US5141362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing a sealing for waste dumps and the like
Assignee: Individual
•
Filing: 1990-06-29
•
Granted: 1992-08-25
•
Expires: 2010-06-29
Abstract
Abstract A process for constructing a self-sealing layer for landfills and waste dumps that use a base layer, cap layer, or liner to seal the area from water percolation through cracks or holes. A layer of soil is provided having specified characteristics which will become flowable under the effects of water moving through the layer. The soil is moved into the crack or hole by the water and accumulates until the breach is sealed. Geotextiles, otherwise known as textile mats, may be used inside the layer to reinforce the layer and enhance the self sealing effect of the flowable soil layer. Water glass and an appropriate gelling agent may be used in an embedding zone on either side of the mat to enhance and adhesion between the mat and the material in the cap, base, or liner.
Inventors
- 👤 Jost-Ulrich Kugler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:58
CPC Classifications
E; E02; E02D; E02D31/00; E02D31/002; E02D31/004; B; B09; B09B; B09B1/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
101 words
In a process for sealing waste dumps wherein said waste dump comprises one or more sublayers of soil material as a sealing layer over a subsurface to be sealed wherein the improvement comprises applying a layer of soil selected from the groups consisting of OU, OT, OH, OK, SU, ST, GU, GT, TU, and TL onto the surface of the sealing layer, said soil becoming a flowable soil under the influence of drainage water moving through said layer of soil whereby the soil is transported by said drainage water into a crack in said sealing layer until said crack is sealed.
Claim 2
Dependent Claim
101 words
In a process for sealing waste dumps wherein said waste dump comprises one or more sublayers of soil material as a sealing layer over a subsurface to be sealed wherein the improvement comprises applying a layer of soil selected from the groups consisting of OU, OT, OH, OK, SU, ST, GU, GT, TU, and TL onto the surface of the sealing layer, said soil becoming a flowable soil under the influence of drainage water moving through said layer of soil whereby the soil is transported by said drainage water into a crack in said sealing layer until said crack is sealed.
Claim 3
Dependent Claim
29 words
Process according to claim 1, wherein the step of applying said soil comprises applying the soil with non-swelling clay minerals in an amount of 3 to 10 weight %.
Claim 4
Dependent Claim
42 words
Process according to claim 1, wherein the applying step comprises applying the soil with the following composition: ______________________________________
Component Weight % Grain Size, mm
______________________________________
clay 5-15 0.001-0.002
silt 35-25 0.002-0.063
fine sand 45-55 0.063-0.2
medium and coarse sand
15-5 0.2-1.0.
______________________________________
Claim 5
Dependent Claim
21 words
A process according to claim 1 comprising the step of applying the soil to a thickness of 5 to 10 cm.
Claim 6
Dependent Claim
33 words
A process according to claim 1 further comprising the step of installing a geotextile mat having a fabric mesh size that retains grain sizes of fine sand and coarser in said sealing layer.
Claim 7
Dependent Claim
69 words
A process according to claim 5 further comprising the steps of mixing powdered water glass with sealing soil in a sublayer of said sealing layer before said geotextile mat is installed in said sealing layer, laying down said geotextile mat on the sublayer containing said water glass, spraying said geotextile mat with a gelling agent for said water glass, and laying sealing soil on top of said geotextile mat.
Claim 8
Dependent Claim
49 words
The process of claim 6, wherein the mixing step comprises mixing water glass with sealing soil below said geotextile mat to a thickness of 5 to 10 cm and laying sealing soil containing water glass on top of said geotextile mat to a thickness of 5 to 10 cm.
Claim 9
Dependent Claim
20 words
Process of claim 6 further comprising selecting the gelling agent from the group consisting of aldehydes, amides, esters, or trialkoxysilanes.
Claim 10
Dependent Claim
46 words
A process according to claim 1 further comprising the step of installing a geotextile mat in the sealing layer within an embedding zone extending over both sides of the geotextile mat, wherein said embedding zone comprises water glass and a gelling agent for said water glass.
Claim 11
Dependent Claim
27 words
Process of claim 9, wherein the installing step comprises installing the geotextile mat in the upper third and lower third of the thickness of the sealing layer.
Claim 12
Dependent Claim
20 words
Process of claim 9 further comprising selecting the geling agent from the group consisting of aldehydes, amides, esters, or trialkoxysilanes.
Claim 13
Dependent Claim
32 words
Process of claim 9 wherein the installing step comprises installing said geotextile mat in said embedding zone with a thickness of 5 to 10 cm on each side of the geotextile mat.
Claim 14
Dependent Claim
37 words
The process of claim 9 wherein said soil has the following composition: ______________________________________
Component Weight % Grain Size, mm
______________________________________
clay <15 0.001-0.002
silt 25-35 0.002-0.063
fine sand 45-55 0.063-0.2
medium and coarse sand
15-5 0.2-1.0.
______________________________________
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-25 | 1996-02-24 | 1996-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-25 | 2000-02-24 | 2000-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-25 | 2004-02-24 | 2004-08-25 | $7700.00 | Window Closed / Lapsed |