CA2106352C - Expansion joint sealing element - Google Patents
Expansion joint sealing element Download PDFInfo
- Publication number
- CA2106352C CA2106352C CA 2106352 CA2106352A CA2106352C CA 2106352 C CA2106352 C CA 2106352C CA 2106352 CA2106352 CA 2106352 CA 2106352 A CA2106352 A CA 2106352A CA 2106352 C CA2106352 C CA 2106352C
- Authority
- CA
- Canada
- Prior art keywords
- cross
- longitudinal
- strip
- expansion joint
- sealing element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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
- E04B1/6813—Compressable seals of hollow form
Abstract
An "Expansion joint scaling element", consisting of an arrow-shaped elastomer strip (1), defined by a triangular head (2) and a rear insertion section (3) with an angled end (4), while its lateral walls (5) are externally corrugated (6), an arrangement that is repeated on the external surface of the base (7) and on the lateral sections of the head (2), which, along with the insertion section (3), have various internal, longitudinal hollow sections defined by various interior walls (8), forming an insufflation chamber (9), sa that one end of the strip (1) is closed off, while the other is fitted with a cover (10) and a valve (11), the latter being used to inject air so that the walls of the elastomer strip press against the adhesive applied to its lateral walls, where ridges considerably increase the area of adhesion and prevent the strip from moving while said adhesive cures.
Description
specification for an "Expansion joint sealing element."
This description relates to an "Expansion joint sealing element" or, more specifically, to specially developed technical and functional improvements taking into account the characteristics of an ideal expansion joint seating element, suitable for use in different situations, primarily when significant movements and consddtrable hydraulic pressure ale involved, as is generally the case in dams.
As those familiar whit this technology already know, the imporrance of the sealing element in the expansion joints used in public works construction has been widely recognized for many years. It becomes even more important as the stress on it increases, especially when subjected tn significant mavements and hydraulic pressure, as is generally the case in dams.
At present, three different types of scaling elements are regularly used in dams:
strips of copper, strips of PVC and mastics between elastomer sheets.
'There is no doubt whatsoever that the above sealing elements can be used in expansion joints, although they ate subject to certain limitations or disadvantages, such as: A) strips of PVC, positioned during the laying of the concrete and affixed to the frame, are net elastic and, consequently, do not retain their shape and position when subjected to deformations;
B) mastics protected by elastomer sheets, when subjected to high pressure, leak out if a seam brtalcs; and G~ the sheets are generally affixed by means of metal angle plates arid anchor bolts, which can rust.
Given the above circumstances and disadvantages and with a view to overcoming them, the present "Lxpansion joint scaling elcrnent" was created, which consists essentially of a non-metal sealing element affixod by means of a strong polymer adhesive and made of a high quality elastomer, especially as regards its resistance to weather, allalis, molds, mildew, oil, grease, etc.
A very Important and advantageous factor is the cross section of the device since, unlike conventional sealing elements, it is in the form of an elastomer strip with a unique arrow shape, which is hollow or which has hollow sections that form longitudinal chambers, as well as its external part, which coexists of a triangular hoed and a rear section that can be inserted into the joint, which is entirely covered by said head, said rear section having ridged or uneven surfaces (corrugadan) that adapt perfectly to the inner walls of the joint and to the exterior walls a~acsatt to said joint.
Another advantage of the device is the fact that the sire of the extxuded elactomer strip is perfectly suited to the expansion joint and the stresses on it, as well as the fact that it can be inserted in the expansion joint tn be sealed either all at once or in consecutive stages.
Also advantageous is the existence of a valve, previously installed in the strip, the ends of which are closed, permitting the injection of air so that the wails of the elastomer strip press against the adhesive applied to the sides where the oomigations or ridges are located, which considerably increase the area of adhesion and prevent the strip from moving while the adhesive cues.
Another advantage of the device is its edges, which form the base of the triangular heaJd of the strip, where the hydraulic pressure is received, so that said edges are affixed to the concrete with a device that exerts mechanical pressure on it.
This description relates to an "Expansion joint sealing element" or, more specifically, to specially developed technical and functional improvements taking into account the characteristics of an ideal expansion joint seating element, suitable for use in different situations, primarily when significant movements and consddtrable hydraulic pressure ale involved, as is generally the case in dams.
As those familiar whit this technology already know, the imporrance of the sealing element in the expansion joints used in public works construction has been widely recognized for many years. It becomes even more important as the stress on it increases, especially when subjected tn significant mavements and hydraulic pressure, as is generally the case in dams.
