Abstract: Edge protectors are useful to be cast into the edges of concrete slabs to prevent spalling thereof after shrinkage has occurred and a gap has formed between adjacent slabs. An alternative edge protector (10) is described which comprises a first folded sheet having, in use, an upper (35) and a lower portion (25), the fold being on a first side of the first folded sheet and being alignable, in use, with the sidewall of the slab, the upper portion being planar and being arrangeable, in use, with its upper surface coplanar with the upper surface of the slab, the lower portion extending at least partially under the upper portion in a direction away from the fold, and continuing from the end of the lower portion in the same general direction, without any further folds or bends greater than 90 degrees, as an anchor portion (20) such that the anchor portion is arrangeable within the slab.

Abstract: A plural-component, composite-material highway dowel bar and an associated fabrication methodology. The dowel bar includes an elongate, solid-cylindrical, high-shear-strength core bar, preferably steel, and an elongate, fiber-reinforced plastic-resin jacket, including an elongate, pultrusion-formed, tubular sleeve, and sleeve-received, opposite-end, end-well sleeve end plugs, fully surrounding and protectively covering the core bar.

Abstract: A bearing is provided for use in connection with expansion joint systems. The bearing may be incorporated into expansion joint systems that are used in roadway constructions, bridge constructions, and architectural structures. The bearing can absorb increased loads that are applied to the expansion joint system. The structure of the bearing also permits improved motion of, and provides improved support for, the components of the expansion joint system that are supported on or engaged with the bearing.

Abstract: A road surface overlay system including a road surface, an adhesive material that is applied to a portion or all of the road surface, a woven member including fiber bundles, wherein each of the fiber bundles are substantially embedded in the adhesive material and a layer of aggregate applied onto the woven member and the adhesive material. A method of forming a road surface overlay system is also provided.

Abstract: An expansion joint and the corresponding method of setting an expansion joint between adjacent slabs of poured concrete. To form the expansion joint a filler strip is provided. To protect the filler strip, a protective cap element is provided. The protective cap element has a top surface and opposing side surfaces. The structure of the protective cap element creates a long central groove. Pin corrals extend from the side surfaces of the protective cap element. The protective cap element is placed over the filler strip so that the filler strip is disposed within the groove. The protective cap element and the filler strip are anchored by driving anchor pins through at least some of the pin corrals. Concrete is then poured against the filler strip and the protective cap element, wherein the concrete envelops the pin corrals that are not engaging anchor pins.

Abstract: Polymer powders redispersible in water in paving joint mortars, the paving jointing mortar having approximately 0.5% by weight or more, based on the paving joint dry mortar, of one or more mineral binders, as well as one or more additives and, if necessary, further components. The paving joint mortar can be introduced into a joint in powder form and subsequently watered, or the paving joint mortar can be mixed with water before introduction into the joint and added to the joint in paste form.

Abstract: A backer rod adapted for insertion into a construction joint having a polymeric foam body of closed-cell construction and a foraminous skin with both open and closed cells. The backer rod, when compressively inserted into a construction joint, is impervious to hot and cold sealants alike and maintains the seal integrity during the extremes of expansion and contraction. The backer rod is usable over the temperature range of ?70 to 450 degrees Fahrenheit. The backer rod hereof is a continuously extruded closed-cell foam body that is degassed by a secondary extrusion. The skin portion is formed by heat treating the exterior of the polymeric foam body so as to create microperforations therein.

Abstract: A shear-load chuck which is mounted between two members and has a multi-layer structure for transmitting dynamic loads. The multi-layer shear-load chuck is mounted on one surface of a junction like in the traditional bushing of a shear load chuck. A support basket is arranged correspondingly on both sides of the junction and has an end plate as well as at least one strap-like loop. The end plate forms together with the at least one strap-like loop a closed load system. The support basket is attached to the shear-load chuck on one surface of the junction, while it is attached to the bushing on the other surface of the junction. It is further possible to change the cross-sectional shape of the multi-layer shear-load chuck as well as the structural shape of the strap-like loop.

