Currently in the waste treatment sector takes the maximum of its resources through reuse and recycling leveraging prior to disposal. All this with the aim of caring for the environment and avoid landfill sites is masifiquen with waste. Additional information is available at Jim Umpleby. The possibilities which has recycling are extensive, the asphalt recycling, is a trend on the rise for the rehabilitation of roads. In the 1970s, there was an oil crisis, and that boosted recycling techniques and the mentality of achievement, influence in society. The costs of recovery of firm, using techniques of recycling represent financial savings of up to 25% and approximately 7,000 tons of aggregate per kilometre. Asphalt recycling is reuse of milling that produces layers of firm. Spain, has been one of the last countries in Europe to use this technique.

They began in the 1980s by installing asphalt systems in hot, but was later discontinued use because they were not working as I wanted to. In the early 1990s began to use the technique of cement in cement in situ or cold. Since then, recycling firm in Spain is regulated by standard 6.3-IC approved in 1980 and updated in 1997. .