Improvement of Bearing Capacity in Recycled Aggregates Suitable for Use as Unbound Road Sub-Base Garach Morcillo, Laura López Alonso, Mónica Agrela, Francisco Ordóñez García, Bonifacio Javier Alegre Bayo, Francisco Javier Moya Ortiz, José Antonio self-cementing mechanical properties recycled aggregates Recycled concrete aggregates and mixed recycled aggregates are specified as types of aggregates with lower densities, higher water absorption capacities, and lower mechanical strength than natural aggregates. In this paper, the mechanical behaviour and microstructural properties of natural aggregates, recycled concrete aggregates and mixed recycled aggregates were compared. Different specimens of unbound recycled mixtures demonstrated increased resistance properties. The formation of new cement hydrated particles was observed, and pozzolanic reactions were discovered by electronon microscopy in these novel materials. The properties of recycled concrete aggregates and mixed recycled aggregates suggest that these recycled materials can be used in unbound road layers to improve their mechanical behaviour in the long term. 2024-10-01T10:01:44Z 2024-10-01T10:01:44Z 2015-12-16 journal article Garach, L. et. al. Materials 2015, 8, 8804–8816. [https://doi.org/10.3390/ma8125493] https://hdl.handle.net/10481/95334 10.3390/ma8125493 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional MDPI