1. Eurostat. . 2016.
2. Commission, E., COM(2011) 571 Roadmap to a Resource Efficient Europe. Communication from the Commission to the European Parliament. 2011.
3. EHE 08 Code on structural concrete. 2010, Ministerio de Fomento de España: Spain.
4. BS 8500-2:2002: Concrete-complementary british standard to BS EN 206-1. Part 2: specification for constituent materials and concrete. 2002: Great Britain.
5. DIN 4226-100, mineral aggregates for concrete and mortar – part. 100: recycled aggregates. 2000: Germany.