Road pavement surfacing or repairing method and method of repairing road pavement with grooves
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Strengthening method of road pavement / 2365698 Invention relates to door-repair work and can be used at strengthening of road pavement of non-rigid type. Strengthening method of road pavement by method of cold regeneration, consisting in milling of existing coating, introduction into grinned material of additives, mixing of components, distribution and compaction of mixture and laying of trailing layer. Milling is implemented with providing of 3-5% dual-slope cross slope of bottom of regenerated layer by means of installation of ends of rotor for different depth of tillage. |
 Method for pavement hardening and waterproofing (versions) / 2347031Inventions concern the methods for hardening and waterproofing of the paved surfaces such as road and parking pavements. Application of the asphalt cutback layer onto the surface; application of a hardening mat over the surface, wherein the hardening mat has the first layer containing a nonwoven mat made of a mix of mineral and polymer fibers and the second mineral fiber layer attached to the first layer, and the asphalt cutback penetrates the hardening mat and impregnates it to create a waterproofing barrier, and the hardening mat is porous enough to allow the asphalt cutback to penetrate and impregnate it and absorbs at least about 0.32 l/m2 of asphalt cutback; and application of the pavement material over the hardening mat. Additionally described are versions of pavement hardening and waterproofing methods, and also a method for repairing a pavement with extended crack. |
 Road surfacing / 2332535Invention relates to the field of construction and can be used during the construction of road surfaces for motor roads, aerodromes and pavements. Road surfacing includes the base - the drainage layer, a layer of rubble from weakly-durable limestone, gravel and a layer coarse-grained asphalt concrete, on which is placed a coating from asphalt concrete with a layer of surface processing located on it from black crushed stone-choke stone with sizes up to 10 mm. As the asphalt concrete coating mixture, a bitumen-expanded clay composition with a thickness of 60 mm is used with the ratio of components, mass. %: road oil bitumen - 12.0-13.0, keramsite sand of fraction of 0.14-5.00 mm - 66.0-70.0, expanded clay is the rest. |
 Method of cold recovery for pavement clothing layer / 2331728Invention is attributed to road repair works and can be used for asphalt concrete recovery during repairing of pavement clothing for highways, municipal roads, pavements, areas, etc. Method of cold recovery for road clothing layers includes loosening of road clothing layers while adding necessary quantities of broken stone, sand, bonding substance and water and compaction of road clothing. As bonding substance, unhydrated lime carbonate is used. It is distributed onto old layer before recovery of road clothing layer while adding necessary quantities of broken stone and sand depending on grain size of road clothing layer being recovered, and water is added during recovery depending on humidity of road clothing layer being recovered and amount of bonding substance. Amount of substance and water and compaction of road clothing constitutes 2.5-3.0% of recovered road clothing layer mass. |
 Road paving construction method / 2318947Method involves laying combined crack-stopping layer on road base, wherein the crack-stopping layer comprises elastic membrane and reinforcing geo-mesh laid thereon; laying load-bearing layer formed of asphalt-concrete mix onto crack-stopping layer. Combined crack-stopping layer is arranged on previously prepared road base. Road base preparation involves dividing road bed into several components, for instance blocks or fragments; compacting the blocks or fragments and placing ground layer thereon. The elastic membrane is leveling asphalt-concrete mix including organic binding agent. Binding agent composition is selected from minimal ambient temperature of road building site. Reinforcing geo-mesh material is selected to provide high extension strength and low deformation ability. Several variants of road paving creation method are also disclosed. |
 Method for motor road and aerodrome base construction / 2317364Method involves in-situ preparing crushed-stone based mix; laying the mix on ground or drain layer in one or several layers; moistening the mix; impregnating thereof with emulsified asphalt and compacting the base. The crushed-stone based mix includes blast-furnace slag in amount of 30% by weight and steel slag in amount of 70% by weight or only blast-furnace slag. Before base compaction bitumen-mineral emulsion including liquid phase, namely potassium carbonates or sodium carbonates in amount of 1-10 l/m2 is added in slag-and-crushed-stone mix. The emulsion is poured over the mix and mixed thereto along with following mechanoactivation of obtained composition with medium-heavy and heavy road-rollers. Base is compacted with ramming road-roller. |
