Damage Parameters of Rocks Degraded by Chemical Effects of Salt Water
Degraded rock samples were prepared to investigate the effect of degradation on the mechanical behavior observed under an uniaxial compression test. The samples of Sm(a)land granite were obtained from (A)sp(o) HRL in Sweden. The samples were degraded by submerging in 10％ saline water (10％ NaCl) for 90 days, and axial and circumferential deformations were observed. The behaviors of uniaxial deformations were investigated using an expansion damage model based on the damage mechanics theory. The damage parameters were identified from the stress-strain relation obtained from the mechanical test results. The effect of degradation was inferred by investigating the change in the damage parameters of the degraded rock. Moreover, finite element simulations based on an analytical model of the uniaxial compression test were performed using the damage parameters. As the results, it was inferred that the Sm(a)land-granite becomes more expansive material. It is, also, inferred that a localized deformation on surface of sample causes the decrease in stress.
K.Yamamoto A.Kobayashi S.Aoyama
Kyoto University Ishikawa Prefectural University
国际会议
香港
英文
1-4
2009-05-19（万方平台首次上网日期，不代表论文的发表时间）