Abstract: A saw apparatus for sawing paving slabs has a frame mounted on a ground contacting propulsion member such that the frame may move above a slab to be cut without touching the slab. A first saw support assembly disposes a blade of a saw in cutting engagement with the slab for a transverse cut. A second saw support assembly disposes a blade of another saw in cutting engagement with the slab for a longitudinal cut. The saws are mounted on the saw assemblies and the saw assemblies are mounted on the frame and the frame is mounted on the ground contact propulsion members such that no part of said frame need contact the slab during cutting.
Abstract: A method of laying a finishing layer with a road finisher F having a screed B, whereby the screed, equipped with a tamper device T and a smoothing plate, at least compacts and superficially smoothes the finishing layer, and the stroke and/or the frequency of the tamper device T are remotely varied for laying a finishing layer with a paving thickness and/or laying rate V which vary over the pave width and transversely to the working direction R within the pave width. A road finisher having a screed suitable for implementing the method set forth above wherein the road finisher or screed has an adjustment device for the remotely actuated local variation of at least the stroke of the tamper device within the pave width.
Abstract: A backer rod adapted for forming a fire-resistant seal within a construction joint. The backer rod may include an elongated tube defining a total assembly volume and a hollow interior, and a core disposed within the hollow interior. The tube is formed of a combustible foam plastic which disintegrates when exposed to fire. The core material is expandable when exposed to fire, such that the core has an intumescent expansion factor sufficient to expand to a volume beyond the total assembly volume. The backer rod may be press fit into a void between two surfaces to a depth. A sealant layer may be formed within the void. When exposed to fire on a side opposite the sealant layer, the external shell disintegrates, the core expands within the void in a direction away from the sealant layer, and a fire-resistant barrier is formed within the void between the surfaces.
Abstract: A frame for installing strips of expansion joint material in freshly-poured concrete has an elongated spine around which other elements of the frame are assembled. Spaced retainers are attached along a spine side. A flat side panel extends along another spine side. A space formed between panel and retainer receives a strip of expansion joint material. Notches are spaced along the bottom edge of side panel and serve as guides for spaced nails driven through the joint material. Spaced stakes are driven into the ground to hold the frame in place as concrete is poured around the frame. Handles are attached to the spine for removal of the frame after the concrete has been poured. The nails, immersed in the fresh concrete, hold the strip in place as the frame is lifted from the concrete and the strip remains in place within the concrete.
Abstract: A template for positioning a pocket former wherein the template positions the pocket former at a fixed depth with respect to the top of concrete formwork. The template comprises a support and a body. The support positions the template; the body comprises a positioner for locating a pocket former. A spacer that connects to the support according to the desired depth of the pocket former can also be included. The template thus provides a reliable and efficient way of ensuring that a pocket former is placed at the appropriate depth.
Abstract: A junction between successive flat pre-fabricated elements which comprises an elastic transverse insert (9), an approaching mechanism (10) in the form of tie beams (23) and tensioning mechanisms (19). The flat pre-fabricated elements (2) to be assembled each have a transverse channel (3) adapted so as to receive the insert along the end transverse edges (4, 5) thereof, which must face each other after assembly on the ground, and conduits (7) of the tie beams. Each pre-fabricated element is successively arranged, one after the other, and the transverse insert is introduced into the transverse housing (6) formed by transverse channels facing each other. The tie beams are introduced into the conduits, the ends thereof projecting outside the pre-fabricated elements. The tie beams are then tensioned by a tensioning mechanism, at each of the ends thereof, in order to immobilize the flat pre-fabricated elements and thereby connected by the tie beams.
Abstract: Disclosed are a concrete dowel placement devices and a method of utilizing the same. A metallic stud is driven, screwed, or otherwise attached to a form. The stud may be a unitary structure, or may be a hollow tube with conventional fastening means such as nails and screws extending through and holding the hollow tube to the form. A cover having an interior compartment substantially equal in diameter to the stud is slidably placed thereon, and a first enclosed area is developed with a plurality of forms. Concrete is poured into the first enclosed area, and upon curing, the form and the stud are removed, leaving the cover embedded in the concrete. A metallic dowel is inserted into the cover, and a second enclosed area is developed with like configured forms. The metallic dowel extends into the second enclosed area.