 Method for cracked paved surface repair / 2306380Method involves laying reinforcing mat over crack; fastening reinforcing mat to paved surface from one crack side by applying adhesive on reinforcing mat surface and on paved surface or only on paved surface in crack area; pressing reinforcing mat to paved surface or adhesive correspondingly; leaving unsecured mat as it is from opposite crack side; laying paving material onto reinforcing mat. Reinforcing mat is formed of non-woven web including mineral and polymeric fiber mix. |
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Method for reinforcement of road pavement / 2301292 Method involves providing hot regeneration process by heating top layer of existing asphalt-concrete pavement through 3-5 cm depth; mellowing said layer by cutting; introducing into ground heated material novel mixture of porous or high-porous asphalt-concrete in an amount needed for leveling and reinforcing; mixing said components; distributing mixture; applying thereon novel mixture for high-density or dense asphalt-concrete in 2-5 cm thick layer; providing joint compaction of both layers. |
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Method of reconditioning of road pavement layers / 2271415 Invention relates to road building and repairing and it can be used at repeated use of old asphalt-concrete coating. According to proposed method of reconditioning of layers of road pavement coming to loosening of layers by milling, delivering of binder and water into milled material, mixing of components and distributing and compacting the mixture, layer obtained after compacting is heated to depth of 3-5 cm and loosened to said depth after which mixture is distributed and compacted. |
 Indicator for determination of ice crust creation start and development dynamics / 2366775Indicator for determination of ice crust creation start and development dynamics is related to the field of safety of movement on road surfaces in wheel transport vehicles in winter time and low season period. "Indicator" comprises body, disk, drive, sliding roller, yoke, two coils, alarm device AC power supply source. |
 Method for cleaning of traffic strips from asphalt concrete carpets and device for its realisation / 2361034Invention is related to construction and operation of motor roads, namely, to devices for cleaning of traffic strips from asphalt concrete carpets. Method for removal of traffic strips includes the following actions: thermal effect, mechanical grinding and removal by means of brush with simultaneous supply of water and air onto rotary brush, separation and cleaning of air into facility for centrifugal cleaning of air. Device for removal of traffic strips comprises facility for thermal effect, facility for mechanical effect at remains of traffic strips, reservoir for water, reservoir for collection of traffic strip material remains, facility for centrifugal cleaning of air. |
 Device for measuring adhesion coefficient of car wheel with road surface / 2357038Present invention relates to the field of materials analysis by mechanical methods, and particularly to the device, which makes it possible to evaluate the adhesion coefficient of a car wheel with the road surface. The technical outcome is the simplification of the design, widening the possibility of carrying out work in laboratory conditions simultaneously by the methods of measuring the braking distance and deceleration and changes in the operating conditions in a wide range. The technical outcome is achieved due to the fact that the device is made in the form of a cart, which moves along a rubber path with uniform acceleration during the rolling of the central and balancer wheel under the action of the free falling load. |
 Device for measurement of transverse coefficient of wheel adhesion to road surface / 2351705Invention is related to construction, operation, maintenance and repair of works, road surfaces, aerodromes, namely to devices for control over condition of asphalt concrete surfaces of motor roads and aerodromes. Device for measurement of transverse coefficient of wheel adhesion to road surface comprises attached instrument with measuring system that consists of electric motor, the first reduction gear with drive gear, two powder clutches with gears having two excitation windings, control and registration unit, the second reduction gear with central gear, turn angle detector, metering wheel and yoke with axis installed in hinged joint. At that excitation windings of powder clutches and detector of turn angle are connected via control and registration unit, and metering wheel is connected to turn angle detector by means of yoke and hinged joint so that yoke might turn with metering wheel in horizontal plane relative to axis of automobile motion by skid angle α. The novelty is that metering wheel is equipped with braking system arranged in the form of electromagnet powder clutch, and control signal from control and registration unit is supplied to its winding, and detector of rotations number, signal from which arrives to control and registration unit of braking system. |
