FR2724953A1 - IMPROVED ROAD JOINT FOR ART WORK - Google Patents

Abstract

Improved road seal for concrete structures, consisting of a central section (9) of flexible material and two edge sections (7, 8) arranged at the level of the roadway in recesses (29, 30) made on each side a slot (2) between concrete deck elements (3, 4), in which the edge profiles (7, 8) are provided with a set of horizontal sealing rods (17, 18) threaded on plates (14) integral with the edge profiles (7, 8) and vertical anchor rods (19) fixed to the horizontal sealing rods (17, 18), and glued in holes (31, 32) of the apron (3, 4), forming an anchoring device (12, 13) embedded in an adherent resin mortar beam (25, 26). Application to the field of construction.

Description

The invention relates to an improved road joint for a work of art

  ebeton, consisting of two edge profiles and one profile

central in flexible material.

  These road joints are arranged transversely in the roadway, at the level of a slot between the ends of two neighboring elements of the deck of a structure. Their attachment must be extremely resistant: in fact, the joints are subjected to significant forces exerted by the movements of the structure itself, as well as to tearing phenomena due to the stresses generated by the flow of vehicles,

  especially the passage of heavy goods vehicles.

  In addition, the installation of the joint must be able to be carried out very quickly, the road joints being intended to be installed as well on new works as in replacement or

repair of a used seal.

  Road joints currently existing have several drawbacks. For an installation on a new structure, existing joints require reservations to be made on the structure beforehand

  at the road surface.

  For a repair, the significant hardening time of the

  mortars currently used constitute a handicap.

  Another drawback is linked to the fact that the existing joints are provided only for the central part of the roadway. There are serious problems with the edges and / or the sidewalks. Currently, we put in place a joint on the width of the roadway and a second joint on the sidewalk, the two joints being distinct and overlapping at the level of the pavement / sidewalk rupture. However, leaks often occur at the level

of this discontinuity.

  In addition, the flexible central element of the joint is currently available only in standard lengths less than the current widths of engineering structures, resulting in

  additional discontinuities which affect sealing.

  The object of the invention is to provide an improved road joint

  that it eliminates these drawbacks and has improved fixation.

  This object is achieved by the road joint according to the invention, consisting of two edge profiles and a central profile of flexible material, each edge profile having a longitudinal groove on the opposite face of the other edge profile, and the central profile having longitudinally on each side a lateral bead which is inserted in the groove of the edge profile, the edge profiles being arranged at the level of the roadway in recesses formed in a covering layer on each side of a slot between concrete deck elements, characterized in that the edge profiles are provided with an anchoring device constituted by a set of horizontal sealing rods threaded on plates integral with the edge profiles and fixed vertical anchor rods on the horizontal sealing rods, these anchoring rods being inserted and glued into holes in the deck elements, the anchoring device age being

  embedded in an adherent beam in resin mortar.

  For example, the anchor rods can be mounted by their upper threaded end on the horizontal sealing rods by means of plates, enclosing the rods.

  horizontal sealing and held by a nut.

  Preferably, the anchor rods are made of composite material.

  Advantageously, the resin mortar is made up of five parts of aggregates and one part of a resin consisting of: - a basic copolymer of epoxy type for approximately 55 to 65% by mass; ú5 - organic charges for approximately 30 to 35% by mass; - differential surface tension modifiers for approximately 2 to D o by mass, - adhesion promoters for approximately 1 to 2% by mass;

  - mineral charges for approximately 3 to 4% by mass.

  In particular, the basic copolymer can comprise the following monomer systems - a monofunctional epoxy system for approximately 25 to 30% by mass - a bifunctional epoxy system for approximately 5% by mass;

  - a poiyurée type system for approximately 25 to 30% by mass.

  In an advantageous embodiment, the central profile is hollowed out in one or more rows of longitudinal chambers and has a V-shaped upper surface with the pointed tip

down a slight slope.

  According to a variant of the invention, the edge profiles are

  continuous and present a statement at the sidewalks.

  Advantageously, the cross section of the edge profiles then remains constant from one end to the other of the road joint, including

including sidewalk readings.

  The central profile can be continuous from one end to the other of the

  road joint, including sidewalk readings.

  According to another variant of the invention, the road joint has one end shaped as a sidewalk joint consisting of hollow edge profiles of rectangular section having a longitudinal slot on their opposite faces and a sealing tab on the opposite faces, these profiles edge being welded by means of readings on the edge profiles of the

road joint.

