Abstract: A trenchless integrative repair method includes steps of: S1, pre-casting steel rings according to an internal diameter of a defect pipeline, and forming grouting holes in the steel rings; S2, loading the steel rings to a defect position inside the pipeline, and fitting the steel rings to an internal wall of the pipeline to form reinforcing rings; S3, selecting a number of the grouting holes according to subsidence distribution; drilling a hole in the pipeline to reach a subsidence position and inserting a grouting pipe; steadily grouting the subsidence position with a polymer grouting system, and observing a lift condition of the pipeline; removing the grouting pipe after the pipeline is lifted to a predetermined level; and S4, pulling a lining pipe into the pipeline, and fitting the lining pipe to the steel rings and pipeline walls adjacent to the steel rings; curing the lining pipe.

Abstract: A crack filling method includes forming a first drill hole in a concrete structure, with the first hole extending into a crack formed in the concrete structure. A test hole is additionally formed in spaced relation to the first drill hole. A baseline flow test is conducted by directing a test liquid into the test hole to determine a baseline flow characteristic. A filling substance is injected into the first drill hole and into the crack to at least partially fill the crack. Subsequently, a quality flow test may be conducted by directing the test liquid into the test hole to determine a quality flow characteristic following hardening of the filling substance in the crack. The quality flow characteristic may be compared to the baseline flow characteristic to determine an effectiveness of the crack filling.

Abstract: Methods, and apparatuses used in those methods, of countersinking injection tubing below the surface of a structure, such as pavement, so that injection tubing will not extend above the surface of the structure even after movement of the soil, for example, due to frost heave or shrink-swell. Some embodiments employ an injection tube extension and/or an injection tube advancer to countersink the injection tubing within the soil beneath a structure.

Abstract: A method for restoring a structure resting on settled soil, deep soil being consolidated, the structure having at least one crack resulting from the settling of the soil, in which a reinforcement substance is injected into the foundation soil of the structure in line with the crack in a primary drilling hole, the method comprising simultaneously with the injection, acquiring a curve revealing edges of the crack being brought together, stopping the injection as soon as an abrupt reduction in slope in absolute value is detected on the curve.

Abstract: A pavement slab assembly for a route for vehicles driving or standing on a surface of the route. The pavement slab assembly consists at least partially of pavement material and has a cable bearing element. Electric line or lines extend(s) along or under the surface of the pavement slab assembly. The cable bearing element is embedded in the pavement material of the pavement slab assembly and is arranged within the pavement slab assembly such that the cable bearing element is enclosed by the pavement material. The invention also relates to a method of building a pavement slab assembly, a route for vehicles, and a method for building a route for vehicles.

Abstract: A retractable, reflective pavement marker for delineating traffic lanes of roadways and a method of installing the same that provides improved protection from potentially damaging vehicle tires, snowplows, and environmental conditions. The marker incorporates a reflector assembly mounted to a piston that is depressible within a housing. A biasing means returns the reflector assembly to its normal position above the road surface. A compliant adhesive cooperates with an adhesive lock formed between the housing and the opening to ensure that the marker is reliably retained within the pavement. The adhesive and a chamfered opening prevent pavement spalling due to external forces. The housing includes a removable retainer through which the piston is reciprocally received. The retainer includes a plurality of coarsely pitched lead-in threads that cooperate with a threaded housing.

Abstract: An auxiliary member for pavement construction, including: a cylinder, a base plate and a leveling bolt; the cylinder includes a first cylinder part and a second cylinder part which are connected and communicated with each other, the first cylinder part is provided with a sling installing member and a slurry inlet, bottom of the second cylinder part is connected with the base plate, the base plate is provided with a bolt extending hole and multiple slurry discharging holes which are communicated with the inner cavity of the second cylinder part, the leveling bolt includes a bolt head and a screw, the screw extends through the bolt extending hole, the bolt head is arranged in the second cylinder part and the bolt head is smaller than the inner diameter of the second cylinder part. The present invention further provides a concrete slab and a method for pavement construction.

