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A platform for research: civil engineering, architecture and urbanism
Phase-resolved strain measurements in hydrated ordinary Portland cement using synchrotron X-rays
X-ray diffraction methods developed for the determination of residual stress states in crystalline materials have been applied to study residual strains and strains because of mechanical loading of ordinary portland cement paste. Synchrotron X-rays were used to make in situ measurements of interplanar spacings in the calcium hydroxide (CH) phase of hydrated neat portland cement under uniaxial compression. The results indicate that strains on the order of 1/100000 can be resolved providing an essentially new technique by which to measure the phase-resolved mesoscale mechanical behavior of cement under different loading conditions. Evaluation of these strain data in view of published elastic parameters for CH suggests that the CH carries a large fraction of the applied stress and that plastic interactions with the matrix are notable.
Phase-resolved strain measurements in hydrated ordinary Portland cement using synchrotron X-rays
X-ray diffraction methods developed for the determination of residual stress states in crystalline materials have been applied to study residual strains and strains because of mechanical loading of ordinary portland cement paste. Synchrotron X-rays were used to make in situ measurements of interplanar spacings in the calcium hydroxide (CH) phase of hydrated neat portland cement under uniaxial compression. The results indicate that strains on the order of 1/100000 can be resolved providing an essentially new technique by which to measure the phase-resolved mesoscale mechanical behavior of cement under different loading conditions. Evaluation of these strain data in view of published elastic parameters for CH suggests that the CH carries a large fraction of the applied stress and that plastic interactions with the matrix are notable.
Phase-resolved strain measurements in hydrated ordinary Portland cement using synchrotron X-rays
Phasenaufgelöste Verspannungsmessungen in hydradisiertem, gewöhnlichem Portlandzement unter Verwendung von synchrotronen Röntgenstrahlen
Biernacki, J.J. (author) / Parnham, C.J. (author) / Watkins, T.R. (author) / Hubbard, C.R. (author) / Bai, J. (author)
Journal of the American Ceramic Society ; 89 ; 2853-2859
2006
7 Seiten, 4 Bilder, 3 Tabellen, 23 Quellen
Article (Journal)
English
Phase equilibria of hydrated Portland cement
| Elsevier | 2004
Phase equilibria of hydrated Portland cement
| Tema Archive | 2005
Phase equilibria of hydrated Portland cement
| Online Contents | 2005
Phase equilibria of hydrated Portland cement
| British Library Online Contents | 2005