Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction and demolition waste as recycled aggregate for environmentally friendly concrete paving
Recycled aggregates (RA) from construction and demolition waste (CDW) instead of natural aggregates (NA) were analysed in the manufacture of new eco-friendly concrete. Fine (FRA) and coarse (CRA) recycled aggregates were used in different percentages as substitutes of natural sand and gravel, respectively. The results revealed that the use of RA in percentages of up to 50wt.%is feasible. Additionally, RA were used to produce paving blocks in accordancewith industrial requirements. Thus, values of water absorption lesser than 6.0%and tensile strength upper than 3.6MPa were obtained, which are similar to those of a reference sample and within the limit values established by the regulations. These results were achieved by reducing the incorporation of cement, thereby saving production costs and minimizing environmental impact. ; Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This research has been partially supported by the Centre for the Development of Industrial Technology (CDTI) to the Spanish Ministry of Economy, Industry and Competitiveness (MINECO), by the project “Eco-efficient concrete urban paving from mixed recycled aggregates obtained from CDW” (Ref.: IDI-20180931). This research has been partially supported by RENSMA (Research Centre for Natural Resources, Health and Environment), University of Huelva, Spain. ; Funding for open access charge: Universidad de Huelva / CBUA ; Publisher’s version
Construction and demolition waste as recycled aggregate for environmentally friendly concrete paving
Recycled aggregates (RA) from construction and demolition waste (CDW) instead of natural aggregates (NA) were analysed in the manufacture of new eco-friendly concrete. Fine (FRA) and coarse (CRA) recycled aggregates were used in different percentages as substitutes of natural sand and gravel, respectively. The results revealed that the use of RA in percentages of up to 50wt.%is feasible. Additionally, RA were used to produce paving blocks in accordancewith industrial requirements. Thus, values of water absorption lesser than 6.0%and tensile strength upper than 3.6MPa were obtained, which are similar to those of a reference sample and within the limit values established by the regulations. These results were achieved by reducing the incorporation of cement, thereby saving production costs and minimizing environmental impact. ; Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This research has been partially supported by the Centre for the Development of Industrial Technology (CDTI) to the Spanish Ministry of Economy, Industry and Competitiveness (MINECO), by the project “Eco-efficient concrete urban paving from mixed recycled aggregates obtained from CDW” (Ref.: IDI-20180931). This research has been partially supported by RENSMA (Research Centre for Natural Resources, Health and Environment), University of Huelva, Spain. ; Funding for open access charge: Universidad de Huelva / CBUA ; Publisher’s version
Construction and demolition waste as recycled aggregate for environmentally friendly concrete paving
Contreras Llanes, Manuel (Autor:in) / Bolívar Raya, Juan Pedro (Autor:in) / Gázquez González, Manuel Jesús (Autor:in) / Romero, Maximina (Autor:in)
10.09.2021
doi:10.1007/s11356-021-15849-4
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
690
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