Ground penetrating radar wave attenuation models for estimation of moisture and chloride content in concrete slab

• Published in: Construction and Building Materials
• Main Author: Senin S.F.; Hamid R.
• Format: Article
• Language: English
• Published: Elsevier Ltd 2016
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84952837484&doi=10.1016%2fj.conbuildmat.2015.12.156&partnerID=40&md5=479f0c179f3d034304bfebd6216199db

The detection of moisture and chloride ingress through concrete cover is important for estimating the extent of corrosion in reinforced concrete (RC) components. The concentrations of the substances are monitored by observing the ground penetrating radar (GPR) amplitude attenuation in water and chloride saturated concrete slab samples. The amplitude attenuation significantly correlates with the amount of both substances. Two multiple nonlinear regression models were developed. The proposed models demonstrate a strong correlation with the radar amplitude attenuation data as both substances are varied in the concrete cover. The developed models can be employed to estimate the moisture and free chloride content in - concrete cover for improved quantification of corrosion level. © 2015 Elsevier Ltd. All rights reserved.