Abstract
This paper presents the results of a study of the long term mechanical properties and pore structures of recycled aggregate concrete. In this study, two different sources of recycled aggregates were used to replace natural aggregate at a level of 100%. The compressive and splitting tensile strength of the concrete were tested, and the pore structures of the concrete were analyzed. The results showed that after 5 years of curing, the recycled aggregate concretes had lower compressive strength and higher splitting tensile strength than the corresponding natural aggregate concrete. However, from 28 days to 5 years, the increase of compressive and splitting tensile strengths was more in the recycled aggregate concretes. After 5 years of curing, the concrete made with 100% of crushed old concrete aggregate had the lowest porosity. Good correlations were found between compressive and tensile strength and porosity.
Original language | English |
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Pages (from-to) | 286-291 |
Number of pages | 6 |
Journal | Cement and Concrete Composites |
Volume | 33 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Feb 2011 |
Keywords
- Long-term properties
- Mechanical properties
- Porosity
- Recycled aggregate concrete
ASJC Scopus subject areas
- Building and Construction
- General Materials Science