Abstract: Various implementations include methods and apparatuses for constructing a concrete structure. In one implementation, a structure includes a pre-cast concrete column section and a pre-cast concrete beam section. The column section includes an embedded first assembly with a threaded rod, and the beam section includes an embedded second assembly defining a channel for receiving the threaded rod. Grout is fed through a joint between the column and beam sections into the second assembly to couple the threaded rod with the second assembly. The grout is urged through the joint and the second assembly by gravity and by applying vacuum suction to a grout port defined by the second assembly. The grout port extends between the channel of the second assembly and an external face of the beam section.

Abstract: A dowel basket includes a metal frame with a plurality of non-metallic dowel bars having weld members secured to the dowel bars and welded to the metal frame. The dowel basket may provide wherein the weld members include weldable metal though pins extending through through-holes provided on opposed ends of each dowel bar and welded to loop wires of the metal frame, or weldable metal caps on opposed ends of each dowel bar welded to the metal frame, or weldable metal caps with at least one lug on opposed ends of each dowel bar welded to the metal frame. A method of forming a dowel basket including a metal frame with a plurality of non-metallic dowel bars comprises the steps of securing weld members to opposed ends of each of the dowel bars and welding each of the dowel bars to the metal frame via the weld members.

Abstract: An enamel coated steel dowel bar and a method of manufacturing said enamel coated steel dowel bar for use in joining together and stabilizing concrete slabs by drilling a first hole at a first end of an axis of the dowel bar, drilling a second hole at a second end of the axis of the dowel bar, configuring a first end plug into the first hole of the dowel bar, configuring a second end plug into the second hole of the dowel bar, attaching a first end cap over the first end plug and the first hole, and attaching a second end cap over the second end plug and the second hole, wherein a pin is removably attached to the first hole and the second hole to mount the dowel bar during an enamel coating process and wherein the dowel bar is slidably attached to the first end cap and the second end cap.

Abstract: The invention relates to a joint filling profile for forming a joint sealing between floor panels (3, 4), with a vertical leg (6) that projects into the joint (2) and a profile body (7) formed from a joint sealing compound (9) and situated in a joint enlargement (5), whereby the vertical leg (6) and the profile body (7) are separated from each other by intercalating a separating material (8).

Abstract: The joint comprises a pair (12, 14) of complementary engineering grade polymer injection moldings. Each molding is comprised of generally equal length oblique webs (15), set at 60° to a mid-plane (16) of the assembled joint, shorter, inner webs (17) and a longer, outer webs (18). Centrally of each outer web (18) is an aperture (21) and centrally of each inner web is a pin (22) with a step (23) and a pointed head (24). The heads of one molding clip into the apertures of the other while the steps determine their separation gap (25). The trapezium wave shape of the joint provides re-entrants (31) from the plane of the outer webs (18) towards that of the inner webs. Outwards of the re-entrants extend anchoring formations (33). Behind each re-entrant these formations are joined by a tab (34).

Abstract: A prefabricated paving slab includes specialized combinations of substantially vertical passages and cavities to enable “drop in” installation. The paving slab may include retractable coupling rods aligned using spacers having seating surfaces and alignment surfaces. Cavities of the paving slab, each configured for receiving a coupling rod, preferably are arranged in orientation(s) and pattern(s) selected for receiving and transferring the stresses of loads travelling in a pre-determined direction.

Abstract: A plurality of sleeve members for receiving and maintaining a dowel bar therewithin can be provided so that the dowel bar does not transmit substantial shear stresses to the concrete during the contraction and expansion of the concrete. The sleeve members can comprise (a) at least one hollow interior compartment for receiving and supporting said dowel bar, and (b) at least one aperture for receiving a bracket member. The dowel bar can have a tapered configuration and a pair of end sections. The dowel bar can be located within the hollow interior compartment for maintaining adjacent sections of concrete in alignment during contraction and expansion of the concrete, and for transferring shear stresses and bending moments across a joint formed between adjacent concrete slabs. The dowel bar can move in a lateral and/or longitudinal path within the hollow interior compartment and exerting interactive forces in response to the expansion and contraction of the concrete.

