Abstract: The invention relates to supports for apparatus for transferring weight loads from one concrete structure to another. The devices are particularly suited for concrete highway construction. The support apparatus is used to position joint dowels that extend across paving joints between adjoining concrete slabs. The support apparatus comprises a first and a second support, each positioned on opposing sides of the paving joint. Each of the first and second supports comprise at least one longitudinally extending member having at least two cross members attached thereto such that one end of the cross member extends outwardly beyond the member. At least one clip comprising a body having a cavity therein, a gripper connected to the body and a cylindrical sleeve connected to the body is attached to each support. The clip is mounted to the end of a cross member so that the first end of the cross member is received into the cavity of the body and the attached gripper grasps the adjacent portion of the member.

Abstract: This invention relates to a grid structure (1) for reinforcement in road building, with crossing strands of warp and woof. The openings of the grid are traversed by longitudinal-laminar belts of textile material, leaving free passage openings.

Abstract: An athletic track having a post-tensioned concrete slab supporting a resilient surface. The athletic track has opposed, parallel rectangular side areas and opposed semi-circular end areas connecting the side areas. The concrete slab is cast in place without requiring expansion joints between segments. Cables are cast into the slab for providing a tension load in the concrete slab. A first set of cables is tilted away from the perpendicular in a first direction while a second set of cables is parallel to the edges of the rectangular areas such that members of the second set of cables cross members of the first set of cables. A third set of circumferential cables is provided in the semi-circular end areas. A fourth set of cables intersecting the circumferential cables is non-radially disposed. The slab has a relatively flat lower surface. Pour strips situated along a line of symmetry are provided between adjacent quadrants of the end areas.

Abstract: A method of constructing a temporary vehicle parking lot (10) on a land area (12) comprises the steps of: providing a composite drainage material (20) through which water drains; and covering the land area (12) with the composite drainage material (20) so that the land area is underneath the composite drainage material. The composite drainage material (20) comprises a polymeric open mesh core (22) between first and second layers (24 and 26) of a non-woven geo-textile fabric. One (24) of the first and second layers contacts the land area (12). The other (26) of the first and second layers faces away from the land area (12) and provides a surface (50) on which vehicles may be parked. The composite drainage material (20) directs water which contacts the other layer (26) through the first and second layers (24 and 26), through the polymeric core (22) between the layers, and into the land area (12) covered by the composite drainage material (20).

Abstract: The invention relates to metal wire mesh having a plurality of longitudinal wires and a plurality of transverse wires. The longitudinal wires of the mesh are provided with shaped areas wherein the moment of inertia of said shaped areas about the neutral axis parallel to the plane of the mesh is 90 percent or less of the moment of inertia of said shaped areas about the neutral axis vertical to the plane of the mesh. This substantially reduces the problem of curvature set when metal wire mesh is rolled for packaging or transport and attempts are made to unroll prior to use.

Abstract: A geocomposite system for increasing the service life of roads, bridges, or the like, includes a geocomposite layer having a geomembrane disposed between two geotextile backings, a structural layer for supporting the geocomposite layer, and a base layer formed on top of the geocomposite layer. The geomembrane is impermeable and the geotextile backings are sufficiently porous to provide a wicking action of moisture or liquid laterally along the geomembrane and out of the geocomposite system to prevent moisture or liquid damage. The geomembrane prevents the intrusion of liquids including deicing salts into the structural layers of roads, bridges, or the like abating deterioration in the structural layers such as corrosion of reinforcing steel. The geocomposite layer is bonded to and conforms to the structural layer, thus reducing reflective, shrinkage and fatigue cracking and increasing the structural capacity of the road or bridge.

Abstract: A structural reinforcement in the form of an open gridwork which is advantageously used, for example, as part of a shoe sole. The structural reinforcement provides and/or enhances spring-like characteristics of the member it is reinforcing, propels and encourages the natural foot strike of the user to length the user's stride, increases the stride speed, and stabilizes the user's foot to prevent permanent compression of the midsole as a result of creep. The gridwork is impregnated throughout with a fully cured or B-stage thermosettable resin. The gridwork includes at least one continuous filament selected from the group consisting of glass, carbon, and aramid. The open gridwork is flat, corrugated, or double corrugated. The corrugated gridwork may be sinusoidal. The open gridwork may be part of a shoe midsole or may constitute a shoe midsole.

