Abstract: A steel-concrete composite bridge deck slab using inverted U-shaped shear connectors and a method for constructing the same. The steel-concrete composite bridge deck slab includes a bottom steel plate and a bridge deck concrete layer, wherein inverted U-shaped perforated steel plate units are arranged on an upper surface of the bottom steel plate, and bar-mat reinforcements are arranged at upper ends of the inverted U-shaped perforated steel plate units.

Abstract: An anchor for connecting a concrete layer of a floor to a cellulosic layer of the floor, the cellulosic layer comprising a plurality of cellulosic members joined together in a side-by-side arrangement, the anchor including a first portion to extend between two adjacent cellulosic members of the cellulosic layer into the concrete layer of the floor. The first portion includes attachment structure to attach the first portion to one of the two adjacent cellulosic members of the cellulosic layer to attach the anchor to the cellulosic layer. An upper edge margin of the first portion is disposed within the concrete layer when the first portion is attached to the cellulosic layer. A second portion extends from the upper edge margin in a first direction that is transverse to the first portion. The second portion is spaced apart from the cellulosic layer and embedded within the concrete layer of the floor to attach the anchor to the concrete layer.

Abstract: A system which creates a durable seal between adjacent horizontal panels, including those that may be curved or subject to temperature expansion and contraction or mechanical shear. The durable seal system 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 cores of differing compressibilities.

Abstract: A system which creates a durable seal between adjacent horizontal panels, including those that may be curved or subject to temperature expansion and contraction or mechanical shear. The durable seal system 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 cores of differing compressibilities.

Abstract: An elongated gap filler is provided including a first panel and a second panel in a V configuration joined at an apex, a first extension wall extending from the first panel, a first sealer wall extending downward and transversely to the first extension wall, and a second extension wall extending from the second panel. The first sealer wall can seal against a surface of a wall and set a depth of insertion of the first and second panels and first extension wall into a gap between building surfaces, e.g., a wall top and a ceiling or roof. The second extension wall can be arcuate and can bend against the ceiling or roof. The first sealer wall can be arcuate and can bend against a vertical wall surface. The apex can include a U-shaped groove to enhance articulation of the panels. A related method of use also is provided.

Abstract: Precast construction elements are described suitable for use in high seismic area. The precast construction elements can be precast, pre-topped double tees. The precast construction elements incorporate a passive energy dissipation device in a flange. The energy dissipation device provides a ductile connection having a deformation capacity of larger than 0.6?. Adjacent elements are connected to one another at joints that include the passive energy dissipation device. Passive energy dissipation devices can be passive hysteretic dampeners, such as U-shaped flexural plates. Passive energy dissipation devices can be bar dissipaters (e.g., grooved dissipaters). Also described are passive hysteretic dampers that include U-shaped flexural plates held in conjunction with a reinforcement element that defines a circle around which the flexural plate can bend.

Abstract: An expansion joint sealing system for bridging and sealing a gap located between two spaced-apart structural deck members. The expansion joint sealing system includes an elastomeric seal member and a substantially rigid plate member. The elastomeric seal member is fixedly attached to an underlying structural deck member and is able to expand and contract in the longitudinal direction in relation to the traffic direction across the expansion joint. The rigid plate is not fastened to the elastomeric seal member with mechanical fasteners or other fastening means, but is slidingly engaged with the elastomeric seal member through an elongated guide member. As the rigid plate member is not fastened to the elastomeric seal member, it is able to move along a guide member in a direction that is transverse to the direction of traffic across the expansion joint.

Abstract: An expansion joint seal system for supporting an expansion joint seal. The system includes an installation member and a base member.

Abstract: Various embodiments of the present disclosure provide a load transfer plate and load transfer plate pocket that co-act to transfer vertical or substantially vertical loads from one concrete slab to the adjacent slab in an enhanced manner by optimizing the positions of the load transfer plate relative to the adjacent concrete slabs for load transfers between the adjacent concrete slabs.

Abstract: Various embodiments of the present disclosure provide a load transfer plate including a non-symmetrically shaped body having a semi-cylindrical first portion configured to protrude into and be secured in the first cast-in-place concrete slab and a non-semi cylindrical second portion configured to protrude into a load transfer plate pocket secured in the second cast-in-place concrete.

Abstract: A telescopic bar for load transmission which, if anchored in concrete slabs, creates a support between them, forming semi-rigid joints, and prevents differential settlement of the slabs, by enabling rotation in the vertical direction about a joint axis. The telescopic bar transmits a load from one slab to an adjacent slab, ensures perfect leveling of the slab surfaces, and enables removal and reuse of the slab at a later time. The telescopic bar may be used for constructing floors of easily manufactured prefabricated materials, and creates a new paradigm for the construction of roads, seaports, airports, railways, industrial areas, etc.

