32results about How to "Improved anti-rutting" patented technology

The invention relates to a warm-mixed asphalt mixture and a preparation method thereof. The warm-mixed asphalt mixture is mainly applied to new construction and maintenance of high-grade roads and common roads, and is particularly suitable for cities, parks, tunnels and the like with high environmentally-friendly requirements. The warm-mixed asphalt mixture mainly comprises about 92.4-96.5 percent by weight of mineral, about 3.4-7.5 percent by weight of asphalt cement and 0.05-1.0 percent by weight of chemical modified adhesive cement. The preparation method comprises the following steps of: simultaneously pumping the chemical modified adhesive cement and the hot asphalt cement to the spraying port of a foam generator, fully mixing to generate a foam-containing hot asphalt mixture, spraying the foam-containing hot asphalt mixture into a mixing pan, and further mixing the foam-containing hot asphalt mixture and the hot mineral to form the warm-mixed asphalt mixture. The chemical modified adhesive cement can effectively reduce the mixing, spreading and rolling temperature of the asphalt mixture, and solves the problems of environmental pollution, high energy consumption, asphalt ageing regression and the like. By selecting high-concentration cationic chemical modified latex as a matrix stock of the chemical modified adhesive cement and simultaneously matching a proper proportion of cationic surfactant with lubricating effect and peeling resistance, the influence of the conventional warm-mixed asphalt additive on poor reducing performance and poor adhesive performance of the asphalt cement is solved, and the properties of the warm-mixed asphalt mixture such as water damage resistance, rutting resistance, fatigue resistance, low temperature resistance and the like are improved.

The invention relates to a warm-mix asphalt additive and a preparation method thereof. The additive comprises the following components in percentage by weight: 87 to 98 percent of chemical modification latex, 0.5 to 12 percent of lubricative and peeling resistant cation surfactant and 0.1 to 2.0 percent of acid. The method comprises the following steps of: heating the chemical modification latex to the temperature of between 40 and 80 DEG C with stirring, and dripping 0.1 to 0.5 percent of acid slowly; adding the lubricative and peeling resistant cation surfactant, stirring fully, and dispersing uniformly; and continuing to drip 0.1 to 1.5 percent of acid slowly, stirring uniformly, keeping the temperature of between 40 and 80 DEG C and storing for later use. By the warm-mix asphalt additive and the preparation method, the viscosity of asphalt binders during mixing can be reduced effectively, the reduction performance of asphalt cements and adhesivity between the asphalt cements and aggregates can be improved, the water damage resistance and durability of warm-mix asphalt mixtures can be improved, the tensile strength of asphalt can be improved, and the rutting resistance, fatigue resistance and low temperature resistance of the warm-mix asphalt mixtures can be enhanced.

The invention relates to a polyurethane modified asphalt waterproof roll. The polyurethane modified asphalt waterproof roll is of a five-layer structure which comprises, from top to bottom, a top isolating layer, an upper modified asphalt layer, a padding layer, a lower modified asphalt layer and a bottom isolating layer, wherein the upper modified asphalt layer and the lower modified asphalt layer are prepared from modified asphalt. The polyurethane modified asphalt waterproof roll is greatly improved in tearing strength, adhesion, water resistance, aging resistance and the like, has high elongation at break, and overcomes the disadvantages of tedious preparation, weak adhesion and the like of conventional waterproof rolls. A production method for the polyurethane modified asphalt waterproof roll is simple. As the polyurethane modified asphalt waterproof roll is applied to a building, a contact surface of the polyurethane modified asphalt waterproof roll and the base surface of the building has good bonding strength and waterproof effect, so the waterproof roll is effectively prevented from water seepage and water leakage.

The invention relates to the technical field of traffic paint and in particular relates to hot-melt traffic paint and a preparation method thereof. According to the paint, multiple functional aids areselected to be combined to be used, the wear resistance, cracking resistance, corrosion resistance and antifouling property of the paint are improved. The primer paint can be well combined with the ground, so that pavement micro-pores are closed, the variation of the pavement and traffic line deformation under high-temperature or high-pressure conditions can be balanced, cracking even drop of thetraffic line caused by the variation of the deformation is reduced, and the mind-set of improving the cracking resistance, drop and other inner performances of the traffic line by adjusting the components and doses of various aids in the paint only in the traditional paint is broken; coloring pigments and auxiliary luminous materials are added into intermediate paint layer to serve as a traffic sign luminous layer and are combined with the surface paint to be used; glass beads are added into the surface paint, so that the reflective refraction of the coating is improved. Due to rare-earth high polymer photoluminescence materials and nano fluorescent particles in the intermediate layer and the surface layer, the visibility of the traffic line is obviously improved.

