US3702093A - Construction of concrete road with expansion joints - Google Patents

Construction of concrete road with expansion joints Download PDF

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Publication number
US3702093A
US3702093A US130627A US3702093DA US3702093A US 3702093 A US3702093 A US 3702093A US 130627 A US130627 A US 130627A US 3702093D A US3702093D A US 3702093DA US 3702093 A US3702093 A US 3702093A
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United States
Prior art keywords
cross members
members
legs
concrete
support
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Expired - Lifetime
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US130627A
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English (en)
Inventor
Guido Van De Loock
Roeland Van Overbeke
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Bekaert Cockerill SA
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Bekaert Cockerill SA
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    • 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
    • E01C11/14—Dowel assembly ; Design or construction of reinforcements in the area of joints

Definitions

  • a support apparatus for constructing a concrete road with expansion joints includes a plurality of likeoriented parallel-spaced inverted U-shaped cross members and at least one pair of support membersconnecting together the cross members with one of the support members being connected to each of the legs at an intermediate point on one side of the cross members and the other of the support members being connected to each of the opposite legs at an intermediate point on the opposite side of the cross members.
  • the support apparatus In constructing a concrete road with expansion joints the support apparatus is first placed on a roadbed in general alignment with the desired location of a particular expansion joint, self-oiling dowel bars are secured adjacent the cross members with the dowel bars resting on the support members and being aligned generally with the longitudinal axis of the road, the concrete is poured for finishing the road, and a groove is then cut in the upper portion of the concrete, prior to the time when the concrete commences to shrink, to a depth sufficient to sever the central elements connecting the legs of the inverted U-shaped cross members but not to a depth sufficient to contact the dowel bars.
  • the present invention relates to an apparatus and method for constructing a concrete road with expansion joints and to the concrete road so produced.
  • Thepins or dowel bars which are disposed at predetermined positions at certain distances from each other in the concrete sections prevent a mutual sagging of adjacent concrete sections of the road.
  • the pins are made self-oiling by coating them with an oil film or similar material such as a bituminous painting compound.
  • the steel pins or dowel bars have been supported by several techniques.
  • the pins are embedded in a narrow concrete strip with wooden shutterings and aligned with the position of the desired expansion joint.
  • the wooden shutterings are taken away and the adjoining part of the concrete road is poured using vibrators for compacting and spreading the concrete.
  • This particular technique has several disadvantages. For example, the placement and removal of the shutterings requires a considerable amount of labor. Also, the hardening time required for the concrete strips hinders the general progress of the construction operations. In addition, the connection between the concrete strips and the subsequently poured concrete is often faulty. Further, the concrete strips interfere with the passage of the vibrating needles of the concrete pouring machine.
  • a support or wire cradle which consists of wires welded together is placed along each side of the place where an expansion joint is to be formed. Thereafter, the pins or dowel bars are placed in the required positions and at the required distances from each other above the wire supports. Both supports must be precisely fixed on the under-layer of the concrete road.
  • a serious disadvantage of this particular technique is that two wire baskets must be used for each expansion joint and in addition their placement involves a considerable amount of time-consuming and precise work.
  • the support apparatus employed in the present invention for constructing a concrete road having expansion joints includes a plurality of like-oriented substantially parallel-spaced inverted generally U-shaped cross members and at least onepair of substantially parallelspaced support members disposed substantially perpendicular to the planes of the U-shaped cross members and connecting together the cross members, wherein one of the support members is connected at a point intermediate the ends of each of the legs on one side of the cross members and the other support member is connected at a point intermediate the ends of each of the legs on the other side of the cross members.