Abstract: A method to produce an expansion joint for adjacent roadway slabs having an expansion gap therebetween. A recess is cut or formed into the surface of each adjacent roadway slab to create a pair of recesses parallel to and adjacent the expansion gap. The recesses are cleaned to a sound, dust-free and rust-free surface. A temporary form is inserted in the expansion gap between the adjacent roadway slabs. A mortar mixture of a slightly resilient polymer and aggregate is installed in each recess to form a pair of parallel nosings adjacent the expansion gap. High-strength filler blocks are encapsulated within the mortar mixture to reduce the volume of the mortar mixture and to thereby reduce the cost of the nosings. A temporary backing is inserted in the expansion gap between the nosings. An initially liquid sealant is installed between the nosings and on top of the temporary backing which will cure to form a flexible seal.

Abstract: The present invention relates to paving and systems in respect of laying pavers, and devices to aid methods of laying pavers. The apparatus of this invention is referred to as a compensating member because it compensates for spaces between adjacent pavers as well as it compensates for any expansion of the pavers once they are in situ. The compensating member (2) is fabricated so that a portion of said compensating member is compressible and most preferably is made from at least one limb which has at least one compressible formation formed thereon or as a part thereof.

Abstract: A control joint for forming and controlling concrete structures such as floors and tilt-up walls. The joint has a base and an upstanding web and is preferably extruded from plastic having a honeycomb cell structure. The honeycomb structure may include a metal reinforcing section extending within the structure along the length of the joint. The joint may be utilized to form various concrete structures such as sidewalks, pads and tilt-up walls.

Abstract: A field limitation joint has a core (101) of closed cell synthetic elastomer and aluminum L-section side members (102). The core is adhered to the side members by double sided adhesive strip (103) of the type having reinforcing filaments (104) running along the length of the strip. The core is pre-compressed and held in compression by tapes (105, 106). These are fabric reinforced and incorporate a central strip (107) of polymer film rendering them non-adhesive along their center. Also they have perforations (108, 109) along their length at the edge of the strip (107). The adhesive edges (110) of the tape (105) are adhered to the outside of upright limbs (111) of the side members and pass over the top of the side members. The perforations (108) run along the top edge of the side members. The other tape (106) extends between the other limbs (112) of the side members on their undersides, again with the non-adhesive strip preventing adhesion to the core (101).

Abstract: A sealing device (1) for a settlement joint (2) between two building members (3 and 4) consists of two anchoring units (5) connecting with the building members (3,4), placed on opposite sides of the settlement joint (2), as well as an elastic bridge unit (6). The bridge unit (6) is connected at its longitudinal edges with the anchoring units (5) in such manner that a longitudinal leg (7) of an anchoring unit (5), protruding approximately perpendicularly from the building members (3 or 4), penetrates into an open longitudinal groove (8) in the bridge unit (6), corresponding to the respective building member (3 or 4).

Abstract: A seal for covering a track in a floor is disclosed which is flexible in the upward direction to permit an arm or the like moving on the track to pass through the seal and is considerably less flexible in the downward direction into the channel and capable of supporting a person or equipment traversing the channel. The difference in flexibility in the two directions is obtained by providing a relatively thin material in the area of the hinge section and a relatively thicker material in the cover portion extending over the channel. The relatively thicker material section may be formed by affixing a narrow strip of flexible material to a wider strip of the material. The narrow strip may be affixed to the wider strip by welding or fusing.

Abstract: The present invention is directed to an improved bridge joint and method for constructing a bridge joint in a channel or trench over an expansion gap in a bridge. The invention utilizes a polysulfide elastomer binder, which may be provided at room temperature and poured over aggregate chips in the channel, even in adverse weather conditions. The resulting mixture of polysulfide elastomer binder and aggregate withstands vehicular impact stress and provides adhesion and improved elasticity.

Abstract: A method of making a flexible, yet durable expansion joint that is at a general even grade with abutting roadway surfaces. The method includes cutting a recess into adjacent roadway slabs having a gap therebetween, and thereafter cleaning the recesses. A flexible membrane strip is placed across the gap from slab to slab and secured thereto. Then, the recesses and gap are substantially filled with a mixture of sealant and aggregate. A final layer of aggregate is applied on top of the mixture such that the final layer of aggregate is at about an even grade with the abutting roadway slabs.

