Use of reclaimed asphalt pavement to improve lateritic clayey soil in road base layer

Authors

DOI:

https://doi.org/10.58922/transportes.v34.e3174

Keywords:

Recycling, Dynamic triaxial tests, Resilient modulus.

Abstract

The increase in the production of reclaimed asphalt pavement has led to a need for research on its reuse in road construction bases and subbases, aiming for environmental and economic benefits. This work analyzes the mechanical behavior of composites of clayey lateritic soil and reclaimed asphalt pavement (RAP) in different proportions of soil and RAP (100/0, 75/25, 50/50, and 25/75, in mass percentage), performed using Proctor compaction tests at modified energy, direct shear, and resilient modulus. The presence of RAP in the composites improved the mechanical behavior of the mixtures, evidenced by higher resilient modulus, cohesion, and friction angles. Furthermore, the tests demonstrated that samples with 50% of RAP provided a better balance between dynamic stiffness and shear strength, recommending their use in road base layers.

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Published

2026-02-27

How to Cite

Antezana Fajardo, G., Souza de Oliveira, C., Ribeiro Plácido, R., de Jesus Souza, T. and Lavoie, F. L. (2026) “Use of reclaimed asphalt pavement to improve lateritic clayey soil in road base layer”, Transportes, 34, p. e3174. doi: 10.58922/transportes.v34.e3174.

Issue

Vol. 34 (2026)

Section

Articles

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Copyright (c) 2026 Gustavo Antezana Fajardo, Clara Souza de Oliveira, Rafael Ribeiro Plácido, Tiago de Jesus Souza, Fernando Luiz Lavoie

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Last update: 11/27/2025