  • the method of the present invention for constructing a concrete road with expansion joints includes the steps of placing the aforementioned support apparatus on a roadbed in general alignment with the desired location of the expansion joints, prior to pouring concrete'for finishing the concrete road, securing self-oiling dowel bars adjacent the cross members with the dowel bars resting on the support members and being aligned generally with the longitudinal axis of the road, pouring concrete for finishing the road to a depth exceeding the height of the support apparatus, and cutting a groove in the upper portion of the concrete prior to the time when the concrete commences to shrink to a depth sufficient to sever the central elements connecting the legs of the cross members but not to a sufficient depth to contact the dowel bars.
  • FIG. 1 is a side-elevational view of a preferred embodiment of a support section of the present invention with its corresponding dowel bar;
  • FIG. 2 is a perspective view of a preferred embodiment of a section of a support apparatus of the present invention and corresponding dowel bars;
  • FIG. 3 is a partial cross section of a concrete road at the location of an expansion joint embodying a modification of the support apparatus of FIGS. 1 and 2.
  • FIG. 4 is a schematic top plan view of FIG. 3, but shown on a reduced scale.
  • FIG. 5 is a transverse cross section of FIG. 3, but shown on a reduced scale, taken along the line of the expansion joint.
  • the support apparatus 3 of the present invention includes a plurality of inverted generally U-shaped cross elements 4 which are welded together with a pair of longitudinal support members 5 and a pair of longitudinal support members 6.
  • Each U-shaped cross element 4 includes a central or middle part or element 7 and two legs 8 connected at one of their ends to central element 7.
  • the legs 8 are tapered slightly outwardly from top to bottom.
  • Each of the legs 8 at its other end is'connected to an arm9 disposed substantially parallel to the central element 7 and extendingina direction outwardly from central element 7.
  • the two longitudinal support members reinforce the arms 9 which are attached to the legs 8.
  • the support members. 5 are disposed horizontal and parallel to each other substantially perpendicular to the planes of the cross members-4.
  • One of the support members 5 is connected to each of-the arms 9 on one side of support affixed horizontally and parallel. to each other at an equal distance under the central element 7.
  • the horizontal support members 6 serve to support the steel pins or-dowel bars 10.
  • the pair of support members 6 are disposed substantially-perpendicular to the planes of the U-shaped cross members 4 with one of the support members 6 being connected to each of the legs 8 on one side of support apparatus.
  • the support apparatus 3 thus includes a plurality of substantially parallel-spaced cross members 4 which are each generally oriented in the same direction as the others of the cross members 4.
  • the cross elements 4 constructed in this way facilitate a quick and stable placing of the support apparatus 3 on the under-layer 2 of the concrete road.
  • the pins or dowel bars 10 can easily and quickly be affixed or secured on the support apparatus 3 by resting them in the corners between the cross members 4 and the longitudinal support members 6 and can be fixed in an adjustable manner .in these corners, for example, by means of binding wire.
  • the dowel bars 10 are normally pre-coated with an oil or grease coating.
  • the longitudinal support members 6 are affixed ata predetermined distance below the central element 7 so as to provide a sufficient spacing between central element 7 and the top of the dowel bars 10 to accomplish the purposes of the present invention as will be described hereinafter in further detail.
  • the support apparatus 3 is first placed on the underlayer or roadbed 2 .in general alignment with the desired" location of the expansion joint to be formed, prior to pouring the concrete for finishing the concrete road.
  • the elongated support members 6 are aligned generally parallel with the desired expansion joint 1, with one support member 6 being disposed on one side of the planned expansion joint 1 and the other support member 6 being disposed on the other side of the planned expansion joint 1.
  • the pinsor dowel bars 10 are then placed adjacent to each cross member 4 with each dowel bar resting on the support members 6 and being generally aligned withthe longitudinal axis of the road.
  • the concrete is poured over the under-layer or roadbed Ito the desired height
  • a groove 11 of sufficient width and depth B is made or cut into the concrete in the upper layer of the concrete above the middle, or approximately, the middle of the pins or dowel bars 10.
  • central element 7 of support apparatus 3 is transversely severed or cut. in this way when the shrinking of the concrete occurs during its hardening process, the required expansion joint l-originates along the line where support apparatus 3 with pins or dowel bars 10 has been placed.
  • the support apparatus of the presentinvention may includemore than one pair of longitudinal support members, i.e., other than the pair of support members 6, and
  • cross section of cross members 4 may be varied, it is an essential feature of the present invention that in making the groove 11," the support apparatus 3 be longitudinally severed along the transverse axis of the central elements 7 of the cross members 4.
  • a further advantage of the present invention is a substantial savings in construction materials.
  • the present invention also permits the concrete pouring machine with its vibrating needles to pass without interference over each row of pins to a greater degree than in the case of certain prior art techniques.
