DE1658845A1 - Joint with seal - Google Patents

Description

(US 545 109 - prio 25.4.66 IO529 -47 * 1)

WR Ore ce it Co. Cambridge. Haas., V.St.A. Hamburg, April 18, 1967 Fugue wit seal

The present invention relates to joints for laying between ~ " adjoining slabs in concrete structures, in particular Road surfaces, taxiways and floors, and shows a path for the production of expansion and contraction joints without the laborious processing of the edge joints. .

Concrete ceilings expand and contract. the Movement of a road surface that is exposed to a temperature drop of 67 ° C in the course of the year * so fluctuates between 4 μ for plates of 6 m lung and 12 mn for plates of 18 » Longing.

It is common practice in fresh concrete pavement in certain areas Separate separating strips made of belspielewe.ee metal, wood, plastic or Aaphaltaassen to insert a point of contact for the formation of Sohrumpfleeen la concrete when setting and subsequent jellyfish and its disappearance. at The use of floor joints will require these Strexfen on beeti Places are continued and run from the street surface to a depth of about 1/5 of the concrete dioca. If dl «

0098A9 / 062S bad ohminal

individual sections of the road surface are limited by expansion joints, these strips are used vertically and run from the road surface to a depth of 1/5 to 1/4 of the concrete thickness below the planned road surface. When load distribution elements such as dowels for road reinforcement need to be used, they are inserted through holes punched in the PUllstrip. After inserting the φ Concrete is the ceiling mostly with a machine-driven Smoothing device or oil screed smoothed. After that each Joint processed by hand »because the edges of the joints are straight and The nuts must run cleanly and must not have any breaks or any additional pieces protruding beyond the grout.

The strips can consist of support elements made of metal or hard Kunstetoffmaterlal, between which - in general immediately before or after pouring the concrete - waterproofing strips made of elastic material, e.g. Oumml, cork «plastic or asphalt «. These will either be in place and site manufactured or prefabricated and attached to the stanchion elements prior to the pouring of the concrete. This is with considerable expenditure of time and oesohiok of the road construction workers tied together.

With the present invention, prefabricated stretching * * * and contraction joints have been proposed for concrete structures, which are made of a hose-shaped, elastic thread wall.

0 0 9 8 A _9/0 6 2 5 BAD original

Generally box-shaped cross-section with two rare walls, one Bottom wall and a top wall protruding over the two side walls and thereby forming two near outwardly directed bulges and two outside on the two side walls of the sealing element adjacent support elements each with a flange near the outside curved upper edge and forming a bead of the sealing element receiving groove back inward ge ^ curved beef.

The invention prefabricated with sealing elements Joints expand "with the seasonal movement of the pavement slabs" and expand with them and form a permanently sealed joint against the ingress of dirt, sand and water. You can after laying with a grouting machine or by hand with your head » components remain in their place and do not need to be ^ add or pour a filling into the joint space; In a preferred form they provide joints, their rounders stay sharp and clean and don't require hand overwork. They also enable the road surface to be oiled by machine or by hand, without having to take into account existing separation trelves and without certain components must be removed beforehand.

009849/0625

The invention is explained in more detail below in the form of examples with reference to the accompanying drawings; show it

Figure 1 - a joint according to the invention in a perspective view; Figure 2 - the two support elements «of the joint according to Figure 1 in front

Introducing the Diohtungsstrelfens in perspective View;

Figure 3 - a vertical section through the joint in a concrete body in the compressed state;

Figure * - the same section as in Figure 3 »with which however, the concrete body has contracted and at the Joint is torn, which as a result has expanded

FIG. 5 - an expansion element made of rubber in a perspective view;

Figure 6 - a joint provided with a seal with a pressable joint spongy edge retaining element and

Figure 7 and 8 - modifications of the vertical walls of the Edge retaining element.

The joint 10 shown in the drawings comprises two
opposing metal supports in the form of strips 11 and 12 (see FIG. 2), which are preferably made of stainless steel. Each strip has a cranked cross-sectional shape and consists of an upper part 17 ', a middle part 15 inclined towards the inside and below, and a lower part 16, the lower edge of which is provided with an anchoring flange lh which is bent towards the outside and at the top.

