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Analysis of shear rate inside a concrete truck mixer

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dc.contributor Háskólinn í Reykjavík
dc.contributor Reykjavik University
dc.contributor.author Wallevik, Jon Elvar
dc.contributor.author Wallevik, Olafur Haralds
dc.date.accessioned 2020-03-12T13:17:59Z
dc.date.available 2020-03-12T13:17:59Z
dc.date.issued 2017-05
dc.identifier.citation Wallevik, J. E., & Wallevik, O. H. (2017). Analysis of shear rate inside a concrete truck mixer. CEMENT AND CONCRETE RESEARCH, 95, 9–17. https://doi.org/10.1016/j.cemconres.2017.02.007
dc.identifier.issn 0008-8846
dc.identifier.issn 1873-3948 (eISSN)
dc.identifier.uri https://hdl.handle.net/20.500.11815/1591
dc.description.abstract In addition to the mixing energy applied to the fresh concrete (i.e. shearing during mixing), the shear history after mixing is also important. This applies especially to binder rich concretes like the different types of high performance concrete (HPC). With this in mind, the shear rate is analyzed inside a drum of a concrete truck mixer. The objective is to better understand the effect of transport of fresh concrete, from the ready mix plant to the building site. The analysis reveals the effect of different drum charge volume and drum rotational speed. Also, the effect of yield stress and plastic viscosity is investigated. The work shows that the shear rate decreases in an exponential manner with increasing drum charge volume. It is also shown that for a given drum speed, the shear rate decreases both with increasing plastic viscosity and yield stress.
dc.description.sponsorship This work has been funded by the Icelandic Centre for Research - RANNIS [grant numbers 163382-051, 1006100202], Norcem AS (Heidelberg Cement Group) and ReadyMix Abu Dhabi.
dc.format.extent 9-17
dc.language.iso en
dc.publisher Elsevier BV
dc.rights info:eu-repo/semantics/openAccess
dc.subject Truck mixer
dc.subject Shear rate
dc.subject Fresh concrete
dc.subject Rheology
dc.subject Finite volume method
dc.subject Fluid mechanics
dc.subject Fluid dynamics
dc.subject Cement
dc.subject Steinsteypa
dc.subject Sement
dc.subject Straumfræði
dc.subject Hreyfifræði
dc.subject Bútaaðferð
dc.title Analysis of shear rate inside a concrete truck mixer
dc.type info:eu-repo/semantics/article
dcterms.license This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
dc.description.version "Peer Reviewed"
dc.identifier.journal Cement and Concrete Research
dc.identifier.doi 10.1016/j.cemconres.2017.02.007
dc.contributor.school Tækni- og verkfræðideild (HR)
dc.contributor.school School of Science and Engineering (RU)

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