The invention discloses asphalt cement doped with surface treated basalt fiber and crumb rubber. The asphalt cement comprises the components in parts by mass as follows: 82.7-86.3 parts of matrix asphalt, 13.1-16.4 parts of the surface treated crumb rubber and 0.6-0.9 parts of the surface treated basalt fiber, and the mass sum of the components is 100, wherein a coupling agent solution is adopted for surface treatment of the basalt fiber and the crumb rubber, and the composition ratio of a coupling agent to water to ethanol for the coupling agent solution is 1:(3-6):(10-20). The asphalt cement is mainly applied to an asphalt pavement in an area with high temperature in summer, and can improve the anti-rutting capacity and anti-cracking capacity of the asphalt pavement effectively, reduce the maintenance cost of the asphalt pavement and prolong the service life of the asphalt pavement.

The invention relates to a heating system for epoxy asphalt steel bridge deck pavement and a pavement method. The heating system can be used for controlling the operation temperature in the epoxy asphalt steel bridge deck pavement process, thereby shortening the curing time of epoxy asphalt, further greatly shortening a construction period and reducing the maintenance time before the opening to traffic. Simultaneously, the invention provides a pavement method using the heating system for epoxy asphalt steel bridge deck pavement; and the pavement method can enable the epoxy asphalt steel bridge deck pavement to be constructed in winter and can also be adopted in summer when fast curing is needed.

The invention relates to high-viscosity high-elasticity modified asphalt produced from Bachaquero crude oil straight-run asphalt and a preparation method thereof. Raw materials include 85-90 parts by mass of matrix asphalt, 5-10 parts by mass of an SBS modifier, 1-2 parts by mass of extract oil, 2-4 parts by mass of a ductility improver and 0.1-0.3 part by mass of a stabilizer. The high-viscosity high-elasticity modified asphalt is low in cost, has the viscosity of more than 100000Pa.s at the temperature of 60 DEG C, is an asphalt binder with excellent performance and can be applied to bridge deck pavement, drainage road pavement and permeable pavement, the durability of an asphalt mixture can be effectively improved, the operating requirement of the drainage asphalt mixture can be completely met, and the blended asphalt mixture has excellent moisture damage resistance, rut resistance and scattering resistance.

The invention discloses an asphalt road, and belongs to the field of roads. The asphalt road comprises a roadbed, a subgrade and a road surface. The subgrade is arranged in the roadbed and is provided with a horizontal layered structure. The subgrade is provided with a first mixed slag layer, a rubble layer, a second mixed slag layer and a concrete layer from bottom to top, and a geogrid and low-voltage shielded wires are arranged in the second mixed slag layer. A plurality of solar photovoltaic modules are arranged in the middle of the road surface in the road extension direction, and the solar photovoltaic modules are connected with a photovoltaic inverter through the low-voltage shielded wires. The asphalt road has the characteristics of being high in flatness, capable of avoiding the circumstances of insufficient partial compaction degrees, serious temperature segregation and the like, good in road surface temperature sensing property, good in elasticity and ageing-resistant performance, not prone to melting or flowing at high temperatures, good in toughness and not likely to be cracked at low temperatures, capable of meeting the using requirements of high-grade roads, and capable of fully utilizing high temperatures of the road surface to conduct solar power generation.

The invention discloses warm mixed epoxy asphalt. The product comprises a warm mixed asphalt, an epoxy resin composition and a curing agent. The warm mixed asphalt comprises a warm mixing agent and matrix asphalt. The warm mixing agent is prepared by performing a sweating process by taking a byproduct polyethylene wax as a raw material. In the sweating process, oil soluble organic matters capable of decomposed to generate gas are pre-added into the byproduct polyethylene wax raw material, and micro-bubbles are formed in a wax layer by means of gas generated by the byproduct polyethylene wax which is heated, so that a liquid component is quickly discharged and separated; meanwhile, in the sweating process, the liquid component is carried out through the wax layer by means of the air flow to separate the solid component from the liquid component in a forced manner, so that the low molecular weight components in the raw material are removed more effectively. The warm mixing agent used in the product not only can play a warm mixing role on the asphalt, but also can improve the thermal stability of the asphalt, improve the anti-thermal aging property, reduce the fusing temperature of the asphalt and the viscosity at the temperature, and reduce the generation amount of harmful gas.

The invention discloses a warm-mixing epoxy asphalt mixture and a preparation method thereof. The warm-mixing epoxy asphalt mixture comprises the following components by weight percentage: 4.0-6.0% of warm-mixing epoxy asphalt, 1.0-3.0% of ore powder, and 91.0-95% of an aggregate; wherein, the warm-mixing epoxy asphalt mixture comprises a component A, a component B, and a component C, wherein the component A is warm-mixing asphalt, the warm-mixing asphalt comprises a warm-mixing agent and a matrix asphalt; the component B is an epoxy resin composition; and the component C is a curing agent. The preparation method of the warm-mixing agent comprises the following steps: under the effect of a catalyst, high-molecular alkane is reacted with a halogen simple substance to obtain an intermediate; aromatic hydrocarbons oil and a complex are uniformly mixed to obtain an aromatic hydrocarbons complexation component; the aromatic hydrocarbons complexation component is added in the intermediate, under the catalysis effect of the complexation component, and the aromatic hydrocarbons complexation component and the intermediate are reacted to obtain the warm-mixing agent. The epoxy asphalt mixture has good Marshall stabilization degree, rut resistance and water damage resistance capabilities.

