dc.contributor
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.contributor
Universitat Politècnica de Catalunya. ATEM - Anàlisi i Tecnologia d'Estructures i Materials
dc.contributor.author
Galindo, Anna
dc.contributor.author
Etxeberria Larrañaga, Miren
dc.identifier
Galindo, A., Etxeberria, M. Influence of treated recycled concrete aggregate on concrete properties. A: International Conference on Advances in Construction Materials and Systems. "Advances in Construction Materials and Systems: Proceedings of International Conference, Chennai, Sep 3-8, 2017: 71st RILEM Annual Week & ICACMS 2017, Chennai, India, 3rd-8th September 2017". Chennai: International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), 2017, p. 89-96.
dc.identifier
978-2-35158-190-2
dc.identifier
https://hdl.handle.net/2117/107774
dc.description.abstract
The amount and the quality of the old cement mortar attached to the aggregates influence the quality of the recycled concrete aggregate (RCA) produced. The characteristics of RCA adversely affect the physical, mechanical and durability properties of concretes. Due to these adverse effects, it is necessary to improve the RCA properties, not only changing their surface but also their internal microstructure. The main objective of this research work was to analyse the influence of chemically treated RCA on the properties of recycled aggregate concrete (RAC). The RCA was exposed to three chemical treatments, namely; silica fume (SF), waterglass (WG) and silica nanoparticles (Nano). Once the physical properties of both the untreated and treated RCA had been determined they were then employed in concrete production. RAC were produced employing 25% and 50% of RCAs in substitution of natural coarse aggregates. The obtained results by the RAC produced employing treated RCA were compared to those of the conventional concrete as well as to those of the RAC employing untreated aggregates. According to the results, the RAC produced employing RCA treated with WG and Nano achieved better compressive strength and durability properties than the RAC or CC concrete at 28 and 90 days.
dc.description.abstract
Postprint (author's final draft)
dc.format
application/pdf
dc.publisher
International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM)
dc.rights
Restricted access - publisher's policy
dc.subject
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
dc.subject
Aggregates (Building materials)--Recycling
dc.subject
recycled concrete aggregate
dc.subject
chemical treatments
dc.subject
physical properties
dc.subject
recycled aggregate concrete
dc.subject
hardened properties
dc.subject
Àrids (Materials de construcció) -- Reciclatge
dc.title
Influence of treated recycled concrete aggregate on concrete properties
dc.type
Conference report
