000004625 001__ 4625
000004625 005__ 20141119144539.0
000004625 04107 $$aeng
000004625 046__ $$k2002-06-02
000004625 100__ $$aBirgisson, B.
000004625 24500 $$aSIMULATION OF THE CRACKING BEHAVIOR OF ASPHALT MIXTURES USING RANDOM ASSEMBLIES OF DISPLACEMENT DISCONTINUITY BOUNDARY ELEMENTS

000004625 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004625 260__ $$bColumbia University in the City of New York
000004625 506__ $$arestricted
000004625 520__ $$2eng$$aAn understanding of the cracking behavior of hot mix asphalt mixtures provides an important basis for the development of mixtures with improved cracking resistance and pavement cracking performance models. This paper describes the use of random assemblies of displacement discontinuity boundary elements to model the behavior of asphalt mixtures. These random assemblies of boundary elements form particles of varying sizes, which are arranged to simulate the discrete nature of mixtures. To account for the aggregate and mastic properties, each particle is connected to other particles by specifying the cohesion, friction, and tensile properties of the material between particles. The crack initiation and crack growth are simulated using two distinct crack growth laws, based on sequential and parallel crack growth rules. Cracks are allowed to grow either along particle boundaries or through internal weak paths inside particles. A series of simulations were performed of the load-deformation and cracking behavior of a typical 19.0-mm nominal maximum aggregate size mixture commonly used by the Florida Department of Transportation. The effects of crack growth rules, particle size, and localization to geometric effects were studied. In summary, the method presented appears to provide a valuable tool for studying the mechanistic behavior of asphalt mixtures.

000004625 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004625 653__ $$aboundary elements, displacement discontinuity method, tessellations, crack growth, hot mix asphalt

000004625 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004625 720__ $$aBirgisson, B.$$iSoranakom, C.$$iNapier, John A.L.$$iRoque, R.
000004625 8560_ $$ffischerc@itam.cas.cz
000004625 8564_ $$s440386$$uhttp://invenio.itam.cas.cz/record/4625/files/079.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004625 962__ $$r4594
000004625 980__ $$aPAPER