Published: 2023-12-30

Use of reclaimed asphalt pavement (RAP) as aggregate for production of cement-bound granular mixtures

Stanisław Majer , Bartosz Budziński

Abstract

Asphalt concrete from old pavements may be reused as a semi-product in production of new bituminous mixtures or recycled in place using the cold-in-place recycling method. The first of the two above-mentioned recycling methods is appropriate when dealing with uniform materials, coming from bituminous pavements whose parameters are either known or can be reliably determined. The second method comes into play when dealing with old pavements in which the mixes used for the respective layers included different bituminous binders, typical of local roads in Poland. Smaller size jobs are an example of works for which cold-in-place recycling methods are not practicable. Fortunately, there is an option of using the old asphalt or reclaimed asphalt pavement (RAP) as aggregate in production of cement-bound mixtures. This paper describes the study on determination of their properties. These properties included density, compressive strength at different temperatures, split tensile strength and Marshall stability. The results of the relevant tests, which were carried out as part of this study, showed suitability of RAP as aggregate used for production of cement stabilised base mixtures.

Keywords:

reclaimed asphalt pavement (RAP), cement bound granular mixture, compressive strength, Marshall stability, recycling

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Majer, S., & Budziński, B. (2023). Use of reclaimed asphalt pavement (RAP) as aggregate for production of cement-bound granular mixtures. Roads and Bridges - Drogi I Mosty, 22(4), 527–532. https://doi.org/10.7409/RABDIM.023.033

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