Field trials on covercrete monitoring sensors

W. J. McCarter; A. Butler; Malcolm Chrisp; M. Emerson; G. Starrs; J. Blewett

doi:10.1680/stbu.146.3.295.45435

Field trials on covercrete monitoring sensors

W. J. McCarter, A. Butler, Malcolm Chrisp, M. Emerson, G. Starrs, J. Blewett

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

This paper details the application of in situ electrical measurements to study cover-zone performance and presents the initial results from a long-term field exposure study. Field data are presented from a marine test site, an urban exposure site and a roadside test site. A range of formalisms are exploited to allow ease in data interpretation and a simple electrical model is used to show the interrelationship between electrical properties of concrete, pore structure, degree of pore saturation and ionic ingress. Measurements, to date, indicate that the sensor arrangement embedded within each of the test specimens is behaving as anticipated from previous laboratory studies. Water absorption, ongoing hydration and pozzolanic activity are detected within the cover zone and, in the case of the marine site, ionic ingress is detected in one of the sets of test specimens.

Original language	English
Pages (from-to)	295-305
Number of pages	11
Journal	Proceedings of the ICE - Structures and Buildings
Volume	146
Issue number	3
DOIs	https://doi.org/10.1680/stbu.146.3.295.45435
Publication status	Published - Aug 2001

Keywords

Concrete structures
Corrosion
Field testing and monitoring

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10.1680/stbu.146.3.295.45435

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abstract = "This paper details the application of in situ electrical measurements to study cover-zone performance and presents the initial results from a long-term field exposure study. Field data are presented from a marine test site, an urban exposure site and a roadside test site. A range of formalisms are exploited to allow ease in data interpretation and a simple electrical model is used to show the interrelationship between electrical properties of concrete, pore structure, degree of pore saturation and ionic ingress. Measurements, to date, indicate that the sensor arrangement embedded within each of the test specimens is behaving as anticipated from previous laboratory studies. Water absorption, ongoing hydration and pozzolanic activity are detected within the cover zone and, in the case of the marine site, ionic ingress is detected in one of the sets of test specimens.",

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AU - Emerson, M.

AU - Starrs, G.

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