US3437017A - Reinforced concrete road construction - Google Patents

Reinforced concrete road construction Download PDF

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Publication number
US3437017A
US3437017A US477672A US3437017DA US3437017A US 3437017 A US3437017 A US 3437017A US 477672 A US477672 A US 477672A US 3437017D A US3437017D A US 3437017DA US 3437017 A US3437017 A US 3437017A
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Prior art keywords
slab
rods
gaps
concrete
longitudinal
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Expired - Lifetime
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US477672A
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English (en)
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Paul Otto Kurt Walz
Andreas Van Schyndel
Max Pasberg
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Baustahlgewebe GmbH
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Baustahlgewebe GmbH
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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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/04—Mats

Definitions

  • the intermediate regions serve as cushioning zones of the slab in cooperation with socalled false equalizing gaps in the form of transverse grooves provided in at least the upper surface of the slab at a position midway within said regions, said grooves defining fracture lines in the concrete.
  • the longitudinal rod sections coincident with said intermediate regions are fitted with means, such as adhesion-resistant coatings, to provide for slidable engagement therebetween and the surrounding concrete, to thereby act 'as anchoring dowels for the concrete bodies on either side of gaps formed upon initially subjecting the slab to a predetermined longitudinal stress in traffic.
  • the present invention relates to concrete road construction, more particularly to improvements in reinforced concrete road strips, slabs or plates provided with spaced gaps or weakened areas transverse of the longitudinal direction of the slabs, more particularly of the type known as false gaps in the art.
  • reinforcing inserts such as steel mats or the like structures
  • concrete road slabs or plates has the purpose to prevent or minimize the formation of cracks or fissures caused by longitudinal tensile stress or loads to which the slabs are subjected during use in trafiic.
  • the formation of cracks may be avoided or held within permissible limits by the assurance of an efficient and uniform connecting joint or adhesion between the concrete and the reinforcing structures or members throughout the entire length of the slabs or plates.
  • the normal reinforcements of the concrete are omitted or completely interrupted at or in the vicinity of the gaps, in an effort not to impede or prevent the formation of the gaps by the presence or effect of the reinforcing members or inserts.
  • the portions of the slabs or plates on the opposite sides of the gaps providing a fracturing line, m'ay be connected by dowels or the like connecting members disposed advantageously in the central plane of the slabs, to resist vertical forces or loads on the plates, such additional joints or connections being substantially without effect on the main concrete reinforcement of the plates or slabs.
  • An important object of the present invention is the provision of a reinforced concrete road slab of the referred to type, being constructed to positively prevent or minimize the formation of irregular cracks or fissures under relatively heavy load or trafiic conditions.
  • a more specific object of the invention is the provision, in connection with a reinforced concrete road slab of the referred to type having a plurality of false gaps formed therein in spaced relation and transversely of the slab, of a reinforcing structure in the vicinity of the gaps designed to resiliently support or anchor the parts of the slabs on the opposite sides of the gaps, or to provide a cushioning effect against longitudinal tensile stresses on the plates under heavy loads or traffic.
  • Another object of the invention is the provision of additional reinforcing means adapted to withstand vertical loads on the plates, notwithstanding the resilient or cushioned mounting of the plates to withstand longitudinal stresses by the action of the false gaps and in the manner as will become more apparent as the description proceeds.
  • FIG. 1 is a fractional longitudinal section of a reinforced concrete road slab including a false gap and constructed in accordance with the principles of the invention
  • FIG. 2 is a view similar to tion of FIG. 1;
  • FIG. 3 is a fractional longitudinal section of a reinforced concrete road slab, being similar to the preceding figures and showing an improved feature of the invention
  • FIG. 4 is a plan view of the reinforcing steel mat of FIG. 3, embodying the improvements of the invention
  • FIG. 5 is similar to and showing a modification of FIG. 4;
  • FIG. 6 is an enlarged fractional view of FIG. 3;
  • FIG. 7 is a transverse section, taken along a false gap, of a reinforced concrete road slab or plate, showing yet another modification of the invention.
  • FIG. 8 is a plan view of the reinforcing mat of FIG. 7, including the improvements of the invention.
  • FIGS. 9 and l0 are transverse sectional and plan views similar to FIGS. 7 and 8, respectively, and showing still another modification of the invention.