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: In order to repair a bridge in the zone of an expansion joint initially at least the near-surface components of the bridging device that is to be replaced are dismounted and the existing lane structure in the zones bordering the bridging device that is to be replaced is removed in the areas facing the abutment and the superstructure so as to form recesses placed at a lower level than the lane surface, whereupon a temporary bridging element located at the ground level is removably mounted. In order to entirely dismount one section of the bridging device that is to be replaced after another and perform preparatory work for assembling a new permanent bridging device, at least the bridging plate is repeatedly removed and re-assembled as required.
Abstract: Composite mixture materials made of recycled plastic, glass and rubber, and optionally, sand, gravel, coal combustion by-product and metal, and containing no petroleum distillates (unless a fire retardant or recycled asphalt pavement is used) are disclosed. Methods of using the composite mixture materials include making expansion joints in pavement, filling manhole cover recesses, filling potholes in pavement, making new pavements, and making panels, walls, blocks, impact protection walls, and other such structures. Methods of making the composite mixture materials include heating the components of the material in an inert gas environmentally friendly manner.
Assignee: Ace Tire & Parts, Inc.
Abstract: A tubing installation system and method having a length of flexible tubing, a handle having a first end and second end and at least one wheel rotatably mounted to the first end. The at least one wheel has a circumferential portion with a complimentary shape to at least a portion of the tubing and an axis of rotation substantially perpendicular to the handle. The circumferential portion is used to urge the tubing into a tubing recess.
Abstract: An apparatus and method of providing a retrofit dowel to maintain adjacent concrete structures in alignment. The dowel is received in a longitudinal groove cut across the structures, and supported in spaced relationship to the bottom of the groove by feet on caps engaged over the ends of the dowel. The feet are positioned so as to be disposed to either side of the dowel. Wings extending laterally of the end caps engage the sides of the groove to center the dowel within the groove and secure it in place. The end caps include structure to secure them from inadvertent displacement from the dowel and stops to provide expansion space to the ends of the dowel, and are translucent to enable the position of a dowel received therein to be visually observed.
Abstract: A roller compacted concrete paving sealing method which includes the steps of paving a first area with roller compacted concrete paving, paving a second area with roller compacted concrete paving adjacent to the first paved area, forming a cold joint between the first area and the second area, rolling the cold joint, allowing the rolled cold joint to cure, milling the cold joint and removing any milled material, applying primer to the milled cold joint, filling the milled joint with hot poured filler and finishing the filled joint. The method is done with asphalt paving equipment and specialty milling and hot poured filler equipment.
Abstract: Disclosed is a unitary resilient insert member for filing an expansion joint gap formed between adjacent concrete slabs, floor tiles, or the like wherein the insert member consisting essentially of a preassembled wedge shape form. Also disclosed is a method for sealing the gap located between adjacent flooring or structural members by filling the said gap with a sealing material insert.
Abstract: A system for sealing joints in roadways wherein nose plates are attached to each side of the joint to form a gap between the nose plates. A lower seal element is located in the gap between the nose plates. A vapor barrier is provided that extends between the top portions of the two nose plates. The vapor barrier includes edges that are attached to the tops of the nose plates utilizing anchor caps. An upper seal may be included that is located on top of the lower seal element. The upper seal is formed by applying a liquid sealant over the lower seal element and vapor barrier or by installing a preformed gasket that is anchored to the nose plates using the anchor caps.
Abstract: A method for the waterproofing of joints and/or cracks in the upstream face of dams, other hydraulic works and concrete or masonry structures. A waterproofing membrane includes a strip of elastically yielding synthetic material that is fastened to the surface to be protected along the whole joint and/or crack. Prior to positioning the waterproofing membrane, sliding elements are positioned onto the surface to support the membrane. A protection and sliding substrate is properly fastened independently from the waterproofing membrane so that the waterproofing membrane is allowed to freely elongate and follow the movements of the joint and/or the crack while maintaining a water tightening condition.
Assignee: Capri Tech Italia S.R.L.
Abstract: An elastomeric strand-shaped sealing profile including at least one continuous transverse beam located in a region between the base and rear side surfaces of the profile and having two sidewise projecting cantilever arms, two sealing lips provided on the respective lateral side surfaces of the profile adjacent to the regions of the corners between the base surface and the respective lateral side surfaces and extending sidewise of the base body, two webs extending from corners formed by the rear side surface and respective lateral side surface and toward each other, and forming, together with a rear side surface-forming web, a triangular structure, and a further web extending from a tip of the triangular structure and toward the base surface and forming with the two webs a Y-shaped structure.
