Abstract: An expansion joint system for bridging an expansion joint gap between two spaced-apart, underlying building or roadway structures. The expansion joint system includes a cover plate, at least one swing arm, sliding bearings engaged with the swing arms, and fasteners for engaging the swing arms to the cover plate. The swing arms include a receiving well configured for receiving a mechanical fastener to fasten the swing arms to the cover plate. The expansion joint system permits movement in response to a seismic or thermal event that causes expansion or contraction of the gap between structural members while maintaining coverage of the gap, and following a seismic or thermal event, the maintains a substantially-centered position of the cover plate.

Abstract: A cabin monument arrangement for a passenger cabin of an aircraft, has at least two cabin monuments arranged next to each other, aligned substantially parallel and forming a gap. The gap includes a gap covering in the fastening region of the first lateral monument part and of the second lateral monument part in the region of the front edge portion of the respective cabin monument. In each case, a first contour-adapted rigid fastening strip is on the fastening region and a second contour-adapted, rigid fastening strip is on the second fastening region. A covering element is between the first and second fastening strips for covering the gap between the first monument part and the second monument part, the covering element formed from a flexible covering material of thin design. A corresponding covering of the gap between the cabin monuments can therefore be achieved with sufficient flexibility and material width.

Abstract: A fire and/or water resistant expansion joint system for installation into a building joint in vertical and horizontal configurations is designed such that it can be used for either an inside or outside corner. The system comprises a core having a fire retardant therein. A layer of a water resistant material is disposed on the core to facilitate the compression of the expansion joint system when installed between substrates. The system can be delivered to a job site in a pre-compressed state ready for installation into the building joint.

Abstract: This disclosure discloses a wet seal system for use with a wall comprised of exterior insulated wall panels wherein the wet seal system is used with caulking to seal the joints between the exterior insulated wall panels. The wet seal system generally comprises a vertical seal, a horizontal seal, an upper wet core plug and a lower wet core plug, wherein each of the vertical seal, horizontal seal, upper wet core plug and lower wet core plug is configured to compress such that the wet seal system can seal walls with large construction tolerances.

Abstract: A finger joint having a bridging cover plate, which enables a steel plate having a thickness much smaller than that of a conventional finger to be used and allows the vertical rotation of an upper bridge structure. The finger joint includes: a bridging cover plate installed on a first structure and supported to a second structure across a gap so as to support a load of a vehicle passing over the gap, and configured to allow relative movement between the first structure and the second structure in a direction in which the distance of the gap changes; a first finger unit connected to the bridging cover plate; and a second finger unit installed on the second structure so as to allow relative movement relative to the first finger unit in a direction in which the distance of the gap changes.

Abstract: An insulated panel system includes a joint disposed between two insulated panels. The joint has a male portion and a female portion. The female portion has a flange, sidewalls, and a base that can be secured to an existing structure. The male portion includes a top plate with sealing sides that rest against the face of the insulated panel when inserted into the female portion. The sealing sides prevent warm air and/or moisture from ingress into a refrigerated space defined by the insulated panels. Also disclosed is a sealing joint for insulated structural panels.

Abstract: A surface recess repair assembly is disclosed. The surface recess repair assembly has a surface recess repair housing that forms a cavity. The surface recess repair assembly also has a fill material disposed in the cavity. The cavity is sealed by the surface recess repair housing. Also, the surface recess repair housing is flexible. The fill material is a viscoelastic material.

Abstract: The present invention relates to a expansion joint to bridge an expansion gap between two parts of concrete slabs used in floor construction, especially in the manufacture of concrete floors such as for example in industrial floors. Such expansion joints are evidently required to take up the inevitable shrinkage process of the concrete and to assure that the floor elements can expand or contract such as for example occur by temperature fluctuations and resulting in a horizontal displacement of the floor panels vis-à-vis one another.

Abstract: Disclosed herein is a weep hole insert (10, 10?) for providing a barrier in a weep hole (11). A handle (24, 24?) for facilitating insertion of the insert (10, 10?) in the weep hole (11) is also disclosed.

Abstract: A system for creating a durable seal between adjacent horizontal panels, including those that may be curved or subject to temperate expansion and contraction or mechanical shear. The durable seal incorporates a plurality of ribs, a flexible member between the cover plate and the ribs, and may incorporate a load transfer plate to provide support to the rib from below, and/or foams of differing compressibilities.