  • FIG. 1l is similar to and shows a modification of the embodiment according to FIG. 2;
  • FIG. l2 is a perspective view of the reinforcing structure of FIG. ll.
  • the invention involves generally the provision, in a concrete road slab of the referred to type having a plurality of spaced transverse grooves or indentations in at least its upper surface adapted to create false gaps thereat by fracturing of the concrete upon the slab being initially subjected to a predetermined longitudinal stress or load, of a reinforcing steel mat structure embedded in and firmly adhering to the concrete of the slab, said structure comprising essentially a plurality of spaced longitudinal rods or bars extending in the lengthwise direction of the slab and a plurality of spaced transverse rods intersecting said longitudinal rods and connected thereto by welding or in any other suitable manner well known in the fabrication of reinforcing steel mats or the like structures for use in concrete constructions.
  • transverse rods are omitted, in accordance with the improvement of the present invention, within predetermined intermediate cushioning zones or anchoring regions extending to preferably equal distances from the opposite sides of the gaps to be formed, whereby to provide longitudinal rod sections within said zones, only traversing the respective gap.
  • the transverse rods are hunched or subdivided into groups with the rods of each group having a predetermined spacing distance and with the groups being spaced by intermediate regions free from transverse rods and having dimensions in the lengthwise direction of the slab substantially in excess of said rod spacing distance, to serve as equalizing or cushioning Zones for the gaps.
  • At least a fractional portion of the longitudinal rod sections Within said cushioning zones is coated with an adhesion-resistant substance, such as a bituminous material, :a synthetic (plastic) material or the like, to allow the rods to move freely relative to the surrounding concrete.
  • an adhesion-resistant substance such as a bituminous material, :a synthetic (plastic) material or the like.
  • the rod sections or parts thereof within the cushioning zones may be enveloped by sleeves or wrappings of adhesion-resistant material.
  • the cushioning zones or regions in the vicinity of the false gaps may either be integral parts or sections of a composite reinforcing steel mat or equivalent structure for the enti-re concrete slab or strip, or separate reinforcing structures for and in the vicinity of each gap and constructed in accordance with the principles of the invention may be provided.
  • additional reinforcing means may be provided in the cushioning zones, such as in the form of longitudinal rods, tubes or bars, 'being supported either by the longitudinal rod sections or by special supporting means provided therefor, care to be taken to prevent the additional reinforcing members from interfering with or impeding the free relative movement between the longitudinal rod sections and the surrounding concrete.
  • the foregoing aim may be achieved in a simple and eliicient manner by partially, that is, within the region on one side of the gaps only, coating the additional reinforcing members with Vadhesion-resistant material, to enable free relative movement of the concrete portions on the opposite sides of the gaps, or to provide an eicient resilient anchoring of the slabs, for the purpose and in a manner as will become further apparent from the following description in reference to the drawings.
  • FIG. 1 of the drawings there is shown a longitudinal section of a fractional portion of a slab forming part of a reinforced concrete l.road and including a false gap section constructed in accordance with the invention, it being understood that the entire slab or plate is provided with a series of spaced gaps or weakened sections defining predetermined fracture lines, and associated reinforcing structures, only one of which is shown and described in the following.
  • the slab section 1 is provided upon its upper surface 2 with a groove or indentation 3 extending transversely of and across the entire width of the slab, while a T-shaped insert 4 of synthetic or the like material is embedded in the undersurface of the slab in line with the groove 2, in an effort to further reduce the cross-section of the slab to be fractured for the forming of the false gap or fracture 5 upon the slab being initially subjected in traffic to an adequate longitudinal tensile stress or load.
  • the effect or function of the gap or fracture 5 is to prevent the formation of irregular cracks or fissures in the concrete surface by enabling a ready expansion and contraction within a cushioning or anchoring region a on the opposite sides of the gaps, under relatively heavy load variations and temperature fluctuations to which the slab is subjected.
  • a reinforcing steel mat or structure 6 comprised, in the example shown, of longitudinal bars or rods 7 traversing the gap 5 and cross-rods 8 being normal to and secured to the rods 7 by Welding or in any other suitable manner.