Abstract: A method of forming a joint (2) and the member (8, 28) used therein between two cementitious faces (3, 4) in which the space between the faces is not of uniform cross-section, but has at least two different widths (5, 6) and is stepped with a shoulder (7). The joint member has a central upright portion (9), a lower portion or head (10) for positioning the member relative to the lower faces (5). The lower portion includes one or more sets of projections (14) which are resiliently deformable. Flanges 11 on either side of the central portion have limited movement relative to the central portion rest on the shoulder (7) of the faces when the space between the member and the faces 3, 4 is filled with a resilient but compressible product.

Abstract: A seismic expansion joint cover for concealing an expansion gap between building members comprises retainers attached to building members on each side of the expansion gap and a cover spanning the expansion gap and overlying at least portions of the first and second retainers and a portion of the building member on at least one side of the gap. The cover is attached to the retainers by releasable fasteners, such as hook and loop fasteners, that enable it to detach completely from the retainers in an earthquake and to be subsequently reattached. One element of each of the fasteners on one side of the gap is attached to a slider that slides along a track affixed to the internal side of the cover to enable normal thermal expansions and contractions of the gap. Tethers keep the cover from falling to the floor and becoming an obstacle to persons moving through the building.

Abstract: A method of manufacturing a retaining element for an expansion joint seal comprises co-extruding, in a desired profile, a thermoplastic rubber body with high density thermoplastic elastomer reinforcing plate on the lower surface thereof. The reinforcing plate includes at least one rib extending into the thermoplastic rubber body. After the co-extruded body and reinforcing plate are permitted to cool and harden the lower surface of said co-extruded body and reinforcing plate is mechanically planed to obtain a retaining element of said desired profile with a flat lower surface.

Abstract: Priming composition containing a homogeneous liquid solution containing a polymeric material and at least one water-miscible solvent in an amount sufficient to provide adhesion between wet or dry road surface materials and adhesive coated articles. The priming composition allows the marking of roadways with pressure sensitive adhesive articles even on wet or damp roadway surfaces. Also a method for priming roadway surfaces.

Abstract: Disclosed is an extruded, low density, non-outgassing ethylenic polymer foam containing 30-85% open cells and the remainder closed cells and having an essentially integral surface. The foam possesses superior compression recovery and lower compression resistance when compared with similarly comprised ethylenic closed cell foams and superior moisture resistance and handling characteristics when compared to open cell foams.

Abstract: A paving composition comprises a cement binder, a dispersible latex polymer binder, and a mineral aggregate filler such as sand. The filler may be made up of mineral fines such as fly ash, mineral aggregate such as sand, and/or an elastomeric filler such as ground rubber particles. The composition may further include a defoamer, a plasticizer and a dispersible pigment, the latter preferably being a black pigment to color the composition to that of asphalt pavement.

Abstract: An expansion joint retainer is used in fastening a flexible elastomeric seal or strip seal to a structural slab. The retainer has a main body made from a first material. The main body has a thickness selected to permit emplacement of the retainer on the edge of a said slab whereby the upper surface of the main body is substantially coplanar with or beneath the upper traffic bearing surface of the slab. The retainer includes a retaining element adjacent the lower surface of the main body. The retaining element is made of a second material serving to provide the retainer with sufficient rigidity to be bolted to a slab. The invention is characterized in that the second material is a thermoplastic elastomer.

Abstract: An expansion joint sytem (10) spans a slot (12) of adjacent concrete slabs (14, 16). The system includes a boxed out area (22) adjacent the slot. A plate member (32) extends across the slot. A preformed resilient pad (42) is positioned above the plate member. Nosings (64) of resilient material are bonded to the pad and to the surfaces bounding the boxed out area. The pad has a cross sectional configuration that achieves enhanced bonding to the nosings, greater flexibility and resistance to failure in cold weather, and greater elongation without failure.