Abstract: A system and method for temporarily filling surface voids, such as cracks, potholes or other surface breaches includes a flexible container, such as a bag. The bag is filled with an engineered viscosity fluid. The fluid properties are chosen in accordance with a particular application in accordance factors including hole properties, anticipated traffic properties and ambient temperature. A bag with appropriate properties is placed in a void, and provides a temporary travel surface. Embodiments include fluids with engineered viscosity properties, including non-Newtonian fluids. Additional embodiments include selectively filled, selectively drained, or multiple bags. Another embodiment includes tubular, flexible containers cut to size in accordance with hole characteristics.

Abstract: A method of lifting a structure using one or more inflatable hoses is described. In one embodiment, a method of lifting a structure resting on the ground includes attaching a lift apparatus to the structure to the raised. An inflatable hose is introduced underneath the lift apparatus, with the inflatable hose being disposed between a bottom surface of the lift apparatus and the ground. The structure is then lifted by inflating the hose with pressurized media so that the hose increases in volume to impose an upward force on the lift apparatus which in turn lifts the structure.

Abstract: A product and method for repairing holes and cracks in roads, parking lots, sidewalks and other similar surfaces using a mixture of powder coating (i.e. dry paint) and a filler. The first step is to obtain the powder coating material. Any suitable powder coating material may be used, however, it is preferable to use the excess or waste powder coating material obtained from a powder coating operation. The next step is to mix the powder coating material with a filler, such as sand, pea gravel, or another suitable material. After the components are mixed together, it is applied to a surface needing repair such as a pothole in a road or a crack in a sidewalk. The mixture is cured by heating the mixture to the point where the powder coating melts and binds the powder coating with the filler and the surface needing repair. It may be cured before or after it is applied to the surface needing repair. After the mixture cures, the result is a high quality patched surface.

Abstract: A slab jack assembly for raising a fragmented slab from between sections of a concrete slab from which the fragmented slab is cut comprises a planar support positionable on top of the fragmented slab. Jacks are mounted on opposite sides of the planar support to engage an upper surface of the concrete slab. Securement pins mounted on the planar support are insertable into holes bored in the plurality of fragments in the fragmented slab and expandable within the holes to secure the fragments to the planar support. The first and second jacks are then operable to lift the planar support and fragments upward relative to the concrete slab.

Abstract: A slab jack assembly for raising a fragmented slab from between sections of a concrete slab from which the fragmented slab is cut comprises a planar support positionable on top of the fragmented slab. Jacks are mounted on opposite sides of the planar support to engage an upper surface of the concrete slab. Securement pins mounted on the planar support are insertable into holes bored in the plurality of fragments in the fragmented slab and expandable within the holes to secure the fragments to the planar support. The first and second jacks are then operable to lift the planar support and fragments upward relative to the concrete slab.

Abstract: A paving system includes a machine having a plurality of ground-engaging elements and a frame. The machine may be a paving machine having a receiver configured to receive electronic data indicative of a non-uniformity in a substrate within a region to be paved with a mat of paving material. The paving system further includes an electronic control unit configured to control compactor interaction with the mat of material according to a mat smoothness criterion, including controlling compactor interaction with the mat of material in response to data, such as screed control data, indicative of the non-uniformity in the substrate.

Abstract: A system for leveling a slab by raising and filling in voids under the slab. A mixture of compressed air and well dried sand is pumped through hose to a gun nozzle. The slab to be leveled is supplied with at least one hole for receiving the gun nozzle in a fluid tight connection. The compressed air is used to lift the slab while the sand is used to fill the void and keep the slab in a level position. The operator may supply successive burst of pressure to lift the slab as needed, while adjusting the air and sand flow. Finally, the gun nozzle is removed from the hole which is then patched thus, completing the repair of the damaged slab.

Abstract: A method of raising a slab is described here that uses inflatable hoses to raise slabs needing to be raised, for example, to raise sunken slabs of a roadway to align to their adjacent slabs without closing the roadway and breaking ongoing traffic. The described method of raising a slab makes it more efficient to repair slabs needing to be raised while conventional repairing methods, for example, re-pouring, or mud jacking, which need to close the roadway and interrupt ongoing traffic, are more expensive, time consuming and less effective.

Abstract: A pothole patching machine includes a container for storage of patch material, and a auger screw conveyor for conveying the patch material from the container to a ram. The ram is adapted to forcibly urge the patch material into a pothole. The ram is moveable between a retracted position and an extended position which completes one fill stroke. The ram also includes a foot plate dimensioned for positioning over the pothole and sensors for sensing when the pothole has been filled.