  • the regularly spaced cross-rods 8 are omitted within the predetermined cushioning zone or region a on the opposite sides of the gap 5 and the longitudinal rods 7, or the portions thereof within said region acting as dowels, are provided, either over the entire or a fractional length of the zone a, with an insulating coating 9 or the like adhesion-resistant covering adapted to prevent the formation of a close joint or adhesion between the coated rod portions and the surrounding concrete.
  • the coating 9 may advantageously consist of a bituminous or synthetic material. Alternatively, a covering sleeve may be provided in lieu of coatings 9, as described in the folowing.
  • the omission of the transverse or cross-rods 8 within the zone a has the effect of weakening the connecting joint between the mat 6 and the surrounding concrete, while the adhesion-resistant coating 9 of the rods acts to provide a kind of resilient anchoring for the longitudinal rods 7 by virtue of the now possible expansion and contraction of the coated rod sections. Besides, there is ensured thereby a safe fracturing of the concrete at the desired cross-section or gap 5 for the purpose as pointed out hereinbefore.
  • the mat 6 disposed in the center plane of the slab or plate 1 may be mounted in either the upper or lower third of the plate, to suit existing load or other operating conditions or requirements. Besides, a number of mats may be embedded in a single plate in spaced vertical relation and traversing the gap 5, in the manner shown. Furthermore, the mat 6 may be an integral part of a larger reinforcing mat or structure extending throughout the entire plate or slab 1, as indicated in FIG. 1, or individual unit mats or structures may be provided in the vicinity of each of the gaps 5, as shown in FIG. 2. Finally, the mat structures of FIGS. l and 2 may be combined and disposed in different vertical planes of a slab or plate 1, as will 4be understood. In order to support or properly position the mats within the slabs 1, suitable supporting or spacing devices may be provided in accordance with conventional practice. Alternatively, the concrete may be poured to a predetermined height or level and the mats positioned during the pouring or laying operation.
  • the sections of the longitudinal rods 7 located within the zones a on the opposite sides of the gaps 5 may serve to a certain extent to assume the transverse load or forces on the plates acting in the direction of said gaps.
  • sleeves or tubular dowels concentrically enveloping the rods 7 within the Zones a and connecting the separate slab portions A and B on the opposite sides of the gap 5, in the manner more clearly shown in FIG. 3 of the drawings.
  • the reinforcing sleeves or tubular elements 10 should not affect the expansibility of the plate or slab 1 for which purpose they are coated upon at least the outer surface thereof with a layer of insulating or adhesionresistant material, as indicated by stippling in FIG. 4, or otherwise treated or conditioned so as not to impede the relative movement of the rods 7. In many cases, it will be suicient to achieve this aim by coating the sleeves 10 over about one half of their length with adhesionresistant material, as shown in FIG. 5, wherein the length c of the sleeves 11 is less than the length of the zones a, as compared with FIGS. 3 and 4, wherein the length b of the sleeves 10 equals the length of the zones a.
  • the coatings upon the sleeves 11 should extend across the gaps 5 to a certain extent, as indicated in FIG. 5, to prevent corrosion in the region of the gap 5.
  • the sleeves are coated and arranged to be in intimate connection with one of the plate sections A and B, while being free to move within the other section, in such a manner as to enable said sections to move freely if subjected to dimensional changes of the plates, such as expansion, contraction, creeping, etc. caused by load, temperature or other influences.
  • a cap (not shown) or the like of metal, plastic, synthetic material, etc. may be mounted upon one end of the sleeves.
  • the caps are advantageously disposed alternately upon the opposite ends of the sleeves With enough free space ybeing left therebetween and the sleeves, to enable the latter and in turn the rod section 7 to move freely in relation to the surrounding concrete.
  • the surface of the sleeves 10 and 11 is preferably circular, but may be elliptical or of any other desired shape. It is not necessary to provide sleeves upon all of the rod sections 7 within the cushioning zones a, nor is it necessary for the sleeves to extend over the entire length of the zones, as in the case of the sleeves 10 of FIG. 4.
  • FIG. 5 shows a mat structure having auxiliary sleeves 11 of a length equal to a fraction c of but greater than one half of the Width of the cushioning Zone a.
  • the sleeves 10 and 11 may be arranged upon the rods 7 Cil in irregular fashion, but should be symmetrical to the gaps 5 wherever possible.