Abstract: The joint is installed between two sections of roadway respectively supported by two contiguous structural elements. A driving surface is formed by a surface covering applied on top of the elements and interrupted above the gap separating them to form a trench. A closure member is placed in the base of the trench covering the gap, after which granulates and a binder which form a flexible material on curing are poured in. Before pouring in the granulates and binder, reinforcements are laid in the trench which are attached to the two structural elements at either end of the closure member. These reinforcements are perforated to allow the granulates to pass through. They therefore provide reinforcement for the joint in areas where there is a risk of tearing due to traction forces which tend to move the elements apart.
Abstract: A process is designed to finish all slits of the surface layer of an airplane runway. The process involves a first step in which a slit is heated such that the surface of the slit is dry, and that the capillary holes of the slit are opened up. The surface of the slit is then provided with a coating of an asphalt synthetic agent. The coating is subsequently heated to cause the molecules of the asphalt synthetic agent to diffuse into the capillary holes of the slit, thereby preventing the water from finding its way into the gradation layer of the runway. In the meantime, the slit is provided with a soft interface capable of preventing the water from finding its way into the slits of the surface layer of the runway. The soft interface is securely attached to the slits regardless of the climatic changes.
Abstract: A steel manhole is provided which includes a steel box having a hole having a bolt hole and formed at an upper portion of the same, a height control pipe having a vertical longitudinal hole inserted into an inner diameter portion of the hole, a multi-hole lid for covering an upper portion of the height control pipe, a male screw formed at left and right portions of the steel box and having a male screw portion, and a female screw having a thread portion for being threaded with the male screw pipe.
Abstract: The joint includes at least two profile elements having such a shape as to enable mutual engagement thereof as a male part and at least a female part, each being integral with one of the edges of two adjacent slabs. One edge of the slab is provided with a substantially L-shaped female profile, whose vertical stem extends all along the edge up to the sharp edge of the upper surface of the slab, and whose base stem extends towards the inner part of the slab and is downwardly folded to form a further stem, extending parallel to the base stem and forming a small space therebetween, for possible engagement of a part of the male profile.
Abstract: A joint insert is provided as well as a system and method for using same in the finishing of a surface's joint. The joint insert is a strip of material having a central longitudinal axis dividing the strip into first and second halves that are mirror-images about the central longitudinal axis. The strip is folded along the central longitudinal axis so that when the strip is positioned in the joint, the strip's central longitudinal axis and portions of the strip's first and second halves extend out of the joint. Gaps are formed between the joint and portions of the strip within the confines of the joint. A filler material is used to fill the gaps. As a final step in the finishing process, any of the strip and filler material extending above the plane of the surface over the joint is removed.
Abstract: A device for cutting filler material from concrete joints comprises a blate attached to the front of an elongated arm, the elongated arm is pivotably joined to a mounting plate. The elongated arm is limited in its movement by a retention bar located on a front edge of the mounting plate and a spring which biases the elongated arm toward the center of the mounting plate. An attachment lip is provided on the front edge of the mounting plate to assist in securing the mounting plate to a bucket of a power machine such as a front end loader. Bolts extending through the mounting plate and a rear turnbuckle also assist in securing the device to the bucket. Mounting is accomplished by placing the mounting plate in the bucket and hooking the lip around the front edge and under the bottom of the bucket. The rear turnbuckle includes a V-plate that engages the top rear of the bucket along the top rear edge.
Abstract: The Tile Holder, Spacer, and Setter; and Table is an apparatus used for tiling floors. The apparatus holds tiles, spaces them adjacent tiles, and sets them to a consistent depth. The apparatus allows the user to stand erect without putting stress on their knees and back throughout. The invention also includes a table that is to be used along with the apparatus. The table makes adding adhesive to floor tiles easier and cleaner.
Abstract: A method to produce an expansion joint for adjacent roadway slabs having an expansion gap therebetween. A recess is cut or formed into the surface of each adjacent roadway slab to create a pair of recesses parallel to and adjacent the expansion gap. The recesses are cleaned to a sound, dust-free and rust-free surface. A temporary form is inserted in the expansion gap between the adjacent roadway slabs. A mortar mixture of a slightly resilient polymer and aggregate is installed in each recess to form a pair of parallel nosings adjacent the expansion gap. High-strength filler blocks are encapsulated within the mortar mixture to reduce the volume of the mortar mixture and to thereby reduce the cost of the nosings. A temporary backing is inserted in the expansion gap between the nosings. An initially liquid sealant is installed between the nosings and on top of the temporary backing which will cure to form a flexible seal.
