000004811 001__ 4811
000004811 005__ 20141119144555.0
000004811 04107 $$aeng
000004811 046__ $$k2002-06-02
000004811 100__ $$aCorr, David J.
000004811 24500 $$aMICROMECHANICAL ANALYSIS OF CONCRETE WITH RANDOM MICROSTRUCTURE

000004811 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004811 260__ $$bColumbia University in the City of New York
000004811 506__ $$arestricted
000004811 520__ $$2eng$$aA model based on the moving window generalized method of cells is presented for the mechanical analysis of concrete microstructure. This model includes debonding between unlike phases to capture aggregate-cement paste interfacial cracking, a phenomenon that is accepted as a major source of nonlinearity in the stress-strain behavior of concrete. The model results in stress-strain responses that are highly dependent on the orientation of aggregate particles within the cement paste matrix. The model is calibrated to a typical concrete stress-strain curve, and used to generate equivalent material property fields for an actual concrete microstructure. Statistical analysis of the resulting data underscores a number of features of the model. The initial elastic modulus is highly dependent on the volume fraction of aggregate in concrete. The post-debonding elastic modulus is dependent on the presence of aggregate-cement paste interfaces in the direction of the applied strain. The model shows significant promise for evaluating the material properties of concrete specimens based on their individual microstructural characteristics.

000004811 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004811 653__ $$aConcrete, Microstructure, Model

000004811 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004811 720__ $$aCorr, David J.$$iGraham, Lori L.
000004811 8560_ $$ffischerc@itam.cas.cz
000004811 8564_ $$s2298884$$uhttps://invenio.itam.cas.cz/record/4811/files/370.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004811 962__ $$r4594
000004811 980__ $$aPAPER