Abstract: A compliant trim for use between concrete slabs is disclosed, intended to seal the joints and provide a decorative cover over the forms. The compliant trim is placed on the forms prior to the pouring of concrete. The compliant trim contains features which anchor the compliant trim to the slab at numerous points along its length, thereby constraining the compliant trim against any shrinkage effects, and doing so in a manner that introduces minimal stress concentration into the slabs. When the compliant trim is anchored to both of the adjacent slabs, it is capable of following slab motions due to thermal expansion or other environmental effects. The surface of the compliant trim may be used to support the screed. Additionally, the compliant trim may be used to produce a chamfered or radius edge, thereby eliminating the need to radius-trowel the slab.

Abstract: An expansion joint cover plate assembly for covering a gap between first and second sections of a building formation such as wall, floor or ceiling of a building. The assembly includes a cover plate, a support structure for supporting the plate relative to the building formation and a spring biasing structure for holding the plate against the support structure.

Abstract: A roadway joint device for providing a drivable joint section between a road and an adjoining structure, particularly a bridge structure, includes at least one joint element placed on a sliding surface adjacent to the bridge structure. A longitudinal axis of the joint element is arranged substantially parallel to a plane of the roadway and a bridge end section of the bridge structure. Joint gaps with a specified gap width are arranged between the joint element and the adjoining bridge end section and/or an adjoining retaining device arranged at a distance to the bridge end section. The joint element is attached to at least one rod, the rod being arranged substantially in the direction of the longitudinal axis of the bridge structure, anchored at one rod end in the bridge structure and another rod end thereof in the retaining device.

Abstract: The present invention relates to a cofferdam deformation-adaptive impervious composite geomembrane structure and construction method thereof, which applies mainly to high rockfill cofferdam, earth and rockfill dam and the like employing composite geomembranes for seepage control in hydraulic and hydro-power engineering. The cofferdam deformation-adaptive impervious composite geomembrane structure and construction method according to the present invention can reduce damage degree of the connections between the composite geomembranes and the concrete toe slabs or the joints between the composite geomembranes and the concrete caps on the top of the concrete impervious walls.

Abstract: A slip dowel tube and elongate dowel are disclosed herein which allow for transverse and longitudinal movement of two adjacent concrete slabs and also limit vertical movement of the two concrete slabs. The slip dowel tube is housed within a sheath that provides a void to allow for transverse movement of the slip dowel tube when the first and second slabs move transversely with respect to each other. The elongate dowel is slidably disposed within the main tube to allow for longitudinal movement or movement which brings the two slabs closer to or further away from each other. This system also limits vertical movement between the two adjacent slabs.

Abstract: A method for creating a tapered spiral welded conical structure where the overall shape of the cone is first graphically slit axially and unwrapped, and then a series of construction arcs and lines are created to form the edge lines of a strip that can then be wrapped (rolled) to form a tapered conical structure. The edges of the spirally wound strip can be welded together, and a very large conical structure can thus be achieved. Various construction options are presented from a constant width strip to strip made from straight segments. Equations are given for the formation of the strips to enable those skilled in the art of spiral welded tubing to practice the invention.

Abstract: An expansion joint system includes: a core; and a layer of an elastomer disposed on the core. The core and the layer of elastomer disposed thereon form an elongated section, the elongated section configured to be oriented vertically between substantially coplanar substrates. The expansion joint system further includes a termination section located at one end of the elongated section and comprising a flared end forming an angle with the elongated section and configured to direct fluid and/or particles and/or solvents away from the expansion joint system.

Abstract: A synthetic turf border system that utilizes multiple turf border elements of the same or different lengths and shapes to provide a flexible synthetic turf border system that cleanly affixes synthetic turf around an entire area regardless of the shape of the area is presented herein. The presented synthetic turf border system conforms to the shape of a given area by either providing pre-shaped angular and non-angular components, or by allowing individual elements, namely turf border bases, to rotate through degrees of arc in relationship to each other as necessary to fit the area. Synthetic turf is attached to the border bases then cut before final securement to the system.

