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 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 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 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 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 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 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 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 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 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 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 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 discloses a combined ultra-thin long-life pavement structure and a construction method thereof. The structure includes an anti-slip and wear layer, a durable load-bearing layer, an anti-fatigue layer and a high-strength composite base, which can solve the current shortage of sand and gravel in the construction market. , Improve long-life pavement performance, reduce construction energy consumption and emissions.

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 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 relates to a flame-retardation asphalt mixture and a preparation method thereof. The flame-retardation asphalt mixture comprises the following components in parts by mass: 270-320 partsof matrix asphalt, 11-17 parts of polyimide fiber, 4435-4815 parts of aggregates, 285-310 parts of ore powder, and rubber powder accounting for 20% of mass of the matrix asphalt. The method is characterized in that the matrix asphalt is preheated, the rubber powder is added to obtain the rubber asphalt, the aggregates and the polyimide fiber are added and uniformly mixed, and the ore powder is added. The steps are simple, the prepared asphalt mixture has high flame retardation efficacy, can obviously reduced the combustibility of the asphalt in flame, has good flame retardancy and self-extinguishing character, and can improve the performance of the asphalt mixture for roads.

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.