Handle URI:
http://hdl.handle.net/10754/599387
Title:
Preferred orientation of ettringite in concrete fractures
Authors:
Wenk, Hans-Rudolf; Monteiro, Paulo J. M.; Kunz, Martin; Chen, Kai; Tamura, Nobumichi; Lutterotti, Luca; Del Arroz, John
Abstract:
Sulfate attack and the accompanying crystallization of fibrous ettringite [Ca6Al2(OH)12(SO4) 3·26H2O] cause cracking and loss of strength in concrete structures. Hard synchrotron X-ray microdiffraction is used to quantify the orientation distribution of ettringite crystals. Diffraction images are analyzed using the Rietveld method to obtain information on textures. The analysis reveals that the c axes of the trigonal crystallites are preferentially oriented perpendicular to the fracture surfaces. By averaging single-crystal elastic properties over the orientation distribution, it is possible to estimate the elastic anisotropy of ettringite aggregates. © 2009 International Union of Crystallography.
Citation:
Wenk H-R, Monteiro PJM, Kunz M, Chen K, Tamura N, et al. (2009) Preferred orientation of ettringite in concrete fractures. J Appl Crystallogr 42: 429–432. Available: http://dx.doi.org/10.1107/S0021889809015349.
Publisher:
International Union of Crystallography (IUCr)
KAUST Grant Number:
KUS-I1-004-21
Issue Date:
15-May-2009
DOI:
10.1107/S0021889809015349
Type:
Article
ISSN:
0021-8898
Sponsors:
We acknowledge access to beamline 12.3.2 at the ALS of the LBNL and discussions with Sergio Speziale (Potsdam). This publication was based on work supported in part by award No. KUS-I1-004-21 made by the King Abdullah University of Science and Technology (KAUST) (to PJMM and HRW) and by NSF grant No. EAR 0836402. The ALS is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences Division of the US Department of Energy under contract No. DE-AC02-05CH11231 at the LBNL.
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Full metadata record

DC FieldValue Language
dc.contributor.authorWenk, Hans-Rudolfen
dc.contributor.authorMonteiro, Paulo J. M.en
dc.contributor.authorKunz, Martinen
dc.contributor.authorChen, Kaien
dc.contributor.authorTamura, Nobumichien
dc.contributor.authorLutterotti, Lucaen
dc.contributor.authorDel Arroz, Johnen
dc.date.accessioned2016-02-28T05:50:08Zen
dc.date.available2016-02-28T05:50:08Zen
dc.date.issued2009-05-15en
dc.identifier.citationWenk H-R, Monteiro PJM, Kunz M, Chen K, Tamura N, et al. (2009) Preferred orientation of ettringite in concrete fractures. J Appl Crystallogr 42: 429–432. Available: http://dx.doi.org/10.1107/S0021889809015349.en
dc.identifier.issn0021-8898en
dc.identifier.doi10.1107/S0021889809015349en
dc.identifier.urihttp://hdl.handle.net/10754/599387en
dc.description.abstractSulfate attack and the accompanying crystallization of fibrous ettringite [Ca6Al2(OH)12(SO4) 3·26H2O] cause cracking and loss of strength in concrete structures. Hard synchrotron X-ray microdiffraction is used to quantify the orientation distribution of ettringite crystals. Diffraction images are analyzed using the Rietveld method to obtain information on textures. The analysis reveals that the c axes of the trigonal crystallites are preferentially oriented perpendicular to the fracture surfaces. By averaging single-crystal elastic properties over the orientation distribution, it is possible to estimate the elastic anisotropy of ettringite aggregates. © 2009 International Union of Crystallography.en
dc.description.sponsorshipWe acknowledge access to beamline 12.3.2 at the ALS of the LBNL and discussions with Sergio Speziale (Potsdam). This publication was based on work supported in part by award No. KUS-I1-004-21 made by the King Abdullah University of Science and Technology (KAUST) (to PJMM and HRW) and by NSF grant No. EAR 0836402. The ALS is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences Division of the US Department of Energy under contract No. DE-AC02-05CH11231 at the LBNL.en
dc.publisherInternational Union of Crystallography (IUCr)en
dc.subjectConcrete fracturesen
dc.subjectElastic anisotropyen
dc.subjectEttringiteen
dc.subjectPreferred orientationen
dc.titlePreferred orientation of ettringite in concrete fracturesen
dc.typeArticleen
dc.contributor.institutionUC Berkeley, Berkeley, United Statesen
dc.contributor.institutionLawrence Berkeley National Laboratory, Berkeley, United Statesen
dc.contributor.institutionUniversita degli Studi di Trento, Trento, Italyen
kaust.grant.numberKUS-I1-004-21en
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