Abstract: An apparatus and a method by which one end of a connecting rod is embedded in a first (e.g., precast) concrete panel and the opposite end of the connecting rod is moved inwardly of and affixed within an opposing rod receiving channel that is formed in an adjacent (e.g., precast) concrete panel so as to form a reliable joint for connecting the first and adjacent panels to one another. The apparatus and method have particular application in roadway construction and/or repair by creating a continuous flat driving surface to support vehicular traffic. Each of the connecting rod of the first concrete panel and the rod receiving channel of the adjacent concrete panel are axially aligned with one another and located so as to be separated from and spaced below the respective tops of the first and adjacent panels.

Abstract: A method of installing an edging system for a unit pavement system includes positioning a paver-contacting surface of an edge restraint against an edge of a unit pavement system including a plurality of paver units, and driving a plate-like stake in a generally horizontal direction underneath at least one paver unit of the plurality of paver units and into a granular material layer upon which the unit pavement system is supported such that the plate-like stake is operatively connected with the edge restraint. The edge restraint includes a horizontal section and a vertical section joined at a corner. The vertical section extends upwardly from and generally perpendicular to the horizontal section. An edging system for a unit pavement system is also disclosed.

Abstract: A pavement slab including top and bottom surfaces, first and second longitudinal side surfaces, and first and second transverse side surfaces. The slab includes a first and second plurality of transverse holes formed within the first and second longitudinal side surfaces, respectively, a first and second plurality of longitudinal holes formed within the first and second plurality of transverse holes, respectively, and plurality of dowel bars. Each of the holes is sized and shaped to receive slidably a corresponding one of the plurality of dowel bars. Each of the dowel bars is slidable between a retracted position and an extend position in which the dowel bar forms a joint between the slab and another slab or preexisting pavement.

Abstract: A cover assembly for bridging an opening located in an expansion joint between two spaced-apart structural members. The cover assembly includes a coverplate having a rigid plate member that is engaged with a resilient elastomeric cover. The cover assembly is affixed to the underlying structural members by base members. The proper positioning of the cover assembly within the expansion joint gap is maintained through a positioning assembly that is engaged with the coverplate and base members.

Abstract: A pre-fabricated pavement slab installation and replacement system is provided. The system includes a connector having an axial opening therethrough and engagement surface within the opening. The system further includes a pavement slab and an adjacent pavement slab, wherein a portion of the connector is embedded in the pavement slab and a remaining portion of the connector is exposed. The adjacent pavement slab has an interconnection slot, that can cover the remaining portion of the exposed connector. The system further provides that under the condition that the pavement slab and the adjacent pavement slab are cut apart, the connector is cut into a first half and a second half, wherein the first half of the connector contains the first engagement component and the second half of the connector contains the second engagement component. The first half of the connector can be subsequently removed by engaging the engagement surface.

Abstract: An expansion joint formed within a channel between two adjacent road surfaces and a method of preparing an expansion joint. The joint is formed within a channel having sides each extending from an adjacent road surface to a bottom side of the channel. The joint construction may include at least one layer of a binder covering at least a portion of the sides of the channel, and one or more layers of aggregate chips and the binder covering the at least one binder layer so as to fill the channel to at least the top of the road surface. The cumulative surface area of the two channel sides may be greater than the cumulative surface area of two channel sides each planar and perpendicular to the bottom. The joint construction may include a plate on the bottom side of the channel. The joint construction may include a flexible sheeting between the plate and the at least one binder layer.

Abstract: An apparatus and a method by which a plurality of connecting rods are located within and slidable through a first concrete panel so that the connecting rods extend outwardly from the first panel for receipt inwardly of a second concrete panel at mating channels formed therewithin, whereby the first and second concrete panels are joined together such as, for example, in the case of roadway construction. A plurality of slots which are formed through the top of the first panel communicate with respective ones of the plurality of connecting rods. A tool is moved into contact with the connecting rods by way of respective ones of the slots. The tool applies a pushing force to each of the connecting rods to cause the rods to slide through the first panel and into receipt by the mating channels of the second panel to establish a reliable joint therebetween.

Abstract: An expansion joint formed within a channel between two adjacent road surfaces and a method of preparing an expansion joint. The joint is formed within a channel having sides each extending from an adjacent road surface to a bottom side of the channel. The joint construction may include at least one layer of a binder covering at least a portion of the sides of the channel, and one or more layers of aggregate chips and the binder covering the at least one binder layer so as to fill the channel to at least the top of the road surface. The cumulative surface area of the two channel sides may be greater than the cumulative surface area of two channel sides each planar and perpendicular to the bottom. The joint construction may include a plate on the bottom side of the channel. The joint construction may include a flexible sheeting between the plate and the at least one binder layer.