Abstract: A tube body having open upper and lower ends and a cylindrical bore there between has an opening along the length thereof. A driver is secured to the tube body adjacent to the upper end. A push rod has a free end. The free end is adapted to move downwardly to an advanced orientation adjacent to the lower end and upwardly to a retracted orientation above the opening. A control component with an operator controlled handle is adapted to move the ram. A funnel is secured to the tube body. The funnel is adapted to feed particulate material into the bore when in the retracted orientation and from the bore when in the advanced orientation.

Abstract: A method of repairing concrete slabs that have become uneven and dangerous is provided that employs lime sludge that is injected under pressure into the space between the lower surface of the damaged concrete slab and the underlying ground to raise that slab back into a level orientation. Once this has been accomplished, any remaining space below the slab is filled in with well dried sand blown in under pressure.

Abstract: A method of reconstructing existing roadway (21) on order to restore structural integrity of bridge roadway (23) with minimal disruption of traffic. First elevated roadway (41), which comprises a plurality of interconnected ramp units and bridging units, is erected in multiple steps by initially erecting an initial portion of roadway (41) from entrance/exit ramp units (45) and (46) with their uppermost ends facing each other. Then repeatedly, during periods of off-peak traffic, until roadway (41) is erected, performing a step of creating a gap in a previously erected portion of roadway (41) by moving ramp unit (45) along roadway (21), erecting a bridging unit in the gap, and opening an extended portion of roadway (41) to traffic prior to the next period of peak traffic. Structural integrity of roadway (23) is then restored by repeatedly closing a number of existing travel lanes to traffic, while rerouting traffic onto the newly erected roadway (41), and restoring the closed travel lanes without interruption.

Abstract: A pavement system utilizing a plurality of individual pavement segments. The elevation of the individual pavement segments can be adjusted by pumping a flowable material below the pavement segments through pre-formed ports in the pavement segments.

Abstract: Polyurethane forming compositions having a water insoluble, non-hydrocarbon diluent provide polyurethanes with improved properties. Polyurethane forming reaction mixtures having a water insoluble diluent provide compositions that permit the formation of polyurethanes in the presence of excess water. Polyurethane forming reaction mixtures having a water insoluble diluent provide compositions that permit the formation of water-blown, low-density polyurethanes in the presence of excess water. Polyurethane forming reaction mixtures having a water insoluble diluent provide compositions that permit the formation of water-blown, low-density polyurethanes. Polyurethane forming compositions having a water insoluble, non-hydrocarbon diluent provide polyurethane foams with improved dimensional stability properties. Polyurethane forming compositions having a water insoluble, non-hydrocarbon diluent provide polyurethane elastomers in the presence of water.

Abstract: A method of both hardening/densifying and polishing a concrete surface includes the steps of first applying to the concrete surface a silicate, siliconate, fluorosilicate, siloxane, silazane, silicon ester, and/or silane hardening/densifying compound, allowing the compound to remain in contact with the surface for a period of time sufficient to allow it to soak into the surface of the concrete, optionally allowing the surface to thoroughly dry, and polishing the surface with water or a diluted silicate, siliconate, fluorosilicate, siloxane, silazane, silicon ester, and/or silane polishing compound. The polishing step includes the steps of applying to the concrete surface water or the diluted polishing compound, mechanically polishing the concrete surface, cleaning the concrete surface, and repeating these steps with polishing pads or discs of increasingly finer grit until the surface obtains the desired level of shine.

Abstract: An apparatus for raising concrete members and maintaining the members in a raised position. The apparatus may be utilized for raising or leveling flat slabs such as sidewalk sections, driveways and patios or for raising sunken sections of curbs and gutters, and the apparatus includes a portable mud pump and mixing tank to provide grout or mud under the raised members for maintaining same in the raised position. A method for raising the members is carried out by attaching the sunken member to an apparatus including one or more lifting jacks, raising the member by the jacks, and at least partially filling the cavity under the member with a grout or mud. The portable mud pump, which includes a limit switch controlled double-acting air driven piston, is connected to a mud or grout mixing tank via a check valve and withdraws mud from the tank during an intake stroke and forces the mud, during a power or output stroke, into a cavity under a raised concrete member.