  The invention will be better understood on reading the description

  following of a particular embodiment, carried out by way of example only with reference to the accompanying drawings, among which: - Figure 1 is a general perspective view, partially broken away, of a road joint according to the invention; - Figure 2 is a cross-sectional view, along line 11-il of Figure 1, of the road joint, showing the attachment to the deck of a work of art; - Figure 3 is a general perspective view of the road joint with a sidewalk statement; - Figure 4 is a detailed perspective view of the road joint at the sidewalk statement, in an alternative embodiment having a sidewalk joint; - Figure 5 is a cross-sectional view of an edge profile to the sidewalk joint of Figure 4; Figure 6 is a cross-sectional view of a profile

  flexible center of the sidewalk joint in Figure 4.

  Figure I shows an improved road joint 1 according to the invention, which is intended to ensure the continuity of the roadway at a transverse slot 2 as there are for example at the connection of two deck elements 3 and 4 d 'a

work of art.

  In the example shown, the two ends of the concrete deck elements are covered with a coating layer 5 and 6 consisting of a bituminous mix. The road joint 1 mainly comprises two edge profiles 7 and 8 and a central profile 9 made of flexible material. The edge profiles 7, 8 are each intended to be secured to the deck 3, 4 on one side of the slot 2. The flexible central profile 9 occupies the central space between the profiles 7 and 8, this space being of variable width depending in particular on the phenomena of expansion of

aprons 3, 4.

  Each edge profile 7, 8 is a straight profile of rectangular cross section. I1 has on the opposite face of the other profile a longitudinal groove 10. These grooves are intended to maintain the central profile 9 in position. To this end, the central section 9 has on each of its longitudinal edges a bead 1 1 whose section has a shape

  complementary to that of the gorges 10.

  Preferably, the side walls of this groove 10 widen from its opening towards its bottom, for example in a dovetail shape as shown. Thus, the flexible central section 9 is perfectly maintained between the edge sections 7, 8, the beads 1 1 being introduced by force from each

  side inside the groove 10 of the edge profiles 7, 8.

  The edge profiles 7, 8 are preferably made in a

  metallic material, for example steel.

  The central profile 9 is made of a flexible material, by

example in elastomer.

  Typically, each edge profile 7, 8 of the road joint I has an anchoring device on the deck,

respectively 12, 13.

  On each profile 7, 8 are fixed projecting at regular intervals transverse connection plates such as 14 provided with two holes 15 and 16, at least one of which is oblong horizontally. The holes 15, 16 of the successive plates 14 are aligned along two horizontal straight lines parallel to the profile 7, 8. The plates 14 are for example welded to the

profile 7, 8 metallic.

  Horizontal rods called sealing rods 17 and 18 are threaded through the rows of holes 15 and 16 of the plates 14. Thus, at least one 18 of the rods, threaded in the row of oblong holes 15, is movable transversely, allowing a position adjustment. The other rod 17 will for example be welded to the

connection plates 14.

  The anchoring device 12, 13 also comprises vertical anchoring rods such as 19, which are intended to be inserted and glued into holes drilled in the concrete of the deck 3, 4. These vertical anchoring rods 19 are fixed at their upper part on the sealing rods 17 and 18. For example, the anchoring rods 19 have a threaded upper end, on which two plates 20, 21 pierced with a hole 22, 23 are held by a nut 24. For fixing the anchor rod 19, these plates 20, 21 are arranged so as to grip the sealing rods 17 and 18. Preferably,% es holes 22, 23 of the plates 20, 21 are oblong in the direction 0 transverse, so as to allow transverse adjustment of the position of the anchor rods 19. Of course, the longitudinal position of the anchor rods 19 along the rods

  sealing 17, 18 is also adjustable.

  The length of the anchor rods 19 is chosen as a function of the thickness of the covering layer 5, 6 of the road,

  so as to penetrate into the deck 3, 4 over a sufficient length.

  The anchoring device 12, 13 cooperates with a resin mortar beam 25, 26 which is poured on each side on the apron between the road surface and the edge of the slot 2 marked by the 3.3 edge profile 7 , 8, so as to drown the anchoring device 12, 13. This adherent resin beam makes it possible to associate on the one hand the anchoring device, and on the other hand the resin, which achieves a

fixing by gluing.

  The sealing rods i7, 18 and anchor 19 can be made of metal, for example conventional concrete irons. But advantageously, the anchor rods 19 are made of composite material. Thus, any risk of corrosion which could cause the anchor rods to break is eliminated. In addition, the use of

  composite material improves the flexibility of the anchoring device.

  The flexible central section 9 has a specific shape. It is hollowed out from two vertical rows of longitudinal chambers such as 27. It has a V-shaped upper surface 28 with the point directed downwards according to a slope which is preferably not very pronounced. Thus, the flexible central section 9, not only has sufficient rigidity, ensuring its maintenance in position over time, but also is self-cleaning, the gravel and other impurities collected on its upper surface being ejected at the

  gradually by the tires when passing vehicles.

