| 1. |
|
|
| 2. |
- Pusch, Roland
(author)
-
Bentonine shielding of rock-deposited redioactive wastes
- 1983
-
In: Nuclear Waste Management Program. - Washington. ; , s. 112-124
-
Conference paper (peer-reviewed)abstract
- The Swedish KBS concepts for final deposition of canisters with nuclear wastes from reactors, imply that the canisters be placed in deposition holes which are bored from the floors of tunnels at about 500 m depth in Swedish crystalline bedrock. The canisters are isolated from the rock by a ″buffer mass″ consisting of pure bentonite in the case of unreprocessed wastes, and the deposition plant is finally sealed by backfilling shafts and tunnels with bentonite/sand mixtures. The bentonite, which surrounds the canisters, is applied in the form of blocks of highly compacted bentonite. The blocks are produced by isostatic compaction of commercial bentonite powder under pressures in the range of 50-100 MPa, which yields block densities of 2. 1-2. 2 t/m**3 when using Wyoming Na bentonite MX-80 powder. The compacted bodies are cylindrical and they can be manufactured by sawing, drilling etc. so that cylindrical discs, rods, annuli, and practically any shape can be obtained. The particularly attractive properties of the highly compacted Na bentonite are reported
|
|
| 3. |
- Pusch, Roland
(author)
-
Borehole sealing for underground waste storage
- 1983
-
In: Journal of Geotechnical & Geoenvironmental Engineering. - 0733-9410 .- 1944-8368. ; 109:1, s. 113-119
-
Journal article (peer-reviewed)abstract
- Rock drilling is involved in field investigations in the search for suitable sites for nuclear waste repositories. The boreholes have to be sealed with some low-permeable, ductile, and chemically stable plugs. Compacted bentonite clay confined in perforated metal pipes has been tried and laboratory as well as field tests show the merits of the technique, which should be applicable to holes of practically any length in many types of rock.
|
|
| 4. |
|
|
| 5. |
- Pusch, Roland
(author)
-
Chairman's Report
- 1982
-
In: Developments in Geotechnical Engineering. - 0165-1250. ; 28, s. 1-4
-
Journal article (other academic/artistic)
|
|
| 6. |
- Pusch, Roland
(author)
-
Chairman's report
- 1981
-
In: Engineering Geology. - : Elsevier BV. - 0013-7952 .- 1872-6917. ; 18:1-4, s. 1-4
-
Journal article (other academic/artistic)
|
|
| 7. |
- Pusch, Roland, et al.
(author)
-
Computer simulation of creep of clay
- 1981
-
In: Journal of the Geotechnical Engineering Division. - 0093-6405. ; 107:1, s. 95-104
-
Journal article (peer-reviewed)abstract
- The variable character of the particle contacts in natural illitic clay implies a spectrum of bond strengths. When a sufficiently high external shear stress is applied some weaker interlinking particle groups are transformed to left double quote domains right double quote which act as slip units. In creep induced by a constant deviatoric stress, the number and heights of thermally activable barriers to slip will vary in space and time. This is encompassed by a stochastic model, a simple version of which was used in a computer simulation. The dependence of the strain on time was found to be logarithmic, in good agreement with experiments.
|
|
| 8. |
|
|
| 9. |
|
|
| 10. |
|
|