Abstract: Expansion joint system of a concrete slab arrangement, comprising an expansion joint reinforcement to be arranged between a first and a second concrete slab (1, 2), the expansion joint reinforcement comprising at least two local dowels (3)transferring loads perpendicular to the slab plane. The dowels comprise a dowel plate (4) and a casing part (5). The dowel plate (4) and the casing part (5) are attached to the concrete slabs on different sides of the joint. The casing part (5) prevents the dowel plate from adhering to the concrete slab and allows the dowel plate (4) to move inside the casing part and thus allows the movements of the slabs (1, 2) in the horizontal direction. The dowels (3) are installed alternately relative to the joint so that the casing parts (5) of the adjacent dowels (3) are always installed on different sides of the joint.

Abstract: Tactile detection embedment plates used in pedestrian walkways releasably aligned by a bracket on at least one of the embedment plates. The bracket can be mated with a bracket on another plate to define a receiver yoke in which a wedge is disposed for a releasable plate assembly connection.

Abstract: Pavement interface (10) and method of creating a pavement interface. The pavement interface (10) includes a first section of pavement (12) having a zigzag-shaped trailing edge (12.1) and a second section of pavement (14) having a complemental zigzag-shaped leading edge (14.2) which abuts the trailing edge (12.1) of the first section of pavement (12). Thus, a boundary between the two sections (12, 14) of pavement is zigzag-shaped.

Abstract: A jointing structure comprising multiple steps provided face to face at the coaxially built traveling path ends with an expansion gap between, multiple elastic members respectively mounted inside the multiple steps, and a joint block mounted on the multiple elastic members across the expansion gap. Multiple supporting blocks and one or more than one intermediate joint block are mounted inside the multiple steps with the joint block between. The multiple supporting blocks, the joint block and the one or more than one intermediate joint block are of concrete. The elastic members are joined together across the expansion gap. The elastic member on one side is fixed to the inside of the step on one side and then subjected to deformation toward the bridge girder axis, and thereafter, the elastic member on the other side is fixed to the inside of the step on the other side.

Abstract: A cover plate system for a gap (15) between two structural members (10, 20) is provided. The system includes an elongated cover (30) that extends across the gap (15) from a first structural member (10) to a second, spaced-apart structural member (20). The cover plate system further includes damped spring anchors (40) for engaging the cover plate (30) to an underlying structural member (10) and dampers (50, 60) for absorbing energy imparted to the cover plate (30) by vehicular traffic. The cover plate system minimizes the strain energy that is absorbed by the cover plate (30), which results in less cover plate slapping and bouncing during operation.

Abstract: A pre-fabricated pavement slab installation and replacement system is provided. The system includes a connector having an axial opening therethrough and engagement surface within the opening. The system further includes a pavement slab and an adjacent pavement slab, wherein a portion of the connector is embedded in the pavement slab and a remaining portion of the connector is exposed. The adjacent pavement slab has an interconnection slot, that can cover the remaining portion of the exposed connector. The system further provides that under the condition that the pavement slab and the adjacent pavement slab are cut apart, the connector is cut into a first half and a second half, wherein the first half of the connector contains the first engagement component and the second half of the connector contains the second engagement component. The first half of the connector can be subsequently removed by engaging the engagement surface.

Abstract: A temporary roadway with a static resistant synthetic inter-connectable structural mats which connect without tools or fasteners having a top layer, a middle layer and a bottom layer. The static resistant synthetic inter-connectable structural mats can have static charge conduction conduit through the mat and the mats can be made from 100 percent recycled rust proof, non-absorbing materials.

Abstract: A pavement joint 101, 102 disposed between two contiguous pavement slabs 103, 104 and 105 incorporating a shear key (12, 13, 22 and 23) and at least one hinge (37, 38, 39 and 40). The shear key and the at least one hinge are operative when at least one of the slabs is subjected to out-of-plane action P with the shear key transferring shear between the slabs, and the at least one hinge accommodating angular displacement of the slabs relative to the joint axis in at least one direction. In one form, a joint member 10, 20, 40, 50 and 60 is disposed between the slabs to provide the shear key and hinge. A joint member and pavement slab for use in the joint is also described.

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 track system may include a plurality of connected slat members that may form rollable tracks. The rollable tracks may be used in moving vehicles across sensitive ground. The rollable track may be deployed using various methods and/or apparatus such as, e.g., deployment apparatus including one or more spool portions for rolling and unrolling the rollable tracks.

