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The construction industry is one of the sectors bearing the greatest responsibility for the consumption of natural resources and the generation of waste. Construction and demolition is one of the principal focuses of attention in the search for sustainable construction. Mean average production in Europe of Construction and Demolition Waste (CDW) stands at 0.38 t/per person/per year, and only countries such as Denmark and the Netherlands have recycling rates of over 85%. >35 million tons of CDW (1.1 t/per person/per year) are produced in Spain alone [1]. With regard to prefabricated concretes at an international level, the "Precast Sustainability Strategy and Charter" of the British Precast Concrete Federation is first and foremost [2]. This plan encourages precast firms to go beyond the requirements of current legislation, by instituting measures on a voluntary basis to add greater sustainability to their products and operations. In 2013, the British Precast Council approved a new battery of measures for implementation throughout the year. The Netherlands and Germany may be highlighted in Europe among the countries that opt for the precast industry, where precast solutions in construction amount to 45% and 38%, respectively [3]. An effort is made to comply with the basic requirement for "sustainable use of natural resources", included in EU Regulation 305/2011 [4] on harmonized conditions for the marketing of construction products. The European Regulation under article 11.2b [4] also includes the objective for Member states to adopt certain measures, among which: to guarantee recycling to a minimum of 70% by weight of Construction and Demolition Wastes (CDW) before 2020. The promotion of research studies related to the sustainability of companies dedicated to concrete products through the incorporation of recycled aggregates is an incentive and an advance for society. A large number of investigations have arisen from the exploitation of these waste products, in which the different forms of using Recycled Aggregates (RA) in the manufacture of concrete have been analysed [5-8], but there are few studies that use RA The influence of recycled aggregates from precast elements on the mechanical properties of structural self-compacting concrete F. Fiol a, ⁎

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