Abstract: For joining together two concrete slabs (1, 2) juxtaposed side by side along a crack (3), a cylindrical cartridge with vertical axis is used comprising two half shells (4.sub.1, 4.sub.2) made from cast metal and joined vertically together by a key (11) housed in recesses (10.sub.1, 10.sub.2) each formed in a central projecting step (9.sub.1, 9.sub.2), these half shells being urged mutually horizontally apart by a continuous elastic belt (12) made from an elastomer material adapted to ensure sealed isolation of the inside of the cartridge with respect to the outside.

Abstract: In the case of a bridging arrangement for expansion joints in the carriageways of bridges or the like having a plurality of parallel plates (1-5) which are adjacent to the surface of the carriageway, run at right-angles to the direction of the carriageway and are supported on bars (6-10) which bridge the joint gap and are displaceably mounted in the edges (14, 15) of the joint, each plate is rigidly connected to two or more bars, but each bar is rigidly connected to not more than one plate. The spacings of the plates is controlled by means of elastomeric bearing members (19), the bars being supported by bearing members of that type that are on one or both of the plates and the two outer bars being supported likewise by bearing members of that type which are on the two edges (14, 15) of the joint, each on a different edge. This type of arrangement of the bearing member described results additionally in an especially even distribution of the vertical loads.

Abstract: An arrangement for bridging expansion joints in carriageways, especially bridges. One or more parallel plates run at right-angles to the direction of the carriageway adjacent at the top to the surface of the carriageway. The plates are supported at the bottom on bars which run at right-angles to the expansion joint and transmit loads directly or indirectly into the edges of the joint adjacent thereto. For controlling the spacing of the plates, control cables are provided. The plates are connected to the cable runs of the control cables. The cable runs run parallel to the bars and are attached either to the load-transmitting bars themselves or to separate control bars.

Abstract: A restraint assembly for bridge roadway expansion joints incorporates elastomer pads which resiliently mount a center channel of the expansion joint on a transverse support member thereby eliminating metal-to-metal contact and the production of objectionable noise.

Abstract: A pair of longitudinally extending cantilevered beam-type structural members are interconnected for the transmission of shearing forces between them. A part is secured to and projects longitudinally from the cantilevered end of one of the structural members into a horizontally displaceable bearing in the other. A reinforcing part is rigidly connected to one of the structural members and extends in the longitudinal direction of the structural member from its cantilevered end into and is supported by at least one longitudinally displaceable bearing in the other said structural member. The reinforcing part can be a single element or a pair of elements with one being a compression element and the other a tension element.

Abstract: A waterstop of elastic deformable rubbery material used in concrete structures with a substantially flat middle portion and enlarged side wing anchor sections with elastic or metal anchor strips and sponge material attached to the outer edge of the strips and injection tubes from outside the concrete to the sponge material. The method of installing a waterstop in concrete and after setting injecting a fluid curable or settable material to admit the fluid to the concrete matrix in the region of the sealing extensions.

Abstract: A dilation joint strip of rubber, synthetic rubber or other synthetic material having a substantially flat middle portion and side wings, said side wings being provided with anchorage means for anchoring said wings in concrete, the substantially flat middle portion being provided at either side with a strip of elastic cellular material extending in the longitudinal direction of said substantially flat middle portion.