Characteristics and engineering performance of C-S-H/aminobenzoic acid composite systems

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DOIResolve DOI: http://doi.org/10.3151/jact.13.415
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TypeArticle
Journal titleJournal of Advanced Concrete Technology
ISSN1346-8014
Volume13
Issue9
Pages415420; # of pages: 6
SubjectCalcium; Durability; Fourier transform infrared spectroscopy; adsorption; Hydration; Powders; Silicates; X ray diffraction; 4-aminobenzoic acid; Micro-indentation technique; Nitrogen
AbstractCalcium-silicate-hydrate/aminobenzoic acid (C-S-H/ABA) composite systems were synthetized and characterized for the first time. Each of 3- or 4-aminobenzoic acid with a concentration of 0.01 mol. per mol. of Ca was added to the C-S-H preparations during their hydration. The C-S-H/ABA systems were filtered and dried after three weeks. These were, then, characterized by X-ray diffraction, Fourier transform infrared spectroscopy and nitrogen adsorption analysis. Porous bodies were also prepared from C-S-H/ABA compacted powders and used for the length-change and mass-change measurements in different test solutions. In addition, the microindentation technique was used to determine the creep modulus and hardness of the compacted samples. It is suggested that the C-S-H/ABA systems had improved durability and enhanced mechanical properties compared to the phase pure C-S-H reference materials. The influence of the 3- and 4-aminobenzoic acid on durability factors was similar. The C-S-H/3-ABA, however, had superior mechanical performance.
Publication date
LanguageEnglish
AffiliationConstruction; National Research Council Canada
Peer reviewedYes
NPARC number21277060
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Record identifierf53bd6fb-82f4-46ab-abdb-108f1d766a43
Record created2015-11-10
Record modified2017-04-05
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