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Materials 2015, 8(7), 4457-4478; doi:10.3390/ma8074457

Experimental Study on Thermal Conductivity of Self-Compacting Concrete with Recycled Aggregate

1
Department of Design in Engineering, Industrial Engineering School, University of Vigo, Vigo 36310, Spain
2
Department of Mechanical Engineering, Machines and Thermal Engines and Fluids, Industrial Engineering School, University of Vigo, Vigo 36310, Spain
3
Department of Materials Engineering, Applied Mechanics and Construction, Industrial Engineering School, University of Vigo, Vigo 36310, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Jorge de Brito
Received: 27 April 2015 / Revised: 6 July 2015 / Accepted: 7 July 2015 / Published: 20 July 2015
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Abstract

The research focuses on the use of recycled aggregate (RA), from waste pieces generated during production in precast plants for self-compacting concrete (SCC) manufactured with a double sustainable goal: recycle manufacturing waste (consumption) and improvement of the thermal properties of the manufactured product (energy efficiency). For this purpose, a mechanical study to ensure technical feasibility of the concrete obtained has been conducted, as well as a thermal analysis of recycled SCC specimens of 50 N/mm2 resistance, with different RA doses (0%, 20%, 50% and 100%). The main parameters that characterize a SCC in both states, fresh (slump-flow) and hard (compressive strength), have been tested; also, a qualitative analysis of the thermal conductivity using infrared thermography (IRT) and quantitative analysis with heat flow meter at three temperatures 20 °C, 25 °C and 30 °C have been performed. The results suggest the existence of two different thermal behaviors: concretes with 0% and 20% of RA, and on the other hand concretes with 50% and 100% of RA. It has also demonstrated the validity of the IRT as sampling technique in estimating the thermal behavior of materials having reduced range of variation in parameters. View Full-Text
Keywords: self-compacting concrete; recycled aggregate; thermal conductivity; infrared thermography self-compacting concrete; recycled aggregate; thermal conductivity; infrared thermography
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Fenollera, M.; Míguez, J.L.; Goicoechea, I.; Lorenzo, J. Experimental Study on Thermal Conductivity of Self-Compacting Concrete with Recycled Aggregate. Materials 2015, 8, 4457-4478.

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