Abstract: An apparatus for combining adjacent concrete slabs including a dowel, an end cap, and a side frame. The end cap has a hood defining a curved channel extending at least partially around a dowel receiving end. The side frame has at least one wire received in the curved channel. Also, an end cap having an integrally formed supporting portion including first and second wire supports for supporting substantially parallel side frame cross wires. Also, an end cap including first and second sleeves positioned along opposing tangents of the outer peripheral surface of the end cap for receiving differing portions of a side frame, and further including a resilient protrusion for receiving a further differing portion of the side frame.

Abstract: An apparatus for combining adjacent concrete slabs including a dowel, an end cap, and a side frame. The end cap has a hood defining a curved channel extending at least partially around a dowel receiving end. The side frame has at least one wire received in the curved channel. Also, an end cap having an integrally formed supporting portion including first and second wire supports for supporting substantially parallel side frame cross wires. Also, an end cap including first and second sleeves positioned along opposing tangents of the outer peripheral surface of the end cap for receiving differing portions of a side frame, and further including a resilient protrusion for receiving a further differing portion of the side frame.

Abstract: A sleeve assembly system, a concrete dowel slab joint system, a method for maintaining adjacent sections of concrete in alignment during contraction and expansion of the concrete and for transferring shear stresses and bending moments across a joint formed between adjacent concrete slabs, and a concrete slab including a plurality of concrete dowel slab joint systems are provided. The concrete dowel slab joint system comprises the sleeve assembly for receiving and maintaining the dowel bar therewithin. The sleeve assembly is designed so that the dowel bar does not transmit substantial shear stresses to the concrete during the contraction and expansion of the concrete. A pair of bracket members, located on an underlying surface, support the sleeve assembly and the dowel bar above the underlying surface.

Abstract: A quick-connector for terminal fastening of a penetrating rebar (7) to a perpendicularly oriented concrete dowel (2), the connector comprising a wire clip (1) having a deflected segment of wire of the length (L) at least partially made of resilient-elastic metal, wherein the wire clip (1) includes, with respect to a primary turning arc (3), arms (5, 5′) that are mirror-symmetrical to an angle-bisecting plane (4), wherein each arm (5, 5′) forms a deflected secondary turning arc (6, 6′) transverse to the primary turning arc (3) and a clippable hook (8, 8′) that rests force-lockingly into a radial external surface zone (9), of a terminal radial expansion (1), of the concrete dowel (2).

Abstract: A highway coupling apparatus includes an expansion joint template, a plurality of rods, and a plurality of pipes. The template is positioned between longitudinal forms of a highway lane, creating two sections. After positioning the reinforcement bar in each section, the rods are extended through the expansion joint template and movably coupled to the pipes located in the second section. The highway coupling apparatus also includes a movement joint to couple adjacent lanes of the highway. The movement joint includes a plurality of eye bolts, L-bolts, movement joint templates, and a movement joint form. The eye bolts and L-bolts partially extend from the respective first and second lanes into the movement joint templates and are coupled. The movement joint templates are coupled to the movement joint form and prevent concrete from entering the eye bolt eyes during fabrication.

Abstract: In the construction of a concrete surface formed by a plurality of slabs, sleeves are inserted into a slab while the concrete is still plastic. The slab is allowed to harden. Dowel bars are then inserted into the sleeves to provide load distribution among the slabs. Advantageously, the dowel bars are inserted into a slab only when construction of adjacent slabs is ready to proceed.

Abstract: The arrangement for covering over a gap in a roadway has bars running across the roadway. The bars are supported by transverse beams spanning the gap obliquely and which are supported at their ends in joint gap edge structures in such a way that the ends of the beams are able to slide and swivel in relation to the edge structures. The bars are carried on the beams by friction-reducing bearing parts so that sliding of the bars is possible. The bars have openings through the structure thereof (as for example holes in the bar itself or in a frame fixed thereto) to take up the beams and the bearing parts are adapted to allow sliding without swiveling between each bearing part and the associated beam and to allow swiveling between the bearing part and a bar joined thereto. The bearings are made of elastically yielding material and each have at least one bearing body.

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.