Use of silica particles to improve dispersion of -COOH CNTs/carbon fibers to produce HyFRCC

dc.contributor.authorGarg, Mohit
dc.contributor.authorDas, Chandra Sekhar
dc.contributor.authorGupta, Rishi
dc.date.accessioned2020-07-10T16:57:50Z
dc.date.available2020-07-10T16:57:50Z
dc.date.copyright2020en_US
dc.date.issued2020
dc.description.abstractThe development of hybrid fiber reinforced cement composite that has high strength, scope to be 12 used as cement-based sensors has been investigated in this study by using a combination of carbon 13 fibers and carbon nanotubes (CNT) at low volume fraction. The dispersion of CNTs was enhanced 14 by using polycarboxylate based superplasticizer that resulted in a homogeneous aqueous stable 15 solution, and profoundly improved dispersion when integrated with the cementitious matrix. 16 Different siliceous additives were also incorporated into the mixes to improve the dispersion of 17 CNTs in the matrix, where micro-silica outperformed as compared to nano-silica, confirmed 18 morphologically. On the other hand, nano-silica enhanced dispersion of milled carbon fibers in the 19 aqueous state. The sensing behavior was determined by the measurement of bulk resistance of 20 mixes and the samples were subjected to compressive loading to study the strength improvement 21 with the incorporation of fibers. The experimental results reveal that hybrid combination of 22 chopped carbon fibers, micro silica, and low volume fraction of CNTs in a cementitious matrix 23 results in a stronger and durable concrete that holds the potential for sensing applications. Thus, 24 laying a strong foundation for the future of low cost smart cement based materials.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipAuthors acknowledge the financial support of NSERC (Dr. Rishi Gupta’s Discovery grant). Also, 29 support of Mitacs Globalink Program is greatly appreciated.en_US
dc.identifier.citationGarg, M., Das, C. S., & Gupta R. (2020). Use of silica particles to improve dispersion of –COOH CNTs/carbon fibers to produce HyFRCC. Construction and Building Materials, 250, 1-15. https://doi.org/10.1016/j.conbuildmat.2020.118777.en_US
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2020.118777
dc.identifier.urihttp://hdl.handle.net/1828/11922
dc.language.isoenen_US
dc.publisherConstruction and Building Materialsen_US
dc.subjectCement-based sensorsen_US
dc.subjectCarbon nanotubesen_US
dc.subjectCarbon fibersen_US
dc.subjectSilica particlesen_US
dc.subjectdispersion characteristicsen_US
dc.subjectmortaren_US
dc.subjectcompressive strengthen_US
dc.subjectsmart materialsen_US
dc.subjectsuperplasticizeren_US
dc.titleUse of silica particles to improve dispersion of -COOH CNTs/carbon fibers to produce HyFRCCen_US
dc.typePostprinten_US

Files

Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Garg_Mohit_ConstrBuildMater_2020.pdf
Size:
2.23 MB
Format:
Adobe Portable Document Format
Description:
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description: