In-situ radar remote sensing applied to the detection of degradation in a concrete floor

Henrique Lorenzo; M. Carmen Hernandez; Vicente Cuellar

doi:10.1117/12.383608

27 April 2000 In-situ radar remote sensing applied to the detection of degradation in a concrete floor

Henrique Lorenzo, M. Carmen Hernandez, Vicente Cuellar

Proceedings Volume 4084, Eighth International Conference on Ground Penetrating Radar; (2000) https://doi.org/10.1117/12.383608
Event: 8th International Conference on Ground Penetrating Radar, 2000, Gold Coast, Australia

Abstract

This paper describes a GPR study carried out with the aim of evaluating deterioration of concrete floors in textile factories. During some years, spillages from the production process were split onto the floor of the factory. The slow but continue action of these spillages in the concrete caused an important variation in its porosity, which could be detected by studying changes in GPR reflected pulse. A simple synthetic model was developed in order to obtain information about how the response of GPR antenna pulse is depending on changes in the porosity of concrete. We also take into account the different conditions of the factory floor at the moment (since many years ago it's been isolated from the action of the spillage). The heterogeneous conditions of the floor and the simplicity of the model used did not allow for an accurate estimation of porosity, but it was possible to map degraded areas on the floor related to changes in the reflected signal. Core drills made later confirmed in some of them a concrete porosity of up to 25%, closer to that of sand than to concrete.

Citation Download Citation

Henrique Lorenzo, M. Carmen Hernandez, and Vicente Cuellar "In-situ radar remote sensing applied to the detection of degradation in a concrete floor", Proc. SPIE 4084, Eighth International Conference on Ground Penetrating Radar, (27 April 2000); https://doi.org/10.1117/12.383608

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