US3334558A - Concrete joint form - Google Patents
Concrete joint form Download PDFInfo
- Publication number
- US3334558A US3334558A US458117A US45811765A US3334558A US 3334558 A US3334558 A US 3334558A US 458117 A US458117 A US 458117A US 45811765 A US45811765 A US 45811765A US 3334558 A US3334558 A US 3334558A
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- US
- United States
- Prior art keywords
- concrete
- walls
- joint form
- concrete joint
- portions
- 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 - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/10—Packing of plastic or elastic materials, e.g. wood, resin
- E01C11/106—Joints with only prefabricated packing; Packings therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
- Y10S425/044—Rubber mold
Definitions
- the present invention relates generally to concrete pavement and more particularly to a concrete joint form for use therein.
- weakened planes whereby any fracture or cleavage will take place along controlled planes.
- Such weakened planes have, for example, been formed by providing an open groove in the concrete paving, by embedding strips of material in the concrete paving, or by cutting the concrete after it has hardened.
- a removable form or filler should be inserted in the groove during or just after a paving operation to cover or protect the groove.
- Such a form could also include means for sealing the groove whereby the groove remains sealed during thetime the lining is exposed to the elements.
- FIGURE 1 is a perspective view showing a concrete pavement incorporating a concrete joint form in accordance with the invention
- FIGURE 2 is an elongated view of the concrete joint form of FIGURE 1;
- FIGURE 3 shows the concrete joint form with theconcrete developing a cleavage plane
- FIGURE 4 shows the concrete joint form installed with the concrete at the joint separated
- FIGURE 5 shows a joint having the form removed and sealed with a seal and mastic.
- FIGURE 1 shows a concrete pavement 11 having a concrete joint form 12 installed therein.
- the concrete joint form includes a top wall 13 formed of first and second substantially coplanar portions 16 and 17.
- the concrete joint form includes downwardly depending side walls 18 and 19 which may be formed from .a single piece of material and which are substantially V-shaped. The distal ends are joined along a longitudinal edge 21. This forms a point along which there is stress concentration and provides for cracking or cleavage of the concrete substantially along this edge.
- the upper wall portions 16 and 17 extend beyond the side 'walls 18 and 19 to form wings 26 and 27.
- the wings taper and have a rather sharp feathered edge for purposes to be presently described.
- the aligned adjacent portions of the upper walls abut one an other.
- the upper walls are upset downwardly to provide spaced opposed abutments 28 and 29.
- One of the fins is shown upset, 33, to provide an abutment for the distal end of the fin 31. It is apparent that both fins might be upset, if desired, to provide a greater abutting surface.
- FIGURES 3 and 4 it is seen that the feathered edges of the upper walls are slightly embedded in the concrete whereby the complete form is held in the groove formed in the pavement.
- the pavement is expanded and the abutting edges of the upper wall and the fins are in abutment and provide strength against further collapse of the concrete form.
- the concrete is shown as contracting and separating. It is seen that the V-shaped outer walls open up and close to accommodate expansion and contraction of the pavement while maintaining a seal.
- the concrete joint form may be formed by a single extrusion.
- the joint form may be made of a rather rigid thermoplastic material such as polyester.
- FIGURE 5 the form is shown removed from the concrete and a butyl rubber sealing member 36 inserted at the bottom of the V-shaped groove.
- the upper portion of the groove is filled with a mastic material 37, the seal 36 serving to retain the mastic material and to provide a weather-tight seal.
- the plastic concrete joint form may be permanently placed and serve the function of sealing the concrete.
- the form is inexpensive, durable and light.
- a concrete joint form for placement in a concrete slab to form a weaknened plane comprising a top wall including first and second adjacent aligned substantially coplanar portions, a pair of spaced side walls, one of said walls depending downwardly from each of said portions, said walls tapering towards one another and joined at their distal ends to form a continuous longitudinal edge spaced downwardly from said top wall, a pair of fins extending inwardly from each of said walls and arranged to have their digital ends abut one another to maintain the spacing of said wall.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Road Repair (AREA)
Description
8, 1967 R. N. ATKINSON 3,334,558
CONCRETE JOINT FORM Filed May 24, 1965 I N\ "ENTOR.
RAY N. ATKINSON BY ATTORNEYS United States Patent 3,334,558 CONCRETE JOINT FORM Ray N. Atkinson, Hillsborough, Calif, assignor to Guy F.
Atkinson Company, San Francisco, Calif., a corporation of Nevada Filed May 24, 1965, Ser. No. 458,117 4 Claims. (CI. 9418) The present invention relates generally to concrete pavement and more particularly to a concrete joint form for use therein.
