Fracture Properties and Microstructure of Concrete Made with Recycled Aggregate

Abstract:

This paper presents the results of the fracture properties and microstructure of recycled aggregate concrete (RAC) compared with those of natural aggregate concrete (NAC). Concrete specimens were fabricated and tested with the recycled coarse aggregate (RCA) replacing of 0%, 40%, 70% and 100%, respectively. The three-point bending beam method was used to measure the fracture properties of the concrete. SEM and X-CT were used to investigate the microstructure of the concrete. The RCA addition in the concrete caused a decrease in the fracture properties and loose microstructure.

• Periodical: Advanced Materials Research (Volume 773)
• Pages: 693-699
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.773.693
• Online since: September 2013
• Authors: Bing Qi, Jian Ming Gao
• Keywords: Concrete, Fracture Energy, Fracture Toughness, Microstructure, Recycled Aggregate (RA)

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