  The fixing of the road joint 1 at the level of the slot 2 between the decks 3 and 4 of a structure is carried out by the cooperation 1 5 of the anchoring device 1 2, 1 3 with the beams 25, 26 made up of '' a resin mortar with specific characteristics. This cooperation is particularly apparent on

the sectional view of FIG. 2.

  Recesses 29, 30 are provided on both sides of the slot 2 by removing the pavement covering 5, 6 Until the end of the deck 3, 4 is cleared. Of course, for a new structure, reservations could be made , but these are not necessary. Indeed, the recesses are advantageously made by cutting the coating, thereby saving time. The slightest precision in the dimensions of the recess 29, 30 is not a drawback, since the anchoring device of the road joint according to

  the invention is adaptable to variable dimensions of the recess.

  The edge profiles 7, 8 are placed in the recesses 29, 30.

  Anchoring holes such as 31, 32 are drilled in the decks 3, 4. The edge profiles 7, 8 and their anchoring devices 12, 13 are then positioned so that the vertical anchoring rods 19 are driven into the holes 31, 32 and secured to the aprons 3, 4 by means of a resin with strong adhesion. The resin mortar beams 25, 26 are poured around the anchoring devices 12, 13 between the pavement layer and the edge of the slot 2 marked by an edge profile 7, 8, so as to drown the devices

anchor 1 2, 13.

  Preferably, a drain 33 is previously disposed on the upstream side

  of road joint 1 in the recess in the roadway

  above the apron 3, 4 This drain 33 can be a simple retangular profile in aluminum alloy, provided with slots. The drain 33 allows the flow and evacuation of the water, the

  resin mortar being completely waterproof.

  It is understood that the cooperation of the elements of the anchoring device 12, 13 and of the resin mortar beam 25, 26 is essential to the quality and the duration of the fixing of the road joint 1. To this end, the resin mortar has a character composition. This resin mortar combines a resin or binder with aggregates according to the following volume proportions: 5 parts

  of aggregates for 1 part of resin.

  The aggregates are based on diorite and silica.

  The resin is a basic copolymer, supplemented by non-migrating organic fillers, surface tension modifiers and adhesion promoters allowing good compatibility between the resin and the aggregates, as well as by adding mineral fillers to refine the drop. porosity

  and facilitate the flow during the implementation.

  The basic copolymer is obtained by the simultaneous reaction after mixing three systems of monomers: - a first system of biphenol epoxy type diluted with a monofunctional diluent reacting with an adductive aliphatic polyamine (derived from dipropylene triamine). This system brings tenacity to the binder. It is present in a

  mass proportion of approximately 25%.

  - a second system of bifunctional epoxy type derived from hexandiol reacting with an adductive aliphatic amine (derived from dipropylene triamine) and a cycloaliphatic amine. This system improves the resistance to effluents such as brine, water, aliphatic hydrocarbons, etc. It is present in a

mass proportion of approximately 5%.

  - A third polyurea type system consisting of the reaction of a polyisocyanate and a mixture of cycloalophatic amines (isophorore diamine and trimethyl hexamethylene diamine) catalyzed by a caprolactam derivative. This system provides constant elasticity by blocking migration, which can lead to a reduction in flexibility. It is present in a proportion in

mass of 25 to 30% approximately.

  Organic fillers are made up of resins

  condensates from coal without any volatile fraction.

  Their mixture is adjusted so as to obtain a viscosity which allows them, by diluting the base copolymer, to facilitate its use. They are present in a proportion by mass

between about 30 and 35%.

  The differential surface tension modifiers (binder / aggregates, mortar or concrete / substrates, etc.) are mainly organic salts of carboxylic acids, mono-esters of fatty acids, methylphenylsiloxane. They are

  present in a proportion by mass of 2 to 3% approximately.

  The adhesion promoters are aminosilanes and epoxysilanes which ensure good adhesion of the binder to the aggregates containing silica. They are present in a

  mass proportion of approximately 1 to 2%.

  Mineral fillers with a diameter of less than 5 microns are treated on the surface so as to be organophilic and facilitate the flow of aggregates which will be added to the binder to produce mortars or concretes with a final compactness increased by 20%. I 1 are present in a proportion by mass of 3 to 4% approximately. This resin has a high resistance to abrasion and cracking even at low temperatures, a great elongation at break, a resistance to thermal shocks, a constant flexibility over time, and good workability. She

  allows mortars with low modulus of elasticity to be produced.

  The binder cooperates optimally with the elements of the anchoring device 12, 13 of the edge profiles 7, 8. In particular, there is an improvement in flexibility when the anchoring rods 19 are made of composite material. In addition, the anchor rods in composite material remove all

risk of corrosion.

  According to a variant of the invention, the road joint 1 can be extended over the entire width of a civil engineering structure or a traffic lane, including a roadway bordered by sidewalks such as 34.