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: 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: A jointing structure comprising multiple steps provided face to face at the coaxially built traveling path ends with an expansion gap between, multiple elastic members respectively mounted inside the multiple steps, and a joint block mounted on the multiple elastic members across the expansion gap. Multiple supporting blocks and one or more than one intermediate joint block are mounted inside the multiple steps with the joint block between. The multiple supporting blocks, the joint block and the one or more than one intermediate joint block are of concrete. The elastic members are joined together across the expansion gap. The elastic member on one side is fixed to the inside of the step on one side and then subjected to deformation toward the bridge girder axis, and thereafter, the elastic member on the other side is fixed to the inside of the step on the other side.

Abstract: A cover plate system for a gap (15) between two structural members (10, 20) is provided. The system includes an elongated cover (30) that extends across the gap (15) from a first structural member (10) to a second, spaced-apart structural member (20). The cover plate system further includes damped spring anchors (40) for engaging the cover plate (30) to an underlying structural member (10) and dampers (50, 60) for absorbing energy imparted to the cover plate (30) by vehicular traffic. The cover plate system minimizes the strain energy that is absorbed by the cover plate (30), which results in less cover plate slapping and bouncing during operation.

Abstract: A longitudinal pavement joint for joining pavement lanes, the longitudinal pavement joint comprising: one or more joining surfaces having respective slope angles between about 0 and about 45 degrees; and optionally, one or more wall surfaces having respective slope angles between about 45 and about 90 degrees, the joining surfaces and the wall surfaces being disposed adjacent one another, and one or more of the joining surfaces comprising a respective joining surface feature.

Abstract: A connector comprising a guide tube, and a dowel, the guide tube being arranged to receive an end of the dowel, characterized by the end of the dowel passing through the guide tube into a fixing chamber via an orifice, 5 the fixing chamber being arranged to receive a fixing means, the fixing means being arranged to restrict the motion of the dowel within the guide tube.

Abstract: Procedures and devices for the formation of retraction joints in works of concrete. The devices are made of a separating material of concrete and their configuration comprises: a) A vertical wall (15, 15?) in its top portion that is planned to be placed underneath the surface fissure line of the retraction joint on the top face of the concreted surface; b) Two prismatic surfaces (17, 17? equal on their bottom part deployed on alternate sides with respect of said vertical wall and configured for the formation of entries and exits imbricated between adjacent slabs forming the faces of support (21, 21?) of one slab over the other at angles of between 0° and ?10° with respect of the horizontal plane. The procedures are based on the insertion of said devices in fresh concrete in the position planned for each retraction joint using mechanical means for this purpose.

Abstract: Making a water permeable traffic bearing system includes preparing a compound water permeable base in contact with a native substrate, and installing a drainage system having a plurality of elongate drainage joints over the prepared water permeable base. Each of the drainage joints defines a plurality of vertical drainage conduits opening at upper and lower sides and in fluid communication with a storage volume defined by the water permeable base. Making the water permeable traffic bearing system further includes forming a segmental mat having a plurality of water impermeable surface pads abutting the plurality of drainage joints, at least in part by filling voids extending horizontally between the drainage joints with a curable paving material, and curing the paving material within the voids, in contact with each of the water permeable base and the drainage joints.

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: The present invention provides a process for repairing concrete involving filling one of a void, gap or seam in the concrete with a polyurethane sealant containing a silane terminated prepolymer (“STP”), and a catalyst, optionally, one or more of plasticizers, fillers, pigments, drying agents, light stabilizers, antioxidants. thixotropic agents and bonding agents and applying an isocyanate-terminated prepolymer containing polyurethane or polyurea coating to the silane terminated prepolymer polyurethane sealant.

Abstract: A modular-type expansion joint system for bridging a gap that is located between spaced-apart structural members. The expansion joint system may be utilized, for example, in bridges, highways, and tunnel constructions where gaps are formed between spaced-apart, adjacent concrete sections. The expansion joint system includes vehicular load bearing members and support members. Seals are located between the vehicular load bearing members. The expansion joint system includes zones of differing movement capabilities in response to displacement events.

Abstract: This invention relates to a monolithic foundation (1) system with homopolymer/resist ant aggregate pavement with a semi-continuous configuration, which uses a pavement with load transfer elements (5) for the induction of joints. It is essentially characterized in that it comprises a foundation (1) having high-density expanded polystyrene blocks, which supports a semi -continuous cement concrete pavement, the pavement formwork being formed by the polystyrene blocks of the foundation. Each one of the load transfer plates (5) is comprised of two anchors (6) with two rebars (7) for alignment of a joint inductor (8), and a ball joint (9) which, at the load support moment, rotates anticlockwise and, at the support moment generated by the load transfer plates, performs a clockwise movement.

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.