At present, three different types of scaling elements are regularly used in dams:
strips of copper, strips of PVC and mastics between elastomer sheets.
'There is no doubt whatsoever that the above sealing elements can be used in expansion joints, although they ate subject to certain limitations or disadvantages, such as: A) strips of PVC, positioned during the laying of the concrete and affixed to the frame, are net elastic and, consequently, do not retain their shape and position when subjected to deformations;
B) mastics protected by elastomer sheets, when subjected to high pressure, leak out if a seam brtalcs; and G~ the sheets are generally affixed by means of metal angle plates arid anchor bolts, which can rust.
Given the above circumstances and disadvantages and with a view to overcoming them, the present "Lxpansion joint scaling elcrnent" was created, which consists essentially of a non-metal sealing element affixod by means of a strong polymer adhesive and made of a high quality elastomer, especially as regards its resistance to weather, allalis, molds, mildew, oil, grease, etc.
A very Important and advantageous factor is the cross section of the device since, unlike conventional sealing elements, it is in the form of an elastomer strip with a unique arrow shape, which is hollow or which has hollow sections that form longitudinal chambers, as well as its external part, which coexists of a triangular hoed and a rear section that can be inserted into the joint, which is entirely covered by said head, said rear section having ridged or uneven surfaces (corrugadan) that adapt perfectly to the inner walls of the joint and to the exterior walls a~acsatt to said joint.
Another advantage of the device is the fact that the sire of the extxuded elactomer strip is perfectly suited to the expansion joint and the stresses on it, as well as the fact that it can be inserted in the expansion joint tn be sealed either all at once or in consecutive stages.
Also advantageous is the existence of a valve, previously installed in the strip, the ends of which are closed, permitting the injection of air so that the wails of the elastomer strip press against the adhesive applied to the sides where the oomigations or ridges are located, which considerably increase the area of adhesion and prevent the strip from moving while the adhesive cues.
Another advantage of the device is its edges, which form the base of the triangular heaJd of the strip, where the hydraulic pressure is received, so that said edges are affixed to the concrete with a device that exerts mechanical pressure on it.
In accordance with an aspect of the present invention, there is provided an expansion joint sealing element comprising: an elongate elastomer strip having a longitudinal head portion and a longitudinal insertion portion operably connected to said longitudinal head portion such that said elongate elastomer strip is configured in cross-section to have a generally arrow shape with a first and second cross-sectional end; said longitudinal head portion defined in cross-section by opposed panels that slope from said first cross-sectional end toward said second cross-sectional end, further comprising a base portion such that said adjacent panels of said longitudinal head portion and said base portion interact to form a generally triangular shaped head, said adjacent panels further configured to define a portion of a central internal strip chamber; and said longitudinal insertion portion defined in cross-section by opposed lateral walls extending from said base portion of said longitudinal head portion and terminating in a rear wall at said second cross-sectional end, said rear wall defined by adjacent panels sloping from said second cross-sectional end toward said first cross-sectional end such that said adjacent panels of said longitudinal insertion portion and said opposed lateral walls further define said central internal strip chamber;
and a plurality of ridges formed on outer surfaces of said opposed lateral walls of said longitudinal insertion portion and on an outer surface of said base of said longitudinal head portion.
To better understand embodiments of the invention, a detailed description follows, with references to the attached drawings, where:
2a FIGURE 1 is a ceoss-section, illustrating the shape of the elastomer strip;
FIGURE 2 is a perspective view showing the end of the strip with a valve; and FIGURE 3 is a cmss=suction of the scaling element insert~od in a joint.
As shown in these drawings and the details thercvf, but especially in Figure l, an embodiment of the invention is characterized by the fact that it includes an arrow-shaped elastomer strip (1) consisting of a triangular head (2) and a rear insertion section (3), which occupies about a third of a base (7) of said head and the rear wall of which ends in a wide angle like the two sides of a roof (4), while the lateral walls (~ are externally corrugated or ridged (6), an arrangement that is also found on the external surface of the base ('~ and the lateral seCbioas of the head (2), which, along with the insertion suction (3), have various longitudinal hollow sections defined by various interior walls (8) which are positioned at different angles to one another and to the lateral wars of the strip, thus forming an actual chamber (9), also in the shape of an arrow, for insufflation and, consequently, one end of the strip (1) is closed off or appropriately sealed, while the other (Figure Z) is fitted with a cover (10) and a valve (11), which is all that is necessary for the strip to be inserted and positioned within a given joint; as illustrated in figure 3, where it is shown that air is pumpod into the interior, so that the walls of the elastamer strip press against the adhesive applied to its sides, where said ridges considerably increase the area of adhesion and prevent the strip fmm moving while said adhesive cures.
