Closure to “
            <i>Estimating Soil Moduli from Drilled Pier Load Tests</i>
            ” by Zdeněk J. Bažant, Jr. (September, 1984, Vol. 110, No. 9)

Bazant, Z.

doi:10.1061/(asce)0733-9410(1988)114:3(351)

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2000

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“…For this type of material crack growth resistance curve has been a very thoroughly studied problem [1] [2] [3] [4] [5] [6]. It is a particulate composite which consists of aggregate as a particle suspended in a hardened cement paste.…”

Section: Introductionmentioning

confidence: 99%

Stability Problem of Damage Zone Propagation in Front of the Crack for DCB Specimen of Plain Concrete

Sumarac¹

2000

Journal of the Mechanical Behavior of Materials

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It is well known that for the stability problem of crack propagation it is sufficient to have an accurate enough R-curve. In this presentation the point will be the experimental and theoretical determination of the R-curve for quasibrittle materials such as plain concrete. Theoretical consideration is based on a cohesive crack model with a softening (damage zone) which develops in the front of a crack. For this region Aifantis' gradient approach can be applied. It is shown that nonlinearity in the R-curve is a consequence of softening zone development.In experimental investigation, which is the main part of this study, special attention is paid to measure as accurately as possible the position of the crack front. To achieve this goal graphite and optical sensors are embedded in the concrete. Also the force-displacement diagram from measured values can be easily constructed. From this diagram, knowing the position of the crack front for the governing force, the resistance R-curve is obtained.

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Section: Introductionmentioning

confidence: 99%

Stability Problem of Damage Zone Propagation in Front of the Crack for DCB Specimen of Plain Concrete

Sumarac¹

2000

Journal of the Mechanical Behavior of Materials

View full text Add to dashboard Cite

show abstract

Closure to “ Estimating Soil Moduli from Drilled Pier Load Tests ” by Zdeněk J. Bažant, Jr. (September, 1984, Vol. 110, No. 9)

Cited by 1 publication

References 0 publications

Stability Problem of Damage Zone Propagation in Front of the Crack for DCB Specimen of Plain Concrete

Stability Problem of Damage Zone Propagation in Front of the Crack for DCB Specimen of Plain Concrete

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