  • the two support structures reinforce the concrete against undesired crack formation at the corresponding ends of the two respective sections.
  • the present structure also provides connections between the adjacent concrete sections through pins permitting longitudinal shifting of 'thetwo adjacent concrete sections while preventing mutual sagging of adjacent concrete'sections of the road.
  • the design of the present invention provides an absolutely accurate and simple technique for fixing the pins in the support angles formed by the cross members 4 and the longitudinal support members 6.
  • the support apparatus 3 as shown in the figures may be stacked and very easily transported in a compact form.
  • the longitudinal support members 6 may be welded to the U-shaped cross members 4 on the interior side of the U, as contrasted with the design shown in the figures in which the support members 6 are welded on the exterior surface of the U- shaped cross members 4.
  • spot welds may be made at a higher pressure than normal so that the wires at the cross over points are compressed completely into one another and so that the spot weld is not thicker than the wire diameter.
  • a method for constructing a concrete road with expansion joints which comprises placing a support apparatus on a roadbed in general alignment with the desired location of an expansion joint prior to pouring concrete for finishing the concrete road,
  • said support apparatus including a plurality of substantially parallel-spaced inverted generally U- shaped cross members, each of said U-shaped cross members including a first leg on one side, a second leg on the other side and a central element connecting said legs and being generally oriented in the same direction as the others of said cross members, and a pair of substantially parallelspaced support members disposed substantially perpendicular to the planes of said U-shaped cross members and connecting together said cross members, one of said support members being connected to each of said first legs at a point intermediate the ends of said first legs and the other of said support members being connected to said second legs at a point intermediate the ends of said second legs, I
  • support members being aligned generally parallel with the desired expansion joint with one support member being disposed on one side and the other support member being disposed on the other side thereof, securing a self-oiling dowel bar adjacent essentially each U-shaped cross member, said dowel bars resting on said support members and being aligned generally with the longitudinal axis of said road,
  • each of said legs at its other end has an arm connected thereto disposed substantially parallel to said central element and extending in a direction outwardly from said central element.
  • the invention of claim 2 including a second pair of substantially parallel-spaced support members disposed substantially perpendicular to the planes of said U-shaped cross members and connecting together said cross members, one of said second pair of support members being connected to each of the arms on one side of the cross members and the other of said second pair of support members being connected to each of the arms on the other side of the cross members.
  • H the height at which the lower edge of the dowel bars are supported above the roadbed
  • D the diameter of the dowel bars
  • B the depth of the groove
  • C the height of the central elements of the cross members above the roadbed.
  • a support apparatus placed on a roadbed in general alignment with the location of each expansion joint and embedded in said concrete road said support apparatus including a plurality of substantially parallel-spaced inverted generally U- shaped cross members, each of said U-shaped cross members including a first leg on one side, a second leg on the other side and a central element connecting said legs and being generally oriented in the same direction as the others of said cross members, and a pair of substantially parallelspaced support members disposed substantially perpendicular to the planes of said U-shaped cross members and connecting together said cross members, one of said support members being connected to each of said first legs at a point intermediate the ends of said first legs and the other of said support members being connected to said second legs at a point intermediate the ends of said second legs, I
  • support members being aligned generally parallel with the expansion joint with one support member being disposed on one side and the other support member being disposed on the other side thereof,
  • each of said legs said U-shaped cross members and connecting together at its other end has an arm connected thereto disposed substantially parallel to said central element and exsaid cross members, one of said second pair of support members being connected to each of the arms on one side of the cross members and the other of said second pair of support members being connected to each of the arms on the other side of the cross members.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
US130627A 1970-04-03 1971-04-02 Construction of concrete road with expansion joints Expired - Lifetime US3702093A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7004773A NL7004773A (enrdf_load_stackoverflow) 1970-04-03 1970-04-03

