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| Mesoscopic method for simulating the two-dimensional capillary water absorption process of concrete |
| Received:February 25, 2024 Revised:April 02, 2024 |
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| DOI：10.7511/jslx20240225001 |
| KeyWord:concrete two-dimensional capillary water absorption mesoscopic method numerical simulation sorptivity |
| Author | Institution |
| 王立成 |
大连理工大学 海岸和近海工程国家重点实验室, 大连 |
| 殷鸿杰 |
大连理工大学 海岸和近海工程国家重点实验室, 大连 |
| 邹凯 |
大连理工大学 海岸和近海工程国家重点实验室, 大连 |
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| Abstract: |
| When the local zone of a concrete member or adjacent sides of the corner position are exposed to moist environment,water will ingress into the concrete interior in the form of two-dimensional capillary absorption,which is a process distinct from one-dimensional water movement.Based on the unsaturated flow theory,in this paper a mesoscopic method for simulating the two-dimensional capillary water absorption process of concrete is developed.The numerically simulation results show that as the localized zone of concrete surface exposed to moisture source decreases,the depth of capillary water absorption decreases for the same elapsed time.However,there is an increasing tendency in the cumulative water absorption per unit area.It is also found that coarse aggregate and the interfacial transition zone(ITZ)can locally inhibit and promote the two-dimensional capillary water absorption process of concrete,respectively.With help of the numerical simulation results,the relationship between sorptivities of the one-dimensional and two-dimensional capillary absorption is established,and the interaction effect of capillary water absorption process in the corner zone of a concrete member is quantitatively investigated. |
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