Effect of interparticle action on shear thickening behavior of cementitious composites: modeling and experimental validation

dc.contributor.author Wang, Kejin
dc.contributor.author Lu, Alan
dc.contributor.author Wang, Kejin
dc.contributor.department Civil, Construction and Environmental Engineering
dc.date.accessioned 2022-01-28T19:21:13Z
dc.date.available 2022-01-28T19:21:13Z
dc.date.issued 2020-02-17
dc.description.abstract Shear thickening is a behavior of a material that displays an increase in viscosity with increasing shear rate. Research has indicated that in self-consolidating concrete (SCC), shear thickening is primarily caused by the formation of “particle clusters” due to collisions of particles in the low yield stress of the fluid material matrix of SCC at a high flow rate. Based on this theory, a previously developed particle–fluid model was modified and applied to predict the relationship between the shear stress and shear strain rate of cementitious composites that exhibit shear thickening behavior. The rheology test results indicated no apparent shear thickening behavior was observed for SCC paste mixtures while distinct shear thickening behavior was observed when the introduced fine aggregate volume fraction increased up to 40%. The modified model showed a power function between the shear stress and shear rate that could well capture the shear thickening behavior of mortar mixtures with various aggregate volume fractions and that agreed well with the results of the experimental study. The modified model also demonstrated that aggregate particles could generate local transient particle clusters during interactions due to the particles’ varying velocities, yielding shear thickening.
dc.description.comments This article is published as Wang, Xuhao, Alan Lu, and Kejin Wang. "Effect of interparticle action on shear thickening behavior of cementitious composites: modeling and experimental validation." Journal of Sustainable Cement-Based Materials 9, no. 2 (2020): 78-93. DOI: 10.1080/21650373.2019.1692257. Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/erLKk2dv
dc.language.iso en
dc.publisher Taylor & Francis
dc.source.uri https://doi.org/10.1080/21650373.2019.1692257 *
dc.subject cementitious composite
dc.subject shear thickening
dc.subject interparticle Force
dc.subject shear stress
dc.subject.disciplines DegreeDisciplines::Engineering::Civil and Environmental Engineering
dc.subject.disciplines DegreeDisciplines::Engineering::Civil and Environmental Engineering::Structural Engineering
dc.title Effect of interparticle action on shear thickening behavior of cementitious composites: modeling and experimental validation
dc.type Article
dspace.entity.type Publication
relation.isAuthorOfPublication f9071b81-012f-4b6d-a040-9083bc33535c
relation.isOrgUnitOfPublication 933e9c94-323c-4da9-9e8e-861692825f91
File
Original bundle
Now showing 1 - 1 of 1
Name:
2020-WangKejin-EffectInterparticle.pdf
Size:
1.48 MB
Format:
Adobe Portable Document Format
Description:
Collections