36results about How to "Strong anti-rutting ability" patented technology

A method for matching asphalt mixture suitable for different asphalt road is provided which comprises of steps of: (1) aggregate test; (2) choosing of design aggregate; (3) choosing of dosage of asphalt; (4) Marshall test; (5) high temperature stability test of asphalt mixture at best oil amount; (6) water stability test of asphalt mixture at best oil amount; (7) low temperature bending test of small beam of asphalt mixture at best oil amount. The advantages of the present invention lies in: (1) can obtain high resistance friction to resist track and limit slightness granules to make the aggregate not easy to crash in the build process and traffic, and limit clay content and enhance bond force of aggregate and asphalt; (2) the structure of mixture is reasonable; (3) analysis process of asphalt volume is nicer; (4) asphalt road surface has high anti-track capability, at the same time has higher consistency of vibratory compaction; (5) the mixture prepared by the present invention has merits of less largest dimension granule diameter coarse aggregate and fine aggregate, and more medium aggregate, so the uniformity is good, and easy to press, and the mixture is tends to interlocked-denseness and the framework is good.

The invention relates to a multicomponent system for improving the modulus of asphalt mixture, and an application method and modified asphalt thereof, wherein the multicomponent system comprises the following active ingredients in parts by weight: 1-2 parts of calcium sulfate, 1-2 parts of animal and plant oil, and 5-7 parts of waste tire rubber powder. The application method comprises the following steps: taking a part of animal and plant oil in a closed tank, covering the waste tire rubber powder on the surface of animal and plant oil, sealing a test tank, and closely heating at 100-140DEG C; infiltrating the calcium sulfate whiskers with the remaining animal and plant oil, and stirring to be evenly mixed; transferring the mixture in the test tank into hot asphalt which is at 130-140DEG C, continuously stirring for 40-90min, removing a heat source, continuously stirring until the temperature is reduced to 110-120DEG C, adding the mixture of calcium sulfate whiskers and animal and plant oil, and continuously stirring until the temperature is reduced to 95-100DEG C. The modified asphalt has multiple characteristics of being high in strength, strong in track resistance capability, good in low-temperature flexibility and asphalt compatibility, economic and environmentally friendly and the like.

The invention discloses SBS modified emulsified asphalt based on high solid content SBS emulsion. The SBS modified emulsified asphalt based on the high solid content SBS emulsion is prepared from thefollowing components in parts by weight: 55 to 60 parts of matrix asphalt, 5 to 7 parts of high solid content SBS emulsion, 40 to 45 parts of water and 2 to 3 parts of an emulsifying agent. Accordingto the SBS modified emulsified asphalt based on the high solid content SBS emulsion, cyclohexane which is environmentally friendly and can enhance the stability of a system is selected as a solvent for dissolving SBS; a compound emulsifier with high surfactivity is preferred, so that the obtained SBS emulsion is high in stability and high in solid content; the modified emulsified asphalt is prepared by utilizing the SBS emulsion, and the characteristics of high solid content of evaporation residue, high softening point and the like can be shown; the obtained modified emulsified asphalt is applied to preventive maintenance of a road, and the advantages of high toughness and elasticity, low noise, strong rutting resistance and the like can be shown; therefore, the SBS modified emulsified asphalt based on the high solid content SBS emulsion is suitable to be popularized and applied.

The invention discloses an easy compact asphalt mixing material and temperature and time control parameters in the preparation process of the easy compact asphalt mixing material. The easy compact asphalt mixing material comprises 100 parts of ore materials, 5.8 to 6.4 parts of modified asphalt, 0.2 to 0.3 parts of polyester fibers and 0.3 parts of easy compact agents, wherein the ore materials comprise the following ingredients in weight proportioning: 50 percent to 60 percent of 8-11mm macadam, 10 percent to 15 percent of 5-8mm macadam, 25 percent to 35 percent of manufactured sand and 3 percent to 8 percent of limestone ore powder. The ore materials are heated to 150 DEG C to 160 DEG C and is then subjected to dry stirring with polyester fibers for 5 to 10s, the modified asphalt is heated to 165 DEG C to 175 DEG C, the easy compact agents start to be sprayed after the modified asphalt is sprayed for 3s, the total time for spraying the asphalt and the easy compact agents is controlled to be within 13s, the ore powder is added after the wet stirring for 6s, the total time of the stirring and the mixing is not lower than 60s, the cylinder discharge temperature is controlled to 135 to 155 DEG C, and the easy compact asphalt mixing material is obtained. The mixing material is easy to compact, the rutting resistance capability is high, the construction temperature is reduced to 30 to 50 DEG C, heating energy sources are saved by about 22 percent, the emission of asphalt smoke and greenhouse gas such as CO2 is reduced, the effects of energy saving, emission reduction and environment protection are obvious, meanwhile, the construction quality is improved, the effective construction time is prolonged, and the work period is shortened.