  • the ends of the sleeves may be closed yby means of seals 12 consisting of cork, putty, or a like sealing material, as shown in FIG. 6.
  • the constructions described in the foregoing make it possible to adapt the reinforcing structures to any existing design and operating conditions or requirements.
  • the sleeves or dowels 10 and 11, if of suliiciently large diameter may have a reduced wall thickness compared with sleeves of smaller diameter, while the inner diameter may be such as to snugly fit the rods 7, whereby to utilize the latter as additional means to resist transverse or vertical forces, depending upon the' loads or moment of resistance of the slabs in respect to the gaps 5.
  • a relatively ilexible or resilient anchoring of the slab sections on the opposite sides of the false gaps of a concrete road slab or plate of the type forming the subject of the invention by the coated sections of the rods 7 within the Zones a being enabled to expand under the effect of heavy loads, to thereby avoid the formation of irregular cracks or fissures in t-he slabs or plates, as well as to eliminate other defects inherent in the prior concrete road slab constructions.
  • coated rod sections 7 may serve to resist transverse forces or loads either separately or in conjunction with the additional reinforcing sleeves or dowels mounted upon the rods or carried by separate supporting means, substantially without impairing the resilient support or anchoring of the slabs, in the manner described and readily understood from the foregoing.
  • the provision of resilient anchoring zones adjoining the false gaps in the slabs or plates has the further advantage of preventing an unequal load distribution on the various gaps of a slab, whereby to in turn avoid concentrations of the total expansion upon a single gap or a limited number of gaps of a slab or plate.
  • FIGS. 7-10 are transverse sections through a slab or plate, taken along a false gap 5
  • FIGS. 8 and l0 are plan views of the respective reinforcing mat structures constructed in accordance with the invention.
  • the longitudinal rods 7 of the mats disposed in the central plane of the slabs traverse the gap 5 and the cross-rods 8 are omitted within the Zones a on both sides of the gaps, in substantially the same manner as in the preceding embodiments.
  • the rods 7 are covered by bituminous or the like coatings 9 within the zones a, in the manner and for the purpose specied.
  • FIGS. 7, 8 and 9, 10 Two different types of additional reinforcements for the assumption of transverse or vertical forces are shown in FIGS. 7, 8 and 9, 10, respectively.
  • sleeves or dowels 13 of reduced length d are provided supported by semi-circular bents or depressions 14 of a pair of auxiliary and transverse supporting rods 1S which are in turn supported, without being permanently aflixed thereto, by the longitudinal rods 7 engaging bents 16 in the rods 15 opposite to the bents 14, in the manner shown by the drawing.
  • the rods 15 may be positioned by loosely attaching them to the rods 7 by means of twisted wire elements 17, or in any other suitable manner, to allow of relative sliding movements upon the rods 7.
  • FIGS. 9 and 10 show different types of profiled dowels 18 and 19 mounted directly upon the rods 7 within the zones a. More particularly, the dowels 18 of substantially circular cross-section are formed with longitudinal grooves adapted to engage the coated sections lof the rods 7, while the members 19 are of angular cross-section to t or overlie the rods 7, in the manner shown and understood.
  • the dowels 13 may have a suicient length, whereby to overlie the first cross-rods 8 at the opposite ends of the zones a.
  • the respective rods 8 may be formed wit-h bents, eyelets or the like, to receive or support the ends of the -dowels 13, in a manner similar to the auxiliary supporting rods 15.
  • the auxiliary dowels or rods should be provided wth adhesion-resistant coatings over at least one half the length thereof, to provide a yielding support or anchoring of the slab portions on the opposite sides of the gaps 5, in accordance with the basic concept and principles of the invention.
  • the special reinforcing structures within the zones a of the false gaps S may be an integral part of a composite steel mat or the like reinforcing structure extending over the entire concrete road slab or strip, as indicated in FIG. 1, or separate or discrete mat structures may be provided in the vicinity of each of the gaps, as shown in FIG. 2.
  • the reinforcing structures, in place of being in the form of planar mats or assemblies may be of any, including a three-dimensional, type or construction with the cross-rods being omitted within the zones or regions a and with the longitudinal rods Within said zones designed to act as resilient cushioning or anchoring means for the slabs.