Abstract: A method of both hardening and polishing a concrete surface includes the steps of first applying to the concrete surface a hardening/densifying silicate compound, allowing the compound to remain in contact with the surface for a period of time sufficient to allow it to soak into the surface of the concrete, cleaning the surface and allowing it to dry, and polishing the surface with a diluted silicate polishing compound. The polishing step includes the steps of applying to the concrete surface a diluted silicate polishing compound, mechanically polishing the concrete surface with a rotary polishing machine, using pads or disks or drums, cleaning the concrete surface, and repeating said steps with polishing pads or disks of increasingly finer grit until the surface obtains an aesthetically desirable level of shine.

Abstract: A method and apparatus for raising concrete members and maintaining the members in a raised position. The method and apparatus may be utilized for raising or leveling flat slabs such as sidewalk sections, driveways and patios or for raising sunken sections of curbs and gutters, and the apparatus includes a portable mud pump to provide grout or mud under the raised members for maintaining same in the raised position. The method is carried out by attaching the sunken member to an apparatus including one or more lifting jacks, raising the member by the jacks, and at least partially filling the cavity under the member with a grout or mud. The portable mud pump, which includes a limit switch controlled double-acting air driven piston, is connected to a mud or grout supply (tank) having a check valve, and withdraws mud from the tank during an intake stroke and forces the mud, during a power or output stroke, into a cavity under a raised concrete member.

Abstract: The present application discloses a sidewalk lifting device made of steel framed tower that has a flat plate extending inward from the lowest end of the tower. This plate holds the lower surface of a sidewalk slab and also provides the lifting surface to elevate a damaged sidewalk. Additionally, attached to the inside surface of the tower in a position above the plate, is an adjustable slab brace frame which serves to hold the upper surface of a given sidewalk slab while it is being lifted.The lifting tower also has on its upper end outward extending frame members. When lifting a damaged sidewalk, multiple lifting devices may be used and supplied with hydraulic bottle jacks which fit on the outside edge of the lifting towers.A method of leveling sidewalks is also disclosed this method includes lifting a sidewalk slab to be leveled then injecting mason's sand into the cavity created between the lower surface of the sidewalk and the settled earth below it.

Abstract: Asphaltic concrete compounds comprised of asphalt cement and aggregate have, as a substantial portion of their respective aggregates, anthracite coal particles and fines, which are added specially as a lossy microwave material. These asphaltic concrete compounds are particularly useful when laid clown as a pavement, or a top layer of a pavement, which thereafter can be freed of ice, by using microwave energy to debond the ice. The debonding of the ice occurs without causing any noticeable melting of the ice, and the debonded ice is thereafter easily lifted and removed from the pavement of the way, serving as a roadway, highway, runway, or walkway. Also these asphaltic concrete compounds are particularly useful as patching materials when damaged pavement is being repaired, especially during cold weather.

Abstract: An improved method and composition for repairing cementitious surfaces is provided. A polymerizable urethane composition having an excess of isocyanate groups to account for water present in the reaction environment is utilized. The method utilizes water, e.g. surface moisture, to foam the polymer and provide a long-lived repair of the surface. The method is particularly applicable in the repair of concrete roadways.

Abstract: The method relates to levelling sunken or broken portions of earth-supported floors or slabs (2, 2A). At least one hole (1) is made in the floor, and polyurethane foam is sprayed between the floor and the underlying earth through this hole. The foam creates in the space a mould pressure, which raises the floor.

Abstract: A method is provided for repairing or preventing the faulting phenomenon in unreinforced concrete highways. Flowable, foamable, curable compositions are injected into the transverse joint between concrete slabs to fill any voids that exist between or under the slabs, and to fix loose incompressible "fines" which are forced beneath the slabs.

Abstract: Disclosed is a method of correcting the height level of a concrete foundation or the like which is supported on a loose soil material. The bearing capacity of the soil material has been locally increased under the foundation by means of an oblong casing which is open at its opposite ends and has been driven down into the ground in order to isolate with respect to lateral movements in the soil masses a predetermined soil volume from the surrounding soil. The correction of the height level is carried out by injecting a moveable material mass beneath the foundation in the isolated soil at such a pressure that the foundation is raised.