| Download | - View final version: Fissuring from hydraulic fracture of clay soil (PDF, 1.4 MiB)
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| Author | Search for: Lefebvre, G.; Search for: Philibert, A.; Search for: Bozozuk, M.1; Search for: Pare, J. J. |
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| Affiliation | - National Research Council of Canada
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| Format | Text, Article |
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| Conference | 10th International Conference on Soil Mechanics and Foundation Engineering, June 15, 1981, Stockholm, Sweden |
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| Subject | sensitive clay; breakage; hydraulic tests |
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| Abstract | Hydraulic fracture tests were carried out in two geologically different soft sensitive clays in order to study the fracture pattern which had formed in situ around inserted piezometers. Piezometers of different lengths were used in the test program, and a methylene blue dye was used to mark the fissures. The fractured clay was recovered with a large diameter block sampler and the fissures identified and mapped. Well defined vertical fractures developed around the long piezometer tips but not around the ones of zero length. In all tests, however, fractures inclined from 20 to 35 degrees from the horizontal developed above each piezometer tip, tracing the surface of an inverse cone with its apex at the top of the piezometer. The paper discusses the fracture patterns and the effects of piezometer length, time of embedment, and the effect of soil disturbance, caused by installing the piezometers, on hydraulic fracture test results. |
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| Publication date | 1981 |
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| Publisher | A.A. Balkema Publ. |
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| Place | Rotterdam, Netherlands |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Identifier | DBR-P-998 |
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| NRC number | NRCC 19688
NRC-IRC-291 |
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| NPARC number | 20375369 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | a36ec2e2-5c56-4af0-bd86-a1f78b106e99 |
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| Record created | 2012-07-23 |
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| Record modified | 2024-03-22 |
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