Abstract: A concrete dowel placement apparatus for use with continuous pour concrete slabs comprising at least one slip tube, a concrete support dowel insertable into a respective slip tube and a wire mesh supporting structure. The slip tube comprises an elongate tubular sheath with a closed end, and an open end for slidable insertion of the concrete support dowel. Additionally, attached to an exterior surface of the sheath is a clip which is engagable to the wire mesh support structure. Therefore, the slip tube is attachable to the wire mesh structure such that the dowel is positionable within a continuous pour concrete slab at a prescribed location. The slip tube provides lateral movement of the dowel within the slab to thereby prevent fracturing of the slab in areas near sawcuts. The support structure may be formed from different configurations to facilitate positioning of the slip tubes and respective concrete support dowels supported therein.

Abstract: The invention relates to a reinforcing mat (1) for reinforcing a top layer of a ground, which top layer consists of bitumen, asphalt or a hydrocarbon-containing material of like nature, in which the reinforcing mat (1) is a mat woven with longitudinal wires (2, 3) and provided with reinforcement elements (4) running in the transverse direction of the mat, in which the reinforcement elements (4) consist of helically twisted steel profiled wires of essentially rectangular cross section.

Abstract: A concrete joint restraint system that is adapted for securing a dowel to first and second horizontal members that are spaced apart from one another and located at a desired height above a subgrade prior to placement of concrete. The system includes a closed clip including a cylinder with an end aperture for receiving one end of the dowel and a snap-on connection for connecting the open clip to the first horizontal member. The system further includes an open clip including a pair of flexible, arcuate side walls that define an elongated gap for receiving the other end of the dowel and a snap-on connection for coupling the closed clip to the second horizontal member. The system beneficially permits plastic, fiberglass reinforced plastic, or other non-metallic dowels to be supported between inexpensive rebar bolsters made of steel wire.

Abstract: A weldless grating comprising a plurality of longitudinally extending primary load-bearing members having an upper portion, a lower portion and a web located between the upper portion and the lower portion, the primary load-bearing member having a plurality of spaced-apart, generally rectangular-shaped openings in the web, the openings in each of the primary load-bearing members being aligned with the openings in adjacent primary load-bearing members. A plurality of secondary and tertiary load bearing members are provided.

Abstract: An automated weldless inter-locking grating assembly for bridge decks and the like which includes a plurality of primary load-bearing members located laterally, a plurality of transverse secondary load-bearing members and a plurality of trimorphic load-bearing members. Secondary load-bearing structural members are inserted sideways into apertures of primary load-bearing members and trimorphic load-bearing members. Thus, when a horizontal force is applied to alternate primary or trimorphic load-bearing members or any combination thereof, rotation of secondary load-bearing member or members occur to efficiently and automatically lock secondary load-bearing member or members into primary and trimorphic load-bearing member or members completing assemblage thereof into a rigid structural form.

Abstract: A bridge deck unit and a process for constructing a bridge deck using the unit, wherein deviation and deflection of reinforcements are prevented, and problems of complicated operation and high cost are solved. Connecting plates for connecting portions of main reinforcements are disposed at a predetermined distance from each other in a longitudinal direction of the main reinforcements such that upper and lower ends of the connecting plates are respectively secured to side surfaces of the main reinforcements.

Abstract: Disclosed is a non-loose hardware type traffic separating median barrier comprising having a male interlocking structure on one end and a female interlocking structure on the other end. In a preferred embodiment, the male interlocking structure comprises a "T" section extending from the end of the barrier and the female interlocking structure comprises a vertically extending steel tube with a slot in the external portion thereof. The "T" section of one barrier can be vertically engaged with the slot and tube section of an adjacent barrier so as to interlock the barriers together. In a preferred embodiment, reinforcing bars lock the interlocking structures into their respective barriers and, in a further preferred embodiment, reinforcing bar serves to interlock the male and female interlocking structures of a single barrier.

