Mechanical Properties of Concrete Made with Recycled Aggregates


Abstract in English

The large increase in the volume of demolition concrete waste and its impact on the environment has led to reconsider of using concrete demolition rubble as a partial or a whole alternative of natural aggregates to produce new concrete which has the required properties to use in engineering constructions[1]. With the possibility of improving the mechanical properties of this concrete by processing this aggregates before using it or support this concrete with fiber to improve its structural behavior. This research deals with the study of the replacement the natural aggregates used in concrete with recycled concrete aggregates resulting from the demolition rubble , according to different replacement ratiosranging between 0 % -25 % -50 % -75 % -100% and the impact on the concrete behavior with a natural aggregates and determine the optimal replacementpercentage. The results showed a relative decrease in the concrete resistance on the simple pressure , limited decrease in the volumetric mass also, and a slight adjustment to the behavior of concrete under the loading effect by increasing the replacement proportion of the natural aggregateswith recycled concrete aggregates..

References used

J.S. Ryu, “An experimental study on the effect of recycled aggregateconcrete properties, Mag. Concr. Res. 54 (1) (2002) 7 – 12
Symonds Group Ltd 46967, “Construction and demolition waste management practices, and their economic impacts”. Final Report to DGXI, European Commission, February 1996
Topcu , I.B and sengel .,"Properties of concrete produced with waste concrete aggregate" , Journal of cement and concrete Research ,34 (2004) , 1307-1312

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