초록 ▼

A method for the waterproofing of joints and/or cracks in the upstream face of dams, other hydraulic works and concrete or masonry structures. A waterproofing membrane includes a strip of elastically yielding synthetic material that is fastened to the surface to be protected along the whole joint an

A method for the waterproofing of joints and/or cracks in the upstream face of dams, other hydraulic works and concrete or masonry structures. A waterproofing membrane includes a strip of elastically yielding synthetic material that is fastened to the surface to be protected along the whole joint and/or crack. Prior to positioning the waterproofing membrane, sliding elements are positioned onto the surface to support the membrane. A protection and sliding substrate is properly fastened independently from the waterproofing membrane so that the waterproofing membrane is allowed to freely elongate and follow the movements of the joint and/or the crack while maintaining a water tightening condition.

대표청구항 ▼

A method for the waterproofing of joints and/or cracks in the upstream face of dams, other hydraulic works and concrete or masonry structures. A waterproofing membrane includes a strip of elastically yielding synthetic material that is fastened to the surface to be protected along the whole joint an

A method for the waterproofing of joints and/or cracks in the upstream face of dams, other hydraulic works and concrete or masonry structures. A waterproofing membrane includes a strip of elastically yielding synthetic material that is fastened to the surface to be protected along the whole joint and/or crack. Prior to positioning the waterproofing membrane, sliding elements are positioned onto the surface to support the membrane. A protection and sliding substrate is properly fastened independently from the waterproofing membrane so that the waterproofing membrane is allowed to freely elongate and follow the movements of the joint and/or the crack while maintaining a water tightening condition. ymer stabilizers, clay stabilizers, scale inhibitors, scale dissolvers, wax inhibitors, wax dissolvers, asphaltene precipitation inhibitors, waterflow inhibitors, sand consolidation chemicals, proppants, permeability modifiers, microorganisms, viscoelastic fluids, gases, foaming agents, and nutrients for microorganisms. 10. The method of claim 1, wherein the chemical or biological agent is selected from the group consisting of crosslinkers, polymers, biocides, corrosion inhibitors, corrosion dissolvers, pH modifiers, breakers, metal chelators, metal complexors, antioxidants, wetting agents, polymer stabilizers, clay stabilizers scale inhibitors, scale dissolvers, wax inhibitors, wax dissolvers, asphaltene precipitation inhibitors, waterflow inhibitors, sand consolidation chemicals, permeability modifiers, foaming agents, microorganisms, nutrients for microorganisms, and salts. 11. The method of claim 10, wherein the chemical or biological agent is a breaker selected from the group consisting of oxidative breakers, enzymes, pH modifiers, metal chelators, metal complexors, polymer hydrolysis enhancers, and micelle disturbing substances. 12. The method of claim 1, wherein the fluid composition has a higher viscosity after its exposure to the second ambient condition than it had prior to its exposure to the second ambient condition. 13. The method of claim 1, wherein the fluid composition comprises at least one polymer and at least one crosslinker. 14. The method of claim 13, wherein the polymer is water soluble. 15. The method of claim 14, wherein the polymer is selected from the group consisting of galactomannan polymers; derivatized galactomannan polymers; xanthan gums; hydroxycelluloses; hydroxyalkyl celluloses; polyvinyl alcohol polymers; and polymers that are the product of a polymerization reaction comprising one or more monomers selected from the group consisting of vinyl pyrrolidone, 2-acrylamido-2-methylpropanesulfonic acid, acrylic acid and acrylamide. 16. The method of claim 14, wherein the crosslinker comprises at least one chemical from the group consisting of aluminum, chromium, iron, boron, titanium, and zirconium. 17. The method of claim 14, wherein the polymer and the crosslinker can react with each other readily when the emulsion is destabilized. 18. The method of claim 17, wherein the continuous phase comprises the polymer and the discontinuous phase comprises the crosslinker. 19. The method of claim 17, wherein the continuous phase comprises the polymer and the crosslinker, and wherein the discontinuous phase comprises at least one pH modifier that changes the pH of the fluid composition when the emulsion is destabilized. 20. The method of claim 1, wherein the first zone is at or near the surface of the well, the second zone is at or near the hydrocarbon-bearing formation, wherein the first ambient condition and the second ambient condition differ in at least temperature, and the difference in temperature between the first zone and the second zone is due to the naturally occurring difference between the ambient temperature in the first zone and the ambient temperature in the second zone. 21. The method of claim 1, wherein the first zone is at or near the surface of the well, the second zone is at or near the hydrocarbon-bearing formation, wherein the first ambient condition and the second ambient condition differ in at least pH, and the difference in pH between the first zone and the second zone is due to at least one pH modifier being present in the second zone at a higher concentration than in the first zone. 22. The method of claim 21, wherein the pH modifier present in the second zone is at least one of (a) a pH modifier naturally occurring in the second zone, (b) a pH modifier pumped into the second zone prior to contact of the fluid composition with the second zone, or (c) a pH modifier that is the product of a reaction of materials pumped into the second zone prior to contact of the fluid composition wi