This invention relates to a bitulith composed with dredge mud ceramicite, and its production method. The raw materials of this inventive product are: asphalt, ballast, dredge mud ceramicite, sands and fillings. The production method comprises procedures of: preheating the dredge mud ceramicite, mixing with various kinds of raw materials in proportion in blending equipment, then mixing them evenly, loading the same into paver and then spreading, rolling. This invention solves the problems of the consumption of non-regeneration resources in prior art method with advantages of: low cost, resources-saving, environmental-protection.

The invention discloses a self-luminous road pavement structure and a construction method thereof. The self-luminous road pavement structure comprises a water sealing layer, a water guiding layer, a permeable layer and a self-luminous surface layer, the water sealing layer, the water guiding layer, the permeable layer and the self-luminous surface layer are arranged from the bottom up in a layer-by-layer mode, the self-luminous surface layer is filled with artificial luminescent stone particles, road water removing can be accelerated through the structure, and the phenomena of instability of clearance and gravel embedded into a soil matrix are eliminated; and the construction method comprises the following steps that (1) the water sealing layer is poured; (2) the water guiding layer is paved; (3) the permeable layer is poured; and (4) the self-luminous surface layer is poured. According to the self-luminous road pavement structure and the construction method thereof, construction is convenient, universality of the technology is high, and cost engineering is saved.

The invention relates to a high-modulus asphalt additive, prepared from, by weight, 1-10 parts of SBS (styrene butadiene styrene), 20-40 parts of waste PP (polypropylene), 20-40 parts of waste PE (polyethylene), 10-30 parts of waste rubber powder, 1-5 parts of glass fiber, 4-8 parts of a compatibilizer, and 1-3 parts of an aid. The compatibilizer is a mixture of maleic acid grafted SBS, maleic acid grafted polypropylene and maleic acid grafted polyethylene. The additive containing various waste polymer ingredients is low in cost and effective for asphalt modification, may be used to modify asphalt to produce high-modulus asphalt, is high in anti-rutting capacity, and is applicable to high-grade highway pavements.

The invention discloses modified asphalt for pouring asphalt concrete and a preparation method thereof. The modified asphalt is prepared from substrate asphalt, a modifier viscosity promoter, furfuralextraction oil and a stabilizer. The pouring asphalt concrete provided by the application has the advantages of higher softening point, higher hardness, high elastic recovery and thermal aging performance and very high thermal storage stability. By adopting the high-performance high-viscosity asphalt provided by the invention, the high-temperature performance of the pouring modified asphalt concrete can be enhanced, the pouring modified asphalt concrete has high strength and stiffness moduli in a high-temperature state, the rut resistance is enhanced, the stress state of the whole pavement structure is improved, and the service life of a pouring asphalt concrete pavement is prolonged.

The invention relates to a graded broken stone filling type semi-flexible composite pavement mixture, which comprises the following components in parts by mass: 100 parts of graded broken stone; 4-6 parts of water and 6-10 parts of a grouting material. The grouting material comprises cement, water-based acrylic resin, a volcanic ash material and water. The grouting material is poured into the graded broken stone. The semi-flexible composite pavement mixture can be constructed at normal temperature, thus effectively solving the rutting problem of asphalt pavements and improving the durability of the pavements. The environmental pollution caused by hot mix construction of a filled semi-flexible pavement can be reduced. The construction efficiency of a filled composite pavement is improved, and the production cost is reduced.

