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Authors

  • Lucio. Salles de Salles Universidade de São Paulo
  • José Tadeu Balbo Universidade de São Paulo
  • Deividi da Silva Pereira Universidade Federal de Santa Maria

DOI:

https://doi.org/10.14295/transportes.v23i2.835

Keywords:

Continuously Reinforced Concrete Pavement, Cracking, Load Transfer Efficiency, Dynamic Stresses.

Abstract

As a proposed long-term pavement solution for bus stops and corridors in highly urbanized areas, four experi-mental short continuously reinforced concrete pavement (CRCP) sections with different percentages of longitudinal steel were built in São Paulo, Brazil. The pavement sections are only 50 meters long each, a short constructive length in comparison to traditional CRCP normally built as long as the concreting process allows. A four-year crack survey showed that the shorter length, and the consequential lack of anchorage, makes the short CRCP crack pattern to be unlike the traditional CRCP one; for instance, one of the pavement sections did not present any cracks yet. Two non-destructive tests were carried out to evaluate the short CRCP’s structural performance: firstly, deflection tests using a falling weight deflectometer to evaluate layer elastic parameters through backcalculation, i. e., elastic modulus of concrete (E) and mudulos of subgrade reaction (k) and to determinate the load transfer efficiency across cracks; secondly, dynamic load tests to obtain the concrete stresses under a known truck axle load. The results show lower E and k for points near the slab edge and the braking influence on the stresses.

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Author Biographies

Lucio. Salles de Salles, Universidade de São Paulo

Candidato a Doutorado

Departamento de Engenharia de Transportes - EPUSP

José Tadeu Balbo, Universidade de São Paulo

Professor Associado

Deividi da Silva Pereira, Universidade Federal de Santa Maria

Professor Assistente

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Published

2015-08-28

How to Cite

Salles, L. S. de, Balbo, J. T., & Pereira, D. da S. (2015). Transportes, 23(2), 65–74. https://doi.org/10.14295/transportes.v23i2.835

Issue

Vol. 23 No. 2 (2015)

Section

Articles

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