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New Decree 5/2023 for recycled aggregates in Castilla León

Monday 12, June 2023

Materials from the recovery of construction or demolition waste that do not meet the requirements established in these regulations will be considered for all purposes as waste.

(BOCYL) 2023/06/12.- On May 28, Decree 5/2023, of May 4, came into force, regulating the production and sustainable management of construction and demolition waste in Castilla y León.

Decree 5/2023 complements the regional, national and European provisions on the matter, regulating aspects such as:

  • Obligation to use recycled aggregates in public works promoted by the Autonomous Administration and carried out in the territorial scope of the Community of Castilla y León, establishing the minimum percentages depending on the type of work in question.
  • Obligation to separate the waste generated in construction and demolition works into fractions, in accordance with the regulations on waste.
  • Need for CE marking for recycled aggregates.
  • The requirements for both recycled aggregates and suitable inert residues are established. Among the requirements, a series of limit values ​​for contaminants and a methodology and frequency of characterization are defined.
  • Permitted uses and requirements for suitable inert waste.
  • Information obligations are established for authorized waste managers.
  • The obligation to deposit a financial guarantee is established for RCD management plants.

Decree 5/2023 establishes the following minimum percentages, with respect to the use of recycled aggregate in works promoted by the Administration of Castilla León (table on the right):


With respect to the limit values ​​of the environmental parameters required for recycled aggregates, the decree of the Junta de Castilla y León, in its annex II, establishes the technical requirements (ex. CE marking) that the materials must comply with, the leaching to be carried out, the content of organic substances soluble in organic solvents, the content of improper materials, as well as the testing and sampling methods.

Decree 5/2023 of the Ministry of the Environment establishes that materials that do not meet the requirements established in annex II will be considered, for all purposes, as waste (LER codes 191 09 or 191212).

The Decree of the Junta de Castilla y León environmentally validates the use of recycled aggregates used in bound applications (those in which a binding element is used together with the aggregate for its correct functional performance), without the need to verify compliance with the limit values ​​of environmental parameters indicated in tables 1, 2 and 3 of annex II.


We produce recycled aggregates in Castilla y León. Does this change affect us?

In a direct way. In addition to the requirements regarding the CE Marking, the Factory Production Control System should be reviewed including the new requirements established in Decree 5/2023 of the Junta de Castilla y León.

Depending on the use of the material, the recycled aggregates, to have the CE marking of the aggregate must comply with technical standards. The main ones are:

Aggregates for granular layers and layers treated with hydraulic binders for use in structural layers of road surfaces UNE-EN 13242:2003+A1:2008 (EN 13242:2002+A1:2007),
Aggregates for concrete UNE-EN 12620:2003+A1:2009 (EN 12620:2002+A1:2008),
Aggregates for bituminous mixtures and surface treatments for roads, airports and other paved areas UNE-EN 13043:2003 and UNE-EN 13043/AC:2004 (EN 13043:2002 and EN 13043:2002/AC:2004),

The technical standards for the CE Marking already contemplate these requirements. When required and in case of doubt, the documentation required for the CE Marking must ensure compliance with the legislation on dangerous substances.


We provide solutions

works in the field of recycled aggregates together with the main companies in the sector, establishing the guidelines and requirements required by the CE Marking of these products.

Since 2004, all aggregates marketed in Europe for use in construction products must have the mandatory CE marking. The Conformity Assessment System is 2+ (Regulation (EU) 305/2011 for construction products).

Decree 5/2023 of the Junta de Castilla y León can be consulted through the following link.

The information contained herein is collected from various sources. Although we try to make it correct, accurate and current, we cannot guarantee that it will continue to be so at the time it is accessed. For this reason, any initiative that can be taken using such information as a reference must be preceded by an exhaustive verification of its reality and accuracy, as well as the relevant professional advice from our consulting and development area.