MESOSCALE SIMULATION OF DAMAGE FOR MORTAR AND CONCRETE DURING FREEZE-THAW CYCLES
As one kind of porous medium, even without external loading, concrete material is still possible to be damaged by the internal pore pressures, such as hydraulic, crystallization and cryosuction pressures during freezing and thawing cycles (FTC).In this paper, a mesoscale model using Ridged Body Spring Method (RBSM) is developed to simulate the deformation behaviors.On one hand, the macroscale material is divided into small ridged elements in mesoscale; on the other hand, the microscale internal pore pressures are also treated as average values in mesoscale based on poromechanical theories.The constitutive relation is also developed to reflect deformation compatibility between porous body and ice-liquid-system.Finally, the internal cracking and residual deformation are simulated for mortar and concrete using RBSM, compared with previous experimental data and found in a good agreement.
Fuyuan Gong Yi Wang Tamon Ueda Dawei Zhang
Civil Engineering,Hokkaido University,Japan Civil Engineering,Zhejiang University,China
国际会议
The Fourth RILEM International Symposium on Concrete Modelling (CONMOD 2014)(第四届RILEM混凝土材料建模国际会议)
北京
英文
479-486
2014-10-12（万方平台首次上网日期，不代表论文的发表时间）