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000864769 0247_ $$2doi$$a10.1016/j.cemconcomp.2019.103397
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000864769 1001_ $$0P:(DE-HGF)0$$aLeroy, Philippe$$b0$$eCorresponding author
000864769 245__ $$aSpectral induced polarization of low-pH cement and concrete
000864769 260__ $$aAmsterdam [u.a.]$$bElsevier Science68442$$c2019
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000864769 520__ $$aConcrete is the most used material for civil and industrial infrastructures. In the context of a geological disposal of nuclear waste, concrete performance may be degraded when in contact with the host formation. The ability to monitor the changes of the concrete properties using the spectral induced polarization (SIP) method is therefore of great interest. In our study, SIP laboratory measurements in the 100 mHz to 45 kHz frequency range were carried out on low-pH cement and concrete. These materials exhibited a very high resistivity (mostly above 10 kΩ m) and a high phase shift (mostly above 100 mrad) between measured voltage and injected current. The complex resistivity measurements were interpreted using electrochemical and microstructural membrane and Maxwell-Wagner polarization models. Relevant information on the mean pore size, pore size distribution, and connected porosity was obtained from SIP, opening up the possibility of using our approach to monitor concrete stability in-situ.
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000864769 7001_ $$0P:(DE-HGF)0$$aHördt, Andreas$$b1
000864769 7001_ $$0P:(DE-HGF)0$$aGaboreau, Stéphane$$b2
000864769 7001_ $$0P:(DE-Juel1)133962$$aZimmermann, Egon$$b3
000864769 7001_ $$0P:(DE-HGF)0$$aClaret, Francis$$b4
000864769 7001_ $$0P:(DE-HGF)0$$aBücker, Matthias$$b5
000864769 7001_ $$0P:(DE-HGF)0$$aStebner, Hermann$$b6
000864769 7001_ $$0P:(DE-Juel1)129472$$aHuisman, Johan Alexander$$b7$$ufzj
000864769 773__ $$0PERI:(DE-600)1502279-1$$a10.1016/j.cemconcomp.2019.103397$$gVol. 104, p. 103397 -$$p103397$$tCement and concrete composites$$v104$$x0958-9465$$y2019
000864769 8564_ $$uhttps://juser.fz-juelich.de/record/864769/files/%5B123%5DLeroy2019_PostPrint.pdf$$yPublished on 2019-08-21. Available in OpenAccess from 2021-08-21.
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