Search
MODELLING OF CONCRETE FRACTURE AT AGGREGATE LEVEL USING DEM BASED ON X-RAY mu CT IMAGES OF INTERNAL STRUCTURE
Abstract
The paper describes two-dimensional meso-scale numerical results of fracture in notched concrete beams under quasi-static three-point bending. Concrete was modelled as a random heterogeneous 4-phase material composed of aggregate particles, cement matrix, interfacial transitional zones (ITZs) and air voids. As a numerical approach, the discrete element method (DEM) was used. The concrete micro-structure in calculations was directly taken from real concrete specimens based on 3D x-ray micro-computed tomography images and 2D images by the scanning electron microscope (SEM). Attention was paid to the shape of a fracture zone between aggregate grains. In addition, the effect of properties of ITZs on fracture was studied.
Authors (2)
Cite as
Full text
full text is not available in portal
Keywords
Details
- Category:
- Conference activity
- Type:
- materiały konferencyjne indeksowane w Web of Science
- Title of issue:
- IV International Conference on Particle-based Methods (PARTICLES 2015) strony 343 - 354
- Language:
- English
- Publication year:
- 2015
- Bibliographic description:
- Nitka M., Tejchman-Konarzewski A..: MODELLING OF CONCRETE FRACTURE AT AGGREGATE LEVEL USING DEM BASED ON X-RAY mu CT IMAGES OF INTERNAL STRUCTURE, W: IV International Conference on Particle-based Methods (PARTICLES 2015), 2015, INT CENTER NUMERICAL METHODS ENGINEERING,.
- Verified by:
- Gdańsk University of Technology
seen 128 times