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: A hot-mix motorized paver is used to deliver fresh pervious pavement mix to form one or more lanes of pavement. The paver is supported on ski-type support runners on parallel side forms. A compacting roller is connected to the paver and rolls along the top of each side form to compact the fresh pavement down to the top of the forms. Indentations are cut into the fresh compacted pavement by rolling a hand powered roller, containing a pointed hoop, across the fresh pavement at select locations to form expansion joints. The pavement is covered with polyethylene sheeting within 20 minutes after completion of placement and finishing, the sheeting is removed after a curing time of approximately seven days, and a concrete saw is used to remove excess pervious pavement that extends beyond the desired paved area.
Abstract: A concrete dowel placement apparatus comprising a base member and an elongate, tubular dowel receiving sheath which is connectible to the base member. The base member comprises an outer sleeve having first and second ends and a flange portion which extends about the first end of the outer sleeve and defines front and back surfaces and a peripheral edge. The base member further comprises an inner sleeve which is disposed within the outer sleeve and defines an aperture extending longitudinally therethrough to the back surface of the flange portion. Extending between the inner and outer sleeves is at least one reinforcement wall. The sheath has an open proximal end, a closed distal end, and a hollow interior compartment extending longitudinally therein. The open proximal end of the sheath is extensible over the outer sleeve such that at least a portion of the outer sleeve resides within the interior compartment.
Abstract: The invention relates to a seal arrangement consisting of two abutting structures of concrete, steel, reinforced concrete, cast iron or other materials and a sealing section of elastomeric material which bridges and seals the gap between the two structures, in which the structures are especially segments assembled to form a tubular tunnel with the formation of transverse and longitudinal seams, where each segment preferably has at least one peripheral recess covering all the mating sides of the segments and there is in each recess a stranded sealing section which especially has strand-shaped grooves on the base side of the sealing section and/or strand-shaped channels, forming a sealing frame with corners, and the back of the sealing section has at least one strand-shaped groove to accept an emergency seal.
Abstract: A pavement repair structure and method of repair for forming a bond between vertical surfaces in asphalt pavement. The repair structure comprises a flexible, internal layer that is impregnated with an adhesive asphalt medium to define an elongated strip. An additive agent is incorporated in the asphalt medium to reduce the tackiness and lower the temperature sensitivity of the asphalt medium. A cut in the asphalt pavement caused by either a saw or a jack hammer is sealed by using the repair structure to form an extremely strong bond between the vertical cut edge of the pavement and the patch of new asphaltic concrete mix. The repair structure is also able to form a bond which is waterproof and will resist cracking due to extreme temperatures as a result of severe climatic conditions, the thermal expansion and contraction which the pavement will experience, and deflection of the pavement under traffic loading.
Abstract: A concrete dowel slab joint system is provided 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. It includes a sleeve assembly for receiving and maintaining the dowel bar therewithin. In this is way, the dowel bar does not transmit substantial shear stresses to the concrete during the contraction and expansion of the concrete. The sleeve assembly comprises an elongate sleeve body having an outer surface and an inner surface, and defines a hollow interior compartment, (b) at least one closed end, and (c) a sleeve member. Preferably, at least one collapsible spacer member is located within the hollow interior compartment. The spacer member is collapsible by interactive forces exerted by the dowel bar moving in a lateral and/or longitudinal path within the hollow interior compartment in response to the expansion and contraction of the concrete.
Abstract: A concrete dowel slab joint system 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. It includes a sleeve assembly for receiving and maintaining the dowel bar therewithin. In this is way, the dowel bar does not transmit substantial shear stresses to the concrete during the contraction and expansion of the concrete. The sleeve assembly comprises an elongate sleeve body having an outer surface and an inner surface, and defining a hollow interior compartment, (b) at least one closed end, and (c) at least one collapsible spacer member located within the hollow interior compartment. The collapsible spacer member engages and positions the dowel bar at a lateral distance from the inner surface of the elongate sleeve body and at a longitudinal distance from the closed end.