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Bleeding and bleeding measurements of cement-based grout
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.ORCID iD: 0000-0002-8956-611X
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
2012 (English)In: Grout2012, 2012Conference paper, Published paper (Refereed)
Abstract [en]

Grouting is a common method of sealing rock in various geotechnical projects, and the bleeding of cement-based grout is an often-discussed issue. Current cylinder measuring methods for the estimation of the bleeding of cement-based grouts originate from the measurement of the bleeding of cement pastes used in ordinary building practices. Whether bleeding measured with these methods is relevant to bleeding in small fractures in rocks is one of the main questions in this study. This study showed that the bleeding process is very complex and is governed by different physical and chemical processes like sedimentation, consolidation, flocculation and hydration. It also showed that consolidation has little influence on bleeding in fractures. Bleeding in fractures is mainly the result of sedimentation. In addition, the study showed that the results measured using cylinder methods are not relevant for the bleeding of grout in fractures and that voids in the fractures caused by bleeding can be refilled during grouting. The bleeding should occur to a considerably lower extent in rock fractures, if it occurs at all. © 2012 American Society of Civil Engineers.

Place, publisher, year, edition, pages
2012.
Series
Geotechnical special publication, ISSN 08950563
National Category
Civil Engineering Geotechnical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-75021DOI: 10.1061/9780784412350.0143Scopus ID: 2-s2.0-84888367912OAI: oai:DiVA.org:kth-75021DiVA, id: diva2:490314
Conference
4th International Conference on Grouting and Deep Mixing, Marriott New Orleans, New Orleans, LA, February 16-18, 2012
Note

QC 20121218

QC 20191021

Available from: 2012-02-04 Created: 2012-02-04 Last updated: 2019-10-21Bibliographically approved

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