The invention relates to the technical field of reclaimed asphalt, and discloses a method for finely sorting and reusing road milling asphalt waste materials. The method specifically comprises the following steps that S1, a cold milling machine is adopted for milling asphalt pavement with serious cracks, ruts, pit grooves and looseness, and the milling asphalt waste materials are collected and screened; and S2, the asphalt waste materials are divided into 10-20 mm of coarse-grade asphalt and 0-10 mm of fine-grade asphalt by adopting an 11 mm sieve, the two-grade asphalt wastes are correspondingly subjected to combustion and performance detection, and meanwhile, the physical indexes in the asphalt waste materials are detected. According to the method, the road milling asphalt waste materials are finely sorted and reused, various physical indexes of new synthetic asphalt are not greatly changed by virtue of a series of test data, the anti-rutting capacity of regenerated asphalt mixture is gradually enhanced along with the increase of the mixing amount of the asphalt waste materials, and the water stability of the mixture is better along with the reduction of the mixing amount of theasphalt waste materials in the regenerated asphalt mixture.

The invention discloses a heavy-load type durable asphalt composite structure applicable to a 'changing white to black' project. The layered composite structure is arranged on an original pavement layer and comprises an upper surface layer, a second bonding layer, an intermediate layer, a first bonding layer, a lower surface layer and a stress absorption layer in sequence from top to bottom; the stress absorption layer is arranged on the upper surface of the original pavement layer. According to the heavy-load type durable asphalt composite structure, the upper surface layer made of rubber asphalt SMA13, the intermediate layer and the lower surface layer made of high-modulus EME are all capable of bear load well, and excellent track resistance is achieved; meanwhile, compared with a common asphalt mixture, the position of the upper surface layer, the position of the intermediate layer and the position of the lower surface layer are all high in stiffness modulus which is closer to the modulus of a cement concrete pavement, so that the entire deformation coordination capacity is unified, and it is helpful to prolong the entire structural service life of the pavement.

The invention relates to a composite road surface intensifier and a production method thereof. The composite road surface intensifier comprises the following components in part by weight: 29 to 34 parts of PE, 10 to 16 parts of rock asphalt, 13 to 21 parts of rubber powder, 2 to 4 parts of diatomite, 4 to 8 parts of silicon dioxide and 27 to 37 parts of protolignin. The production method comprises the following steps of: mixing and pulverizing the granular PE and the rubber powder into a dualistic mixture, wherein the temperature is lower than 60 DEG C; fully mixing the dualistic mixture, the rock asphalt, the diatomite, the silicon dioxide and the protolignin to form a multiplex mixture; and extruding the multiplex mixture into irregular particles with particle diameter of between 3 and 6 mm by using a plastic particle machine, wherein the temperature is lower than 120 DEG C during extrusion. The composite road surface intensifier has the advantages that: the asphalt mixture on the SMA road surface has simple field production and operation, namely a granular formulation is thrown into a mixture stirrer, so that the performance of the original SMA mixture is kept, and the anti-tracking capacity is stronger and the cost is lower.

The invention discloses a high-temperature-resistant anti-rutting asphalt mixture and a preparation method thereof. The asphalt mixture is prepared from, by weight, 15-18 parts of pretreated asphalt,30-35 parts of zinc chloride, 5-10 parts of a heat conduction material, 8-12 parts of glass fibers, 5-10 parts of an admixture and 90-100 parts of an aggregate. The pretreated asphalt is prepared fromthe following raw materials by weight: 8 to 14 parts of modified asphalt, 6 to 8 parts of dihydroxyl-terminated polydimethylsiloxane, 14 to 16 parts of polycaprolactone glycol, 2 to 4 parts of 1,6-hexamethylene diisocyanate, 0.5 to 1 part of dibutyltin dilaurate, 4 to 6 parts of 4,4'-dimethyl-2,2'-dipyridyl and 0.5 to 0.8 part of 1,4-butanediol. The asphalt mixture is reasonable in process designand proper in component proportion, the prepared asphalt mixture has excellent anti-rutting capacity, the high-temperature stability and the water stability of the asphalt mixture are improved, and the asphalt mixture can be applied to roads with large traffic volume and more heavy-load and overload vehicles and has higher practicability.