Abstract: A method of installing a patch in a pothole in a paved road including the steps of (1) undercutting the edges of the pavement defining the pothole to a uniform angle from the vertical; (2) excavating a portion of substratum beneath the pavement to undercut the pavement around the pothole, both undercuttings to increase the size of the patch's footing; (3) lining the undercut with a layer of filler material and tamping; (4) inserting an underlining wire mesh fitted to reach into the undercut beneath the pavement; (5) inserting and tamping additional filler material to an intermediate level of the pothole; (6) inserting a second wire mesh preferably fitted to the periphery of the pothole at the intermediate level; (7) around the periphery of the pothole spacing and anchoring a plurality support dowels into the undercut pavement edges at about the intermediate level; and (8) filling and tamping the pothole level with existing pavement surface.

Abstract: The reinforcing method of the invention comprises the steps of removing asphalt from a concrete slab 2 of a road bridge, placing a reinforcing fiber sheet 20 onto the upper surface of the slab, preparing a fiber-reinforced composite material by impregnation with a resin 13 and causing the resin to set, coating an adhesive 22 onto a reinforcing material 21 comprising the foregoing composite material, sprinkling sand 23 thereover to form irregularities of sand 23 on the upper surface of the reinforcing material 21, hardening the adhesive 22, then coating a solvent-based asphalt primer 24 onto the sand 23, and placing asphalt 7 again, thereby completing the reinforcing operation.

Abstract: A weldless grating comprising a plurality of longitudinally extending primary load-bearing members, a plurality of secondary load-bearing members, a plurality of tertiary load-bearing members, a first rod member extending through the lower part of the tertiary load-bearing members and through the primary load-bearing members for locking purposes, and a second rod member extending through the upper part of the tertiary load bearing members, the upper portion of the tertiary load bearing members and the second rod member designed to be encapsulated in a layer of concrete to anchor a wear layer of concrete to the weldless grating.

Abstract: A concrete crack control system is provided. The system comprises a vane or angle projecting from a wall, such as a pedestal or column or other wall surfaces against which a concrete floor or slab is poured. After the concrete has set to firm consistency, a saw cut is provided of a substantial depth in line with the projecting vane. The exposed saw cut may be filled with conventional filler, such as grout or the like. Any tendency of the floor to crack upon aging will be along the line of the vane and saw cut, thereby preventing crack damage to the floor.

Abstract: A structural member for reinforcement of asphalt and concrete roadways and other products, and which comprises a gridwork of warp strands and weft strands which are disposed at right angles to each other and so as to define an open structure. In one embodiment, the gridwork is impregnated with a thermosettable B-stage resin so as to interlock the strands at their crossover points and maintain the gridwork in a semi-flexible state, and after being applied to the product to be reinforced, the resin is heated to convert the same into a fully cured composite to thereby rigidize the gridwork and reinforce the product. In cases where the product to be reinforced is heated, such as asphalt paving, the heat of the product provides the heat necessary to fully cure the resin in situ. In another embodiment, the resin is fully cured to rigidize the gridwork prior to its being applied to the structure to be reinforced. A method of producing the resin impregnated gridwork is also disclosed.

Abstract: A method of repairing asphalt or concrete surfaces such as roads and parking lots which have developed pot holes therein. The hole is cleaned of loose debris, lined with a water barrier sheet, provided with a reinforcing mesh, and filled with hot asphalt mix. The asphalt mix is compacted by a roller which has been chilled by exposure to a cryogenic substance, such as liquid nitrogen. Alternatively, the cryogenic substance directly contacts the asphalt mix. Preferably, the reinforcing mesh is further reinforced by flattened rods woven through the mesh or alternatively, laid thereon, with the rods oriented at angles of approximately forty-five degrees to linear structural members of the mesh. The water barrier, reinforcing mesh, and reinforcing rods are preferably formed from recycled plastic materials.

Abstract: A lightweighted weldless grating comprising a plurality of substantially parallel, longitudinally extending primary load bearing members, a plurality of secondary load bearing members, and a pan member positioned between the primary load bearing members and supported on the flanges adapted to contain wet concrete, the pan member having a portion thereof extending upwardly against the lower edge of the secondary load bearing member to maintain the secondary load bearing members in web slots in the primary load bearing members, thereby forming the weldless grating.

