348 results about "Rubberized asphalt" patented technology

The invention discloses a high-dosage RAP recycled asphalt mixture and a preparation method thereof, and the method comprises the following steps: step 1, carrying out homogenization treatment on an epoxy resin system and a rubber-asphalt composite system according to a weight ratio of 1: 5-1: 30 to obtain a composite modified asphalt system; 2, preheating the waste asphalt pavement material to 110-130 DEG C, performing dry mixing, adding a petroleum ether regenerant, heating to 150-170 DEG C, and performing dry mixing again to obtain a mixture 1; step 3, preheating new fine aggregate, coarse aggregate and steel slag in batches, adding into the mixture 1, and carrying out dry mixing to obtain a mixture 2 with a primary grading framework; step 4, adding the composite modified asphalt system prepared in the step 1 into the mixture 2, and performing wet mixing to obtain a mixture 3; and step 5, homogenizing the mixture 3 to finally obtain the target recycled asphalt mixture. The invention aims to realize high-mixing-amount recycling of the waste asphalt pavement material.

The invention discloses carbon-based material loaded hydrotalcite synergistically modified composite rubber asphalt which comprises the following components in percentage by mass: asphalt, rubber powder, a dispersing agent, a retarder, carbon-based material loaded hydrotalcite, an antioxidant and a heat stabilizer. The carbon-based material loaded hydrotalcite, the antioxidant and the heat stabilizer are compounded, so that the ultraviolet aging resistance, the oxidation aging resistance and the mechanical strength of the composite rubber asphalt can be remarkably improved, the limitation of a single modified material is effectively overcome, and the service life of an asphalt road is greatly prolonged.

The invention provides low-temperature-resistant high-modulus rubber asphalt and a preparation method thereof, and relates to the technical field of rubber asphalt, and preparation raw materials of the low-temperature-resistant high-modulus rubber asphalt comprise the following components: matrix asphalt, rubber powder, a desulfurizer, a free radical type thermal initiation crosslinking agent, a reinforcing agent, a coupling agent, a flexibilizer, a viscosity reducer and an auxiliary agent. According to the low-temperature-resistant high-modulus rubber asphalt provided by the invention, the ductility at 5 DEG C is greater than 30cm, the maximum breaking flexural-tensile strain of a mixture at-10 DEG C is greater than 4000 mu epsilon, the dynamic modulus of the mixture at 15 DEG C is greater than 15000MPa, and the high-temperature performance and modulus of high-modulus asphalt concrete are not reduced while the crack resistance of the high-modulus asphalt concrete is helped to be improved. When being applied to pavement middle layer pavement, the pavement anti-cracking agent can improve the anti-cracking performance of the whole pavement structure, reduce the pavement maintenance cost and improve the driving safety.

The invention provides tail gas treatment equipment for rubber asphalt production, which comprises a treatment tank, and further comprises an inner cylinder arranged on the inner side of the treatment tank, and the upper part of the inner side of the inner cylinder is provided with a fine filter screen and a coarse filter screen; a plurality of cleaning pipes are circumferentially distributed and mounted on the rotating shaft on the upper side of the coarse filter screen, cleaning brushes are mounted on the lower sides of the cleaning pipes, blowing holes are formed in the lower sides of the cleaning pipes, a plurality of reverse blowing pipes are circumferentially distributed and mounted on the rotating shaft on the lower side of the fine filter screen, and blowing heads are mounted on the upper sides of the reverse blowing pipes; the pressure relief reverse blowing mechanism is used for conveying compressed air to the inner cavity of the rotating shaft; and the regulation and control mechanism is used for controlling and regulating air in the inner cavity of the rotating shaft to be conveyed to the cleaning pipe and the reverse blowing pipe. Through graded filtration of the double-layer filter screen and cooperative dust removal of the cleaning brush and the reverse blowing nozzle, particulate matters are effectively intercepted, long-acting smoothness of the filter screen is ensured, and the tail gas purification efficiency and the system operation stability are improved.