Abstract: A seismic expansion joint cover assembly installed at an expansion gap between a first structural member on one side of a gap and a second structural member on the opposite side of the gap including a cover panel bridging the gap having at least one connector joining one edge of the cover panel to the first structural component to allow movement of the cover panel. The expansion joint cover assembly includes at least one slide support, which attaches to the second structural member, and which includes a track having a lift component located on the track to lift the cover panel. The expansion joint cover assembly also includes a rider assembly for engaging with the track of the slide support. One or more spring assemblies are attached to the second structural member and the cover panel. The expansion joint cover assembly is mechanically latched when the system is in the normal service position, but has the capability of becoming unlatched in response to large displacements.

Abstract: An expansion joint seal system which includes intumescent to protect uncoated edges of substrates. A fire rated compressed expansion joint sealant is provided having an intumescent proximate, but below the water-resistant top of the fire-retardant foam, so that when exposed to fire, the intumescent expands to protect the exposed vertical surface of the adjacent concrete substrate. The end of the concrete is therefore protected in a manner which does not require joint overlap between the horizontal fire resistant coating and the compressible sealant.

Abstract: A waterproof expansion joint comprises a ballast protection plate and at least one locating device configured to retain the ballast protection plate over a deck joint. A flexible sealing member located below the ballast protection plate can include at least one flange portion and at least one expansion feature. Each expansion feature can include a shape preformed into the flexible sealing member extending downward into the deck joint and configured to deflect, enabling variation in the width of the flexible sealing member to match the width of the deck joint.

Abstract: The invention relates to a device (1) for bridging an expansion joint (2) in the region of a carriageway, comprising a superstructure (5) and a substructure (6), and the superstructure (5) comprises at least one elastic element (15) and the substructure (6) forms a support for the superstructure (5). At least one holding element (19, 20) is disposed in the superstructure (5), which is at least partially embedded in the elastic element (15).

Abstract: A waterproof expansion joint comprises a ballast protection plate with one or more centering tabs. Waterproof receptacles, or T-cups, are used to provide a waterproof layer under the ballast protection plate and around the centering tabs. Sealing tape and a spray-based waterproof membrane are installed with the T-cups. Once the ballast protection plate is placed over the deck joint with centering tabs extending downward into the T-cups, a bond breaker is applied. Finally, a second layer of waterproof membrane is applied to the top of all elements of the waterproof expansion joint.

Abstract: An expansion joint sealing system may be used to provide a continuous and seamless waterproof membrane across a gap in an expansion joint. The expansion joint sealing system includes sealing members that are provided with a keyway for accepting and interlocking a coating membrane. Also disclosed are an expansion joint including spaced apart structural members and the sealing system and a method for sealing a gap between two spaced apart structural members.

Abstract: An expansion joint sealing system may be used to provide a continuous and seamless waterproof membrane across a gap in an expansion joint. The expansion joint sealing system includes sealing members that are provided with a keyway for accepting and interlocking a coating membrane. Also disclosed are an expansion joint including spaced apart structural members and the sealing system and a method for sealing a gap between two spaced apart structural members.

Abstract: Disclosed is a thermoplastic material and method for repairing damaged asphaltic surfaces by filling “potholes” or damaged regions with thermoplastic fill that is placed in the damaged region of an asphaltic surface, heated to melt the fill in the damaged region and when sufficiently filled a thermoplastic color matched upper patch sheet is laid thereon and heated completing the asphaltic surface.

Abstract: A roadway-support bird protection arrangement and method for preventing birds from entering and damaging hollow cores of elongated roadway support structures. The elongated roadway support structures are longitudinally spaced apart to allow for expansion and contraction therebetween. The inventive arrangement includes an elongated foraminous web of material having generally parallel side edges, a reinforcement arrangement on its side edges, an attachment member spaced along the reinforcement member to permit the foraminous web to be supportively hung between adjacent, longitudinally spaced apart roadway support structures so as to keep birds from entering the support structures. The elongated foraminous web is preferably formed in a “V” shape with elongated side wings thereon for disposition between and attachment to the roadway support structures.

Abstract: A composition used for sealing and strengthening the joints in an asphalt road surface and subsurface to prolong the useful life of the road utilizes a polymer modified cationic maltene emulsion containing polymer modified maltene oils and resins, and surfactants/and wetting agents. The emulsion is applied to the longitudinal joints and other joints in the asphalt pavement surface. The emulsion reduces voids in the asphalt pavement and chemically improves the asphalt binder properties, thereby altering the modulus of elasticity of the asphalt binder so that the resistance of the pavement to tension stress is increased, and the water absorption of the pavement is reduced.

