MESOSCALE SIMULATION OF DAMAGE FOR MORTAR AND CONCRETE DURING FREEZE-THAW CYCLES

Author(s): Fuyuan Gong, Yi Wang, Tamon Ueda and Dawei Zhang
Book Title: RILEM International Symposium on Concrete Modelling - CONMOD 2014
Editor: Kefei Li, Peiyu Yan and Rongwei Yang
ISBN: 978-2-35158-139-1
e-ISBN: 978-2-35158-140-7
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 478-485
Total Pages: 8
Language: English

Abstract: 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.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00