The recess (R) in the concrete is provided in plan so that the strip remains confined within this space, and when hydraulic pressure is exerted, it will encounter lateral resistanet and will be deflected against the interior walls, thus preve~ntitig traetive stress on the i 1 concrete. It is r~nell known that concrete has little tensile strength and is approximately IO (tenj tunes more resistant to compression.
When hydraulic pressure is exerted, the strip is deformed and presses against the edQea of the concrete, distributing the compressive forces and providing a bettex perforrna~nce of tha system.
Moreover, the strip absorbs stnrcturai movements caused by traction, compression, shearing, uneven sealing and rotation.
As indk~ted, based on the foregoing explanations and iIlustradons, the object in question, "F~cpansion joint xaling element,' fully satisfies the criteria xt forth herein, since it combines and modifies known elements is a new way or in a different arrangement of its component pants, thus increasing ics efficiency, improving its perforn~ance and making it easier to use.
and a plurality of ridges formed on outer surfaces of said opposed lateral walls of said longitudinal insertion portion and on an outer surface of said base of said longitudinal head portion.
To better understand embodiments of the invention, a detailed description follows, with references to the attached drawings, where:
2a FIGURE 1 is a ceoss-section, illustrating the shape of the elastomer strip;
FIGURE 2 is a perspective view showing the end of the strip with a valve; and FIGURE 3 is a cmss=suction of the scaling element insert~od in a joint.
As shown in these drawings and the details thercvf, but especially in Figure l, an embodiment of the invention is characterized by the fact that it includes an arrow-shaped elastomer strip (1) consisting of a triangular head (2) and a rear insertion section (3), which occupies about a third of a base (7) of said head and the rear wall of which ends in a wide angle like the two sides of a roof (4), while the lateral walls (~ are externally corrugated or ridged (6), an arrangement that is also found on the external surface of the base ('~ and the lateral seCbioas of the head (2), which, along with the insertion suction (3), have various longitudinal hollow sections defined by various interior walls (8) which are positioned at different angles to one another and to the lateral wars of the strip, thus forming an actual chamber (9), also in the shape of an arrow, for insufflation and, consequently, one end of the strip (1) is closed off or appropriately sealed, while the other (Figure Z) is fitted with a cover (10) and a valve (11), which is all that is necessary for the strip to be inserted and positioned within a given joint; as illustrated in figure 3, where it is shown that air is pumpod into the interior, so that the walls of the elastamer strip press against the adhesive applied to its sides, where said ridges considerably increase the area of adhesion and prevent the strip fmm moving while said adhesive cures.
The recess (R) in the concrete is provided in plan so that the strip remains confined within this space, and when hydraulic pressure is exerted, it will encounter lateral resistanet and will be deflected against the interior walls, thus preve~ntitig traetive stress on the i 1 concrete. It is r~nell known that concrete has little tensile strength and is approximately IO (tenj tunes more resistant to compression.
When hydraulic pressure is exerted, the strip is deformed and presses against the edQea of the concrete, distributing the compressive forces and providing a bettex perforrna~nce of tha system.
Moreover, the strip absorbs stnrcturai movements caused by traction, compression, shearing, uneven sealing and rotation.
As indk~ted, based on the foregoing explanations and iIlustradons, the object in question, "F~cpansion joint xaling element,' fully satisfies the criteria xt forth herein, since it combines and modifies known elements is a new way or in a different arrangement of its component pants, thus increasing ics efficiency, improving its perforn~ance and making it easier to use.