Abstract: A weldless grating comprising primary, secondary tertiary members wherein top and bottom slots in the secondary load bearing member form a locking engagement with the web surrounding openings in the primary load bearing members, the secondary load bearing members having secondary downwardly extending slots through the upper edge, the slots having an upper portion extending downwardly from the upper edge and a lower portion located below the upper portion, the upper portion having a first extent and the lower portion having a second extent, the first extent being greater than the second extent.

Abstract: A weldless grating comprises a plurality of longitudinally extending primary load bearing members having an upper portion having an upper edge, a lower portion and a first web located between the upper portion and the lower portion, the primary load bearing member having a plurality of spaced-apart openings in the first web, the openings in each of the primary load bearing members being aligned with the openings in adjacent primary load bearing members, the openings having a top portion and a bottom portion, at least one of the top portion and the bottom portion having a protuberance extending from the first web into the opening, and a plurality of secondary load bearing members having an upper edge and a lower edge and a secondary web between the upper edge and lower edge, the secondary load bearing members provided with secondary slots in the secondary web.

Abstract: Geosynthetics and structures for earth reinforcement, stabilization and retention. Membranes used in such structures are formed by weaving a number of fill members, which are preferably fibrillated polypropylene members or strips, with a plurality of warp member sets, which are preferably formed of extruded polypropylene yarns. The woven membrane so formed sustains the moderate tensile loads imposed by earth reinforcement requirements in roadways, runways, and other ways. It is inexpensive because the materials are inexpensive and may be woven in a cost efficient way, and, if desired, in a way which allows the strength and tensile properties of the membrane to be varied for a custom application by varying the composition, number and disposition of the fill members and warp members.

Abstract: After sanding the upper surface 6 of a concrete slab 2, thermosetting resin 13 is poured onto the upper surface, and a unidirectional reinforcing fiber sheet is laid on the resin 13. The reinforcing fiber sheet is supported on the upper surface of the slab at the ends of the sheet by anchor pins 14 and maintained in a stretched state, to thereby impregnate the resin into the sheet and adhere the sheet to the upper surface of the slab. The resin-impregnated fiber sheet is then cured to reinforce the slab. The resin used has a viscosity of 5,000 cP or less at 20.degree. C., a thixotropic index of 3 or less at 20.degree. C., and a glass transition point of 60.degree. C. or greater after hardening.

Abstract: An exodermic deck for structural floors including bridge floors, road beds, pedestrian walkways, or the like, comprises a composite structure of a grid component and a top component. The grid component is preferably made of steel and includes a plurality of main bearing bars and a plurality of distribution bars oriented perpendicular to the main bearing bars. The top component is preferably made from reinforced concrete. The upper portions of either the main bearing bars or the distribution bars are embedded in the reinforced concrete component permitting horizontal shear transfer and creating a composite deck structure which maximizes the use of tensile strength of steel and the compressive strength of concrete. The top sections of the embedded bars have gripping surfaces for effecting mechanical locks between the grid component and the concrete component and increasing the horizontal shear transfer therebetween.

Abstract: A special reinforcement basket of steel rebar for reinforcing concrete barriers has toe regions of increased strength. Above the toe regions, there is a shoulder region where windows, or gaps, in the rebar provide for uninterrupted passage of holes in the concrete for anchor bolts, in order that the cast barrier may be anchored to a foundation. The invention is especially useful for precast concrete road barriers, which are manufacturered in a plant and then brought to a site and anchored in place.

Abstract: A weldless grating comprising: (a) a plurality of longitudinally extending primary load bearing members having an upper portion, a lower portion and a web located between said upper portion and said lower portion, the primary load bearing member having a plurality of spaced-apart openings in said web, the openings in each of said primary load bearing members being aligned with the openings in adjacent primary load bearing members; (b) a plurality of secondary load bearing members having an upper edge and a lower edge, the secondary load bearing members provided with first slots extending downwardly through the upper edge to provide top slots and with upwardly extending slots through the lower edge to provide bottom slots located substantially opposite said top slots, the secondary load bearing members positioned in the aligned openings in said web of the primary load bearing members, said top and bottom slots in said secondary load bearing member forming a locking engagement with said web surrounding said ope

