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
  • E04B1/6806—Waterstops
• • 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
  • E04B2001/6818—Joints with swellable parts

Definitions

• the present invention relates to a prefabricated expansion joint element for embedding in in situ poured concrete structures, comprising two spaced, generally parallel and interconnected boundary plates and a seal therebetween, the external side of each boundary plate being adapted for being cast in sealing contact with the respective concrete structure.
• water-stop generally is a flexible strip of PVC or rubber which is embedded into both concrete structures.
• This method entails large drawbacks. Firstly, a form has to be erected for the first concrete structure, slots having to be made therein for one half of the strip to be embedded. This work must be done very carefully so that the strip obtains a firm attachment and is not brought out of position during the casting work. When the concrete has cured, the form is removed and, in order to make space for expansion of the concrete, a layer of compressible material is placed in the area over and below the strip. Thereafter the next structure is formed and cast. This process is very time consuming and also requires great care in order for the casting in to be satisfactory.
• each of the boundary plates is divided into two portions which are spaced from each other, and in the space between these portions a seal of water swelling rubber has been placed.
• This water swelling rubber becomes exposed during handling, installa ⁇ tion and casting, which requires special precautions in order to avoid that the rubber starts swelling before casting of the structure is finished.
• a consider ⁇ able amount of water swelling rubber is necessary, this material being quite expensive.
• the boundary plates consist of plastic material and as their two portions are interconnected via the water swelling rubber, the expansion joint element does not possess the rigidity, sturdiness and strength desirable on a working site.
• each of the prefabricated concrete elements is on one longitudinal edge provided with an embedded, partly extending plate, the free edge of which is provided with a rubber moulding.
• the opposite longitudinal edge is pro- vided with an embedded section forming a longitudinal slot.
• an object of the present invention is to provide a prefabricated expansion joint element of the introductory type which is sufficiently robust to withstand rough treatment on a building site, is inexpensive to manufacture and simple to use, all the while providing adequate secu ⁇ rity against water leakage.
• this is obtained in that at least one of the boundary plates on its inner side is provided with a longitudinal, protruding glide plate, in that in the opposite boundary plate a chamber is arranged into which the glide plate extends, and in that said seal is arranged in said chamber where it acts between the inside of the chamber and the glide plate.
• the boundary plates can simply be manufactured as extruded aluminum sections, which easily can be provided with the desired strength.
• the chamber for the seal can have a very limited volume for economizing with the sealing material.
• the boundary plates are both provided with a glide plate and a chamber. This facilitates using one and the same section for both boundary plates, one of them being turned upside down with respect to the other. In this case the glide plate on one of the boundary plates will fit into the chamber of the other, and vice versa, so that one obtains a double seal and greater security against leakage as a result of any material or production faults.
• the boundary plates with glide plate and chamber have the general form of an L.
• one end portion of the glide plate is provided with a socket-like extension, which also can be received at least partially in the chamber. The other end portion of the adjacent glide plate fits into the socket-like extension, thereby forming a socket joint.
• the chamber is divided into two sections, one of these being completely penetrated by the glide plate and containing the seal. This ensures that the movements of the free edge of the glide plate are less likely to damage the seal. Besides, the consumption of sealing material is further reduced.
• the sealing material may advantageously consist of water swelling rubber, but also other types of seals may be used.
• the seal may for example be constituted by one or more inflatable hoses, and if there is two such hoses in the chamber, one on either side of the glide plate, one of them may be used to monitor the water pressure in the joint.
• the space between the boundary plates may be at least partially filled with an elastic foamed material adhering to the inside of the boundary plates.
• the drawing shows an expansion joint element embedded in a concrete structure 1.
• the element comprises two boundary plates 2 and 3, of which one 2 is provided with a protrud ⁇ ing glide plate 4.
• the glide plate 4 extends into a chamber which is generally designated 5 and is arranged on the other boundary plate 3.
• the chamber 5 is divided into two compartments 6 and 7, of which one 6 is completely penetrated by the glide plate 4.
• This compartment 6 is further filled with a seal 8, e.g. in the form of water swelling rubber, which acts between the inside of the chamber compartment 6 and the glide plate 4.
• the free edge of the glide plate 4 extends into the chamber compartment 7, which preferably is filled with air.
• the space 9 between the boundary plates 2 and 3 is filled with a foamed plastic material, e.g. polyurethane or polystyrene, and is at the joint opening packed with elastic jointing material 10.
• a foamed plastic material e.g. polyurethane or polystyrene
• the invention is not limited to the exemplary embodiment shown but may be varied and modified in a number of ways without departing from the spirit of the invention.
• the chamber with the seal be a separate element lying freely between the boundary plates, the boundary plates each having a separate glide plate extending into the common chamber.
• the glide plate may conceivably be attached to the respective boundary plate in a hinge joint, and the same can conceiv- ably be done with the chamber.
• each boundary plate may be provided with a chamber, while the glide plate is a separate part functioning together with both chambers.
• boundary plates, glide plate and chamber may for instance be made sufficiently large to provide room for a sealing groove in their end surfaces.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Orthopedics, Nursing, And Contraception (AREA)
• Mutual Connection Of Rods And Tubes (AREA)
• Joining Of Building Structures In Genera (AREA)
• Building Environments (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19895750

Family Applications (1)

Country Status (3)

Cited By (1)

Citations (3)

• 1993
  • 1993-01-13 NO NO930109A patent/NO176450C/no unknown
• 1994
  • 1994-01-11 WO PCT/NO1994/000009 patent/WO1994016161A1/en active Application Filing
  • 1994-01-11 AU AU58929/94A patent/AU5892994A/en not_active Abandoned

Patent Citations (3)

Also Published As

Similar Documents

Legal Events