 Tool holder. / 2347907Invention refers to mining and building, particularly to machines with pulvimixer. A tool holder for a machine with the pulvimixer or such like has base (10) which bears holding added piece (30), also added piece (30) has receiving seat (31) of the cutting tool; and lug (15) is attached to base (10) before holding added piece (30) in the direction of tool holder feeding. Base (10) has connecting section (20) made in form of a chip breaker; the connecting section is formed on base (10) and passes at least partially through lug (15) starting from holding added piece (30). End section (34) of holding added piece (30) has intake seat (31) of the cutting tool made in form of an aperture. Also end section (34) has circular contact surface (33) passing around medium lengthwise axis of intake seat (31) of the cutting tool. Contact surface (33) which is located radially outside passes up to dimension boundaries of a cylinder region of end section (34). Connecting section (20) returning in the direction of the axis relative to contact surface (33) is connected with holding added piece (30). |
 Construction machine crushing drum, construction machine proper and crushing drum gearbox / 2345192In crushing drum (2) of a construction machine such as road crushing machine (1) or recirculating machine with replaceable crushing tube (4) arranged coaxially relative to axis (20) of the crushing drum inside the latter there being crushing drum fixed (4) supported by ring support (8) on holder (12) of ring support of rotating housing connected to drive (16) of the crushing drum the ring support (8) and holder (12) of the ring support of the rotating housing are represented by a array of additional support surfaces (22, 24) arranged coaxially relative to the axis (20) of the crushing drum with support surfaces (22, 24) having varied supporting circle diameters and arranged axially over each other with their diameters decreasing incrementally in the stretching direction. |
 Hydro-pneumatic hammering device / 2342530Invention refers to mining and road construction. The device consists of a case, a piston, a head, a cap connected with a working tool, an accumulating cavity, a cocking chamber, a drain pipeline and supply pipeline with a dynamic accumulator installed thereon. The device is equipped with a cover, an intermediary case rigidly connected to the latter and with a spool-type bushing installed in the intermediary case; the device is also equipped with a cap body forming the cocking chamber together with a head and a cover. The piston together with the case forms the accumulating cavity and contains a rod in a cylinder boring of which the head is installed creating the intermediary fluid chamber. A pin is rigidly connected to the rod of the piston; an axial slot is made in the cover, while in the spool-type bushing there are made an inclined groove, supplying and draining channels periodically communicating during spool-type bushing turning owing to travel of the rigidly connected to the piston rod pin in the axial slot of the cover and in the inclined slot of the spool-type bushing correspondingly and also connected with supply and drain pipeline wherein the dynamic accumulator is installed. |
 Apparatus for continuous evaluation of consistency of soil / 2341611Apparatus consists of cross bar with supports and vertical scale with bearing. |
 Method of road dressing recovery / 2341610Prior to cutting tool approaching to high-density sections, density of covering and base materials is preliminary defined. Then density is analyzed and tool is selected for damaging and working speed defining for the proper section. According to the invention machine is assumed in case inclusion into road dressing is impossible to damage. |
 Installation for testing strength of road pavement and foundation beds / 2338827Invention is related to the field of motor roads design, namely, to installations for version survey of strength of road pavement and foundations beds in road testing bench. Installation for testing strength of road pavement and foundation beds contains foundation channel with road pavement, hydraulic or mechanical jack with dynamometer, round hard stamp and indicators, thrust beam, which may travel along guides that are fixed to stands installed on side walls of channel and fastened with anchors. |
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Method of hot asphalt concrete mix granulation and method of mix application in asphalt concrete blanket repair in winter / 2367630 Method of hot asphalt concrete mix granulation involves stirring hot asphalt concrete mix in water at least at +90°C water temperature in the beginning of granulation process and at +30°C water temperature in the end of granulation process. Further cooling of granulated asphalt concrete mix is performed in air. Also invention claims method of granulated asphalt concrete mix application for asphalt concrete road blanket repair in winter. |
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Asphaltic concrete, containing mechanically activated rubber crumb / 2365553 Invention relates to automobile roads construction and can be applied for arrangement of upper layers of road dressings in all climatic zones. Asphaltic concrete includes crushed stone, sand, mineral powder, viscous oil bitumen and finely-milled rubber crumb. Finely-milled rubber crumb is contained in form of mixture of mechanically activated rubber crumb with fraction size from 0.071 mm to 0.100 mm and sand, obtained by combined processing in disintegrator at weight ratio 1:2. Component ratio in composition of asphaltic concrete constitutes, wt %: crushed stone 42-43, sand 35-36, mineral powder 12.8-13.2, viscous oil bitumen 5.5-6.0, said rubber crumb 1.0, said sand 2.0. |
FIELD: construction industry.
