<abstract xmlns="http://www.w3.org/1999/xhtml">

One of the most used methods of rehabilitation of road structures is the laying of a protective asphalt layer over a degraded concrete. The main problem of this solution is the reflective cracking, more precisely the transmission of the existing cracks in the lower layer in the asphalt pavement.
The method presented in this article involves an accelerated laboratory test on specimens composed of a pre-cracked concrete slab over which an asphalt slab is glued, subjected to equivalent traffic loads. This test allows the observation of the crack propagation from the lower layer to the upper layer, until it yields, through parameters such as deformed specimen, opening and length of the crack in asphalt, but also the opening of the existing crack in concrete, relative to the number of cycles.
By relating these parameters, important conclusions can be drawn about the behavior of the composite structure at reflective cracking, being able to choose the optimal recipe of the protective asphalt layer.
</abstract>

One of the most used methods of rehabilitation of road structures is the laying of a protective asphalt layer over a degraded concrete. The main problem of this solution is the reflective cracking, more precisely the transmission of the existing cracks in the lower layer in the asphalt pavement.
The method presented in this article involves an accelerated laboratory test on specimens composed of a pre-cracked concrete slab over which an asphalt slab is glued, subjected to equivalent traffic loads. This test allows the observation of the crack propagation from the lower layer to the upper layer, until it yields, through parameters such as deformed specimen, opening and length of the crack in asphalt, but also the opening of the existing crack in concrete, relative to the number of cycles.
By relating these parameters, important conclusions can be drawn about the behavior of the composite structure at reflective cracking, being able to choose the optimal recipe of the protective asphalt layer.

Accelerated Laboratory Testing for Reflective Cracking

Lecturer Ph.D. Eng., Technical University of Civil Engineering

Romanian Journal of Transport Infrastructure

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Accelerated Laboratory Testing for Reflective Cracking"}

One of the most used methods of rehabilitation of road structures is the laying of a protective asphalt layer over a degraded concrete. The main problem of...

Accelerated Laboratory Testing for Reflective Cracking

Published Online: Aug 30, 2021

Page range: 34 - 49

DOI: https://doi.org/10.2478/rjti-2021-0003

Keywords
reflective cracking, cracking parameters, accelerated test

© 2021 Mihai Gabriel Lobază, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Accelerated Laboratory Testing for Reflective Cracking

Published Online: Aug 30, 2021

Page range: 34 - 49

DOI: https://doi.org/10.2478/rjti-2021-0003

Keywordsreflective cracking, cracking parameters, accelerated test

© 2021 Mihai Gabriel Lobază, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
reflective cracking, cracking parameters, accelerated test