Abstract:
A plurality of panel subassemblies are used to erect a building on a footing or foundation. Each panel subassembly includes at least one column formed of a thermally-insulating material, and a concrete portion at least partially attached to the at least one column. The concrete portion may be formed as a single precast unit. The panel subassemblies are secured together and to the foundation, and may be secured to a floor element of the building to at least partially support the floor element.
Abstract:
The invention relates to a process for the treatment of a rock formation or cavity, comprising the step of injecting, into said rock formation or cavity, a water solution of a water-soluble thermo-thickening polymer, said thermo- thickening polymer being able to form a gel at a threshold temperature (T g ), an inner temperature (T int ) of the rock formation or cavity being equal or superior to said threshold temperature (T g ), said process being characterized in that the thermo-thickening polymer is a cellulose chain, partially etherified with C 1 -C 6 alkyl or hydroxyalkyl groups, or a polyacrylamide-based copolymer including N-isopropylacrylamide and/or N-vinylpyrrolidone groups. Such a process is advantageous for water shutoff in gas- or oilfields, or to solve to water channelling problems between injection wells and production wells.
Abstract:
The present invention relates to a method for producing a modified smectite or smectite-containing substance capable of forming gels which are not longer thixotropic, have a stable cross-linked structure and adhesive characteristic and are capable of taking up and releasing water in a reversible manner by treating a non-activated smectite or smectite-containing substance with a water soluble activating agent and with a water soluble polymer capable of reacting with said smectite, wherein 0-6% by weight, calculated on the weight of the smectite, of the water soluble activating agent and 0.3-6% by weight, calculated on the weight of the smectite, of the water soluble polymer are admixed with the smectite or smectite- containing substance, wherein: at least a part of the water soluble activating agent is added before and/or at latest simultaneously with the soluble polymer, wherein at least a part of the water soluble polymer is added as a dry solid, the mixture obtained contains an amount of water in a range of from 20 % by weight of water to 50 % by weight of water, on basis of the mixture.
Abstract:
Bei einem Verfahren zum Abdichten von Pfählen (1) in Untergründen (2) im Baubereich wird ein hohlkörperförmiges Schalungselement (3) verwendet. Das Verfahren umfasst die Schritte: ) Anbringen einer Schottschicht (4) am Untergrund (2); 2) Einbringen eines Pfahls (1) in den Untergrund (2), wobei der Pfahl (1) die Schottschicht (2) durchdringend angeordnet ist; 3) Anbringen eines hohlkörperförmigen Schalungselements (3) entlang der Längsmittelachse des Pfahls (1), wobei das hohlkörperförmige Schalungselement (3) den Pfahl (1) umgibt; 4) Einbringen von mineralischem Bindemittel (5) in den Zwischenbereich (12) zwischen Pfahl (1) und hohlkörperförmigem Schalungselement (3), ) Verbinden von Schottschicht (4) und hohlkörperförmigem Schalungselement (3). Das hohlkörperförmige Schalungselement (3) weist auf der dem Pfahl zugewandten Seite eine Kontaktschicht auf (6), welche eine Verbundschicht (7) aus einem porösen Material und/oder ein Dichtmittel (8) aufweist. Das eingebrachte mineralische Bindemittel (5) verbindet sich im Wesentlichen fest mit der Kontaktschicht und verhindert dadurch ein Hinterlaufen des hohlkörperförmigen Schalungselements mit Feuchtigkeit aus dem Untergrund. Bei diesem Verfahren kann auf das Entfernen der Schalung und dadurch auf einen zusätzlichen Arbeitschritt verzichtet werden, da das hohlkörperförmige Schalungselement als Bestandteil im Bauwerk verbleibt und dabei eine Abdichtfunktion übernimmt.
Abstract:
The present invention relates to a method for producing a modified smectite or smectite-containing substance capable of forming gels which are not longer thixotropic, have a stable cross-linked structure and adhesive characteristic and are capable of taking up and releasing water in a reversible manner by treating a non-activated smectite or smectite-containing substance with a water soluble activating agent and with a water soluble polymer capable of reacting with said smectite, wherein 0-6% by weight, calculated on the weight of the smectite, of the water soluble activating agent and 0.3-6% by weight, calculated on the weight of the smectite, of the water soluble polymer are admixed with the smectite or smectite- containing substance, wherein: at least a part of the water soluble activating agent is added before and/or at latest simultaneously with the soluble polymer, wherein at least a part of the water soluble polymer is added as a dry solid, the mixture obtained contains an amount of water in a range of from 20 % by weight of water to 50 % by weight of water, on basis of the mixture.
Abstract:
A method for waterproofing below-grade structures (10), which comprises: - at least one step of injecting at least one compound (2, 4) adjacent to the surface (10b) that is directed toward the outside of a region of soil (10c) arranged adjacent to a below-grade structure (10) to be waterproofed; - at least one step of measuring the electrical resistivity of the at least one region of soil (10c) subjected to the injection step, the at least one measurement step being adapted to detect the portions of the region of soil (10c) that are affected by the injection of the at least one compound (2, 4).
Abstract:
A melting, bituminous tape joint is disclosed for road and channel construction, underground and overground workings, as well as a process for producing the same and a process for setting the tape joint on a seam or joint edge of a road covering layer. The tape joint comprises a bituminous melting coating applied on at least one side of the surface of the tape.