The invention belongs to the technical field of asphalt modification. The invention relates to an asphalt modifier, in particular to a high-viscosity high-modulus asphalt modifier. The asphalt modifier is prepared from the following raw materials in parts by weight: 100 parts of a styrene-butadiene-styrene block copolymer, 30-35 parts of a high-modulus main agent, 20-30 parts of a high-viscosity main agent, 10-15 parts of butadiene styrene rubber, 1-5 parts of zinc oxide, 1-5 parts of carbon black, 2-4 parts of glass fibers, 1-5 parts of an efficient solubilizer and 1-3 parts of an antioxidant. The preparation method comprises the following steps: (1) weighing the styrene-butadiene-styrene block copolymer, the high-modulus main agent, the high-viscosity main agent, the styrene-butadiene rubber, the efficient solubilizer and the antioxidant, sequentially adding into a stirring device, and stirring at room temperature for 20 minutes to obtain a mixture; and (2) adding zinc oxide, carbonblack and glass fiber into the mixture, stirring for 10 minutes, and then extruding and granulating by adopting a double-screw extruder to obtain the high-viscosity and high-modulus asphalt modifier.

The invention provides a preparation method of mixed pitch used for road building. The method comprises: a first step of preparing materials, namely a step of preparing 15-30% by weight of coal pitch, 42-51% of petroleum pitch and 28-34% of slurry; a second step of mixing, namely a step of heating the coal pitch, the petroleum pitch and the slurry to melt the materials, and uniformly stirring at 150-180 DEG C; a third step of shearing, namely, a step of subjecting the mixture obtained from the second step to high-speed shearing at 150-180 DEG C by utilization of a shearing emulsifying machine; and a fourth step of curing, namely, a step of maintaining the temperature of the mixture obtained in the third step at 150-180 DEG C and stirring. The mixed pitch allows the coal pitch and the petroleum pitch to be mixed more uniformly, thus largely reliving segregation. The mixed pitch is high in adhesive force, anti-ageing, and high in rutting resistance.

The invention discloses an ultrathin asphalt mixture, and a preparation method and an application thereof. The ultrathin asphalt mixture comprises, by mass, 80-90% of aggregates, 2-7% of mineral powder, 2.5-5% of Indonesian Buton rock asphalt, 4-6% of matrix asphalt and 1-2% of polyester fibers; and the grading type of the aggregates is improved ECA-10. The ultrathin asphalt mixture has excellent comprehensive properties, has greatly improved anti-rut performance, mechanical performances, wear resistance, water loss resistance, durability and other use performances, and also has the advantages of excellent low-temperature performances, strong self-adhesion, basic zero water seepage, and high cost performance. The preparation method of the ultrathin asphalt mixture has the advantages of simplicity and low cost. The thickness of an ultrathin asphalt pavement made of the mixture is 2-2.5 cm, the cost is 60-70 yuan / m<2> only, and the mixture has a high cost performance and wide market application values.

The invention provides a foamed asphalt containing sodium hypochlorite oxidized waste tire rubber powder, and relates to the field of pavement materials. The foamed asphalt is prepared from, by weight, 40 to 60 parts of SBS modified asphalt, 10 to 15 parts of a zeolite powder / ZnO compound, 20 to 30 parts of ordinary Portland cement, 12 to 18 parts of the sodium hypochlorite oxidized waste tire rubber powder, 10 to 20 parts of fly ash, 1 to 5 parts of a sulfinic acid lactone type foaming agent, 0.1 to 1 part of glycidyl methacrylate, 5 to 10 parts of dimethyl phthalate, 1 to 3 parts of hydroxypropyl methylcellulose, 20 to 30 parts of basalt stone, 50 to 60 parts of aggregate, 2 to 4 parts of pentaerythritol, 5 to 10 parts of reinforced fibers and 12 to 15 parts of a binder. The prepared foamed asphalt is excellent in mechanical properties and high in water stability, the foamed asphalt still has high cohesive force under the action of freeze-thaw cycle, the splitting strength is reducedwithin an acceptable range, and the foamed asphalt is high in rut resistance and suitable for large-scale application.

