Laboratorial evaluation of the bond condition between granular base and asphalt concrete

Authors

  • Renan Gustavo Scherer Federal University of Santa Maria, Rio Grande do Sul – Brazil
  • Deividi da Silva Pereira Federal University of Santa Maria, Rio Grande do Sul – Brazil
  • Luciano Pivoto Specht Federal University of Santa Maria, Rio Grande do Sul – Brazil
  • Lucas Dotto Bueno Federal University of Santa Maria, Rio Grande do Sul – Brazil

DOI:

https://doi.org/10.14295/transportes.v30i3.2725

Keywords:

Bonding between layers, Interface shear, Paving

Abstract

The bond condition between the aggregate base and the asphalt concrete is a factor that has significantly influence on the calculation of stresses, strains and displacements in its interior, therefore impacting its dimensioning. This article aims to experimentally evaluate the bond condition between these layers, by means of tests that investigated the interface shear, also verifying the influence of temperature, normal stress and different treatments of this interface. For this, the test presented in Scherer et al. (2020) was used, with which it is possible to evaluate the shear strength at the interface with normal stress actuation using a test apparatus coupled to a universal testing machine. The results obtained demonstrated that the temperature, the normal stress, and the treatment performed at the interface are correlated with shear strength and shear reaction modulus. Also, that the values of these are higher when applying of prime coat plus tack coat, at low temperatures and with high normal stress. For the conditions studied in this research, considering the reference values for the shear reaction modulus found in the international literature, the indication that the unbonded interface condition is the one that best represents the possible field condition was obtained.

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Imagem da capa, volume 30, número 3

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Published

2022-10-27

How to Cite

Scherer, R. G. ., da Silva Pereira, D. ., Pivoto Specht, L. ., & Dotto Bueno, L. . (2022). Laboratorial evaluation of the bond condition between granular base and asphalt concrete. TRANSPORTES, 30(3), 2725. https://doi.org/10.14295/transportes.v30i3.2725

Issue

Vol. 30 No. 3 (2022)

Section

Artigos

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Copyright (c) 2022 Renan Gustavo Scherer, Deividi da Silva Pereira, Luciano Pivoto Specht, Lucas Dotto Bueno

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