The invention relates to the technical field of rubber asphalt, in particular to a pavement rubber asphalt crack pouring adhesive and a preparation method thereof. The pavement rubber asphalt crack pouring adhesive is prepared from the following components in parts by mass: asphalt, rubber powder, a compatilizer, modified silicon dioxide, a silane coupling agent and an auxiliary agent, according to the pavement rubber asphalt crack pouring adhesive, asphalt, rubber powder and modified silicon dioxide are compounded; the preparation method comprises the following steps: treating nano silicon dioxide by adopting a KH570 silane coupling agent, introducing unsaturated double bonds into the nano silicon dioxide, then carrying out free radical polymerization on the nano silicon dioxide, alpha-octadecene and sulfobetaine methacrylate under the catalysis of BPO, and respectively introducing long-chain alkyl, sulfo and betaine groups into the modified nano silicon dioxide, so as to obtain the modified nano silicon dioxide. The interfacial compatibility among the components is improved, so that the high-temperature stability and the mechanical property of the crack pouring adhesive are improved.

The invention discloses a flue gas filtration treatment device based on rubber asphalt processing, relates to the technical field of flue gas filtration, and solves the problem that rubber asphalt flue gas can be attached to a first threaded sleeve rod, a threaded sleeve block and a cutting ring, so that aging of the first threaded sleeve rod, the threaded sleeve block and the cutting ring is accelerated. A spraying tower is mounted on the front side of the premixing tank, a filter is mounted on the lower side of the spraying tower, the spraying tower is communicated with the filter through a guide pipe, and a flue is fixedly mounted between the spraying tower and the premixing tank; according to the device, the ejection assembly and the driving mechanism are installed, a triangular driving block in the driving mechanism can drive a gasket to move in the flue through an ejection rod, a solid layer formed on the inner wall of the flue through cooling can be ejected open, the solid layer on the inner wall of the flue can rapidly fall off, and the interior of the flue can be conveniently and rapidly cleaned; and main structures of the material jacking assembly and the driving structure are both located on the outer side of the flue, and the main structures can be effectively prevented from being corroded by asphalt flue gas.

The invention relates to the technical field of waterproof coiled materials, and particularly discloses a self-adhesive modified rubber asphalt waterproof coiled material and a preparation method thereof. The self-adhesive modified rubber asphalt waterproof coiled material comprises a surface isolating membrane, an asphalt layer, a reinforcing layer and a bottom surface isolating membrane from bottom to top, and the asphalt layer comprises the following raw materials: regenerated rubber modified asphalt, SEBS, terpene resin, polyisobutene amine, an antioxidant and an ultraviolet light absorber; the surface isolating membrane and the bottom isolating membrane are selected from sand surface isolating membranes, and the thickness of the surface isolating membrane and the bottom isolating membrane is 0.8-1.2 mm; and the reinforcing layer is a long-fiber polyester base reinforcing layer. The tensile strength of the self-adhesive modified rubber asphalt waterproof coiled material is 4.5-5.6 N / mm < 2 >, the self-adhesive modified rubber asphalt waterproof coiled material does not flow or drip at 70 DEG C and does not crack at-30 DEG C, the self-adhesive modified rubber asphalt waterproof coiled material has high use performance, the joint peel strength of the waterproof coiled material is 3.2-4.2 N / mm, the holding power is greater than 15 min, and the self-adhesive property of the waterproof coiled material is improved.

The invention discloses homogenization equipment for rubber asphalt processing, and relates to the technical field of rubber asphalt processing equipment, the homogenization equipment comprises an intelligent control system, the intelligent control system comprises a data analysis module, a homogenization analysis module, a compensation analysis module and an execution judgment module; the data analysis module is used for receiving and processing the sensing data sent by the sensor group to obtain a statistical index of any parameter in the sensing data; performing environment analysis on the data preprocessed by the sensor group in combination with a statistical index to obtain a homogeneous analysis result; and the homogenization analysis module is used for evaluating the mixing quality in the stirring process based on the homogenization analysis result. By arranging the multi-dimensional sensor group in the mixing box and constructing the three-dimensional space model, real-time three-dimensional monitoring and intelligent analysis of temperature, viscosity and concentration parameters in the rubber asphalt mixing process are realized, parameter abnormal points and trend changes can be identified, and the problems that traditional equipment is lagged in monitoring and cannot capture spatial distribution characteristics are solved.