The invention relates to an asphalt mixing material performance enhancing agent and a preparation method thereof, and belongs to the technical field of road materials. The asphalt mixing material performance enhancing agent is composed of rock asphalt and an extra additive. The mass ratio of the rock asphalt to the extra additive is larger than 9:1. The invention further provides the preparation method of the asphalt mixing material performance enhancing agent. The asphalt mixing material performance enhancing agent can be easily molten and distributed into an asphalt mixing material, the efficacy of improving performance of the asphalt mixing material can be brought into full play, the high-temperature stable performance is kept, and meanwhile the better water stability and low-temperature anti-cracking performance are achieved.

The invention discloses a drainage asphalt pavement structure and a construction method thereof. The drainage asphalt pavement structure sequentially comprises a soil base, a water-resisting layer, adrainage cushion layer, a reinforced gravel base layer, an assembly type interlocking water storage layer, a permeable transition layer, a permeable stress absorption layer and a drainage asphalt pavement layer from bottom to top. The reinforced gravel base layer is formed by combining honeycomb geocells and gravels; the assembly type interlocking water storage layer is formed by combining an assembly type concrete structure and a rubble layer; and the drainage asphalt surface layer adopts PAC-10 or PAC-13 and is formed by mixing, paving and rolling high-viscosity modified asphalt, 0.2-0.6% ofRC-GUARD<R> modified polypropylene monofilament fibers, coarse aggregate, fine aggregate, filler, 0.15-0.2% of an anti-stripping agent and 0.25-0.4% of an anti-rutting agent. The problems that the existing drainage asphalt pavement is easy to peel, loosen and block, and the pavement structure is low in water storage, water retention and durability are effectively solved, and the drainage asphaltpavement structure can be widely applied to parking lots, squares, park roads and light load roadways.

The invention relates to the technical field of road engineering materials, and particularly discloses anti-rutting asphalt and a preparation method thereof. The anti-rutting asphalt comprises an asphalt mixture and cement slurry in a weight ratio of (3-4.8): 1; based on the total amount of the asphalt mixture, the asphalt mixture is prepared from the following raw materials in parts by weight: 3-10 parts of matrix asphalt, 80-100 parts of coarse aggregate, 10-20 parts of fine aggregate and 0.05-0.3 part of an anti-rut agent, based on the total amount of the cement slurry, the cement slurry is prepared from the following raw materials in parts by weight: 0-70 parts of cement, 80-100 parts of water, 20-40 parts of mineral powder, 40-80 parts of sand and 2-6 parts of an additive, the preparation method comprises the following steps: firstly preparing the asphalt mixture, then flattening, pouring the cement slurry on the flattened asphalt mixture, and curing to obtain the asphalt pavement. The asphalt provided by the invention has excellent anti-rutting performance.

The invention aims at providing a tunnel bituminous pavement clearing functional layer, characterized in that: the layer comprises a clearing binder material and a clearing macadam material, wherein, the clearing binder material comprises a component A and a component B with the weight ration of A to B being 1 to 1, and the clearing macadam material comprises market artificial white stones satisfying the specific performance indexes. The invention has the advantages of excellent rutting resistance, low temperature crack resistance and water damage resistance, wherein, the drawing and bonding intensity of the clearing binder material is greatly increased, the specially-produced clear macadam has bright color and good angularity, the adhesiveness between the bonding material and the stones is greatly improved, thus the structural integrity and functionality of the surface of the pavement are excellent.

The invention discloses a high-temperature-resistant anti-rut asphalt mixture which comprises the following raw materials in parts by weight: 15-18 parts of pretreated asphalt, 30-35 parts of zinc chloride, 5-10 parts of heat conduction material, 8-12 parts of glass fiber, 5-10 parts of admixture and 90-100 parts of aggregate. The pretreated asphalt is prepared from the following raw materials in parts by weight: 8-14 parts of modified asphalt, 6-8 parts of dihydroxyl-terminated polydimethylsiloxane, 14-16 parts of polycaprolactone glycol, 2-4 parts of 1, 6-hexamethylene diisocyanate, 0.5-1 part of dibutyltin dilaurate and 4-6 parts of 4, 4'-dimethyl-2, 2'-dipyridyl, and 0.5-0.8 part of 1, 4-butanediol. The preparation method is reasonable in process design and proper in component proportion, the prepared asphalt mixture has excellent anti-rutting capacity, the high-temperature stability and the water stability of the asphalt mixture are improved, and the asphalt mixture can be applied to roads with large traffic volume and more heavy-load and overload vehicles and has higher practicability.