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US3702093A true US3702093A (en) 1972-11-07

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US130627A Expired - Lifetime US3702093A (en) 1970-04-03 1971-04-02 Construction of concrete road with expansion joints

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US (1) US3702093A (enrdf_load_stackoverflow)
JP (1) JPS5038255B1 (enrdf_load_stackoverflow)
BE (1) BE751958A (enrdf_load_stackoverflow)
DE (1) DE2116176A1 (enrdf_load_stackoverflow)
FR (1) FR2085818A1 (enrdf_load_stackoverflow)
LU (1) LU62910A1 (enrdf_load_stackoverflow)
NL (1) NL7004773A (enrdf_load_stackoverflow)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4996816A (en) * 1989-10-06 1991-03-05 Wiebe Jacob R Support for elongate members in a poured layer
US5190395A (en) * 1992-02-12 1993-03-02 Silicone Specialties, Inc. Expansion joint method and system
US5241946A (en) * 1992-04-16 1993-09-07 Target Products, Inc. Saw for green and cured concrete
WO1994013906A1 (en) * 1992-12-17 1994-06-23 Joensson Sven Gunnar Device for joints in concrete floors
US5492431A (en) * 1994-03-01 1996-02-20 Concrete Textures, Inc. Methods for cutting aligned sets of slots in pavement
US5582899A (en) * 1986-03-25 1996-12-10 Chiuminatta; Edward Concrete surface with early cut grooves
US5823709A (en) * 1996-07-09 1998-10-20 The Tensar Corporation Interconnected block system
US5911539A (en) * 1996-07-09 1999-06-15 The Tensar Corporation Interconnected block system
US6039503A (en) * 1998-01-29 2000-03-21 Silicone Specialties, Inc. Expansion joint system
WO2000061869A1 (en) * 1999-04-14 2000-10-19 Shaw Ronald D Concrete dowel slip tube with clip
US6171016B1 (en) * 1998-10-20 2001-01-09 Concrete Systems, Inc. Tubular reinforcing dowel system and method
US6745532B1 (en) * 1998-07-07 2004-06-08 Vazquez Ruiz Del Arbol Jose Ramon Process for the articulated imbrication of concrete slabs ¢i(in situ)
US20080008527A1 (en) * 2006-07-06 2008-01-10 Diamond Surface, Inc. Close proximity grinder
US20080205983A1 (en) * 2007-02-22 2008-08-28 Diamond Surface, Inc. Slot cutting apparatus
US8511935B1 (en) 2012-02-10 2013-08-20 James Thomas Pavement dowel assembly bar
US20160097169A1 (en) * 2014-10-01 2016-04-07 Power Brace LLC Composite hoop tie for concrete
US20170002524A1 (en) * 2015-07-01 2017-01-05 University-Industry Cooperation Group Of Kyung Hee University Transformed continuously reinforced concrete pavement structure using short reinforcing bar and crack induction
CN110656547A (zh) * 2019-09-25 2020-01-07 太仓标美海绵城市科技有限公司 一种混凝土道路施工的方法
US10870985B2 (en) * 2017-05-03 2020-12-22 Illinois Tool Works Inc. Concrete slab load transfer and connection apparatus and method of employing same
US11203840B2 (en) 2019-06-25 2021-12-21 Illinois Tool Works Inc. Method and apparatus for two-lift concrete flatwork placement
US11208772B2 (en) 2016-01-21 2021-12-28 Surface Preparation Technologies, Llc Reduced volume sonic noise alert pattern grinder and method
US20230061463A1 (en) * 2021-07-12 2023-03-02 Illinois Tool Works Inc. Joint edge protection apparatus - fully bridged wave plates

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963447U (ja) * 1982-10-20 1984-04-26 松下電器産業株式会社 混成集積回路
EP0119663A3 (fr) * 1983-03-22 1986-01-29 Mario Ravone Procédé de réalisation d'un joint antitassement
JPS6395174U (enrdf_load_stackoverflow) * 1986-12-09 1988-06-20
FR3114822B1 (fr) * 2020-10-02 2022-08-19 Soc Nouvelle Sotralentz Construction Paniers Porte Goujons

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2079123A (en) * 1935-10-12 1937-05-04 Louis J Lind Dowel structure for concrete roadways
US2150982A (en) * 1936-06-26 1939-03-21 Sheffield Steel Corp Expansion and contraction joint
US2521643A (en) * 1947-06-24 1950-09-05 Atlas Materials Inc Load transfer assembly
US2531552A (en) * 1946-12-12 1950-11-28 American Steel & Wire Co Transload device
US2864289A (en) * 1954-06-03 1958-12-16 Universal Form Clamp Co Continuous dowel bar support
US3397626A (en) * 1967-03-09 1968-08-20 Republic Steel Corp Plastic coated dowel bar for concrete
US3437017A (en) * 1964-08-05 1969-04-08 Baustahlgewebe Gmbh Reinforced concrete road construction

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2079123A (en) * 1935-10-12 1937-05-04 Louis J Lind Dowel structure for concrete roadways
US2150982A (en) * 1936-06-26 1939-03-21 Sheffield Steel Corp Expansion and contraction joint
US2531552A (en) * 1946-12-12 1950-11-28 American Steel & Wire Co Transload device
US2521643A (en) * 1947-06-24 1950-09-05 Atlas Materials Inc Load transfer assembly
US2864289A (en) * 1954-06-03 1958-12-16 Universal Form Clamp Co Continuous dowel bar support
US3437017A (en) * 1964-08-05 1969-04-08 Baustahlgewebe Gmbh Reinforced concrete road construction
US3397626A (en) * 1967-03-09 1968-08-20 Republic Steel Corp Plastic coated dowel bar for concrete