The invention provides an optimization design method of a fiber rubber gravel seal layer for inhibiting pavement reflection cracks. The optimization design method comprises the following steps: determining optimal fibers; determining an optimal aggregate; preparing a plurality of groups of third test pieces by taking the optimal fiber dosage, the optimal aggregate spreading amount and the optimal rubber asphalt dosage as variables through an orthogonal test; and combining the third test piece with the base layer with the crack and the overlay layer, preparing a fourth test piece, carrying out a reflection crack simulation test, and determining the combination of the material with the optimal crack resistance according to the test result. The method takes the reflection crack resistance of the fiber rubber asphalt macadam seal as a main evaluation index, and has the advantages of scientificity, reasonability and accuracy compared with the prior art. The fiber rubber gravel sealing layer obtained through the design method has excellent reflection crack resistance, the crack resistance of the composite pavement can be remarkably improved, the pavement maintenance and repair cost can be reduced, the pavement service cycle can be prolonged, and the fiber rubber gravel sealing layer has wide popularization and application prospects.

The invention provides a water-based rubber asphalt waterproof coating and a preparation method thereof, and belongs to the technical field of building waterproof materials. The coating comprises the following raw materials in parts by weight: 50-60 parts of asphalt, 50-60 parts of water, rubber emulsion: 8-12 parts of SEBS emulsion, 6-8 parts of rubber emulsion, 3-5 parts of an emulsifier, 0.2-0.5 part of a stabilizer, 2-3 parts of a coupling agent and 5-10 parts of filler. The invention also provides a preparation method of the water-based rubber asphalt waterproof coating. The waterproof coating has the advantages of high tear strength, high elastic recovery, high elongation, high self-healing property and the like, and also has excellent high temperature resistance, low temperature resistance, ozone resistance, ultraviolet resistance, aging resistance and weather resistance, so that the waterproof service life of a building is prolonged, and the waterproof coating is not only suitable for cold regions, but also suitable for hot regions, is wide in application territorial scope, and is worthy of popularization and application. And the use requirements of different regions and different climatic environments in China can be met.

The utility model discloses a layered waterproof structure for a temporary reserved hole part of a building roof face, which comprises a temporary hole formed in a concrete floor, a two-way steel bar with the diameter of 8mm is implanted in the inner wall of the temporary hole, a square water stop strip is arranged on the two-way steel bar, and filling concrete is arranged on the outer side of the water stop strip. The filling concrete is coated with an interface agent, the outer side of the interface agent is provided with a cement-based capillary crystalline waterproof coating, and the thinnest part is provided with C5.0 lightweight aggregate concrete with the thickness of 30; a non-cured rubber asphalt waterproof coating with the thickness of 3.0 mm, a viscous polymer modified asphalt waterproof coiled material with the thickness of 3.0 mm, an S20 cement mortar protective layer with the thickness of 10, an extruded polyethylene foam plastic heat preservation layer with the thickness of 100, a low-strength-grade mortar isolation layer with the thickness of 10 and a C20 fine aggregate concrete protective layer with the thickness of 40 are sequentially arranged on the outer side of the C5.0 lightweight aggregate concrete with the thickness of 3.0 mm. The characteristics and functions of different materials are combined, so that the waterproof performance and durability of the building or the structure are effectively improved.

The utility model discloses a feeding device for production of spraying rapid-hardening rubber asphalt waterproof paint, and belongs to the technical field of waterproof paint production. Comprising a high-position storage tank, a feeding tank and a rodless scraping unit, and a filling alarm is arranged at the top of the high-position storage tank; the high-level storage tank is provided with a slurry feeding pipe below the filling alarm, and the slurry feeding pipe is connected to the storage tank through a slurry pump set; a first electric control valve group is arranged between the feeding tank and the high-position storage tank; a heating jacket is fixedly sleeved outside the feeding tank; the heating jacket is connected in series with a steam supply unit; the bottom of the feeding tank is connected with a second electric control valve group; according to the feeding device for production of the spraying rapid-hardening rubber asphalt waterproof coating, viscous components in sufficient proportion can be rapidly added into the reaction kettle through heating and pressurizing, and the viscous components can be synchronously mixed and reacted with other components, so that the production quality of the spraying rapid-hardening rubber asphalt waterproof coating is ensured.

