The physico-mechanical stability of C-S-H/polyaniline nanocomposites

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DOIResolve DOI: http://doi.org/10.1617/s11527-013-0168-4
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TypeArticle
Journal titleMaterials and Structures/Materiaux et Constructions
ISSN1359-5997
Pages19; # of pages: 9
AbstractThe formation and characterization of various types of organically modified C -S -H-based nanocomposites have recently been investigated. The engineering properties of this class of cementitious materials, however, have rarely been studied. The current work examines a new approach to the assessment of the mechanical performance of C -S -H/polyaniline nanocomposites prepared in situ using C -S -H systems having C/S ratios of 0.8 and 1.2. Test methods including X-ray diffraction and dynamic mechanical analysis were employed in order to evaluate the physical and mechanical stability of these polymer-modified C -S -H nanocomposites. The variations in the 002 basal spacing, storage modulus (E′) and internal friction (tan δ) of the C -S -H/polyaniline nanocomposites were examined upon the incremental removal of the interlayer water. It was suggested that the polyaniline molecules may reinforce the C -S -H lamellar structure as indicated by the magnitude of the decrease in the 002 basal-spacing during the dehydration. Moreover, the initial DMA response of the C -S -H/polyaniline nanocomposites appears to be improved. © 2013 RILEM.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21270724
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Record identifier849e782a-dad6-4f56-a211-fc175cabf4b7
Record created2014-02-17
Record modified2016-05-09
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