009849/0625

BATH ORIGINAL

The middle part 15 is bent in such a way that the lower parts 16 of the opposite strips abut one another and the upper parts 17 can form a roughness for receiving the outer sealing element 18. The upper edge of the upper part is bent into a tarpaulin oh IJ> near the outside, which is bent inwards again at 19 and thus forms a groove for holding the sealing element 18.

Ia upper part 17 is formed as wall anchoring from bracket 27, which are obtained by making parallel cuts and bending the metal strip in between. The bracket 27 and the Anchoring flansohe 14 are embedded in the concrete and hold the metal strips 11 and 12 firmly in place.

Daa sealing element 18 consists of a sole hollow rod Strand Ht box-shaped «cross-section sue xMhem aging and ozone-resistant balls and has a top wall 21 »a V-shaped Bottom wall 22 and swel side winds 25. The top wall 21 protrudes Beyond the crosswinds 23 and there you do one at a time Edge bead 24 thickened, which in between the near inside curved edge 19 and the Planeoh IJ of the side strips 11 and 12 engages formed groove. From the top wall 21 to the bottom wall 22 runs an intermediate wall 25 arranged in the middle.

009849/0625 bad original

The dimensions given below can of course be modified depending on the requirements, but generally satisfactory joints for street ceilings are obtained if the depth of the strip from the top to the anchoring flange is 1/5 to 1/4 of the depth of the concrete ceiling and the rubber sealing strip is in When stretched, it has the following dimensions
φ distance between crosswinds in extensive

State * 19/05 mn

Thickness of the rare walls and the intermediate wall · 1.59 mm Diok · the upper wall 2.37 mm

Overall depth 25.4 mm Depth of the V in the upper wall 1.59 mm Depth of the V in the bottom wall 1.59 mm

To assemble the joint, the two strips 11 and 11 are arranged opposite one another and the rivets 24 are then inserted into the respective ones Grooves of the strips used, which can then be pressed against the beads.

After assembly, the strips become that in Figure 1 inclined position compressed and tied with Wire held in this position. So that the wires when shipping do not slip, they are guided by the bracket 27. In this condition the strips are sent to the road construction company delivered, which the jointed dividing strips

009849/0625

BATH ORIGINAL

laid across the street at the prescribed distances · The strips are laid in such a way that their upper edges are straight with or just below the surface of the pavement; the arrangement of these strips is invariable after the concrete is earthed, since they are firmly anchored in the concrete by the anchoring flanges 14 and the bracket 27.

The separating strips, the length of which corresponds to the full width of the road surface, can be laid by hand in the wet concrete. The concrete over the parting strip is hand-finished, which generally consists only of brushing parts of the tent from the open panel of the gasket 18 and cutting the binding wire. After that, the joint is free to the 8ohwinden the concrete follow zn in hardening and yield to any TemperaturverXnderung.

These joints seal the space between the pavement slabs all positions between a full squeeze the sealed expansion joint (Figure 5) in summer temperatures and a relatively wide distance apart same at ■ winter temperatures (Figure 4). The Qummidlohtung, which - as I said * from every ten oxon ~ and ohemeal-resistant rubber, seals the joint against the penetration of water, sand and dust,

0098A9 / 0625

BATHROOM OBlGlNAL

" 8th

which can otherwise be stuck in the joint space, and if the subsoil is properly drained it arches upwards, since the joint remains permanently sealed ₀

Although the prefabricated joint described above is extremely advantageous and only a cutting through of the binder "wire and brushing requires of cement slurry from the fold of the to-* saumengedrüokten seal" a sponge 'or foam be achieved in a location further cost savings and improvements by the additional use. -Dose embodiment of the invention is shown in FIG.

In this embodiment, the last cut is leg Assemble the joint in it, an edge retaining strip 28 from Attach foam rubber to the top of the flanges 1}. The attachment of the foam rubber to the metal can be done at any Catfish take place. However, *; le is preferably used with "Help one applied to the underside of the strip 28 pressure-sensitive adhesive layer made.

The finished joint covered with foam will be like Ib above case, across the roadway either by hand or with a joint laying base to a depth at which at least the greater part of the vertical Winch 29 of the foam strip over the planned surface the road surface protrudes.

