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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Field Performance of Recycled Aggregate Concrete
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Abstract:Field and laboratory performance tests have been carried out on a 25 MPa premix concrete made with commercial grade coarse recycled concrete aggregate and natural fine sand. The field tests involved the construction of a 400 m long bicycle/footpath comprising sections with and without recycled aggregate. The 56-day drying 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 made 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.
Concrete Institute of Australia, International Partner Access.
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