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Authors

  • Fernando Silva Albuquerque Universidade Federal de Sergipe
  • Airton Teles de Mendonça Instituto Federal de Educação, Ciência e Tecnologia de Sergipe

DOI:

https://doi.org/10.14295/transportes.v25i2.1046

Keywords:

Cemented layers. Predicting fatigue. Miner’s Law.

Abstract

The development of fatigue damage in chemically stabilized layers is a function of the different stresses in the structure. This is the cumulative damage analysis, which one of the most performed method is the Miner's Law. However, with the progressive growth of the damage, the stiffness of the pavement layers decrease. Based on these ideas, a study was conducted to assess five performance prediction models for fatigue failure in Cemented Crushed Rock layer, which was evaluated for two years. Three of them (AASHTO, 2004; BALBO, 1999; PCA, 1984) performing computation by the ratio of tensile stress in the layer and its modulus of rupture. Due to the reduction of the layer stiffness, the tensile stress in the layer tends to decrease over time, resulting in a infinity fatigue life. The two other models (SAPEM, 2013; AUSTROADS, 2012) perform calculation by the tensile strain as a criterion of failure. As the tensile strain increases by the layer stiffness decrease, the two models predict fatigue life, however sub estimating the measured data. Further, a calibration of the two models was carried out for the analyzed segment, as well as defined models to estimate the modulus of the Cemented Crushed Rock layer as function of the damage development by the both models.

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Author Biographies

Fernando Silva Albuquerque, Universidade Federal de Sergipe

Possui graduação em Engenharia Civil pela Universidade Federal da Paraíba (2000), mestrado em Engenharia Civil e Ambiental pela Universidade Federal de Campina Grande (2004) e doutorado em Engenharia Civil pela Universidade Federal do Rio Grande do Sul (2007). Atualmente é professor da Universidade Federal de Sergipe. Tem experiência na área de Engenharia Civil, com ênfase em Pavimentos, atuando principalmente nos seguintes temas: gerência de pavimento, projeto de pavimentação e construção rodoviária.

Airton Teles de Mendonça, Instituto Federal de Educação, Ciência e Tecnologia de Sergipe

Departamento de Construção / Área de Pavimentos

References

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Published

2017-08-31

How to Cite

Albuquerque, F. S., & de Mendonça, A. T. (2017). TRANSPORTES, 25(2), 101–117. https://doi.org/10.14295/transportes.v25i2.1046

Issue

Vol. 25 No. 2 (2017)

Section

Artigos

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