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666939A (en) * 1986-03-25 1997-09-16 Chiuminatta; Edward Soft concrete saw
US5803071A (en) * 1986-03-25 1998-09-08 Chiuminatta Concrete Concepts, Inc. Soft concrete saw
US5582899A (en) * 1986-03-25 1996-12-10 Chiuminatta; Edward Concrete surface with early cut grooves
US4996816A (en) * 1989-10-06 1991-03-05 Wiebe Jacob R Support for elongate members in a poured layer
US5190395A (en) * 1992-02-12 1993-03-02 Silicone Specialties, Inc. Expansion joint method and system
US5241946A (en) * 1992-04-16 1993-09-07 Target Products, Inc. Saw for green and cured concrete
WO1994013906A1 (en) * 1992-12-17 1994-06-23 Joensson Sven Gunnar Device for joints in concrete floors
US5492431A (en) * 1994-03-01 1996-02-20 Concrete Textures, Inc. Methods for cutting aligned sets of slots in pavement
US5823709A (en) * 1996-07-09 1998-10-20 The Tensar Corporation Interconnected block system
US5911539A (en) * 1996-07-09 1999-06-15 The Tensar Corporation Interconnected block system
US6039503A (en) * 1998-01-29 2000-03-21 Silicone Specialties, Inc. Expansion joint system
US6745532B1 (en) * 1998-07-07 2004-06-08 Vazquez Ruiz Del Arbol Jose Ramon Process for the articulated imbrication of concrete slabs ¢i(in situ)
US6171016B1 (en) * 1998-10-20 2001-01-09 Concrete Systems, Inc. Tubular reinforcing dowel system and method
WO2000061869A1 (en) * 1999-04-14 2000-10-19 Shaw Ronald D Concrete dowel slip tube with clip
US20080008527A1 (en) * 2006-07-06 2008-01-10 Diamond Surface, Inc. Close proximity grinder
US7837276B2 (en) 2006-07-06 2010-11-23 Diamond Surface, Inc. Close proximity grinder
US20110062767A1 (en) * 2006-07-06 2011-03-17 Diamond Surface, Inc. Close proximity grinder
US8025342B2 (en) 2006-07-06 2011-09-27 Diamond Surface, Inc. Close proximity grinder
US20080205983A1 (en) * 2007-02-22 2008-08-28 Diamond Surface, Inc. Slot cutting apparatus
US8511935B1 (en) 2012-02-10 2013-08-20 James Thomas Pavement dowel assembly bar
US9540775B2 (en) * 2014-10-01 2017-01-10 Power Brace LLC Composite hoop tie for concrete
US20160097169A1 (en) * 2014-10-01 2016-04-07 Power Brace LLC Composite hoop tie for concrete
US20170002524A1 (en) * 2015-07-01 2017-01-05 University-Industry Cooperation Group Of Kyung Hee University Transformed continuously reinforced concrete pavement structure using short reinforcing bar and crack induction
US9938671B2 (en) * 2015-07-01 2018-04-10 University-Industry Cooperation Group Of Kyung Hee University Reinforced concrete pavement structure with crack induction part
US11208772B2 (en) 2016-01-21 2021-12-28 Surface Preparation Technologies, Llc Reduced volume sonic noise alert pattern grinder and method
US10870985B2 (en) * 2017-05-03 2020-12-22 Illinois Tool Works Inc. Concrete slab load transfer and connection apparatus and method of employing same
US11692347B2 (en) 2017-05-03 2023-07-04 Illinois Tool Works Inc. Concrete slab load transfer and connection apparatus and method of employing same
US11203840B2 (en) 2019-06-25 2021-12-21 Illinois Tool Works Inc. Method and apparatus for two-lift concrete flatwork placement
CN110656547A (zh) * 2019-09-25 2020-01-07 太仓标美海绵城市科技有限公司 一种混凝土道路施工的方法
US20230061463A1 (en) * 2021-07-12 2023-03-02 Illinois Tool Works Inc. Joint edge protection apparatus - fully bridged wave plates

Also Published As

Publication number Publication date
BE751958A (nl) 1970-11-16
FR2085818A1 (enrdf_load_stackoverflow) 1971-12-31
JPS5038255B1 (enrdf_load_stackoverflow) 1975-12-08
LU62910A1 (enrdf_load_stackoverflow) 1971-08-26
NL7004773A (enrdf_load_stackoverflow) 1971-10-05
DE2116176A1 (de) 1972-01-13

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