The invention discloses low-viscosity modified rubber asphalt. The low-viscosity modified rubber asphalt is prepared from the following raw materials in parts by weight: 78 to 85 parts of modified asphalt, 10 to 17 parts of activated rubber powder, 12 to 15 parts of styrene-butadiene-styrene block copolymer and 12 to 15 parts of softening oil. Hydrogen peroxide, ferrous sulfate, polyvinylpyrrolidone and microwave radiation are combined to activate waste tire rubber powder, so that vulcanized rubber on the surface of the rubber powder is depolymerized, the adhesion and compatibility of the rubber powder and a matrix are improved, and the rubber powder can be uniformly dispersed in asphalt molecules, adsorb light components in the asphalt molecules and swell to form a bonding structure; the matrix asphalt is modified by expanded graphite, tetrabutyl titanate, glacial acetic acid and silicone oil, so that the thermal stability of the asphalt can be improved, and the smoke release can be reduced. After the modification reaction, the finally prepared modified rubber asphalt has the characteristics of low viscosity, low odor and high thermal stability.

The invention relates to the technical field of asphalt pavement materials, and provides a preparation method of low-temperature rubber composite modified asphalt, which comprises the following steps: modifying matrix asphalt, adding vulcanized rubber powder, a network building agent and a cross-linking agent, uniformly stirring, and shearing at a high speed; carrying out swelling development after shearing is completed, then adding a plasticizer, and uniformly stirring to obtain rubber modified asphalt; and adding the premixed composite warm mixing agent into the rubber modified asphalt, and shearing to obtain the warm mixing type rubber composite modified asphalt. By combining a dual viscosity reduction mechanism of porous adsorption of the warm-mixing material A and microcrystalline lubrication of the warm-mixing material B, the mixing amount of the waste rubber is remarkably increased, performance degradation caused by high-temperature desulfurization is avoided, and the technical problem that the construction workability and pavement performance of the warm-mixing rubber asphalt are difficult to consider at the same time is effectively solved.

The invention relates to the technical field of waterproof coatings, in particular to a photo-initiation cold coating type non-curing rubber asphalt waterproof coating and a preparation method thereof, and the photo-initiation cold coating type non-curing rubber asphalt waterproof coating comprises an asphalt-based main material, a photo-curing agent and epoxy resin; the light curing agent is composed of a photoinitiator, a rubber monomer and a hindered amine light stabilizer, and the photoinitiator comprises a benzothiophene compound; the waterproof coating is in a single-component paste state, can be constructed at normal temperature, and is cured to form a waterproof coating film after being irradiated by ultraviolet rays; according to the technical scheme, a cross-linking system of the light curing agent and the epoxy resin not only keeps the creep deformation and self-healing characteristics of non-cured rubber asphalt, but also improves the heat resistance, acid, alkali and salt resistance and bonding performance of a coating film through a three-dimensional network cross-linking structure, and it is ensured that a waterproof layer adapts to building structure deformation and severe environments for a long time.

The invention discloses a single-component microcapsule type non-cured rubber asphalt waterproof coating and a preparation method thereof, and belongs to the technical field of waterproof coatings, and the single-component microcapsule type non-cured rubber asphalt waterproof coating is mainly composed of an asphalt component and a microcapsule component. The asphalt component is composed of 39-49% of asphalt, 1% of rubber oil, 10% of a modifier (composed of 4% of styrene butadiene rubber, 4% of paraffin powder and 2% of styrene-butadiene-styrene), 8% of soybean oil, 22-32% of talcum powder and heavy calcium carbonate filler (in a ratio of 1: 1), 4% of carbamate and 6% of a polyamide curing agent. The microcapsule component takes epoxy resin, glass fiber and mica powder as core materials, and the capsule wall is obtained by reacting ethyl methacrylate, methyl methacrylate, an initiator and a dispersing agent at a constant temperature of 80 DEG C. According to the application, direct spraying at normal temperature in the spraying process can be realized, the labor cost is reduced, the problem of uneven spraying is solved, and the long-term durability of the waterproof coating can be improved due to the slow release effect of the capsule.

