Abstract: The present invention relates to a sealing system provided with a self-expanding seal for sealing expansion joints in buildings, said seal consisting of a first body 11 and a second body 12 which are elongated and arranged opposite one another, connected by means of a waterproof flexible body 30 and by means of expanders 20 that produce an elastic thrust for separating said first and second bodies which are thus trapped inside the expansion joint to be sealed. Said seal includes retainers 40 which keep it in a pre-compressed position, allowing easy placement within the joint to be sealed, and which may be released producing the instantaneous expansion of the self-expanding seal.

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 system for transferring loads across a joint between cast-in-place slabs, more particularly at crossover point of a joint between cast-in-place slabs, includes at least one dowel plate and joint elements and includes elements or abutments for limiting the relative movements of the dowel plate towards the joint elements along three orthogonal directions.

Abstract: Disclosed herein is an anti-expansion joint bridge which eliminates an expansion joint structure from an upper structure thereof, and includes a plurality of slidable steel plates to cover a space between girders or floor slabs expanding and contracting on piers and asphalt concrete pavement on the steel plates, so that expansion and contraction of the girders occurring on the piers is prevented from affecting the pavement, thereby ensuring smooth travel of vehicles thereon. The anti-expansion joint bridge includes a pair of expandable/contractible girders separated from each other while constituting an upper structure of the bridge, a plurality of sliding plates overlapping each other on the girders while covering a gap between the girders, and an ascon part covering the pair of girders together with the sliding plates.

Abstract: A load plate sleeve assembly for maintaining a load plate in position between adjacent concrete slabs and facilitating controlled lateral movement of the load plate includes a housing and an insert clip coupled to the housing. The housing includes a top wall, a bottom wall, opposing side walls extending between the top and bottom walls, and an end wall extending between the top and bottom walls, and between the side walls. The walls define an internal cavity, and the housing includes a cavity access opening. The insert clip includes a opposing side walls having a first end and a second end. The insert clip also includes an end wall extending between the side walls, a plurality of deformable centering fingers extending from the side walls, and a collapsible diamond shaped center support extending from the end wall. The insert clip is positioned inside the internal cavity of the housing.

Abstract: A drainage system grate assembly for covering and allowing fluid passage into a watercourse includes: a crossbar having a plurality of spaced-apart upstanding knuckles defining a plurality of spaced-apart channels therebetween, each of the knuckles having a pin-receiving hole; a plurality of tread bars positioned in the channels between the knuckles of the crossbar, each tread bar having a pin-receiving hole axially aligned with the pin-receiving holes of the knuckles; and a pin positioned within pin-receiving holes in the knuckles and the tread bars, to secure the tread bars in the crossbar.

Abstract: A load plate sleeve assembly for maintaining a load plate in position between adjacent concrete slabs and facilitating controlled lateral movement of the load plate includes a housing and an insert clip coupled to the housing. The housing includes a top wall, a bottom wall, opposing side walls extending between the top and bottom walls, and an end wall extending between the top and bottom walls, and between the side walls. The walls define an internal cavity, and the housing includes a cavity access opening. The insert clip includes a opposing side walls having a first end and a second end. The insert clip also includes an end wall extending between the side walls, a plurality of deformable centering fingers extending from the side walls, and a collapsible diamond shaped center support extending from the end wall. The insert clip is positioned inside the internal cavity of the housing.

Abstract: A generally rectangular load plate for transferring loads between a first cast-in-place slab and a second cast-in-place slab separated by a joint. The load plate being adapted to transfer load between the first and second slabs directed essentially perpendicular to the intended upper surface of the first slab, and allowing relative movement between adjacent concrete slabs along the joint between the slabs with minimal joint opening between the slabs. A pocket former embedded within the first slab may also be included to position the load plate and create void space on the sides of the load plate to permit the relative movement. A compressible material along the side of the load plate may also be used to permit the relative movement. Neither the void space created by the pocket former nor the compressible material are dependent upon the existence of a significant gap in the joint between the concrete slabs.

Abstract: A dowel includes a corrosion-resistant sleeve, and a rod positioned within the sleeve. A sealant connects the corrosion-resistant sleeve and the rod. A method for constructing a dowel includes positioning a rod within a corrosion-resistant sleeve, and sealing the rod with respect to the corrosion-resistant sleeve.