Abstract: A modular center plate for a cover that bridges the expansion gap and is supported by frame members of an expansion joint cover is made up of a plurality of formed members, each formed member being rectangular in plan and of uniform cross-section along an axis and having side edges parallel to the axis. The formed members are arranged with their side edges adjacent each other and with their ends overlying the support surfaces of the frame members of the expansion joint cover. End frame members are attached to the end edges of the formed members.

Abstract: An improved sealant cap which is comprised of a flexible material, preferably, but not necessarily made of lead or other material having the same properties of lead, having a first arm member which is inserted downward into the caulking material after the caulking material has been in place within the joint. The downward depending arm portion extends from a cap portion downward, so that as the arm member is pushed into the caulking material, the upper cap portion spans across the joint and rests on the adjoining stone members. There is further provided a plurality of ridges formed on the undersurface of the cap portion of the improved cap cover with the ridges increasing the area (by 50%) of the underside of the cap for the sealant to adhere to and the surface of the stone in such a manner as to prevent the cap from separating from the stone and insuring an elastic protection for the joints.

Abstract: A sealing element for the recessed seat of an expansion joint in a concrete structure having an elastomeric profile (20) formed by two longitudinal lateral flanges (21) to be fixed to the end edges of the concrete structure (11), and a central portion (22) formed by walls depending from said flanges and converging to a central area to be fitted inside the seat (12), and shaped to support the hydrostatic pressure upstream of the concrete structure (10). A flexible duct (30) is installed inside the seat (12) below the central portion central area and provided with radial bores (31) opened to the inside of the seat to allow the selective feeding of precatalyzed polymeric resin to the inside of the seat (12), after the elastomeric profile (20) has been mounted and affixed to the concrete structure (10). The tube can be separate from the profile, attached to the central area, or the central area can have a W shape and the tube be within the lower portion of the W.

Abstract: A system for sealing joints in roadways wherein nose plates are attached to each side of the joint to form a gap between the nose plates. A lower seal element is located in the gap between the nose plates. A vapor barrier is provided that extends between the top portions of the two nose plates. The vapor barrier includes edges that are attached to the tops of the nose plates utilizing anchor caps. An upper seal may be included that is located on top of the lower seal element. The upper seal is formed by applying a liquid sealant over the lower seal element and vapor barrier or by installing a preformed gasket that is anchored to the nose plates using the anchor caps.

Abstract: The present invention relates to a joining method and a joining structure as well as a form for concrete products. A protruding portion provided at the front end of a seal member of elastic material attached to one concrete product is inserted through an opening formed in a joining face of the other concrete product into an attachment hole of enlarged diameter provided at a depth of the opening, while bringing a closing press contact portion of the seal member into press contact with inner surfaces of the opening to achieve an airtight condition inside the attachment hole, followed by filling grout into a space defined between inner surfaces of the attachment hole and the protruding portion and setting the grout there to join the concrete products together.

Abstract: A joint seal is designed to maintain its proper position in the joint groove opening port to create an effective seal between the inner walls of the joint groove and to resist peeling or damage, even in an event, such as an earthquake, during which the adjacent outer wall materials shift; and to have a joint base material 2, a sealing material 3 and a heart wood 8. The joint base material 2 has at least two seal tongue pieces 14a and 14b projecting from the outer face of side plates 5, 5. A number of small openings 8 to allow sealing material to be pressed out at the insertion of heart wood 8 is punched between the seal tongue pieces 14a and 14b, and release mold sheets 18a and 18b are attached to joint base material 2 as a cap member covering the small openings 8 and the opening ports of side plates 5, 5.

Abstract: In order to join concrete products to be joined together each having an joining face, an opening formed in the joining face, and an attachment hole communicating with the opening, a junction member body has on its at least one end a swelled protruding portion which is inserted through the opening into the attachment hole. The junction member body further has a plurality of spaces for cleavage extending along the direction of thickness of the junction member body, each of the spaces for cleavage being cleaved open by an external force caused by an earthquake or the like, to present satisfactory extensibility and collapsibility.

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: An expansion joint system which is designed to accommodate forces applied to highway construction during normal changes in ambient conditions, and which is also designed to withstand seismic forces which may be applied in transverse and longitudinal directions. The system comprises spaced-apart transverse beams which are placed in a gap defined between adjacent sections of highway construction such as in a bridge. Longitudinally extending support bars are positioned beneath the beams, and the ends of the bars are located in the interiors of boxes associated with the highway sections. One set of boxes confines bar ends against transverse movement but permits longitudinal movement. The other set of boxes permits the transverse movement but limits longitudinal movement.