Abstract: A method to produce an expansion joint for adjacent roadway slabs having a gap therebetween. A recess is cut or formed into the surface of each adjacent roadway slab to form a pair of recesses parallel to and adjacent to the gap. The recesses are cleaned to a sound, dust-free and rust-free surface. Each recess is coated with a slightly resilient polymer primer to inhibit rusting and corrosion and to form a bonding surface. A mortar mixture of a slightly resilient polymer and aggregate is installed in each recess to form a pair of parallel nosings adjacent to the gap, the nosings being bonded to the roadway slabs. Opposed surfaces of the nosings are primed with a silicone primer. A temporary backing is inserted in the gap between the nosings. An initially liquid silicone sealant is installed between the nosings and on top of the temporary backing which will cure to form a flexible seal.

Abstract: An expansion joint (14) includes a preformed resilient center section (16), which is preferably formed of epoxy modified urethane, having reinforcing members (18) bonded along opposite edges thereof in order to provide a better bond width the adhesive bedding compound (19) and onto the respective structural members (10, 12) while minimizing overall joint with an suspectability to damage and/or cohesive failure. The preformed resilient center section (16) and the recesses of the structural members (10, 12) in which it is received are preferably offset from the gap (24) in an asymmetrical configuration.

Abstract: A pre-packaged bituminous sandstone material, which can be applied to damaged pavement areas at ambient temperatures, is prepared by comminuting bituminous sandstone in the presence of water to form an intimate mixture of bituminous sandstone having particles which pass through a one-quarter inch minus screen, preferably through a one-eighth inch minus screen with sufficient water, to form a material having a water content of from about 3% to about 20%, based on the weight of the mixture. The mixture is then packaged in a vapor-proof container, to maintain its water content. Damaged pavement is subsequently repaired simply by removing the mixture from the container and applying the material, at ambient temperatures, to the damaged areas.

Abstract: An improved expansion joint material for placement between adjoining slabs of concrete. The material is a non-porous water impermeable, polymerically bound reclaimed rubber and/or foam particles. The material is treated so as to be resistant to microbes, oil and fungi.

Abstract: An expansion joint seal for sealing the gap between adjacent deck members of a bridge, for example, includes a strip of elastomeric material having an expansion portion and side marginal portions. According to one aspect of the invention, the expansion portion is reinforced with one-way fabric. According to another aspect of the invention, the side marginal portions are reinforced with two-way fabric. According to a third aspect of the invention, prefabricated bed plate assemblies are provided with mounting members on which an expansion joint seal can be mounted, the bed plate assemblies being capable of being readily secured to the edges of the adjacent deck members.

Abstract: An expansion joint strip seal for use between spaced apart ends of sections of a highway, bridge, or the like, the strip seal having an elongate metallic rail with a C-shaped cavity therein embedded in the end of one of the sections, a second elongate metallic rail with a reverse C-shaped cavity therein embedded in the end of an adjacent section, and an elastomeric, elongate membrane having ear portions extending along its opposed edges, each of the ear portions being sealingly engaged by one of the metallic rails. The membrane, which is formed integrally in a single piece, has a central web portion, which is generally V-shaped in cross section, and each ear portion has an enlarged end portion and a transitional portion between the enlarged end portion and the central web portion. The transitional portion has upper and lower planar surfaces which sealingly engage planar sealing surfaces of an entrance of each metallic rail that engages such ear portion.

Abstract: An expansion joint for forming an adjacent seal between concrete slabs includes a foot for holding the joint in place during pouring of one slab and resilient longitudinal reinforcing elements for maintaining contact between the joint and the ends of the slabs during thermal expansion and retraction of the slabs.

Abstract: A bridge expansion joint is provided comprising an pair of blocks interconnected by a flexible sealing profile. Each block is formed by at least three vertically stacked layers made from plastic concrete compound. The two lower layers of plastic concrete are anchored to the bridge structure through an impregnation base coating. The impregnation coating is applied along the two edges of a expansion gap onto the roughened bridge structure. After fixing the size of the expansion gap, the two first layers are cast of a thickness corresponding to the height of the neighboring leveling courses of the roadway structure. The second layers are then cast to be a thickness corresponding to the total height of a protective covering placed on a waterproof insulation applied to the leveling courses and parts of the first layers, and the bearing course of the roadway structure.