Abstract: A disc dowel system is interposed between adjacent first and second concrete pours defining a pour joint therebetween. The disc dowel system comprises a pocket former having a rib insert disposable therewithin for engaging the sides of a dowel plate. The pocket former has a vertical base flange with a pair of fastener-receiving bosses for securing the pocket former to a concrete form. The pocket former has a horizontally extending interior compartment with an open straight side that is aligned with the pour joint and is positioned within the first pour. The dowel plate has an orthogonal shape with an embedded portion and a slidable portion. The embedded portion is rigidly encapsulated within the second pour. The slidable portion is slidably disposed within the pocket former such that the dowel plate permits relative horizontal movement of the first and second pours while restricting relative vertical movement thereof.

Abstract: A disc dowel system is interposed between adjacent first and second concrete pours defining a pour joint therebetween. The disc dowel system comprises a pocket former having a rib insert disposable therewithin for engaging the sides of a dowel plate. The pocket former has a vertical base flange with a pair of fastener-receiving bosses for securing the pocket former to a concrete form. The pocket former has a horizontally extending interior compartment with an open straight side that is aligned with the pour joint and is positioned within the first pour. The dowel plate has an orthogonal shape with an embedded portion and a slidable portion. The embedded portion is rigidly encapsulated within the second pour. The slidable portion is slidably disposed within the pocket former such that the dowel plate permits relative horizontal movement of the first and second pours while restricting relative vertical movement thereof.

Abstract: Disclosed is a disc dowel system interposed between adjacent first and second concrete pours defining a pour joint therebetween. The disc dowel system comprises a positioner bracket, a pocket former and a dowel plate. The positioner bracket has a vertically disposed base flange and a horizontally disposed plate portion extending therefrom. The base flange is rigidly attachable to a concrete form. The pocket former has a horizontally extending interior compartment with an open, generally straight side and an arch-shaped compartment perimeter extending therefrom. The straight side is aligned with the pour joint. The pocket former is positioned within the first pour by the positioner bracket. The dowel plate has a generally rounded shape with an embed portion and a slidable portion.

Abstract: A multi-seal waterproof expansion joint for roadways includes an L-shaped load-bearing member mounted to each end of adjacent roadway sections. The lower surface of the horizontal leg of each load-bearing member has a shaped end to receive an insert to provide a retention cavity accessible by an elongated groove. A primary seal has opposite sides captured in the cavities. Vertical leg of a support member is mounted to each of the load-bearing members. Horizontal legs of the support members are spaced from the horizontal leg of its respective load-bearing member to provide a pair of spaced chambers. A secondary seal has opposite sides captured in the chambers. Movement of the roadway sections due to temperature changes compresses and stretches the primary seal while the sides of the secondary seal slide in their respective chamber. The primary seal can be inserted and/or removed from above or below the roadway.

Abstract: A disc dowel system is interposed between adjacent first and second concrete pours defining a pour joint therebetween. The disc dowel system comprises a positioner bracket, a pocket former and an orthogonally shaped dowel plate. The positioner bracket has a vertically disposed base flange and a horizontally disposed plate portion extending therefrom. The base flange is rigidly attachable to a concrete form. The pocket former has a horizontally extending interior compartment with an open, generally straight side and a compartment perimeter. The straight side is aligned with the pour joint. The pocket former is positioned within the first pour by the positioner bracket. The dowel plate has an orthogonal shape with an embedded portion and a slidable portion.

Abstract: A disc dowel system is interposed between adjacent first and second concrete pours defining a pour joint therebetween. The disc dowel system comprises a positioner bracket, a pocket former and an orthogonally shaped dowel plate. The positioner bracket has a horizontal plate portion and a vertical base flange that is rigidly attachable to a concrete form. The pocket former has a horizontally extending interior compartment with an open straight side that is aligned with the pour joint. The pocket former is positioned within the first pour by the positioner bracket. The dowel plate has an orthogonal shape with an embedded portion and a slidable portion. The embedded portion is rigidly encapsulated within the second pour. The slidable portion is slidably disposed within the pocket former such that the dowel plate permits relative horizontal movement of the first and second pours while restricting relative vertical movement thereof.

