Locating voids beneath pavement using a pulsed radar

Steinway, William J.; Lüke, Christian; Echard, J.

doi:10.1109/icassp.1982.1171759

Cited by 2 publications

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“…The method is based on determining the stiffness modulus of 49 each layer that makes up the pavement using back-calculation in 50 order to obtain the state of stress and strain in significant points [3]. and locating cavities beneath the structure of a road (e.g., [5][6][7][8] to concrete [32,33], to ballast for railway infrastructure [34,35] 168 and to other media [36]. 169 Other studies have analysed the alterations in the frequency 170 spectra as the ratio of two materials changes.…”

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Evaluation of the GPR frequency spectra in asphalt pavement assessment

Rodés

Pérez-Gracia

Martínez-Reguero

2015

Construction and Building Materials

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Ground penetrating radar (GPR) is frequently used in pavement assessments, mainly using the evaluation of wave travel times. However, GPR data provide further information that could be used in order to determine the inner conditions and characteristics about materials. In this paper, the possible analysis of the frequency spectrum of GPR signals is analysed and discussed. Several tests were carried out in a portion of a highway in two different stages of its service life. Results highlight the relationship between the shape of the spectrum and the frequency signature with the structure and conditions of the pavement.Preprin

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confidence: 99%