Evaluation of Characteristics and Building Applications of Multi-Recycled Concrete Aggregates from Precast Concrete Rejects
Autor: | Ángel Salesa, Luis M. Esteban, Pedro Luis Lopez-Julian, José Ángel Pérez-Benedicto, Alejandro Acero-Oliete, Alfredo Pons-Ruiz |
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Jazyk: | angličtina |
Rok vydání: | 2022 |
Předmět: |
Impacto medioambiental
3308.07 Eliminación de Residuos Industria de la construcción 3312.08 Propiedades de Los Materiales 3312.12 Ensayo de Materiales Hormigón reciclado Prefabricados General Materials Science 3313.04 Material de Construcción construction and demolition waste multi-recycled concrete aggregates green road construction recycled concrete physico-mechanical properties Residuos de Construcción Demolición (RCD) Áridos reciclados |
Zdroj: | Materials; Volume 15; Issue 16; Pages: 5714 |
DOI: | 10.3390/ma15165714&partnerID=40&md5=69af4c1eb91dca6901c70e16892b0f25 |
Popis: | The construction industry must meet current environmental requirements, mostly those pertaining to the reduction in construction and demolition waste and the consumption of raw materials. The use of recycled concrete aggregates can be part of the solution, but one question that arises is how many times recyclables can be recycled. This unknown involves other related queries regarding the properties and possible uses of repeated recycled concrete aggregates. This research is derived from the precast concrete industry, where multi-recycling is a pressing need. From good-quality parent concretes, three cycles of recycled concrete aggregates were produced and analysed. The final results are promising due to the good quality of the recycled and multi-recycled concrete aggregates obtained. Not only can they be used in low-level applications (backfilling) as usual, but they can also be used for more demanding purposes, such as graded aggregates, cement-treated road bases and concrete pavements. Their use in structural concrete is feasible, but it will be dependent on the water absorption level and the amount of recycled aggregate substitution. This research proves the viability of multi-recycled concrete aggregates with all of the associated environmental benefits. © 2022 by the authors. |
Databáze: | OpenAIRE |
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