SUBSTANCE: invention refers to road construction industry and can be used during construction and repair of road pavements. Road pavement surfacing or repairing method involves levelling of the pavement till clearance level under a three-metre levelling board is not more than 3-5 mm, and laying thereon of protective and rough wearing coat. As protective and rough wearing coat, there used is dense asphalt mix containing the following, wt %: crushed stone obtained from hard-to-polish rocks with particle size of 3-10 mm or 5-15 mm - 65-70, sand of crushed hard-to-polish rock screening with particle size of up to 5 mm - 10-15, mineral limestone powder - 15-20, bitumen, above 100% of mineral part 5.5-6.5 with layer 15-25 mm thick, at the mixture temperature of 215-225°C, packing with vibratory beam of the asphalt laying machine at the speed of the latter of 1.0-2.0 m/min and pressing into the coating with the compactor. Method of repairing road pavement with grooves is described.
EFFECT: increasing service life of the road pavement, decreasing protective layer thickness at maintaining high operating characteristics.
3 cl
The invention relates to the field of road construction and can be used in the construction and repair of road surfaces to improve or restore their performance.
A known method of pavement from vibralite asphalt mix comprising preparing a mixture by mixing the crushed stone, sand, mineral powder and bitumen, laying it at a temperature of 190-210°C, vibroplate the paver, the subsequent vtaplivaniem in hot black surface gravel to form a protective and rough layer (see EN 2114953 C1, publ. 10.07.1998).
A known method of the road surface, which is as thin sherokhovatoi protective layer on the prepared road surface is placed at a temperature not lower than 180°With highly porous mixture containing crushed 75-85 wt.%, mineral powder 15-25 wt.% and bitumen of 5.0 to 6.5 wt.% in excess of 100% of the mineral, and condense Sladkovicovo rollers (see EN 2192401 C2, publ. 10.11.2002).
Also there is a method of repairing pavement defects, including the preparation of the road surface, which consists in removing the destroyed part of the cover, the removal of water and dirt, followed by priming and application of black rubble as a protective and rough layer. In the case of formation of ruts, the latter is milled the formation of troughs, fill them cast asphalt concrete mixture on a hot surface will distribute dry or black gravel (see Mesmeric-Bagdasarov and other Construction and repair of road asphalt coatings. Ed. "Constant", Belgorod, p.95-97, 103-106).
The objective of the invention is to increase the service life of the resulting layer, reducing its cost by reducing the thickness of the protective layer while maintaining a high performance coating.
The problem is solved in that in the method the device or repair of the road surface floor level to the level of clearance under the three-meter rail no more than 3-5 mm, put on protective and rough wear layer, which is used as a dense asphalt concrete mixture containing in%by weight: crushed trudnoponimaemyh rocks fractions 3-10 5-15 mm or mm - 65-70, sand from screening crushing trudnoponimaemyh rocks fractions up to 5 mm 10-15, limestone mineral powder - 15-20, bitumen in excess of 100% of the mineral 5,5-6,5 layer thickness of 15-25 mm, when the temperature of the mixture 215-225°C, compacted by vibroblades paver at a speed last of 1.0-2.0 m/min and pressed into the coating roller.
And before laying protective and rough wear layer coating the ground.
In addition, the method of repair of the road surface with ruts carry out the preparation of the coating by milling each gauge with the formation of the trough, educated trough filled cast asphalt mixture to cover, floor level to the level of clearance under the three-meter rail no more than 3-5 mm, ground, put on protective and rough wear layer, which is used as a dense asphalt concrete mixture containing in%by weight: crushed trudnoponimaemyh rocks fractions 3-10 5-15 mm or mm - 65-70, sand from screening crushing trudnoponimaemyh rocks fractions up to 5 mm 10-15, limestone mineral powder-15-20, bitumen in excess of 100% of the mineral 5,5-6,5 layer thickness of 15-25 mm, when the temperature of the mixture 215-225°C, compacted by vibroblades paver at a speed last of 1.0-2.0 m/min and pressed into the coating roller.
The invention is carried out as follows.
