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Enhancement of Workability of Cement-Poor Concrete by Optimizing Paste Content
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-6790-2653
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-1365-8552
2014 (English)In: Engineering, ISSN 1947-3931, E-ISSN 1947-394X, Vol. 6, no 13, p. 869-876, article id 4Article in journal (Refereed) Published
Abstract [en]

This study describes the performance of concrete in fresh state, intended for sealing deep boreholes in the host rock of radioactive repositories. Set of different paste volumes, combinations of water-to-powder ratios and fine aggregate contents have been performed within the frame of this study. The main objective was to search for tendencies, logical connections and phenomena that occur for different combination of materials regarding the fluidity and segregation and mainly the effect from the (paste) or fine aggregate content. It shall be pointed out that this investigation is a suggestion on how concrete can be optimized using two simple test methods based on changing the paste content. The results highlighted the importance of having sufficient amounts of filler and cement paste for separate and carry larger particles, which gives the concrete good workability and fluidity at casting. It was concluded that the slump behaviors can be optimized based on the adjustments of the superplastisizer dosage.

Place, publisher, year, edition, pages
2014. Vol. 6, no 13, p. 869-876, article id 4
National Category
Infrastructure Engineering Geotechnical Engineering
Research subject
Structural Engineering; Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-7661DOI: 10.4236/eng.2014.613080Local ID: 610ca7f3-1066-464b-b5d2-f2619dac9dadOAI: oai:DiVA.org:ltu-7661DiVA, id: diva2:980551
Note
Validerad; 2014; 20141209 (mohhat)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Hatem, MohammedAl-Ansari, NadhirKnutsson, Sven

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