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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/222693
- Field performance of recycled aggregate concrete
- Sagoe-Crentsil, Kwesi; Brown, Trevor; Taylor, Alan
- Test results of field and laboratory performance tests carried out on a 25 MPa premix concrete made with commercial grade course recycled concrete aggregate and natural fine sand are reported. The field tests involved the construction of a 400m long bicycle/footpath comprising sections with and without recycled aggregate. The 56 day shrinkage and one year concrete core compressive strengths of the recycled and conventional reference concretes were found to be comparable. For laboratory trials preceding the field tests concrete mixes with similar mix proportions and workability showed comparable 28 day compressive and tensile strengths at the 5% significance level for recycled and conventional concrete mixes. However higher drying shrinkage values of the order of 25% were recorded at one year for standard cured recycled concrete specimens. The ratio of splitting tensile strength / compressive strength remained in good agreement with literature values reported for equivalent grade concrete mixes made with normal weight natural aggregates. Factors influencing recycled aggreagate quality and concrete performance for production grade recycled aggregates are examined. The discussion evaluates recycled aggregate properties and field performance of premix concrete made with plant graded recycled concrete for non-structural construction techniques.
- Publication type
- Conference paper
- Proceedings of 'Adding value through innovation', the 20th Biennial Conference of the Concrete Institute of Australia, Perth, Australia, 11-14 September 2001, pp. 447-451
- Publication year
- Australia; Concrete testing; Cycleways; Footpaths; Recycled aggregate
- Concrete Institute of Australia
- 9780909375560, 0909375569
- Publisher URL
- Copyright © 2001.
- Peer reviewed