Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
  • E04B1/66—Sealings
  • E04B1/68—Sealings of joints, e.g. expansion joints
  • E04B1/6816—Porous tubular seals for injecting sealing material
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D29/00—Independent underground or underwater structures; Retaining walls
  • E02D29/16—Arrangement or construction of joints in foundation structures

Definitions

• Injection tube for chemical injection in concrete for chemical injection in concrete.
• the present invention relates to an injection tube for chemical injection in concrete.
• the ideal joint between two concrete castings would be one obtained without cracks, crevices, rock nests and the like.
• a sealing material usually a two-component polyurethane material-- is injected into the tubes and distributed into the joint by means of the perforations, with subsequent hardening and sealing.
• the purpose of the cloth is to prevent the concrete mass being poured from sealing the perforations in the dis ⁇ tribution tube for the hardening material; but for this purpose, the textile cloth has proven unfavorable, as the cloth is itself a surface element which, during the process of pouring/casting, would become sealed, thus preventing the injection mass from being released from the perforated tube for sealing of the cracks and crevices that had occurred.
• This system comprises a tube core of a strong and solid material, along which in the longitudinal direction thereof are disposed grooves, in the bottom of which grooves are in turn formed perforations therethrough.
• slats The purpose of these slats is to prevent the poured/cast concrete mass from sealing the perforations in the tube, while at the same time ensuring that the injection mass can be pressed out of the feed tube and into the surrounding cracks and crevices, even with low pressure.
• this known “fuko" sustem is then provided with a surrounding woven, open plastic stocking to hold the longitudinal slats in place.
• This system is technically very reliable and safe in use, but has the drawback that it is relatively complicated to produce and also is very expensive.
• the present invention aims to provide this type of reasonable injection system for chemical injection in concrete, and therefore relates to an injection tube of the described type comprising a central, regularly perforated feed tube having a cover loosely disposed over the perforation.
• This tube is characterized in that the cover consists of a compressible casing having fine pores therethrough, and disposed around the periphery of the tube.
• This cover preferably consists of a pliable foamed plastic or similar material, having fine through-going pores.
• this cover over the perforation is to prevent the sealing of the perforations by the concrete mass poured thereon.
• the cover according to the invention by virtue of the fact that the casing, on contact with the concrete, is pressed together and sealed, thereby blocking access of the concrete to the perforations, whereas there will still remain open channels where the effect of the concrete is less direct, enabling the injection mass to be released from the perforations and to flow into the cracks and crevices to be sealed.
• a feed tube there may be used, according to the invention, a conventional thick-walled plastic hose with perforations regularly disposed around the entire circumference.
• the casing when constructed of foamed plastic material, may be produced by extrusion onto the tube.
• a surrounding holding stocking may be placed onto the tube, although this is not absolutely necessary.
• a fine-wired steel wool for example, could be used.
• the invention is illustrated in the accompanying sketch showing an injection tube 1 consisting of feed tube 2, having in both the longitudinal direction and the circumference thereof regularly positioned perforations 3, and around which central tube 2 there is arranged a compressible casing 4 having fine pores therethrough.
• the product according to the invention is simple and easy to produce compared with the prior art, and thus may also be produced for a far lower price than the products of com ⁇ parable quality currently found on the market.
• the invention's subject thus meets the market's need for an inexpensive product with reasonable security, for use in all places where waterproofing is necessary due to sporadic risk of water pressure outside the concrete structure, but where the major consideration is, if not to totally shut out the water, at least to delay the seepage of water into the structure to a degree where safety and security is in pro ⁇ portional to the existing risk.

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19893985

Family Applications (1)

Country Status (6)

Cited By (4)

Families Citing this family (4)

Citations (5)

Family Cites Families (3)

• 1991
  • 1991-03-19 NO NO911086A patent/NO177939C/no not_active IP Right Cessation
• 1992
  • 1992-03-11 JP JP4507009A patent/JPH06506275A/ja active Pending
  • 1992-03-11 WO PCT/NO1992/000044 patent/WO1992016696A1/en not_active Application Discontinuation
  • 1992-03-11 AU AU14380/92A patent/AU1438092A/en not_active Abandoned
  • 1992-03-11 EP EP92907191A patent/EP0575457A1/en not_active Withdrawn
  • 1992-03-12 DE DE4207919A patent/DE4207919C2/de not_active Expired - Fee Related

Patent Citations (5)

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