The invention discloses a preparation method of low-cost anti-segregation anti-aging modified asphalt, which adopts styrene butadiene styrene triblock copolymer (SBS), polyphosphoric acid (PPA), a stabilizer, rubber oil and other materials to modify 90 # A-grade road petroleum asphalt, thereby the low-cost anti-segregation anti-aging composite modified asphalt is prepared, and various performanceindexes of the 90 # grade-A road petroleum asphalt should meet the specification requirements. The use amount of the SBS is more than 2.5%; wherein the dosage of the stabilizer is more than 0.05%, andthe dosage of the rubber oil is more than 1.5%. The SBS modifier is added into the 90 # asphalt, stirring is carried out for 30 minutes by adopting a constant-temperature stirrer, the stabilizer andthe rubber oil are doped into the swollen modified asphalt, shearing is performed for 40 minutes by adopting a high-speed shearing machine, the condition that a large number of bubbles are generated on the surface of the asphalt in the shearing process can be observed and the shearing rate basically does not change suddenly, and the shearing is completed. According to the invention, the use amountof SBS can be reduced by about 0.6%-0.8%, and the cost can be reduced by at least 81 yuan/ton.

The invention discloses a semi-flexible functional combined structure recovery layer applied to asphalt pavement maintenance. The rear semi-flexible functional combined structure recovery layer of themilled original upper middle surface layer sequentially comprises an SBS modified asphalt bonding layer, a polymer modified cement paste poured macroporous asphalt mixture semi-flexible middle surface layer, a synchronous broken stone sealing layer and an ultrathin wearing layer from bottom to top, wherein the polymer modified cement paste poured macroporous asphalt mixture semi-flexible middle surface layer has thickness of 7-9 cm, the material is specifically polymer modified cement paste poured macroporous asphalt mixture,, the synchronous broken stone sealing layer is composed of SBS modified asphalt and limestone with the single particle size of 7.2-9.5 mm, thickness of the ultrathin wearing layer is 1.5-2.5 cm, the ultra-thin wearing layer is made of a densely-prepared SBS modifiedasphalt mixture, and total thickness of the semi-flexible function combination structure recovery layer is the same as the milling thickness. The rear semi-flexible functional combined structure recovery layer can be applied to the field of asphalt pavement maintenance such as asphalt pavement structural damage repair and heavy-load traffic pavement function improvement.

The invention discloses PG82-22 grade modified asphalt and a production method thereof. The modified asphalt comprises the following components in parts by weight: 100 parts of road petroleum asphalt, 4.0-6.0 parts of an SBS modifier, 0-3.0 parts of rubber oil, 0-3.0 parts of a PG reinforcing agent and 0.1-0.5 part of a stabilizer, wherein the road petroleum asphalt is straight-run asphalt of which the needle penetration at 25 DEG C is 60-800.1 mm and the ductility at 10 DEG C is greater than 100cm; specifically, at least one of imported Korean double dragon 70 # asphalt, Korean SK70 # asphalt and Korean GS70 # asphalt is selected and mixed with at least one of domestic asphalt Dalian Xitai 70 #, Zhenhai 70 #, Shandong leap city 70 #, Shandong Jingbo 70 # and Shandong Hai right 70 # in proportion; the PG reinforcing agent is a new material HW type product of Wenchang in Jiangsu. By adding the PG reinforcing agent, the high-temperature PG performance of the asphalt is improved, the viscosity of the asphalt is improved, the compatibility among the components is good, separation and layering are avoided, and the asphalt has excellent rutting resistance and ageing resistance and has good practicability and economical efficiency.

The invention relates to a high-modulus anti-oil-corrosion asphalt mixed material. The asphalt mixed material contains the following components: an aggregate with a particle size of 10mm-15mm, an aggregate with a particle size of 5mm-10mm, an aggregate with a particle size of 3mm-5mm, an aggregate with a particle size of 0-3mm, mineral powder with a particle size of 0-0.15mm, glass fiber, a high-modulus modifying agent, an anti-oil-corrosion agent and matrix asphalt. The invention simultaneously provides a preparation method of the high-modulus anti-oil-corrosion asphalt mixed material. The high-modulus anti-oil-corrosion asphalt mixed material has a relatively good anti-oil-corrosion effect and simultaneously has relatively high modulus, and a production process is simple; and the anti-oil-corrosion agent is used by virtue of a direct feeding method, and asphalt modifying equipment and other equipment are not additionally required in the construction, so that the construction is relatively convenient.