Change search
ReferencesLink to record
Permanent link

Direct link
Uniformity of lime-cement columns for deep mixing: A field study
Tyréns AB, Stockholm, Sweden.ORCID iD: 0000-0001-9615-4861
2005 (English)In: Ground Improvement, ISSN 1365-781X, Vol. 9, no 1, 1-15 p.Article in journal (Refereed) Published
Abstract [en]

A field study of the mixing process of lime-cement columns for deep mixing has been carried out at a test site in Håby, Sweden. The study aimed to investigate the influence on the stabilisation effect and the coefficient of variation for excavated columns, when a number of factors related to the installation process were varied. The influencing factors investigated were the retrieval rate, number of mixing blades, rotational speed, air pressure in the storage tank, and diameter of the binder outlet hole. A large number of hand-operated penetrometer tests were carried out on the excavated column cross-sections. Statistical multifactor analyses were used to evaluate the influence on the stabilisation effect and the coefficient of variation of the varied factors. The results showed that the retrieval rate and the number of mixing blades were found to have a significant effect. The effect of rotational speed and the diameter of the outlet hole were found to be insignificant. The field study showed that the strength and deformation properties of the soil and the upper pair of mixing blades, with respect to the binder outlet hole, had a major influence on the binder dispersion over the column cross-section. The blade rotation number can be used as an indirect value of the mixing work and can be used as a measure of the mixing tool effectiveness.

Place, publisher, year, edition, pages
Thomas Telford, 2005. Vol. 9, no 1, 1-15 p.
Keyword [en]
ANOVA, Deep mixing, Field test, Influencing factors, Lime-cement columns, Mixing process
National Category
Geotechnical Engineering
URN: urn:nbn:se:kth:diva-64559DOI: 10.1680/grim. diva2:483146
QC 20120220Available from: 2012-01-24 Created: 2012-01-24 Last updated: 2012-02-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Larsson, Stefan
In the same journal
Ground Improvement
Geotechnical Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 72 hits
ReferencesLink to record
Permanent link

Direct link