  • the ends of the longitudinal rods may be bent to form feet for the mounting or positioning of the mats or the like structures upon a base or road bed 21, as shown in FIGS. 11 and 12. If desirable, the cross-rods connecting the feet or bent portions 20 may be omitted.
  • the inserts 22 in FIGS. 11 and 12, corresponding to the sleeves 11 of FIG. 5, are shown itted with an edgewise plate or strip 23 disposed in line with the groove 3 and insert 4.
  • Strip 23 consisting advantageously of synthetic material, is traversed by the longitudinal rods 7 with the inserts or sleeves 22 overlying said rods and taking the place of the bituminous or the like coatings of FIGS. 1 and 2 described hereinbefore.
  • the effect of the strip 23 in further decreasing or weakening the cross-section of the slabs at the point where the gaps S are to be formed, is an added assurance of the formation of the gaps during the initial use under actual load or traic conditions.
  • a reinforced concrete roadway slab comprising in combination:
  • a reinforcing mat structure embedded in said slab being composed of (a) a plurality of spaced longitudinal rods extending in the lengthwise direction of slab, and
  • transverse rods being subdivided into groups with the rods of each group having a predetermined rod Spacing distance and with each two adjacent groups being spaced from one another by an intermediate region of the slab free from transverse rods and having a dimension in the lengthwise direction of the slab substantially in excess of said rod spacing distance,
  • said slab being provided, midway within said region, with a transverse groove in at least the upper surface of the slab dening a fracture line through said slab coincident with said groove, and
  • said last means consisting of an adhesion-resistant coating upon at least one of the portions of the longitudinal rod sections located on either side of said line.
  • said last means consisting of a bituminous coating upon at least one of the portions of the longitudinal rod sections located on either side of said line.
  • said last means consisting of tubular elements embedded in said slab and closely enveloping at least one of the portions of the longitudinal rod sections on either side of said line.
  • said last means consisting of tubular elements embedded in said slab symmetrically to said groove and closely enveloping said longitudinal rod sections, and a platelike element embedded in said slab and extending normally to said tubular elements in line with said groove.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
US477672A 1964-08-05 1965-08-03 Reinforced concrete road construction Expired - Lifetime US3437017A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEB0077971 1964-08-05
DEB0079426 1964-11-21
DEB0081498 1965-04-17
DEB0082181 1965-05-31

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US3577896A (en) * 1967-10-17 1971-05-11 Dyckerhoff & Widmann Ag Method for producing structure components of reinforced concrete subjected to tensile stress
US3590545A (en) * 1967-10-27 1971-07-06 Alcoa Of Great Britain Ltd Structural assemblies
US3702093A (en) * 1970-04-03 1972-11-07 Bekaert Cockerill Nv Sa Construction of concrete road with expansion joints
US3972640A (en) * 1974-09-16 1976-08-03 Miller Raphael W Highway joint with spring torsion bar
US4449844A (en) * 1981-05-11 1984-05-22 Larsen Torbjorn J Dowel for pavement joints
DE4328831A1 (de) * 1993-08-27 1994-04-21 Vonderlin Juergen Dipl Ing Fh Vorrichtung zur Abmilderung von vertikalen Bewegungen an Fugen im Industriebodenbau, mittels Querkraftübertragungsbügel
US5674028A (en) * 1995-07-28 1997-10-07 Norin; Kenton Neal Doweled construction joint and method of forming same
WO2000001890A1 (es) * 1998-07-07 2000-01-13 Vazquez Ruiz Del Arbol Jose Ra Procedimiento de imbricacion articulada entre losas de hormigon in situ
WO2000061869A1 (en) * 1999-04-14 2000-10-19 Shaw Ronald D Concrete dowel slip tube with clip
