On the decay of strength in Guilin red clay with cracks
In order to research the effect of cracks in red clay on shear strength through dry-wet cycle test, the experimenters used imaging software and a mathematical model to determine fractal dimension and crack ratio of surface cracks in red clay in Guilin, China. After each dry-wet cycle, direct shear...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2015-10-01
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| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero34/numero_34_art_66.pdf |
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| Summary: | In order to research the effect of cracks in red clay on shear strength through dry-wet cycle test, the
experimenters used imaging software and a mathematical model to determine fractal dimension and crack ratio
of surface cracks in red clay in Guilin, China. After each dry-wet cycle, direct shear tests were carried out on the
sample, and such variables as matrix suction on the crack propagation process of red clay were analyzed. The
mechanics model was established and obtained the critical condition of soil cracks. The results show that with
the increase in the number of dry-wet cycles the shear strength of the samples would decrease. But the rule of
shear strength of sample 3 is slightly different from samples 1 and 2. The shear strength of red clay has a good
correlation with fractal dimension and crack ratio, which could be an identification index of the strength of red
clay |
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| ISSN: | 1971-8993 1971-8993 |