The invention relates to the technical field of rubber asphalt, in particular to low-viscosity composite rubber asphalt. The low-viscosity composite rubber asphalt is prepared from the following raw materials in parts by weight: 80-100 parts of matrix asphalt, 20-30 parts of tire rubber powder, 10-15 parts of an additive, 8-10 parts of a gelatinization material, 8-10 parts of petroleum resin, 2-4 parts of a stabilizer and 2-4 parts of an activating agent, according to the invention, the bamboo material after carbonization treatment has a high ignition point and can be stably used after addition preparation and asphalt laying, the number of micropores in bamboo fibers is increased after carbonization, and after the bamboo material is added into the preparation process of rubber asphalt, the excellent thermal radiation performance and rich pore structure of carbonized bamboo powder are utilized to improve the thermal radiation performance of the rubber asphalt. The high-temperature-resistant rubber asphalt can effectively transfer heat to the surrounding environment in a radiation mode, meanwhile, abundant pores can help heat dissipation, the high-temperature-resistant performance of the rubber asphalt is improved, and the situation that the rubber asphalt is softened in the high-temperature environment and influences the bearing capacity of a road surface is avoided.

The invention provides zinc diricinoleate and organic nano-montmorillonite odor-removing smoke-suppressing rubber asphalt and a preparation method thereof.The asphalt comprises petroleum asphalt, waste tire rubber powder, zinc diricinoleate, organic nano-montmorillonite, a stabilizer and furfural extract oil, and is prepared according to the following steps that 1, the petroleum asphalt is heated, and the mixture is stirred to be uniform; adding furfural extract oil, heating, mixing and shearing; (2) adding waste tire rubber powder, heating, mixing and shearing; (3) adding organic nano montmorillonite, heating, mixing and shearing; (4) adding zinc diricinoleate for heating, mixing and shearing; and (5) adding a stabilizer, heating, mixing and stirring. According to the invention, the organic nano montmorillonite and zinc diricinoleate are combined according to a certain proportion and are doped into the rubber asphalt, so that the smoke can be inhibited, and meanwhile, the foul odor can be reduced; the zinc diricinoleate can also reduce the viscosity problem caused by the organic nano montmorillonite, so that the rubber asphalt has better construction workability.

The invention discloses a preparation process of an exposed rubber asphalt waterproof coating, relates to the technical field of waterproof coatings, and provides a method for introducing a polyurethane prepolymer HS-PU containing dynamic disulfide bonds into a base material system in order to solve the problems that a traditional coating is poor in elastic recovery after being cured and easy to crack at low temperature; the preparation method comprises the following steps: carrying out condensation polymerization on 4, 4 '-diaminodiphenyl disulfide and polytetrahydrofuran glycol to form a reversible cross-linked network; a temperature response type topological structure is constructed in a dynamic curing stage by combining the synergistic ratio of the anionic emulsified asphalt and the SBR emulsion; the preparation method comprises the following steps: preparing an HS-PU prepolymer, mixing base materials, carrying out gradient temperature control curing and carrying out low-temperature grinding, the elastic recovery rate of the obtained coating at-30 DEG C is greater than or equal to 75%; the method is suitable for metal roofs, bridges and other large-temperature-difference scenes.