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: To avoid leakage in concrete structures with dilatation joints and to prevent dirt from accumulating in the joints there has been developed a dilatation joint element which is easy to mount, reliable and essentially maintenance-free. The dilatation joint element according to the invention is comprised of opposed, longitudinal angle elements interconnected in pairs and made of metal with interposed jointing compound, reinforcement bands and robber elements. With curved band sections and rubber elements between the angle elements and a curved jointing compound section which is attached to the upper band section there is provided a supporting, power-compensating and power-distributing function when the joint is subjected to load, both at compression, expansion and shearing, providing a tight, reliable and loadable joint with good fatigue strength.

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: A flexible partitioning member for concrete slab is disclosed, and this partitioning member divides the area (where the concrete slab is to be formed) into a plurality of small areas. The conventional partitioning members are made of wooden material, and can be used only for a horizontal concrete slab. The partitioning member according to the present invention is made by extruding a synthetic resin. The partitioning member includes a main body and a cap, and the cap is detached after the curing of the concrete slab. Into the space which is formed by detaching the cap, a sealing material is filled, so that rainwater cannot intrude into the concrete slab. Further, an inclined cutting line is provided, so that an extra portion can be detached, and that the partitioning member in this case can be used in an inclined concrete slab. In this case, the rainwater is better drained.

Abstract: A waterstop/mechanical seal for use with an expansion board providing a watertight seal between adjacent concrete sections. The waterstop/mechanical seal comprises a continuous diaphragm element for covering one end area of the expansion board when positioned between the adjacent concrete sections. The waterstop/mechanical seal includes a top portion adapted to lie in general co-planar relationship with an upper surface of the adjacent concrete sections. Spaced sidewalls are integrally connected to and extend a predetermined distance downwardly from the top portion along an outside surface adjacent to one end area of the expansion board. Each of the sidewalls include at least one arm projecting laterally outwardly and spaced below the top portion, which arms are provided with a plurality of waterstop means for channeling liquid away from the expansion board.

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 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: A method and apparatus for defining an expansion joint seal with a belt comprising a body portion elongated in the longitudinal direction and having a first edge bead at one end and a second edge bead at the other end. A first edge bead is inserted within a larger diameter first cylindrical cavity elongated in the transverse direction and defined by inner and outer recesses between a first clamp bar and a first clamping surface. A second edge bead then is inserted within a larger diameter second cylindrical cavity, also elongated in the transverse direction and defined by a second clamp bar and a second clamping surface. Each clamp bar then is fastened to locate a bead edge loosely within a surrounding cavity. Finally, a sealant material is injected under pressure into each cavity, so as to surround the edge bead loosely positioned therein, and thereby create a tight seal.

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: A seal-cover is provided for paving material filled pavement openings such as pot holes. A hot mix (used in good weather) or a cold mix (used in bad weather) of asphalt paving repair material is used to fill a hole in the existing pavement. A coating or layer of tar is put down covering the asphalt fill in a pavement hole and extending outward beyond the hole periphery to the extent of being approximately eight inches larger than the hole patch. A roofing material such as roofing tar paper, an asphalt or tar and fiberglass coating material or even a vinyl flooring material slightly less area than the layer of tar is then laid down over the layer of tar previously laid down. This water tight construction over asphalt fill repaired pot holes, keeping water out of patch areas, greatly aids in new repair standing up to heavy traffic and thereby greatly extends patch life running to many years.

Abstract: A road joint is disclosed formed by two rigid frames (4) joined together by a flexible strip (2) formed by an elastomer body having in cross section the form of an upside-down truncated V with thick legs and reinforced by a central horizontal rigid plate (1). The frames are disposed on opposing sides of the center of the joint and each include a lower horizontal heel (3) on which a corresponding leg of the elastomer body rests and is adhered. Rigid plate (1) includes two lateral members slanted slightly with respect to the horizontal and the heels of the frames (4) have upper surfaces (8) parallel to these lateral members. The slanted heels (3) of the rigid frames (4) orient the legs of the flexible strip (2) such that vertical deformation of the flexible strip (2) is minimized.