During the construction of the road surface is produced by laying asfaltobetonnoy mixture, compacted and leveled the floor to the level of clearance under the three-meter rail 4 mm To form a protective and rough layer is laid on thick asphalt mixture layer 15 mm when the temperature of the mixture of 215°C and compacted by vibroblades paver at a speed of 1.5 m/min. After which the layer is compacted and pressed into the coating roller. The thickness of the protective coating layer after compaction and pressing is 12-13 mm
When repairing the road surface with different what efektami, such as potholes and cracks, with cover removed the destroyed part, from dirt and moisture, level floor to the level of clearance under the three-meter rail 3 mm, ground, laid on thick asphalt mixture layer of 25 mm at a temperature of a mixture of 225°C and compacted by vibroblades paver at a speed of 1.5 m/min. After which the layer is compacted and pressed into the coating roller. The thickness of the protective coating layer after compaction and pressing is 20-22 mm
When the temperature 215-225°C, the mixture becomes viscous-plastic consistency, and in the process of laying and vibration compaction is undergoing a thixotropic dilution with plugging intergranular space of mortar part, forming a dense structure, the lower the cooling rate of the mixture and facilitates rapid heating and softening of the underlying layer and the effective rolling.
To eliminate ruts as the most common damage of asphalt concrete pavement each track are milled into the trough, to the level of the existing coating is poured cast asphalt concrete mixture, then all the floor level to the level of clearance under the three-meter rail 3 mm and then placed dense asphalt mixture layer 15 mm when the temperature of the mixture to 220°C and compacted by vibroblades paver at a speed of 2.0 m/m is N. Then the layer is compacted and pressed into the coating roller. The thickness of the protective coating 12-13 mm.
As a protective and rough wear layer using dense asfaltobetonnoy mixture containing the crushed trudnoponimaemyh rocks and sand from screening crushing trudnoponimaemyh rocks, such as granite, gabbro, diabase, basalt. Examples of formulations of asphalt mixtures is given in the table.
| Components, wt.%: | 1 | 2 | 3 | 4 |
| Macadam 3-10 | 65 | - | 70 | - |
| fraction 5-20 mm | - | 70 | - | 65 |
| The sand | 15 | 10 | 15 | 15 |
| Mineral powder | 20 | 20 | 15 | 20 |
| Bitumen over 100% | 6,5 | 5,5 | 5,5 | 6,5 |
Protective coating obtained from the inventive mixture by the present methods has a water saturation of 1.5 to 2.5 vol.%, the limit of compressive strength at 50°C 1.4 To 1.6 MPa. Reducing the cost of coverage as in the repair of old flooring, and new construction is achieved by reducing the thickness of the protective layer, with high performance, which leads to increased service life of the coating.
1. The way the device or repair of the road surface, characterized in that the floor level to the level of clearance under the three-meter rail no more than 3-5 mm, put on protective and rough wear layer, which is used as a dense asphalt concrete mixture containing, wt.%: crushed trudnoponimaemyh rocks fractions 3-10 5-15 mm or mm - 65-70, sand from screening crushing trudnoponimaemyh rocks fractions up to 5 mm 10-15, limestone mineral powder - 15-20, bitumen, in excess of 100% of the mineral - 5.5 to 6.5, with a layer thickness of 15-25 mm, when the temperature of the mixture 215-225°C, compacted by vibroblades paver at a speed last of 1.0-2.0 m/min and pressed into the coating roller.
2. The method according to claim 1, characterized in that before laying protective and rough of the wear layer of the floor ground is.
3. The method of repair of the road surface with ruts, characterized by the fact that carry out the preparation of the coating by milling each gauge with the formation of the trough formed by the troughs are filled cast asphalt mixture to cover, floor level to the level of clearance under the three-meter rail no more than 3-5 mm, ground, put on protective and rough wear layer, which is used as a dense asphalt concrete mixture containing, wt.%: crushed trudnoponimaemyh rocks fractions 3-10 5-15 mm or mm - 65-70, sand from screening crushing trudnoponimaemyh rocks fractions up to 5 mm 10-15, limestone mineral powder-15-20, bitumen, in excess of 100% of the mineral - 5.5 to 6.5, with a layer thickness of 15-25 mm, when the temperature of the mixture 215-225°C, compacted by vibroblades paver at a speed last of 1.0-2.0 m/min and pressed into the coating roller.