  This variant is shown in FIG. 3.

  According to this variant, the edge profiles 7, 8 have a raised 35, 36, vertical, or oblique as shown, corresponding to the height of the sidewalk 34. These raised 35, 36 ensure the continuity of the edge profiles 7, 8. Thus , the central profile 9 can be inserted continuously along the length

  total track, including survey and sidewalks.

  At the sidewalk, the road joint 1 is subject to less stress. The sealing can be carried out more simply by means of a mortar beam without high shrinkage

  resistors, for example a ready-to-use hydraulic mortar.

  In another alternative embodiment shown in FIGS. 4 to 6, the road joint I has one end forming a specific sidewalk joint 37. This sidewalk joint 37 is constituted by two edge profiles 38 and 39 of rectangular section, having on their faces opposite one another a longitudinal slot 40 and on the opposite faces a longitudinal sealing tongue 41. A profile wide central 42 has on each of its edges a longitudinal strip with a T-shaped section 43, which are introduced into the slots 40,

  41 of the edge profiles 38 and 39 of the sidewalk joint 37.

  The edge profiles 38, 39 have a raised 47, 48 corresponding to the height of the sidewalk. The edge profiles 38, 39 are welded in the extension of the edge profiles 7, 8 of the roadway. In this case, the central profile is discontinuous: the central profile 9 is limited to the roadway and the specific central profile

42 on the sidewalk and on the relief.

  Of course, these variants which have been described for a sidewalk could be implemented for example in the case of a carriageway with several lanes arranged offset on several levels.

Claims (10)

  1 Improved road joint for concrete structures, consisting of two edge profiles (7, 8) and a central profile (9) made of flexible material, each edge profile (7, 8) having on the face opposite the other edge profile a longitudinal groove (10), and the central profile (9) having longitudinally on each side a lateral bead (1 1) which is inserted in the groove (10) of the edge profile (7, 8) , the edge profiles (7, 8) being O arranged at the level of the roadway in recesses (29, 30) formed in a covering layer (5, 6) on each side of a slot (2) between elements (3, 4) of concrete deck, characterized in that the edge profiles (7, 8) are provided with an anchoring device (12, 13) constituted by a set of horizontal sealing rods (17, 18) threaded onto plates (14) integral with the edge profiles (7, 8) and vertical anchor rods (19) fixed on the sealing rods t horizontal (17, 18), these anchor rods (19) being inserted and glued into holes (31, 32) of the deck members (3, 4), the anchor device (12, 13) being embedded in an adherent beam resin mortar (25, 26).   2. Improved road joint according to claim 1, characterized in that the anchoring rods (19) are mounted by their upper end threaded on the horizontal sealing rods (17, 18) by means of plates (20, 21), enclosing the horizontal sealing rods (17, 18) and held by a nut (24).   0 3. Improved road joint according to any one of   claims 1 or 2, characterized in that the anchor rods (19) are made of composite material.   4. Improved road joint according to one of claims 1 to 3,   characterized by the fact that the resin mortar consists of five parts of aggregates and one part of a resin consisting of: - a basic copolymer of epoxy type for approximately 55 to 65% by mass - organic fillers for About 30 to 35% by mass; - differential surface tension modifiers for approximately 2 to 3% by mass; - adhesion promoters for approximately 1 to 2% by mass;   - mineral charges for approximately 3 to 4% by mass.   5. Improved road joint according to claim 4, characterized in that the basic copolymer comprises the following monomer systems: - a monofunctional epoxy system for approximately 25 to 30% by mass - a bifunctional epoxy system for approximately 5% by mass ;   - a polyurea type system for approximately 25 to 30% by mass.   6 Improved road joint according to any one of the   Claims 1 to 5, characterized in that the central profile   (9) is hollowed out from one or more rows of longitudinal chambers such as (27) and has an upper surface (28) in the shape of a V with the point directed downwards along a falble slope.   7. Improved road joint according to one of claims 1 to 6,   characterized by the fact that the edge profiles (7, 8) are   continuous and have a reading (35, 36) at the sidewalks.   8. Improved road joint according to claim 7, characterized in that the cross section of the edge profiles (7, 8) remains constant from one end to the other of the road joint (1), including   including sidewalk readings (35, 36).   9. Improved road joint according to one of claims 7 or   8, characterized in that the central profile (9) is continuous from one end to the other of the road joint (1), including the sidewalk readings (35, 36).   10. Improved road joint according to any one of   claims 1 to 5, characterized in that it has a   end shaped as a sidewalk joint (37) consisting of hollow edge profiles (38, 39) of rectangular section having a longitudinal slot (41) on their opposite faces and a sealing tongue (42) on the opposite faces, these profiles edge (38, 39) being welded by means of lifts (47, 48) on the edge profiles (7, 8) of the road joint (1)