US6389774B1 (en) * 2001-02-13 2002-05-21 Gregory Howard Carpenter Pipe dowel for concrete slab construction
US6409423B1 (en) * 1994-04-29 2002-06-25 Ran Li Prestressed pavement system
US6517277B2 (en) * 1998-09-22 2003-02-11 Kansas State University Research Foundation Expansion and crack joint coupler
US20070134063A1 (en) * 2005-12-14 2007-06-14 Shaw And Sons, Inc. Dowel device with closed end speed cover
US20100154320A1 (en) * 2008-12-23 2010-06-24 Chevron U.S.A. Inc. Composite concrete roof for an outer lng containment tank and method of making the same
US20150121797A1 (en) * 2013-11-06 2015-05-07 Chad Brown Concrete anchor
US20160097169A1 (en) * 2014-10-01 2016-04-07 Power Brace LLC Composite hoop tie for concrete
US9340969B1 (en) 2014-11-13 2016-05-17 Shaw & Sons, Inc. Crush zone dowel tube
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
US20170081805A1 (en) * 2014-05-12 2017-03-23 Permaban Limited Arris Protection Joint
US9617694B2 (en) 2014-01-15 2017-04-11 Shaw & Sons, Inc. Concrete dowel system
US20180320373A1 (en) * 2017-05-03 2018-11-08 Illinois Tool Works Inc. Concrete slab load transfer and connection apparatus and method of employing same
US20190249375A1 (en) * 2018-02-09 2019-08-15 Mctech Group, Inc. Field-assembly concrete dowel basket
US20190257040A1 (en) * 2012-02-27 2019-08-22 Hengelhoef Concrete Joints Nv Structural joint
US10858825B2 (en) 2015-10-05 2020-12-08 Shaw & Sons, Inc. Concrete dowel placement system and method of making the same
US11203840B2 (en) 2019-06-25 2021-12-21 Illinois Tool Works Inc. Method and apparatus for two-lift concrete flatwork placement
US11578491B2 (en) 2020-02-07 2023-02-14 Shaw Craftsmen Concrete, Llc Topping slab installation methodology
US11623380B2 (en) 2015-10-05 2023-04-11 Shaw & Sons, Inc. Concrete dowel placement system and method of making the same
CN116005528A (zh) * 2022-12-29 2023-04-25 徐宇翔 一种道路工程裂缝加固结构

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US2015340A (en) * 1926-11-29 1935-09-24 Carey Philip Mfg Co Reenforced concrete road construction
US1996153A (en) * 1929-12-19 1935-04-02 John N Heltzel Road building apparatus
US2106095A (en) * 1935-04-10 1938-01-18 Heltzel Joseph William Expansion joint
US2080124A (en) * 1935-05-17 1937-05-11 Laclede Steel Company Reenforced concrete structure
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US2116697A (en) * 1936-12-10 1938-05-10 Henry A Taubensee Joint for concrete slabs
US2309538A (en) * 1941-07-19 1943-01-26 Robert R Robertson Dowel bar contraction joint
US2806414A (en) * 1953-11-09 1957-09-17 Edwin R Woodman Forming strip for pavement construction
US3022713A (en) * 1954-11-26 1962-02-27 Bengt F Friberg Prestressed concrete structures
US3045566A (en) * 1959-11-24 1962-07-24 Roy L Houck Machine for grooving road paving to receive expansion strips

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3577896A (en) * 1967-10-17 1971-05-11 Dyckerhoff & Widmann Ag Method for producing structure components of reinforced concrete subjected to tensile stress
US3590545A (en) * 1967-10-27 1971-07-06 Alcoa Of Great Britain Ltd Structural assemblies
US3702093A (en) * 1970-04-03 1972-11-07 Bekaert Cockerill Nv Sa Construction of concrete road with expansion joints
US3972640A (en) * 1974-09-16 1976-08-03 Miller Raphael W Highway joint with spring torsion bar
US4449844A (en) * 1981-05-11 1984-05-22 Larsen Torbjorn J Dowel for pavement joints
DE4328831A1 (de) * 1993-08-27 1994-04-21 Vonderlin Juergen Dipl Ing Fh Vorrichtung zur Abmilderung von vertikalen Bewegungen an Fugen im Industriebodenbau, mittels Querkraftübertragungsbügel
US6409423B1 (en) * 1994-04-29 2002-06-25 Ran Li Prestressed pavement system
US5674028A (en) * 1995-07-28 1997-10-07 Norin; Kenton Neal Doweled construction joint and method of forming same
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GB1093356A (en) 1967-11-29
NL6510144A (forum.php) 1966-02-07
CH459282A (de) 1968-07-15
AT281897B (de) 1970-06-10
NO119746B (forum.php) 1970-06-29

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