Abstract
This study investigates the simulation of moisture transport in concrete under compressive damage using the 3D RBSM Conduit model. The model combines stress-strain responses from concrete compression experiments with detailed crack data, providing a realistic representation of crack development under varying load conditions. By implementing both unlubricated and lubricated compression tests, different failure modes were observed, influencing penetration patterns. Simulations show that the distribution of cracks significantly accelerates moisture penetration within the concrete. Notably, uniformly distributed cracks, typical of lubricated tests, facilitate deeper and faster moisture transport compared to more localized cracks observed in unlubricated tests. This study validates the effectiveness of the 3D RBSM Conduit model in integrating mechanical simulations with moisture transport simulations, offering theoretical and practical insights for understanding and mitigating moisture-induced deterioration in concrete.
Keywords
moisture transport, 3D RBSM, conduit model, mechanical-transport model coupling.
DOI
10.5703/1288284318099
Recommended Citation
Ren, Dawei and Nagai, Kohei, "3D RBSM Conduit Model for Simulating Moisture Transport in Compressively Damaged Concrete" (2025). International Conference on Durability of Concrete Structures. 5.
https://docs.lib.purdue.edu/icdcs/2025/cms/5
3D RBSM Conduit Model for Simulating Moisture Transport in Compressively Damaged Concrete
This study investigates the simulation of moisture transport in concrete under compressive damage using the 3D RBSM Conduit model. The model combines stress-strain responses from concrete compression experiments with detailed crack data, providing a realistic representation of crack development under varying load conditions. By implementing both unlubricated and lubricated compression tests, different failure modes were observed, influencing penetration patterns. Simulations show that the distribution of cracks significantly accelerates moisture penetration within the concrete. Notably, uniformly distributed cracks, typical of lubricated tests, facilitate deeper and faster moisture transport compared to more localized cracks observed in unlubricated tests. This study validates the effectiveness of the 3D RBSM Conduit model in integrating mechanical simulations with moisture transport simulations, offering theoretical and practical insights for understanding and mitigating moisture-induced deterioration in concrete.