The invention discloses a water-permeable anti-cracking road structure and a construction method thereof. The water-permeable anti-cracking road structure sequentially comprises a water-permeable abrasion layer surface layer, a geocell open graded broken stone water-permeable cement concrete upper base layer, a geocell medium-coarse sand lower base layer, a geocell plain soil subbase layer and a roadbed from top to bottom. The pocket constraint effect of the geocell enables the soil composite elasticity modulus of the geocell to be increased exponentially, and meanwhile, the lateral deformation of the roadbed and the generation and development of cracks can be powerfully limited; and the thick plate effect generated by overlapping the three geocell structure layers guarantees that the roadbed has enough bending rigidity so as to reduce differential settlement of the road surface. The road structure belongs to a permeable pavement, has the advantages of environmental friendliness, modular design, convenience and quickness in construction, low construction cost and the like, can effectively avoid pavement cracks, high-temperature ruts and other diseases, and greatly enhances the driving safety and driving comfort in rainy days. The road structure and the method are suitable for various urban roads, grade highways, sports fields, squares, runways and other projects.

The invention discloses multifunctional modified asphalt and a preparation method thereof, and belongs to the technical field of road engineering materials. According to the multifunctional modified asphalt prepared by the method disclosed by the invention, the dynamic viscosity at 60 DEG C is greater than 20000 Pa*s, the adhesion with stones at high temperature is strong, and the mixing at 130 DEG C can be achieved. The multifunctional modified asphalt has the advantages of high softening point, high ductility, high elastic recovery capacity, high toughness, aging resistance and the like, andhas the excellent properties that the elastic recovery rate is higher than 95% and the like. According to the method, only a shearing process is needed, and relatively high-viscosity, high-viscosityand high-elasticity modified asphalt needs complex processes such as development and maintenance, so that the purpose of saving the cost is achieved, the production is simple, and manpower idle work and equipment loss are greatly reduced. The multifunctional modified asphalt can be applied to laying of drainage pavements, bridge waterproof bonding stress absorption layers, fine surfacing, ultrathin wearing layers, airport pavements and the like.

The invention relates to a graded crushed stone pouring type semi-flexible composite pavement mixture, comprising 100 parts of graded crushed stone in the following mass fractions; 4-6 parts of water; 6-10 parts of grouting material; the grouting material includes cement , water-based acrylic resin, pozzolan material and water, the tank slurry is poured into the graded crushed stone. The semi-flexible composite pavement mixture of the present invention can be constructed at normal temperature, which can effectively solve the problem of asphalt pavement rutting and improve the durability of the pavement; reduce the pollution of the poured semi-flexible pavement hot-mix construction to the environment; improve The construction efficiency of the poured composite pavement reduces the production cost.

The invention discloses a process for quickly repairing semi-rigid substrate damage of an asphalt pavement, which comprises the following steps: milling and planing an asphalt topping and a loose substrate at normal temperature, leveling a roadbed, spreading gravels having a thickness of 10-20cm, spreading large stone asphalt mixtures of 25-40cm at twice, paving glass fiber grids, spreading coarse graded asphalt, cooling before opening to traffic for 2-3 days, and finally spreading topping asphalt concrete, thus finishing the quick repair of the semi-rigid substrate damage of an asphalt pavement. The invention can resist high plastic and shear deformation and bear heavy-duty traffic action, has fine rutting resistance, improves the high-temperature stability and water stability of the asphalt pavement, and has fine drainability; the on-site construction process is simple and feasible, and the operation time is short; the reflection crack resistance and pavement deformation resistance of the pavement are improved; the bonding property with the asphalt topping is fine, and the pavement structure can be stressed more evenly, thereby having high lasting quality; and by increasing large stone aggregate and reducing powdered ore, the construction cost is lowered.