Estimation of water flow through cracked concrete under load

Corina Maria Aldea, Masoud Ghandehari, Surendra P. Shah, Alan Karr

Research output: Contribution to journalArticle

Abstract

The goal of this research is to study the relationship between cracking and water permeability of normal-strength concrete under load and to compare the experimental results with theoretical models. A feedback-controlled wedge splitting test was used to generate width-controlled cracks. Speckle interferometry was used to record the cracking history. Water permeability of the loaded specimens was evaluated by a low-pressure water permeability test at the designed crack mouth opening displacements (CMODs). Water permeability results are compared with those previously obtained for unloaded specimens for which cracks were induced by a feedback-controlled splitting tension test. The experimental results indicate tliat water permeability of cracked material significantly increases with increasing crack width. The flow for the same cracking level is repeatable regardless of the procedure used for inducing the cracks. No direct relationship between water flow and crack length was observed, whereas clear relationships exist bet\veen CMOD or crack area and flow characteristics. Experimentally measured flow is compared to theoretical models of flow through cracked rocks with parallel walls and a correction factor accounting for the tortuosity of the crack is determined. Calculated flow through cracks induced by wedge-splitting test provides an acceptable approximation of the measured flow.

LanguageEnglish (US)
Pages567-575
Number of pages9
JournalACI Structural Journal
Volume97
Issue number5
StatePublished - 2000

Fingerprint

Flow of water
Concretes
Cracks
Water
Feedback
Speckle
Interferometry
Rocks

Keywords

  • Coefficient of permeability to water
  • Flow
  • Shrinkage cracking
  • Wedge

ASJC Scopus subject areas

  • Building and Construction
  • Civil and Structural Engineering
  • Materials Science(all)

Cite this

Aldea, C. M., Ghandehari, M., Shah, S. P., & Karr, A. (2000). Estimation of water flow through cracked concrete under load. ACI Structural Journal, 97(5), 567-575.

Estimation of water flow through cracked concrete under load. / Aldea, Corina Maria; Ghandehari, Masoud; Shah, Surendra P.; Karr, Alan.

In: ACI Structural Journal, Vol. 97, No. 5, 2000, p. 567-575.

Research output: Contribution to journalArticle

Aldea, CM, Ghandehari, M, Shah, SP & Karr, A 2000, 'Estimation of water flow through cracked concrete under load', ACI Structural Journal, vol. 97, no. 5, pp. 567-575.
Aldea CM, Ghandehari M, Shah SP, Karr A. Estimation of water flow through cracked concrete under load. ACI Structural Journal. 2000;97(5):567-575.
Aldea, Corina Maria ; Ghandehari, Masoud ; Shah, Surendra P. ; Karr, Alan. / Estimation of water flow through cracked concrete under load. In: ACI Structural Journal. 2000 ; Vol. 97, No. 5. pp. 567-575.
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