Mesoscale Study on Dilation Behavior of Plain Concrete under Axial Compression

The dilation of concrete in the radial direction is crucial understanding failure process and key to predicting confining level passively confined concrete. To better understand this problem, we established a mesoscale model by considering random distribution coarse aggregate different properties between mortar model’s validity was demonstrated comparing with stress–strain curves code lateral–axial strain test. simulation results show that lateral non-uniformly distributed along specimen height circumferential sections. Moreover, deformation mainly occurs middle part ranging from 3/8 5/8. strength influences stress ratio at maximum compressive strain, while it slightly zero volumetric strain. secant about 0.5 as reaches Compared simulation, relationship axial proposed Teng Binici shows excellent performance on trend prediction plain