Abstract: A joint bridging arrangement comprises a bridging unit having a central portion, side parts, and anchoring units adjoining the longitudinal sides of the side parts. The side parts are pivotably connected to the central portion for movement about a pivot axis parallel to the longitudinal axis of the bridging arrangement. Cleats or legs of the side part and anchoring unit are interengaged and relatively slidable at an acute angle relative to the upper side of the center part. The upper-most surface of the bridging unit includes a portion having a wedge shaped cross section corresponding to the acute angle so that the transition from the bridging to the anchoring units, and hence to the structural parts bridged by the joint is essentially stepless.

Abstract: Joint spaces within structural concrete bodies are filled with semi-rigid fillers to avoid adjacent concrete layer re-cracking and protect the concrete surface edges of the joint spaces against spalling by repeated impact loading. Inserts embedded in the fillers locationally restrict stress-induced fracture to the joint spaces and in spaced relation to the concrete bonding interfaces of the fillers so as to maintain filler protection for the concrete edges against spalling damage.

Abstract: Each of the recessed, confronting edges of adjacent concrete slabs in a roadway or the like has secured therein by a high density reinforced grout an elongated, rigid, prefabricated or precast edger strip, which also has an elongate recess in the edge thereof which faces on the space between the slabs. An elongate, semi-rigid, prefabricated cover member, which is generally T-shaped in cross section, has its upper, plate-shaped section positioned over the upper end of the space between the slabs so that opposite sides thereof project part way into the recesses in the edger strips, and has its downwardly projecting web section embedded in a sealing compound positioned between the confronting ends of the slabs. Remaining portions of the recesses in said edger strips are filled with a low modulus urethane compound.

Abstract: An improved dowel or tying bar and joint construction for transferring stresses across a joint between concrete slabs or structures and accommodating for shrinkage and expansion of concrete. The bar has a resilient facing attached to at least one side of the bar so that the concrete slab or structure can move in relationship to the bar in a direction substantially perpendicular to the resilient facing. The bar is arranged across the joint in a direction substantially perpendicular to the axis defined by the joint.

Abstract: A device for controlling the spacing of the plates on a bridging arrangement for expansion joints in bridges or the like, in which device one or more plates run parallel between edge beams defining the expansion joint and are mounted on cross-members bridging the expansion joint. The plate is coupled to the two edge beams, or each plate is coupled to an edge beam and an adjacent plate or to two adjacent plates, by means of resilient members arranged to act in shear. Each resilient member is secured by one end to an edge beam or a plate and by the other end to a connector that is resilient to bending. Each connector connects the resilient members of an edge beam and a plate or of two plates to one another. All the plates are connected to one another and to the edge beams by one or more continuous control chains comprising shear springs and connectors.

Abstract: A joint covering has an elastic mat that is cast in situ and lies on rigid plates bridge the gap. The plates are controlled by providing the mat with elastomeric projections on its underside which engage the plates. The elastic behavior of the mat is not impaired in any way as a result.

Abstract: An expansion joint is shown for use in joining adjacent concrete sections separated by an expansion slot such as in a roadway having concrete sections and a slot therebetween. The joint includes a preformed longitudinal sealing element which is formed of a resilient material and installed within the slot. An initially flowable adhesive material is applied between the sealing element and opposing side surfaces of the concrete sections making up the joint. The moduli of elasticity of the adhesive material and sealing element are selected so that forces exerted upon the joint by expansion and contraction of the concrete sections result in movement of the central sealing element, rather than exerting strain upon the adhesive bond.

Abstract: An improved method and composition for repairing cementitious surfaces is provided. A polymerizable urethane composition having an excess of isocyanate groups to account for water present in the reaction environment is utilized. The method utilizes water, e.g. surface moisture, to foam the polymer and provide a long-lived repair of the surface. The method is particularly applicable in the repair of concrete roadways.

Abstract: An expansion joint for sealing the channel between two sections of roadway has a plug and a fluid-polymer poured into the joint and allowed to set in situ in the channel. Enclosed within the fluid is a core of a mastic material which is more plastic and less elastic than the fluid-polymer. The elasticity of the fluid-polymer allows the joint to accommodate changes in the size of the joint due to e.g. thermal expansion and contraction. Plastic flow of the core permits changes of shape of the joint to be absorbed without causing excessive stressing of the sides of the channel to which the fluid-polymer adheres.

