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Centrifuge validation of soil improvement prediction using the WAK test analysis.

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Title: Centrifuge validation of soil improvement prediction using the WAK test analysis.
Authors: Parvizi, M.1, Merrifield, C. M.1
Source: Ground Improvement. Mar2004, Vol. 8 Issue 1, p33-37. 5p.
Subjects: Soil compaction, Soil stabilization, Stress waves, Machine separators, Field research, Building foundations, Soil mechanics
Abstract (English): The development of the low-energy dynamic compaction process for modest but rapid improvement of the soil properties of foundation soils has provided a viable and economical alternative to traditional ground improvement methods for derelict land. The concept of using the WAK (Wave Activated Stiffness (K) test) to monitor the degree of improvement during the process has prompted a rigorous programme of centrifuge modelling to validate the method. Results from field tests and centrifuge modeling have shown that both the subgrade reaction modulus of the foundation soil and the system damping derived from the analysis using different diameter footings agree well with theoretical values. This corroboration suggests that the depth of improvement may also be predicted given the footing diameter used to compact the foundation soil, and that the effective depth of improvement is of the order of 1.25 times the footing diameter for all footing diameters. [ABSTRACT FROM AUTHOR]
Abstract (French): Le développement d'un processus de compaction dynamique à faible énergie donnant une amélioration modeste mais rapide des propriétés des sols de fondations offre une alternative valable et économique aux méthodes traditionelles d'amélioration des terrains abandonnés. Le concept d'utiliser l'essai WAK (essai de rigidité activé par onde) pour contrôler le degré d'amélioration tout au long du processus a amené un rigoureux programme de modélisation centrifuge pour valider la méthode. Les résultats tirés des essais sur le terrain et des modèles centrifuges ont montré que le module de réaction de fond de forme du sol de fondation et la compaction du système dérivée de l'analyse utilis ant divers diamètres de pieds correspond bien aux valeurs théoriques. Cette corroboration suggère que la profondeur d'amélioration peut aussi être prédite si l'on connaît le diamètre du pied utilisé pour compacter le sol de fondation et sachant que la profondeur d'amélioration est de l'ordre de 1,25 fois le diamètre du pied pour tous les diamètres de pied. [ABSTRACT FROM AUTHOR]
Copyright of Ground Improvement is the property of Thomas Telford Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 18143958
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Centrifuge validation of soil improvement prediction using the WAK test analysis.
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  Data: <searchLink fieldCode="AR" term="%22Parvizi%2C+M%2E%22">Parvizi, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Merrifield%2C+C%2E+M%2E%22">Merrifield, C. M.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Ground+Improvement%22">Ground Improvement</searchLink>. Mar2004, Vol. 8 Issue 1, p33-37. 5p.
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  Data: <searchLink fieldCode="DE" term="%22Soil+compaction%22">Soil compaction</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+stabilization%22">Soil stabilization</searchLink><br /><searchLink fieldCode="DE" term="%22Stress+waves%22">Stress waves</searchLink><br /><searchLink fieldCode="DE" term="%22Machine+separators%22">Machine separators</searchLink><br /><searchLink fieldCode="DE" term="%22Field+research%22">Field research</searchLink><br /><searchLink fieldCode="DE" term="%22Building+foundations%22">Building foundations</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+mechanics%22">Soil mechanics</searchLink>
– Name: Abstract
  Label: Abstract (English)
  Group: Ab
  Data: The development of the low-energy dynamic compaction process for modest but rapid improvement of the soil properties of foundation soils has provided a viable and economical alternative to traditional ground improvement methods for derelict land. The concept of using the WAK (Wave Activated Stiffness (K) test) to monitor the degree of improvement during the process has prompted a rigorous programme of centrifuge modelling to validate the method. Results from field tests and centrifuge modeling have shown that both the subgrade reaction modulus of the foundation soil and the system damping derived from the analysis using different diameter footings agree well with theoretical values. This corroboration suggests that the depth of improvement may also be predicted given the footing diameter used to compact the foundation soil, and that the effective depth of improvement is of the order of 1.25 times the footing diameter for all footing diameters. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label: Abstract (French)
  Group: Ab
  Data: Le développement d'un processus de compaction dynamique à faible énergie donnant une amélioration modeste mais rapide des propriétés des sols de fondations offre une alternative valable et économique aux méthodes traditionelles d'amélioration des terrains abandonnés. Le concept d'utiliser l'essai WAK (essai de rigidité activé par onde) pour contrôler le degré d'amélioration tout au long du processus a amené un rigoureux programme de modélisation centrifuge pour valider la méthode. Les résultats tirés des essais sur le terrain et des modèles centrifuges ont montré que le module de réaction de fond de forme du sol de fondation et la compaction du système dérivée de l'analyse utilis ant divers diamètres de pieds correspond bien aux valeurs théoriques. Cette corroboration suggère que la profondeur d'amélioration peut aussi être prédite si l'on connaît le diamètre du pied utilisé pour compacter le sol de fondation et sachant que la profondeur d'amélioration est de l'ordre de 1,25 fois le diamètre du pied pour tous les diamètres de pied. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ground Improvement is the property of Thomas Telford Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1680/grim.8.1.33.36365
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 5
        StartPage: 33
    Subjects:
      – SubjectFull: Soil compaction
        Type: general
      – SubjectFull: Soil stabilization
        Type: general
      – SubjectFull: Stress waves
        Type: general
      – SubjectFull: Machine separators
        Type: general
      – SubjectFull: Field research
        Type: general
      – SubjectFull: Building foundations
        Type: general
      – SubjectFull: Soil mechanics
        Type: general
    Titles:
      – TitleFull: Centrifuge validation of soil improvement prediction using the WAK test analysis.
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            NameFull: Parvizi, M.
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            NameFull: Merrifield, C. M.
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            – D: 01
              M: 03
              Text: Mar2004
              Type: published
              Y: 2004
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            – TitleFull: Ground Improvement
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