Effects of Surface Geometry on Water Permeation through Cracked Concrete

doi:10.3850/978-981-08-7920-4_S2-S101-cd

Effects of Surface Geometry on Water Permeation through Cracked Concrete

Shinichiro Okazaki, Isao Ujike and Hiroki Fujiwara

Department of Civil and Environmental Engineering, Ehime University, Matsuyama, Ehime, Japan.

ABSTRACT

The objective of this research was to reveal the fluid behavior under pressure gradient in corrugated and flexural surface of crack by experimental fact and numerical calculation result. In the experiment, two types of mortal specimen that has proper parallel crack or flexural surfaced crack put in the water permeation setup. The result of this experiment shows that the relation between pressure gradient and flow velocity is almost linear in the case of parallel cracked specimen. Meanwhile, in the case of flexural cracked specimen, this relation behaves non-linearly and flow velocity has peaked despite of pressure increasing especially in highpressure gradient zone. In addition, the results of 2-D numerical calculation based on the Navier-Stokes equation pursuits the tendencies of experimental result.

Keywords: Crack, Water permeation, Surface geometry.

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