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Viscosity prediction of cement-filler suspensions using interference model: A route for binder efficiency enhancement
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
2016 (English)In: Cement and Concrete Research, ISSN 0008-8846, E-ISSN 1873-3948, Vol. 84, 8-19 p.Article in journal (Refereed) Published
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Abstract [en]

Producing cementitious materials with low CO2 emissions is a key challenge for sustainability, considering the increasing demand for cement and the inefficacy of current industrial solutions. Improving the efficiency of binder use is mandatory, so that binder replacement by inert fillers with lower environmental loads is an alternative, which demands careful control of the rheological behaviour to decrease the water demand of pastes. Dispersion and packing models are well known, but other less explored parameters of raw materials (surface area, density, roughness) and paste (water content, distance between particles) determine the interaction among particles, affecting the paste's rheological behaviour. The aim of this paper is to assess the influence of inert fillers on the rheological behaviour of cementitious pastes. A range of 12 inert fillers with varied aspects was evaluated. The results indicated a good agreement between the Casson viscosity and the interference parameter calculated using the interference model.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 84, 8-19 p.
Keyword [en]
Cement paste (D), Filler (D), Modelling, Particle size distribution (B), Rheology (A)
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-186935DOI: 10.1016/j.cemconres.2016.02.012ISI: 000375362800002Scopus ID: 2-s2.0-84960358166OAI: oai:DiVA.org:kth-186935DiVA: diva2:929279
Note

QC 20160518

Available from: 2016-05-18 Created: 2016-05-16 Last updated: 2016-05-30Bibliographically approved

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