The application belongs to the technical field of underground garage civil air defense area raft slab, and particularly relates to a waterproof structure and construction method of an underground garage civil air defense area raft slab of a large urban complex, which comprises a raft slab body, wherein the raft slab body comprises a soil base layer, a waterproof layer, a waterproof protection layer, a steel mesh layer and a concrete layer, the upper surface of the raft slab body is fixedly connected with a civil air defense frame wall, and the front of the civil air defense frame wall is provided with a civil air defense door. The waterproof sealing plate, the water stop ring and the non-solidified rubber asphalt are arranged, the bottom end of the supporting steel pipe can be sealed by the waterproof sealing plate, the water seepage path and the immersion resistance of the supporting steel pipe are increased by the water stop ring, the water seepage resistance of the supporting steel pipe is increased, the waterproof performance of the supporting steel pipe is increased, the sealing property of the supporting steel pipe is increased by the non-solidified rubber asphalt, the water seepage liquid can be effectively prevented from entering the supporting steel pipe, the corrosion of the supporting steel pipe is effectively solved, and the safe and stable use of the civil air defense door is facilitated.

The invention discloses a pavement performance detection device and method for a rubber asphalt stress absorbing layer, the pavement performance detection device comprises a bottom box, an arch-shaped shell is mounted at the top of the bottom box, and a performance detection mechanism is arranged between the interior of the bottom box and the arch-shaped shell to realize clamping tensile detection of the rubber asphalt stress absorbing layer, and the invention relates to the technical field of performance detection. According to the pavement performance detection device and method for the rubber asphalt stress absorbing layer, the performance detection mechanism is arranged, a product is clamped by utilizing the combination of an upper clamping part and a lower clamping part, and the product is kept in the center before being subjected to tensile detection by virtue of the arrangement of a centering unit and a supporting unit; according to the utility model, the stress at each part is consistent during product detection, so that the subsequent detection result is more accurate, the vertical state is kept, the more accurate stretching operation is completed, and the performance detection precision and efficiency are improved.

The utility model discloses a quick-hardening rubber asphalt spraying device, belongs to the technical field of spraying devices, and solves the problems that in the prior art, a hand-held spray gun is needed for spraying, the deviation of the moving speed and the spraying angle of the hand-held spray gun is too large, and the spraying uniformity is influenced. The device comprises a barrel A, a barrel B, a pipe A and a pipe B which are respectively connected with the barrel A and the barrel B, a spray gun which is respectively connected with the pipe A and the pipe B, and a support frame which is used for supporting the spray gun and is matched with the spray gun in a rotating manner, the supporting frame comprises a movable frame, two longitudinal supporting rods arranged on the movable frame, a transverse supporting rod arranged on the two longitudinal supporting rods and a rotating piece arranged on the transverse supporting rod and used for clamping the spray gun. The quick-setting rubber asphalt spraying device is used for spraying quick-setting rubber asphalt.

The invention discloses a foamed rubber asphalt formula determination method. The method comprises the following steps: S1, constructing a molecular model of a foamed rubber asphalt composite system; s2, performing molecular dynamics simulation on the molecular model to obtain a balanced stable structure configuration; s3, based on the stable structure configuration, under the conditions of different rubber mixing amounts, foaming medium mixing amounts and temperatures, calculating the shear modulus, interface adhesion work and fracture energy of the foam rubber asphalt system; and S4, performing multi-objective optimization by taking the shear modulus, the interface adhesion work and the fracture energy as performance indexes, and determining a combination of the temperature, the foaming medium mixing amount and the rubber mixing amount of the optimal formula of the foamed rubber asphalt. According to the method, the combination of the foaming temperature, the foaming medium mixing amount and the rubber mixing amount is determined through molecular modeling and a multi-objective optimization algorithm, and performance prediction and parameter optimization of the foamed rubber asphalt are achieved.

Aiming at the problems that the molecular weight of the existing SBS modified asphalt is broken and the rubber powder of the rubber asphalt is unstable to degrade, the composite modified asphalt binder with a dense molecular structure is prepared by a three-step method of constructing a'molecular grading template ', optimizing a rubber powder analysis process and filling vacancy molecules. The process comprises the following steps: determining an asphalt molecular weight distribution template by taking the optimal rheological property as a target, and regulating and controlling the rubber powder analysis temperature (180-220 DEG C), the time (3-6 hours) and the stirring speed (500-1500 r / min) to ensure that the molecular weight distribution overlapping degree of a rubber powder analysis system and the template is greater than or equal to 85%; and finally, filling corresponding prototype compounds (such as styrene-butadiene block copolymers, antioxidants and the like) according to molecular vacancy types of an analysis system and the template to form a dense molecular structure. The prepared binder is continuous and stable in molecular weight distribution, the high-temperature anti-rutting factor is improved by 40% or above, the anti-aging performance is improved by 30%, the binder is suitable for a highway surface layer with the service life of 30 years, and the service life of a pavement can be remarkably prolonged.