In the construction of canal linings, roadways, airport runways and other paved surfaces, it is common to provide weakened planes whereby any fracture or cleavage will take place along controlled planes. Such weakened planes have, for example, been formed by providing an open groove in the concrete paving, by embedding strips of material in the concrete paving, or by cutting the concrete after it has hardened.
In certain instances as, for example, in canal linings, it may be desirable to form a groove which is sealed with a rubber rod and mastic cement just prior to filling the canal with water. When such a lining is allowed to stand exposed for any period of time, the elements will cause dust, dirt, sand and the like to collect in the groove and to fill the same. Furthermore, as the lining contracts and expands, it will, of course, fracture along these weakened planes, and weeds and the like may grow through the pavement from the earth underneath. Thus, prior to performing the sealing operation, it becomes necessary to clean the groove as, for example, by sandblasting, scraping or the like.
It has been suggested that a removable form or filler should be inserted in the groove during or just after a paving operation to cover or protect the groove. Such a form could also include means for sealing the groove whereby the groove remains sealed during thetime the lining is exposed to the elements. In certain instances, it may be desirable merely to provide a concrete joint form and leave the same in place as a permanent filler or sealer.
It is a general object of the present invention to provide an improved concrete joint form for use in paved concrete surfaces.
It is another object of the present invention to provide a concrete joint form which is light, strong and economical.
It is still a further object of the present invention to provide a concrete joint form which is capable of temporarily or permanently sealing a groove formed in concrete pavement.
The foregoing and other objects of the invention will become more clearly apparent from the following description taken in conjunction with the accompanying drawing.
Referring to the drawing:
FIGURE 1 is a perspective view showing a concrete pavement incorporating a concrete joint form in accordance with the invention;
FIGURE 2 is an elongated view of the concrete joint form of FIGURE 1;
FIGURE 3 shows the concrete joint form with theconcrete developing a cleavage plane;
FIGURE 4 shows the concrete joint form installed with the concrete at the joint separated; and
FIGURE 5 shows a joint having the form removed and sealed with a seal and mastic.
'ice
Referring to the drawing, FIGURE 1 shows a concrete pavement 11 having a concrete joint form 12 installed therein. Referring more particularly to FIGURES 1 and 2, the concrete joint form includes a top wall 13 formed of first and second substantially coplanar portions 16 and 17. The concrete joint form includes downwardly depending side walls 18 and 19 which may be formed from .a single piece of material and which are substantially V-shaped. The distal ends are joined along a longitudinal edge 21. This forms a point along which there is stress concentration and provides for cracking or cleavage of the concrete substantially along this edge.
The upper wall portions 16 and 17 extend beyond the side ' walls 18 and 19 to form wings 26 and 27. The wings taper and have a rather sharp feathered edge for purposes to be presently described.
During expansion and contraction of the concrete, the aligned adjacent portions of the upper walls abut one an other. To provide a large abutment surface, the upper walls are upset downwardly to provide spaced opposed abutments 28 and 29. Again, to add strength to the spaced walls, there may be provided inwardly extending interior fins 31 and 32 on opposed portions of the spaced walls. One of the fins is shown upset, 33, to provide an abutment for the distal end of the fin 31. It is apparent that both fins might be upset, if desired, to provide a greater abutting surface.
Referring more specifically to FIGURES 3 and 4, it is seen that the feathered edges of the upper walls are slightly embedded in the concrete whereby the complete form is held in the groove formed in the pavement. As shown in FIGURE 3, the pavement is expanded and the abutting edges of the upper wall and the fins are in abutment and provide strength against further collapse of the concrete form. In FIGURE 4, the concrete is shown as contracting and separating. It is seen that the V-shaped outer walls open up and close to accommodate expansion and contraction of the pavement while maintaining a seal.
The concrete joint form may be formed by a single extrusion. The joint form may be made of a rather rigid thermoplastic material such as polyester.
Referring now to FIGURE 5, the form is shown removed from the concrete and a butyl rubber sealing member 36 inserted at the bottom of the V-shaped groove. The upper portion of the groove is filled with a mastic material 37, the seal 36 serving to retain the mastic material and to provide a weather-tight seal. It is, of course, apparent that in certain instances, the plastic concrete joint form may be permanently placed and serve the function of sealing the concrete.
Thus, it is seen that there is provided an improved concrete joint form. The form is inexpensive, durable and light.
I claim:
1. A concrete joint form for placement in a concrete slab to form a weaknened plane comprising a top wall including first and second adjacent aligned substantially coplanar portions, a pair of spaced side walls, one of said walls depending downwardly from each of said portions, said walls tapering towards one another and joined at their distal ends to form a continuous longitudinal edge spaced downwardly from said top wall, a pair of fins extending inwardly from each of said walls and arranged to have their digital ends abut one another to maintain the spacing of said wall.