Abstract: A weldless grating comprising: (a) a plurality of longitudinally extending primary load-bearing members having an upper portion, a lower portion and a web located between the upper portion and the lower portion, the primary load-bearing member having a plurality of spaced-apart openings in the web, the openings in each of the primary load-bearing members being aligned with the openings in adjacent primary load-bearing members; (b) a plurality of secondary load-bearing members having an upper edge and a lower edge, the secondary load-bearing members provided with first slots extending downwardly through the upper edge to provide top slots and with upwardly extending slots through the lower edge to provide bottom slots located substantially opposite the top slots, the secondary load-bearing members positioned in the aligned openings in the web of the primary load-bearing members, the top and bottom slots in the secondary load-bearing member forming a locking engagement with the web surrounding the openings in t

Abstract: In order to cut soft concrete before it has completely hardened, or about 12 to 18 hours after finishing, a rotating cutting blade and its drive motor are mounted on a wheeled support platform. The blade extends through a slot in the platform, and also through a skid plate depending from the platform, in order to cut the concrete below the skid plate. The slot and the skid plate are sized to support the concrete as it is being cut and to inhibit cracking and chipping of the concrete during cutting. The slot preferably has as little space as possible between the sides of the slot and the adjacent sides of the cutting blade. An extendable handle allows the device to be used beyond the physical reach of the operator.

Abstract: A method and apparatus for building bridges from one location to another, and in which the construction activity takes place primarily at such terminal locations. Forms are assembled at one of the locations, such forms establishing the characteristics of the bridge deck to be built. When the forms are completed, they are elevated and suspended upon cables passing between the two locations. The forms are then pulled from one location toward the other, sequentially engaging with previously built and positioned forms until an entire complement of such forms extends between the two locations. The forms are then filled with concrete and finished. The forms provide an exterior finished surface for the bridge structure.

Abstract: An internal metal stitching method for repairing cracks in concrete comprising the steps of cutting slots to facilitate large metal brackets installed every two feet and at alternating angles to the crack. Saw cuts are made in the concrete and near the ends of each large bracket to accommodate end brackets which when fitted resemble a double "t". The saw cuts are cleaned and dryed, filled with a filler resin, and the metal brackets are reinserted and are submerged 1/4 below the concrete surface. The filler is smoothed out to a level flush with the concrete surface. Additional decorative surfaces may then be applied, such as ceramic tiles, carpeting, linoleum or paint.

Abstract: A prefabricated roadway expansion joint/load transfer assembly (10) is provided which accommodates normal expansion and contraction between adjacent slabs (90a, 90b) while transferring vertical shear loads and minimizing stress cracking of the surrounding concrete (90). The assembly (10) includes a plurality of X-configuration bar units (12) including crossed, unconnected metallic bars (20, 22) whose ends (24, 30, 28, 26) are embedded within the adjacent slabs (90a, 90b). The bar ends (24, 30, 28, 26) are coupled within the corresponding slabs (90a, 90b) through use of respective U-shaped coupling assemblies (14) each having spaced legs (38, 40) and a bight (42), and vertical tie rods (44). The individual bar units (12) are joined by laterally extending connecting rods (56-70). A central spacer (18) is supported by the bar units (12) and supplementary spring supports (76) and extends the full width of the assembly (10).

Abstract: A rubber tire recycling process comprises the steps of granulating black rubber tire side walls and treads and granulating white rubber tire side walls to form coarse rubber crumbs, mixing the coarse rubber crumbs with fine clay particles to form a closely packed mixture, thoroughly wetting the surfaces of the coarse particles with a uncured EPDM rubber to provide a fluid, casting the fluid into a sheet-like configuration, and curing the sheet-like configuration under sufficient heat and for a sufficient time to provide an environmentally compatible paver for outdoor or indoor surfaces.

Abstract: A weldless grating comprising a plurality of longitudinal load bearing members, secondary load bearing members and/or tertiary load bearing members having a rod extending through the tertiary load bearing members and primary load bearing members locking the tertiary load bearing members in slots in the secondary load bearing members and locking the secondary load bearing members in slots in the primary load bearing members to form the grating.