Abstract: A device for making a connection between concrete slabs, the device having two modules derived from sheets, each module having a number of flat elements which form projections, each module further having elements in the form of a right angle, having a flat part integral with projection, and a raised part, and longitudinal members between the raised parts, and wherein the modules are assembled in such a way that the raised parts and longitudinal members of the two modules are facing each other along the two sides of a center plane, and that the projections extend on both sides of the center plane, so as to form meshing projections which pass from one side of the joint to the other.

Abstract: An expansion joint cover (10) comprises a first plate (18) hingedly attached to a first surface (14) of an expansion joint (12), a second plate (20) hingedly attached to the first plate (18), and a housing (26) fixedly secured to a second surface (16) of the expansion joint (12). During installation, a front plate (52) of the housing (26) can rotate about a hinge (58) to allow the second plate (20) to be installed within the housing (26). In use, the second plate (20) slides within the housing (26) to accommodate variations in separation distance and vertical offset between the two surfaces (14,16). Two hinges (36,44) accommodate variations in torsion between the two surfaces (14,16). The combination of the second plate (20) sliding within the housing (26) and the two hinges (36,44) accommodates variations in lateral offset between the two surfaces (14,16).

Abstract: Disclosed is a disc dowel system interposed between adjacent first and second concrete pours defining a pour joint therebetween. The disc dowel system comprises a positioner bracket, a pocket former and a dowel plate. The positioner bracket has a vertically disposed base flange and a horizontally disposed plate portion extending therefrom. The base flange is rigidly attachable to a concrete form. The pocket former has a horizontally extending interior compartment with an open, generally straight side and an arch-shaped compartment perimeter extending therefrom. The straight side is aligned with the pour joint. The pocket former is positioned within the first pour by the positioner bracket. The dowel plate has a generally rounded shape with an embedded portion and a slidable portion.

Abstract: An expansion joint cover (10) comprises a first plate (18) hingedly attached to a first surface (14) of an expansion joint (12), a second plate (20) hingedly attached to the first plate (18), and a housing (26) fixedly secured to a second surface (16) of the expansion joint (12). During installation, a front plate (52) of the housing (26) can rotate about a hinge (58) to allow the second plate (20) to be installed within the housing (26). In use, the second plate (20) slides within the housing (26) to accommodate variations in separation distance and vertical offset between the two surfaces (14,16). Two hinges (36,44) accommodate variations in torsion between the two surfaces (14,16). The combination of the second plate (20) sliding within the housing (26) and the two hinges (36,44) accommodates variations in lateral offset between the two surfaces (14,16).

Abstract: A vibration resistant expansion joint is provided. The expansion joint includes a sustaining pedestal (1) which is formed from two L-shaped members (111 and 112). A plurality of shim assemblies (12), each containing a bifurcated tooth-like shim (121), are pivotally joined to the sustaining pedestal (1). Additionally provided is a foundation (3) formed of two L-shaped side members, each side member having a slide surface (33, 34) formed along a bottom edge thereof. A stepped bench unit (2), formed of a pair of benches, is slidably mounted on foundation (3).

Abstract: The present invention is directed to an oral hygiene composition which comprises a 0.1 to 30% by weight of a bamboo-salt alone based on the total weight of the composition or a mixture of bamboo-salt and sodium chloride said mixture being in a mixed ratio of 1:5 to 1:15.

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: A highway pavement of concrete slab-on-grade surface includes a prestressed portland cement concrete surface layer which is mounted on a non-freezing low restraint support grade layer without any linear physical connection thereto in such a manner as to permit freedom of movement toward the midpoint of the surface layer. The surface layer is thereby able to slide in response to temperature and moisture changes in the environment including at temperatures below the freezing point of water. The surface layer has a riding surface of generally the same rideability five years after installation as it does at the time of installation.

Abstract: The present invention provides a bridging system which serves to bridge expansion gaps, used in the roadbeds of major structures such as bridges or viaducts. The supporting portion of the system comprises bearers, the upper sides of which are level with the surface of the roadway. The bearers rest on crosspieces that are supported in such a manner as to be able to move, within recesses below the roadway. The secondary gaps between the bearers are sealed by means of elastic rubber strips. In order that any contraction or expansion of the structure is distributed evenly across the secondary gaps, the crosspieces are controlled by means of connecting rods. The ends of these connecting rods are articulated onto opposing edges of the gap. In contrast to conventional systems of this kind in which connecting rods are disposed beneath the crosspieces, in the present system, connecting rods pass through the crosspieces.