2. A concrete joint form as in claim 1 wherein the ment.
3. A concrete joint form as in claim 2 wherein said upper walls extend beyond the side Walls to provide Wings.
4. A concrete form as in claim 1 wherein at least one edge of said inwardly extending fins is upset to form an abutment.
References Cited UNITED STATES PATENTS 2,230,688 2/1941 Irwin 9418 2,619,884 12/1952 Jacobson 94-18 3,136,022 6/1964 DOhI'Bn 9418 3,145,503 8/1964 Brechin 9418 JACOB L. NACKENOFF, Primary Examiner.
Claims (1)
1. A CONCRETE JOINT FORM FOR PLACEMENT IN A CONCRETE SLAB TO FORM A WEAKNENED PLANE COMPRISING A TOP WALL INCLUDING FIRST AND SECOND ADJACENT ALIGNED SUBSTANTIALLY COPLANAR PORTIONS, A PAIR OF SPACED SIDES WALLS, ONE OF SAID WALLS DEPENDING DOWNWARDLY FROM EACH OF SAID PORTIONS, SAID WALLS TAPERING TOWARDS ONE ANOTHER AND JOINED AT THEIR DISTAL ENDS TO FORM A CONTINUOUS LONGITUDINAL EDGE SPACED DOWNWARDLY FROM SAIT TOP WALL, A PAIR OF FINS EXTENDING INWARDLY FROM EACH OF SAID WALLS AND ARRANGED TO HAVE THEIR DIGITAL ENDS ABUT ONE ANOTHER TO MAINTAIN THE SPACING OF SAID WALL.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US458117A US3334558A (en) | 1965-05-24 | 1965-05-24 | Concrete joint form |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US458117A US3334558A (en) | 1965-05-24 | 1965-05-24 | Concrete joint form |
Publications (1)
Publication Number | Publication Date |
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US3334558A true US3334558A (en) | 1967-08-08 |
Family
ID=23819426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US458117A Expired - Lifetime US3334558A (en) | 1965-05-24 | 1965-05-24 | Concrete joint form |
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Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3491499A (en) * | 1968-04-08 | 1970-01-27 | Flexicore Co | Deck of concrete slabs and method of making the same |
US3527009A (en) * | 1969-01-10 | 1970-09-08 | Lawrence M Nyquist | Expansion joint seal |
US3536562A (en) * | 1967-03-23 | 1970-10-27 | Thiokol Chemical Corp | Process for forming bonded polymeric sealant filled expansion joints |
US3589664A (en) * | 1968-01-11 | 1971-06-29 | William F Middlestadt | Reusable structure for forming joints in concrete |
FR2104927A1 (en) * | 1970-09-07 | 1972-04-28 | Specialties Const | |
US3827204A (en) * | 1972-03-14 | 1974-08-06 | Thiokol Chemical Corp | Sealed joint for sectionalized flooring and method of making the same |
US3866384A (en) * | 1972-09-25 | 1975-02-18 | Harry A Peterson Company Inc | Method of forming crack control slots |
US4198176A (en) * | 1978-09-22 | 1980-04-15 | Delta National, Inc. | Concrete expansion joint forming structure |
DE2948543A1 (en) * | 1979-12-03 | 1981-06-04 | Mannesmann AG, 4000 Düsseldorf | Water duct concrete lining watertight joint - is wedge shaped with clinging elastic sealant in part above clamped cross inlay |
US4341007A (en) * | 1977-05-18 | 1982-07-27 | General Electric Company | Method of roller inserting filler material in crevices |
US6253514B1 (en) * | 1998-06-08 | 2001-07-03 | Mark Jobe | Pre-cured caulk joint system |
DE10002866A1 (en) * | 2000-01-24 | 2001-08-16 | Reiner Ulbrich | Joint gap filling profile for floors serving for air cushion transport has a vertical section extending into the joint gap, and a horizontal section filling the top broadened zone of the joint gap |
US6491468B1 (en) | 1997-08-12 | 2002-12-10 | Sealex, Inc. | Foam backed joint seal system |
US20040200167A1 (en) * | 2001-06-12 | 2004-10-14 | Eric Isaac | Extruded connecting profile |
US20050019532A1 (en) * | 2003-06-03 | 2005-01-27 | Hall David R. | Filler for architectural panel joints and tool |
EP2098651A2 (en) | 2008-03-03 | 2009-09-09 | SK Wiegrink Beteiligungs GmbH | Joint sealing profile and method for its production |
US20090266020A1 (en) * | 2006-11-14 | 2009-10-29 | Srb Construction Technologies Pty Ltd. | Moulded panel joint caulking means |
US20140123593A1 (en) * | 2005-03-08 | 2014-05-08 | City University Of Hong Kong | Structural members with improved ductility and method for making same |