Abstract: A prefabricated roadway expansion joint/load transfer assembly (10) is provided which accommodates normal expansion and contraction between adjacent slabs (90a, 90b) while transferring vertical shear loads and minimizing stress cracking of the surrounding concrete (90). The assembly (10) includes a plurality of X-configuration bar units (12) including crossed, unconnected metallic bars (20, 22) whose ends (24, 30, 28, 26) are embedded within the adjacent slabs (90a, 90b). The bar ends (24, 30, 28, 26) are coupled within the corresponding slabs (90a, 90b) through use of respective U-shaped coupling assemblies (14) each having spaced legs (38, 40) and a bight (42) and vertical tie rods (44). The individual bar units (12) are joined by laterally extending connecting rods (56-70). A central spacer (18) is supported by the bar units (12) and supplementary spring supports (76) and extends the full width of the assembly (10).

Abstract: A load supporting structure includes a pair of beams with tension members extending between them. A deck formed from fiber reinforced concrete is supported on the beams with fasteners extending between the beams and deck. The tension members provide sufficient rigidity to allow an arching action to develop within the deck and thereby avoid the need for steel reinforcements within the deck.

Abstract: A reinforcement for asphaltic pavings comprises a prefabricated resin impregnated, adhesive coated grid of continuous glass fibers. The grid is laid on top of an underlying paving and adhered to it. An asphaltic paving layer is then applied on top of the grid.

Abstract: According to a process for the manufacture of a framework (1) for reinforcing concrete structures and, in particular, concrete slab or shell structures in the form of a steel strip (3) with notched or goffered surfaces, a hot laminated sheet is used as a basis material having a width of between 1.5 and 6 mm, whereby said sheet is made of steel with a carbon content of less than 0.9%, and elastic limit of approximately 500 MPa. Said sheet is subjected to a cold lamination process at a strength-hardening level greater than 40% in order to obtain a sheet having, on the one hand, a thickness of between 0.8 and 2.5 mm, and on the other hand, an elastic limit greater than 700 MPa whereby the sheet is cut again so as to obtain a steel strip (3) which is then continuously notched or goffered. The application also concerns the framework obtained according to the process.

Abstract: A multidimensional structural reinforcing element is disclosed, the element designed for inclusion within a matrix of soil, concrete, stone, and other materials to improve the index properties of the matrix. The elements have a hub portion with arms extending radially therefrom. The arms may include additional structural elements such as cubes or spheres on the distal ends thereof and the surface of the elements may be roughened to increase the surface area and the gripping function of the elements relative to the matrix material.

Abstract: This invention relates to a pre-cast concrete traffic barrier element and a method of constructing a traffic barrier using the element on a vertical face of a retaining wall. The barrier element is a profiled reinforced block of concrete having a bottom surface with a longitudinally extending channel therein. The traffic barrier element is supported on the retaining wall with a top surface of the retaining wall being received within the channel. U-shaped anchoring bars project from an interior portion of the traffic barrier element and from the top surface of the retaining wall to form an oval keyway the length of the longitudinal channel. A locking bar arrangement is inserted through the keyway in a locking relationship with the U-shaped anchoring bars. Sealing material between the traffic barrier element and the retaining wall and between the traffic barrier element and the ground adjacent to the retaining wall on the traffic side prevents the leakage of grout and leveling of the barrier element.

Abstract: A reinforcement structur for asphalt pavements comprising corrugated or zig-zag bent perforated or open mesh strips disposed relative to each other so that when said strips are brought into contact with each other and fixed together at the apices the contacting strips define therebetween a plurality of cells or honeycomb-like structure. Further, there is provided a superior asphalt pavement when the above-described reinforcement structure is positioned and embedded within said pavement.

Abstract: A reinforcement structure for asphalt pavements comprising corrugated or zigzag bent perforated or open mesh strips disposed relative to each other so that when said strips are brought into contact with each other and fixed together at the apices the contacting strips define therebetween a plurality of cells or honeycomb-like structure. Further, there is provided a superior asphalt pavement when the above-described reinforcement structure is positioned and embedded within said pavement.

