000004922 001__ 4922
000004922 005__ 20141119144605.0
000004922 04107 $$aeng
000004922 046__ $$k2002-06-02
000004922 100__ $$aGuler, Murat
000004922 24500 $$aA POROUS ELASTOPLASTIC COMPACTION MODEL FOR ASPHALT MIXTURES WITH PARAMETER ESTIMATION ALGORITHM

000004922 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004922 260__ $$bColumbia University in the City of New York
000004922 506__ $$arestricted
000004922 520__ $$2eng$$aEstimation of compaction energy to reach a certain field density is essential when predicting construction costs for asphalt concrete pavements. A compaction model can be used to predict the required compaction energy and optimize the design requirements for field conditions. A mechanical model is developed to simulate laboratory compaction of asphalt mixture specimens. Gurson-Tvergaard porous material model with elastoplastic matrix is assumed to describe compaction of an uniaxial cylindrical specimen under a prescribed compaction pressure and cyclic shear strain induced by the Superpave Gyratory Compactor. Plastic strains are integrated from an incremental elastoplastic constitutive equation. Three model constants are estimated to determine measured deflections by means of Levenberg-Marquardt parameter estimation algorithm. Statistical correlations are constructed to evaluate effects of mixture properties on the estimated model constants. The proposed constitutive model accurately predicts the volume change of specimens undergoing continuous gyratory compaction. Estimated model constants proved strong correlations with mixture volumetric properties.

000004922 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004922 653__ $$aGurson-Tvergaard model, porous material, elastoplastic matrix, asphalt mixture, gradation, air void, Levenberg-Marquardt.

000004922 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004922 720__ $$aGuler, Murat$$iBosscher, Peter J.$$iPlesha, Michael E.
000004922 8560_ $$ffischerc@itam.cas.cz
000004922 8564_ $$s353422$$uhttp://invenio.itam.cas.cz/record/4922/files/543.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004922 962__ $$r4594
000004922 980__ $$aPAPER