregates themselves.

In recent years, recyclers have increased their share of market with the eco-strategic argument. Some local communities have now favoured this supply in their sites, such as the General Council of the Marne since 2002. Private companies also play the game through their policy of sustainable development. "The Renault technocentre book us all its waste of concrete, which is a rigorous traceability", reflects Dimitri Jourdan.

The ecological advantages of this recycling has two origins: it limits the transportation of materials and avoids the need for natural specimens in careers, which result in a violation of biodiversity and landscapes. Yprema has chosen quantify these effects by make an analysis of lifecycle compared between natural aggregate and recycled aggregate by cabinet systems sustainable. The Justice of the peace confirms no surprise gain: a site such as traps allows a 92 of the resources economy and prevents 95 of gas discharge greenhouse. Comparable figures are made more difficult to quantify as the impact on ecosystems and health topics. Yprema hope this demonstration convinced local elected representatives for the validity of its activity, with the objective to invest several million euros in other sites already upgraded.