Claims (7)
1. An expansion joint sealing element comprising:
an elongate elastomer strip having a longitudinal head portion and a longitudinal insertion portion operably connected to said longitudinal head portion such that said elongate elastomer strip is configured in cross-section to have a generally arrow shape with a first and second cross-sectional end;
said longitudinal head portion defined in cross-section by opposed panels that slope from said first cross-sectional end toward said second cross-sectional end, further comprising a base portion such that said adjacent panels of said longitudinal head portion and said base portion interact to form a generally triangular shaped head, said adjacent panels further configured to define a portion of a central internal strip chamber; and said longitudinal insertion portion defined in cross-section by opposed lateral walls extending from said base portion of said longitudinal head portion and terminating in a rear wall at said second cross-sectional end, said rear wall defined by adjacent panels sloping from said second cross-sectional end toward said first cross-sectional end such that said adjacent panels of said longitudinal insertion portion and said opposed lateral walls further define said central internal strip chamber; and a plurality of ridges formed on outer surfaces of said opposed lateral walls of said longitudinal insertion portion and on an outer surface of said base of said longitudinal head portion.
an elongate elastomer strip having a longitudinal head portion and a longitudinal insertion portion operably connected to said longitudinal head portion such that said elongate elastomer strip is configured in cross-section to have a generally arrow shape with a first and second cross-sectional end;
said longitudinal head portion defined in cross-section by opposed panels that slope from said first cross-sectional end toward said second cross-sectional end, further comprising a base portion such that said adjacent panels of said longitudinal head portion and said base portion interact to form a generally triangular shaped head, said adjacent panels further configured to define a portion of a central internal strip chamber; and said longitudinal insertion portion defined in cross-section by opposed lateral walls extending from said base portion of said longitudinal head portion and terminating in a rear wall at said second cross-sectional end, said rear wall defined by adjacent panels sloping from said second cross-sectional end toward said first cross-sectional end such that said adjacent panels of said longitudinal insertion portion and said opposed lateral walls further define said central internal strip chamber; and a plurality of ridges formed on outer surfaces of said opposed lateral walls of said longitudinal insertion portion and on an outer surface of said base of said longitudinal head portion.
2. An expansion joint sealing element as defined in claim 1 wherein said central internal strip chamber is configured in cross-section to have a generally arrow shape corresponding to said generally arrow shape of the elastomer strip.
3. An expansion joint sealing element as defined in claim 1 further comprising:
a plurality of longitudinal chambers formed within said longitudinal head portion and positioned on opposing sides of said central internal strip chamber.
a plurality of longitudinal chambers formed within said longitudinal head portion and positioned on opposing sides of said central internal strip chamber.
4. An expansion joint sealing element as defined in claim 3 wherein said plurality of longitudinal chambers are defined by corresponding interior walls such that each of said interior walls is positioned at a different angle with respect to any other of said interior walls and with respect to said opposed lateral walls of said longitudinal insertion portion.
5. An expansion joint sealing element as defined in claim 1 further comprising:
a strip cover secured to one end of said elastomer strip and a valve operable with said cover to seal said central internal strip chamber at said one end of said elastomer strip; and a means for sealing the other end of said central internal strip chamber;
wherein said valve may be utilized to inflate said central internal strip chamber with air.
a strip cover secured to one end of said elastomer strip and a valve operable with said cover to seal said central internal strip chamber at said one end of said elastomer strip; and a means for sealing the other end of said central internal strip chamber;
wherein said valve may be utilized to inflate said central internal strip chamber with air.
6. An expansion joint sealing element as defined in claim 1 wherein said base of said longitudinal head portion comprises in cross-section a left base component positioned on the left side of said central internal strip chamber and a right base component positioned on the right side of said central internal chamber, each having a width.
7. An expansion joint sealing element as defined in claim 6 wherein said longitudinal insertion portion has a cross-sectional width substantially equal to the cross-sectional width of the left and right base components.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR674,303 | 1992-09-16 | ||
| BR9204303A BR9204303A (en) | 1992-10-20 | 1992-10-20 | Ecological tube to be used in planting trees and seedlings especially eucalyptus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2106352A1 CA2106352A1 (en) | 1994-03-17 |
| CA2106352C true CA2106352C (en) | 2005-06-14 |
Family
ID=4055211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2106352 Expired - Fee Related CA2106352C (en) | 1992-09-16 | 1993-09-16 | Expansion joint sealing element |
Country Status (2)
| Country | Link |
|---|---|
| BR (1) | BR9204303A (en) |
| CA (1) | CA2106352C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR9903326A (en) * | 1999-07-19 | 2001-03-06 | Jorge Gabrielli Zacharias Cali | Sealing element for expansion joint |
-
1992
- 1992-10-20 BR BR9204303A patent/BR9204303A/en unknown
-
1993
- 1993-09-16 CA CA 2106352 patent/CA2106352C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2106352A1 (en) | 1994-03-17 |
| BR9204303A (en) | 1994-12-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |