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Rheological Properties of Cement-Based Grouts Determined by Different Techniques
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: 0000-0002-6851-4839
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-1365-8552
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-8360-9051
2014 (English)In: Engineering, ISSN 1947-3931, E-ISSN 1947-394X, Vol. 6, no 5, p. 217-229Article in journal (Refereed) Published
Abstract [en]

The rheological properties of cement-based grouts containing talc or palygorskite were investigated for optimizing fluidity and quick strengthening at injection. The fluidity controls the ability of grout to penetrate fractures and can be determined by pipe flow tests, Marsh funnel tests, mini-slump cone tests and rheometer tests. The grouts were 1) Talc for fluidity and strength by reacting with cement, 2) Palygorskite (attapulgite) for early gelation by being thixotropic, and 3) Powdered quartz for chemical integrity. The freshly prepared grouts behaved as Bingham fluids with viscosities from 0.151 to 0.464 Pas and yield stresses 5.2 Pa to 36.7 Pa. Statistical analysis of the flow test data converted Marsh flow time into viscosity. The pipe flow tests gave 26.5% higher values than the viscometer for grout with Portland cement and talc, and about 13.7% lower than the viscometer data for the grout with low-pH cement and talc. The big Marsh funnel gave valuesdiffering by 5.2% - 5.3% from those of the viscometer for grout with talc and Portland, and Merit 5000 cements. For grout with palygorskite the viscosity was at least twice that of the other grouts. Grout fluidity was positively affected by talc and negatively by palygorskite and early cement hydration

Place, publisher, year, edition, pages
2014. Vol. 6, no 5, p. 217-229
National Category
Infrastructure Engineering Geotechnical Engineering Fluid Mechanics and Acoustics
Research subject
Structural Engineering; Soil Mechanics; Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-8666DOI: 10.4236/eng.2014.65026Local ID: 7331101b-0624-4af1-8099-b54c7b9fc3cdOAI: oai:DiVA.org:ltu-8666DiVA, id: diva2:981604
Note
Validerad; 2014; 20140403 (mohhat)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-06-26Bibliographically approved

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Hatem, MohammedPusch, RolandKnutsson, SvenHellström, J. Gunnar I.

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