Abstract: A gasket for a flush expansion joint cover comprises a longitudinally continuous central body portion and two longitudinally continuous side portions, one at either transverse edge of the central body portion. The central body portions and the side portions are comprised of a colorable thermoplastic rubber and are co-extruded to form an integral gasket structure. The side portions, which are adapted to keylock with mating grooves in structural members of the expansion joint cover, are harder than the central body portion to enhance retention of the gasket in place during use. The central body portion has a cellular core structure and a slightly concave upper surface to remain substantially smooth and flush with adjacent surfaces throughout the complete movement cycle of the expansion joint.

Abstract: The device for the interconnection of two roadway parts (1a, 1b) separated by an expansion joint (3) consists of a plurality of joint strips (2) arrnaged end to end and in which each joint strip (2) comprises at least one deformable zone (4) extending parallel to the joint (3), between two fastening elements (5a and 5b) connected to the two roadways parts (1a, 1b), respectively. The deformable zone (4) consists of alternating deformable carrying elements (6) and bellows (7). Two undeformable carrying elements (18) belonging to the fastening elements (5a, 5b), respectively, are situated on either side of each bellows (7). Each of the deformable carrying elements (6) has a horizontal metal plate situated in the upper part of the joint strip (2) and carried by two elastomer blocks which are deformable by horizontal shearing and arranged symmetrically relative to a vertical plane parallel to the joint (3). Each of the bellows (6) consists of an elastomeric, continuous, relatively thin and non-plane wall.

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 connector for a concrete structure including two generally flat plates connected together along one edge to form an elongated structure having substantially an L-shaped cross section. One plate has an opening sized to allow unset concrete to flow through the opening and to hold the plate firmly within the concrete when it is set. When this plate is held within the concrete, the other plate protrudes from the concrete and is available for connection with another such connector by direct welding or clamping of the two plates together.

Abstract: An expansion joint for use between spaced apart ends of adjacent sections of a highway, bridge or the like, the expansion joint having a pair of aligned boxes embedded in the pavement material of the ends of the sections, one or more support rails each of which is slidingly supported at its opposed ends in the aligned boxes, and one or more intermediate rails between the spaced apart ends and extending transversely of the support rails, each of the intermediate rails being affixed to and supported thereby. Each of the boxes has a removable top plate whose top surface is coplanar with the driving surface of the highway, bridge or the like, the top surface having a steel plate with upper and lower layers of an organic material affixed to its upper and lower surfaces, respectively.

Abstract: A polymer plastic contraction-expansion joint element for the aggregate decking areas of a swimming pool. The element when used as a contraction joint is comprised of an elongated generally hollow body adapted for burial in the aggregate just below grade level. The body is formed of a bottom wall and parallel spaced apart upright sidewalls terminating at their upper distal ends in an open pocket including longitudinal protuberances oppositely extending along the inner face of the sidewalls. Adapted to overlie the body pocket at grade level in a removable mounting relation thereto is an imperforate polymer plastic cover having elongated skirts downwardly depending from the opposite longitudinal side edges thereof. The skirts are insertable between the body protuberances in a springlike interfit enabling the cover to be removed and replaced as appropriate.

Abstract: An expansion joint for settable compositions such as concrete and the like comprises a base portion which is embedded in the composition before it sets with its upper surface adjacent the surface of the composition, and a cover portion which is engagingly received in a slot defined by the removal of a portion of the upper surface of the base portion after the composition hardens around the base. The cover portion is sufficiently wide to cover gaps in the composition adjacent the edge of the base portion. Two or more base portions may be secured together to provide an expansion joint to variable depths in the composition.

Abstract: An expansion joint and form for concrete floors, consisting of a free-standing assembly comprising a vertical asphaltic board, a metallic panel flatly abutting against the asphaltic board, and a number of load transfer dowels or rods slidingly passing horizontally through the board and panels to extend on each slide of the panel and board. The rod partially engages at one end a sleeve and one rod section is covered with grease. After fresh concrete is successively poured on each side of the expansion joint, the concrete will harden unto the board, the panel and the sleeve exclusively of the rod section covered with grease. Hence, the rod will be movable relative to the sleeve and surrounding concrete slab, allowing for relative horizontal displacement of the pair of proximate concrete slabs.

Abstract: A method of sealing a joint between two adjacent members comprises the steps of forming a gap between the members to be sealed and then introducing a bead of resilient solid material into the gap. The bead is subsequently treated to render it temporarily plastic or fluid so as to cause it to adhere to the facing edges of the members. This treatment can best be effected using a hot air blower. The bottom of the bead may be provided with a non-adhesive strip to prevent adhesion to the bottom of the gap, or the process may be performed in such a way that the bottom portion of the bead is not fused so that it does not adhere to the bottom of the gap.