009849/0625 ^ßAD

Mornalerweiae the concrete is "after it has been poured and distributed between the formwork" smoothed with a machine-driven smoothing device (float) . When the concrete is then sufficiently set, the separating strips are removed and the m

Joints straightened and cleaned by hand.

If the smoothing device goes over the protruding parts of the Foam rides, the foam can be significantly reduced compress more easily than you see the fresh concrete moving · The main activity of the smoothing device is therefore » Press the foam so far that the smoothing device moves over it and removes excess concrete removes the foam surface. As soon as you see the smoothing device Has moved over the joint, the expands Foam back to its original dloke out and causes the formation and maintenance of a straight band when the concrete hardens., MaoH de «the first setting of the Concrete the ecnaumetoffatreifen is removed and immediately dantoh cut the binding wire.

The Sahaueetoffit tire has iweokeactively a · Dloke of about 6 hm. With open-pore look to ff with a seal · of

009849/0625

- ίο -

0.032 to Ο, ΙβΟ g / cnr give good results. That Foam material can be made from qummi, synthetic rubbers of chlorobutadiene, butadiene styrene or acrylonitrile type, Isobutene with isoprene or butadiene, ethylene-propylene, polyurethanes, polyethylene foam or Polyäfchylen-Vlnylacetat = Mixtures exist.

The vertical walls 29 of the foam strip can do that reverse profile to that used for the edges of the concrete slabs have the desired profile. In Figure 7 and 8 foam strips are shown with a beveled or curved profile, which in reverse form on the edges of the concrete slabs returns. Profile 29 can be chosen as desired, but it always has to be from the top of the steel strips 11 and 12 extend outwards and upwards.

Because the only work that these joints require is in the Removal of the foam strip and cutting through of the binding wire, significant cost savings are achieved in road construction. Another significant benefit consists of the length of the time to be applied in one day Concrete ceiling not due to the number of available construction workers sun editing the joints by hand the hardening of the concrete is limited. The application of the O «ok« can be done without limiting the number of Joints are carried out.

0098 4 9/0625 _BAD

The metal strips of the joints can also be made of a material other than stainless steel such as ordinary Steel can be used, however, it is a corrosion resistant material like stainless steel because of the use of saIs and chloride are extremely beneficial on the roads and much cheaper in terms of road durability.

hb.:eu.

009849/0625

Claims (4)

(US 545 109 - prio 25.4.66 IO529 -Wl) W. R. Grace & Co., Cambridge, Mas ".. V.St.A. Hamburg, April 18, 1967 Claims 1. Expansion and shrinkage joint for use in concrete constructions, in particular road surfaces, in which an elastic compressible and expandable sealing element is arranged between two Stutζelemente extending on both sides, characterized in that the joint consists of a prefabricated unit (10), in which the sealing element (18) has the shape of a hose with a box-shaped cross-section with two side winds (23), a bottom wall (22) and an upper wall (21) protruding over the two side winds and thereby forming two beads (24), and the two Support elements are in the form of strips (11, 12) resting on the outside of the two side winds (25), the upper edges of which are each bent outwards to form a flange (12) and an inwardly bent edge ( I9), and that the sealing element (13) by inserting the beads (24) into the grooves and preferably pressing the edges (19 ) and flanges (I3) attached to the support strips (11, 12). 009849/0625 2. Joint naoh claim I, characterized in that the StUtsetrelfen (11, 12) to the Seitenwifaide (23) dee Diohtungselements abutting upper parts (17) »naoh below and inside and at least partially under the sealing element extending middle point (I5) and below the sealing element have downwardly extending lower parts (l6). 5. Fugue according to claim 2, characterized in that the Lower edges of the lower parts (16) are designed as anchoring flanges (14) which run close to the outside and top, and the upper parts (17) old naoh outside protruding brackets (27) are provided. 4. Fugue naoh claims 1 to 3 # daduroh characterized, OsJ dl · bottom wall (2a) of the sealing element * (18) one V-fönaigen Quersohnltt has a vertical partition wall (25) runs between the top wall (21) and the lowest point of the V. 5 · joint close to claims 1 to 4, characterized by the fact that the roughness between the near inner curved edges (I9) of the two support tires (11, 12) through one at the edges attached foam element (28, 28a, 28b) bridged is',
hb.teu. 009849/0625