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Open AccessFeature PaperArticle

Influence of Recycled Precast Concrete Aggregate on Durability of Concrete’s Physical Processes

by 1, 2,*, 1 and 3
1
Department of Construction, University of Burgos, EPS, Calle Villadiego s/n, 09001 Burgos, Spain
2
LADICIM (Laboratory of Materials Science and Engineering), University of Cantabria, E.T.S. de Ingenieros de Caminos, Canales y Puertos, Av/Los Castros, 39005 Santander, Spain
3
Campus de Gijón, Department of Construction and Manufacturing Engineering, University of Oviedo, 33203 Asturias, Spain
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(20), 7348; https://doi.org/10.3390/app10207348
Received: 28 August 2020 / Revised: 30 September 2020 / Accepted: 19 October 2020 / Published: 20 October 2020
(This article belongs to the Special Issue Advances in High-Performance of Eco-Efficient Concrete)
The research presented in this article analysed the influence of incorporating precast concrete waste as an alternative to coarse aggregate in self-compacting concrete to generate new precast elements. The experimental study involved the characterization of recycled aggregate and the design of the mix of the new self-compacting concrete (SCC). The experimental study evaluates the physical processes that affect the durability of concrete with percentages of incorporation such as 20%, 50% and 100% of recycled aggregate. Two types of SCC were manufactured with minimum compressive strength of 30 MPa and 45 MPa. The properties analysed were density of hardened SCC, shrinkage cracking, freeze-thaw resistance, resistance to ageing by thermal shock and abrasion resistance. The results obtained were compared with those of the control concrete, observing great capacity of the SCC under physical aggressions that affect durability. The results of this research show that it is possible to use the recycled aggregate coming from precast pieces in order to the manufacture of self-compacting recycled concrete in the same precast industry. However, high loss of proprieties occurs for a 100% substitution, while for 20% and 50%, the variations with respect to control concrete are smaller. In addition, taking advantage of this waste to incorporate it back into the production chain contributes to more sustainable construction. View Full-Text
Keywords: recycled; precast; recycled concrete; recycled aggregate; durability; physical recycled; precast; recycled concrete; recycled aggregate; durability; physical
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MDPI and ACS Style

Fiol, F.; Thomas, C.; Manso, J.M.; López, I. Influence of Recycled Precast Concrete Aggregate on Durability of Concrete’s Physical Processes. Appl. Sci. 2020, 10, 7348.

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