US8950154B1 (en) * | 2011-06-21 | 2015-02-10 | Scott William Casey | SR thermal break device and method of use |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2230688A (en) * | 1939-03-09 | 1941-02-04 | Goodrich Co B F | Expansion joint |
US2619884A (en) * | 1949-07-21 | 1952-12-02 | James H Jacobson | Joint for concrete slabs and the like |
US3136022A (en) * | 1960-12-12 | 1964-06-09 | Rotuba Extruders Inc | Joint forming device |
US3145503A (en) * | 1961-06-27 | 1964-08-25 | Gordon L Brechin | Joint water stop |
-
1965
- 1965-05-24 US US458117A patent/US3334558A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2230688A (en) * | 1939-03-09 | 1941-02-04 | Goodrich Co B F | Expansion joint |
US2619884A (en) * | 1949-07-21 | 1952-12-02 | James H Jacobson | Joint for concrete slabs and the like |
US3136022A (en) * | 1960-12-12 | 1964-06-09 | Rotuba Extruders Inc | Joint forming device |
US3145503A (en) * | 1961-06-27 | 1964-08-25 | Gordon L Brechin | Joint water stop |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3536562A (en) * | 1967-03-23 | 1970-10-27 | Thiokol Chemical Corp | Process for forming bonded polymeric sealant filled expansion joints |
US3589664A (en) * | 1968-01-11 | 1971-06-29 | William F Middlestadt | Reusable structure for forming joints in concrete |
US3491499A (en) * | 1968-04-08 | 1970-01-27 | Flexicore Co | Deck of concrete slabs and method of making the same |
US3527009A (en) * | 1969-01-10 | 1970-09-08 | Lawrence M Nyquist | Expansion joint seal |
FR2104927A1 (en) * | 1970-09-07 | 1972-04-28 | Specialties Const | |
US3827204A (en) * | 1972-03-14 | 1974-08-06 | Thiokol Chemical Corp | Sealed joint for sectionalized flooring and method of making the same |
US3866384A (en) * | 1972-09-25 | 1975-02-18 | Harry A Peterson Company Inc | Method of forming crack control slots |
US4341007A (en) * | 1977-05-18 | 1982-07-27 | General Electric Company | Method of roller inserting filler material in crevices |
US4198176A (en) * | 1978-09-22 | 1980-04-15 | Delta National, Inc. | Concrete expansion joint forming structure |
DE2948543A1 (en) * | 1979-12-03 | 1981-06-04 | Mannesmann AG, 4000 Düsseldorf | Water duct concrete lining watertight joint - is wedge shaped with clinging elastic sealant in part above clamped cross inlay |
US6491468B1 (en) | 1997-08-12 | 2002-12-10 | Sealex, Inc. | Foam backed joint seal system |
US6253514B1 (en) * | 1998-06-08 | 2001-07-03 | Mark Jobe | Pre-cured caulk joint system |
DE10002866A1 (en) * | 2000-01-24 | 2001-08-16 | Reiner Ulbrich | Joint gap filling profile for floors serving for air cushion transport has a vertical section extending into the joint gap, and a horizontal section filling the top broadened zone of the joint gap |
DE10002866B4 (en) * | 2000-01-24 | 2008-02-07 | Sk Wiegrink Beteiligungs Gmbh | Method for producing a joint filling profile |
US20040200167A1 (en) * | 2001-06-12 | 2004-10-14 | Eric Isaac | Extruded connecting profile |
US7458190B2 (en) * | 2001-06-12 | 2008-12-02 | Hilltech Holdings S.A. | Extruded connecting profile |
US20050019532A1 (en) * | 2003-06-03 | 2005-01-27 | Hall David R. | Filler for architectural panel joints and tool |
US20140123593A1 (en) * | 2005-03-08 | 2014-05-08 | City University Of Hong Kong | Structural members with improved ductility and method for making same |
US8997437B2 (en) * | 2005-03-08 | 2015-04-07 | City University Of Hong Kong | Structural members with improved ductility and method for making same |
US20090266020A1 (en) * | 2006-11-14 | 2009-10-29 | Srb Construction Technologies Pty Ltd. | Moulded panel joint caulking means |
EP2098651A2 (en) | 2008-03-03 | 2009-09-09 | SK Wiegrink Beteiligungs GmbH | Joint sealing profile and method for its production |
DE102008012302A1 (en) | 2008-03-03 | 2009-09-10 | Sk Wiegrink Beteiligungs Gmbh | Joint filling profile and method for its production |
US8950154B1 (en) * | 2011-06-21 | 2015-02-10 | Scott William Casey | SR thermal break device and method of use |
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