Abstract: An insulated trafficked surface having a first sheet of steel having corrugations, a second sheet of steel having corrugations attached perpendicular to and adjacent to the first sheet, a plurality of fasteners connecting the second sheet to the top of the first sheet, a heat insulating fill material filling the cavities of the corrugations of the first and second sheet, a covering layer of aggregate material formed on the top surface of the first and second sheets, and a surface layer of pavement formed over the top surface of the covering layer. The fasteners may be either rivets or screws. the aggregate material is a stabilized or unstabilized crushed aggregate. The surface layer is an asphalt pavement. The fill material is an expanded plastic.

Abstract: This invention relates to a pre-cast concrete traffic barrier element and a method of constructing a traffic barrier using the element on a vertical face of a retaining wall. The barrier element is a profiled reinforced block of concrete having a bottom surface with a longitudinally extending channel therein. The traffic barrier element is supported on the retaining wall with a top surface of the retaining wall being received within the channel. U-shaped anchoring bars project from an interior portion of the traffic barrier element and from the top surface of the retaining wall to form an oval keyway the length of the longitudinal channel. A locking bar arrangement is inserted through the keyway in a locking relationship with the U-shaped anchoring bars. Sealing material between the traffic barrier element and the retaining wall and between the traffic barrier element and the ground adjacent to the retaining wall on the traffic side prevents the leakage of grout and leveling of the barrier element.

Abstract: A reinforcement for asphaltic pavings comprises a prefabricated resin-impregnated, adhesive coated grid of continuous glass fibers. The grid is laid on top of an underlying paving and adhered to it. An asphaltic paving layer is then applied on top of the grid.

Abstract: A railroad railway for rail-mounted vehicles capable of high speed travel includes a track grating formed of rails and ties with the ties partially embedded in a poured-in-place steel reinforced concrete slab. The concrete slab is mounted on a continuous concrete substructure with a separating layer arranged between the slab and substructure. A single layer of steel reinforcement is located in the concrete slab spaced below the ties. The slab is dimensioned so that it serves only for plate-like stiffening of the track grating without any appreciable inherent bending resistance. The slab is secured against longitudinal and transverse displacement of the substructure, while the substructure is dimensioned to absorb bending moments developed in the longitudinal direction of the rails. The concrete slab is divided in the longitudinal direction by transversely extending expansion joints whereby sections of the slab can be replaced if damage occurs.

Abstract: An arrangement and method for laying concrete floors includes precast concrete, combination concrete-forming and screed-guiding beams. The beams are shaped to provide screed slide faces, anchorage flanges, and as desired, reinforcement bracket projections and dowel opening. The beams are located, leveled and anchored, in a spaced pattern of sections. Concrete reinforcements and dowels are used in the floor area to be laid, as desired. Concrete may be poured in all the sections defined by the beam pattern, and screeded, with the screeds being supported on the beams. The beams are not removed, but hardened into the floor with the poured concrete, eliminating such past, costly practices as temporary screed guide placement and removal, and the required work stoppage and overnight wait for some sections to harden, until adjacent sections can be poured.

Abstract: The present invention is directed to a weldless pavement module and a method for making a weldless pavement module. Each of the primary load bearing bars is formed with openings for receiving slotted secondary load bearing bars which are passed through the primary load bearing bars in a substantially horizontal position and which are rotated into a vertical position. The size and shape of the openings and the slots permit the combination of primary load bearing bars and secondary load bearing bars to be skewed to form a nonrectangular parallelogram configuration. Simple tack welds are used to temporarily hold the grating in its desired configuration. A concrete component encases at least the top surface of the grating base member and permanently secures the elements of the grating base member together. The use of tack welds eliminates the requirement that the grating base member be bent into a convex shape prior to welding. A simple flat jig is used.

Abstract: A pavement having one or more surface layers overlaying one or move base layers disposed on a subgrade with a rigid base layer interposed therebetween. The base layers are composed of paving material. The surface layers are composed of flexible paving material. The bearing member separates the surface layers from the base layers and has about the same longitudinal and transverse dimensions as the surface layers. The bearing member is composed of a substantially aggregate-free or aggregate free material. The bearing member is sufficiently rigid to at least generally prevent any surface layers from conforming, during the useful life of the base layers, to irregularities of the base layers and to move with the surface layers as a unit in response to movement of the base layers.