Abstract: An expansion joint adapted for sealing an elongated gap formed between two adjacent road sections. The joint provides a continuous support for vehicles crossing the gap while enabling the desired temperature responsive movement of the slab road sections. A pair of non-metallic elongated mounting strips are secured to the adjacent road sections on either side of the gap. An elongated seal strip is mechanically and adhesively secured between the spaced mounting strips for straddling the gap to exclude entry of undesired matter into the gap. A curable epoxy cement is employed to form a smooth transition vehicle support surface between the road sections and the seal strip.

Abstract: An expansion joint system for functioning as an expansion joint between concrete sections of a roadway surface or the like. Such roadway surfaces are normally provided with a slot for accommodating thermal expansion and contraction of the concrete and a boxed-out zone for receiving the expansion joint system. The expansion joint system includes a plate and sealants. The plate is provided with a lower or interior resilient winged section inserted into the slot with wings extending exteriorly to frictionally engage the surfaces of the slot and thereby effect centering and preclude the raising of the plate from the slot. The plate is provided with an upper or exterior section including support surface for resting on the boxed-out surface of the cement segments to thereby preclude the plate from dropping into the slot. A stem couples the upper and lower sections of the plate. A sealant then covers the horizontal support and fills in the boxed-out zone of the concrete.

Abstract: The present invention relates to an improved expansion joint for bridging e space between structural components susceptable to relative movement. The joint construction presents an uninterrupted transition between the structural components and is capable of compensating for vertical as well as lateral displacement of the joined parts. The device is capable of withstanding high load forces due to a novel self centering reinforcing rail.

Abstract: Means for spanning the joint between adjoining structural members of a bridge or like structure which is of the kind consisting in a body which runs along the joint and can be flexed to engage a bead or thickening along each edge of the body in a corresponding recess or groove in the adjacent member. In the particular case of the invention the bead or thickening is associated with a tongue which engages behind an upstanding nose in the recess of groove to promote the fastening.

Abstract: An expansion joint filler strip and cover assembly for a joint formed by spaced structural sections includes elongate base members secured to respective structural sections and having a joint therebetween. The base members have spaced apart, upstanding first and second and third walls with the third wall being substantially contiguous with the joint forming wall surface of the respective structural section. The first and second wall portions define an elongate, channel therebetween and the second and third wall portions define an elongate, recess therebetween with the third wall portion terminating in an edge spaced below the terminating edges of the first and second wall portions. A replaceable, elastomeric strip extends across the joint and has side portions secured to the base members with at least one side portion having an elongate flange received within the elongate recess and an outer surface even with the terminating edges of the first and second wall portions.

Abstract: A sectional joint for making surfaces from a cast material such as concrete, and a slab made therefrom. These consist of a strip or web with two faces, each face being formed with projecting portions and depressed portions which respectively extend into the cast material or are filled by the cast material.

Abstract: A seal and cover for expansion joints in roadways and bridges comprised of a block of elastomer having grooves extending downwardly from its top surface to allow for expansion and contraction. A metal plate is secured to the top of the elastomer block to protect the block and help carry the weight of vehicles over the joint. The plate may also have grooves in its top surface to reduce the likelihood of vehicles skidding as they cross the joint.

Abstract: End dam assemblies for sealing a gap between adjacent roadway or deck slabs comprise a series of elongate elastomeric end dam sections which are assembled in end-to-end array. The end dam sections are provided with layers of porous material which confront and engage each other when adjoining end dam sections are secured together. The layers of porous material enhance securance of the end dam sections to each other by providing an auxiliary material on each end dam section which is more easily bonded to the end dam sections and to each other than are the adjoining end dam sections directly to each other. The layers of porous material may also provide mechanical resistance to relative movement of the end dam sections.

Abstract: A distribution block, which comprises a body having a trapezoidal longitudinal section and toothing bars projecting on the said body and extending from an inclined face to the upper face thereof.