Modeling mesoscale uncertainty for concrete in tension

Nathan Tregger*, David Corr, Lori Graham-Brady, Surendra Shah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Due to heterogeneities at all scales, concrete exhibits significant variability in mechanical behavior from sample to sample. An understanding of the fundamental mechanical performance of concrete must therefore be embedded in a stochastic framework. The current work attempts to address the connection between a two-dimensional concrete mesostructure and the random local material properties associated within that mesostructure. This work builds on previous work that has focused on the random configuration of concrete mesostructures. This was accomplished by developing an understanding of the effects of variations in the mortar strength and the mortar-aggregate interfacial strength in given deterministic mesostructural configurations. The results are assessed through direct tension tests that are validated by comparing experimental results of two different, pre-arranged mesostructures, with the intent of isolating the effect of local variations in strength. Agreement is shown both in mechanical property values as well as the qualitative nature of crack initiation and propagation.

Original languageEnglish (US)
Pages (from-to)347-362
Number of pages16
JournalComputers and Concrete
Volume4
Issue number5
DOIs
StatePublished - Oct 2007

Keywords

  • Aggregate-mortar interface
  • Concrete
  • Fracture mechanics
  • Generalized method of cells
  • Stochastic modeling

ASJC Scopus subject areas

  • Computational Mechanics

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