3 results match your criteria Cement And Concrete Research[Journal]

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Anion Capture and Exchange by Functional Coatings: New Routes to Mitigate Steel Corrosion in Concrete Infrastructure.

Cem Concr Res 2017 Nov 4;101:82-92. Epub 2017 Sep 4.

Laboratory for the Chemistry of Construction Materials (LC), Department of Civil and Environmental Engineering, University of California, Los Angeles, CA, USA.

Chloride-induced corrosion is a major cause of degradation of reinforced concrete infrastructure. While the binding of chloride ions (Cl) by cementitious phases is known to delay corrosion, this approach has not been systematically exploited as a mechanism to increase structural service life. Recently, Falzone et al. Read More

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http://dx.doi.org/10.1016/j.cemconres.2017.08.021DOI Listing
November 2017
15 Reads

Direct Measurements of 3D Structure, Chemistry and Mass Density During the Induction Period of CS Hydration.

Cem Concr Res 2016 Nov 4;89:14-26. Epub 2016 Aug 4.

Argonne National Laboratory, Advanced Photon Source, Argonne, Illinois, 60439, USA.

The reasons for the start and end of the induction period of cement hydration remain topic of controversy. One long-standing hypothesis is that a thin metastable hydrate forming on the surface of cement grains significantly reduces the particle dissolution rate; the eventual disappearance of this layer re-establishes higher dissolution rates at the beginning of the acceleration period. However, the importance, or even the existence, of this metastable layer has been questioned because it cannot be directly detected in most experiments. Read More

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http://dx.doi.org/10.1016/j.cemconres.2016.07.008DOI Listing
November 2016
4 Reads

Direct three-dimensional observation of the microstructure and chemistry of CS hydration.

Cem Concr Res 2016 Oct 14;88:157-169. Epub 2016 Jul 14.

Argonne National Laboratory, Center for Nanoscale Materials, Argonne, Illinois, 60439, USA.

Disagreements about the mechanisms of cement hydration remain despite the fact that portland cement has been studied extensively for over 100 years. One reason for this is that direct observation of the change in microstructure and chemistry are challenging for many experimental techniques. This paper presents results from synchrotron nano X-ray tomography and fluorescence imaging. Read More

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http://dx.doi.org/10.1016/j.cemconres.2016.07.006DOI Listing
October 2016
2 Reads
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