UM
Characterizing rheology of fresh short fiber reinforced cementitious composite through capillary extrusion
Zhou X.; Li Z.
2005
Source PublicationJournal of Materials in Civil Engineering
ISSN08991561
Volume17Issue:1Pages:28-35
AbstractThe rheology behavior of fresh short fiber reinforced cementitious composite (SFRCC) for extrusion purpose was investigated through capillary extrusion. It was found that the classical capillary theory for single-phase fluid was not appropriate to interpret the flow behavior of fresh SFRCC due to the large pressure loss occurring at the capillary entrance and the significant slip effect happening in the capillaries. By using a set of capillaries with the same diameter but different lengths, the true shear stress was derived on the basis of Bagley's end correction while the slip effect was calibrated through a series of capillary extrusion tests with different capillary diameters. It was found that the slip velocity could be determined by the Jastrzebski model. Further studies showed that the intrinsic rheology behavior of fresh SFRCC could be modeled by the Herschel-Bulkley equation and the associated parameters could be determined through the experimental and the data interpretation method described in this paper. The fresh SFRCC flow in capillary extrusion was dominated by slip, and the velocity profile could be determined through a superposition of an internal shear flow with a plug flow. The slip layer thickness developed in the capillaries was also estimated based on the calibrated theory and experimental data. © ASCE.
KeywordCements Fiber reinforced materials Rheology Slip
DOI10.1061/(ASCE)0899-1561(2005)17:1(28)
URLView the original
Language英語
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Cited Times [WOS]:14   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
AffiliationHong Kong University of Science and Technology
Recommended Citation
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Zhou X.,Li Z.. Characterizing rheology of fresh short fiber reinforced cementitious composite through capillary extrusion[J]. Journal of Materials in Civil Engineering,2005,17(1):28-35.
APA Zhou X.,&Li Z..(2005).Characterizing rheology of fresh short fiber reinforced cementitious composite through capillary extrusion.Journal of Materials in Civil Engineering,17(1),28-35.
MLA Zhou X.,et al."Characterizing rheology of fresh short fiber reinforced cementitious composite through capillary extrusion".Journal of Materials in Civil Engineering 17.1(2005):28-35.
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