The utility model relates to the technical field of buildings, and discloses a waterproof structure at the junction of an inverted roof and a wall body, which is characterized in that a roof floor is provided with a reinforced concrete floor, a rubber asphalt waterproof coating layer, a modified asphalt waterproof roll layer, an extruded polystyrene board layer and a reinforced fine aggregate concrete layer from bottom to top; a modified asphalt waterproof coiled material layer, a vertical protection masonry and a steel wire mesh cement mortar layer are arranged on the outer wall of the roof from the wall body to the wall surface; the modified asphalt waterproof coiled material layer is integrally formed by upturning and laying from the roof to the wall surface; the vertical protection masonry is built into a slope forming a 15-degree angle with the vertical face, and the two ends of a steel wire mesh in the steel wire mesh cement mortar layer are provided with fixing nails to be fixed to an outer wall and a floor. According to the characteristics of a building structure and an inverted roof structure at the joint of the roof and the outer wall and the joint of the roof and the parapet wall, the waterproof layer and the protective layer are specifically designed in a material and installation mode, connection and fixation of all layers of materials at the joint of the roof and the wall body are fully considered, and the waterproof effect is ensured.

The utility model relates to a tunnel noise-reducing and flame-retardant pavement structure, which aims to solve the problems of high noise and poor flame-retardant property of the conventional tunnel pavement. The tunnel noise-reduction and flame-retardant pavement structure sequentially comprises an upper surface layer, a middle surface layer, a lower surface layer, a base layer, a subbase layer, a stress absorption layer and a tunnel inverted arch from top to bottom, thermal spraying type modified asphalt is adopted between the upper surface layer and the middle surface layer to serve as a first bonding layer, and thermal spraying type modified asphalt is adopted between the middle surface layer and the lower surface layer to serve as a second bonding layer. A broken stone sealing layer is adopted between the lower surface layer and the base layer as a third bonding layer; wherein the upper surface layer is made of a macroporous asphalt mixture doped with a flame retardant, the middle surface layer is made of an asphalt mixture of SBS modified asphalt, and the lower surface layer is made of a rubber asphalt mixture. According to the tunnel noise-reducing and flame-retardant pavement structure, the fire retardant is doped in the surface layer, the ignition point of the pavement is improved, and the pavement surface layer adopts the macroporous asphalt mixture, so that the driving noise of the pavement is reduced, and the influence on driving and pedestrians is reduced.

This invention relates to a stable and durable high-content waste tire rubber powder modified asphalt, its mixture, and a preparation method. The raw materials, by weight percentage, are: 100 parts base asphalt; 40-50 parts waste tire rubber powder; 5-7 parts viscosity reducer; 0.1-0.8 parts crosslinking agent; and 1-2 parts reinforcing agent. The crosslinking agent is ABS, and the viscosity reducer is at least one selected from naphthenic rubber oil, alkane rubber oil, aromatic rubber oil, and polycyclic aromatic rubber oil. In the mixture, 40-mesh and 200-mesh waste tire rubber powder are added. The combination of rubber powder with different particle sizes replaces aggregate and filler in equal amounts, and forms a combination with some incompletely swollen rubber powder in the modified asphalt, achieving stable gradation. This high-content waste tire rubber powder modified asphalt not only significantly increases the waste tire rubber powder content but also exhibits good product stability and can be stored for a longer period. The stability and durability of its modified asphalt mixture are significantly improved, further enhancing the road performance of rubber asphalt and extending the service life of the pavement.

The utility model relates to the technical field of roofs, and discloses a novel assembly type waterproof heat preservation roof which is characterized in that non-cured rubber asphalt waterproof paint is arranged on a roof structural plate; the tire-free self-adhesive waterproof coiled material is arranged on the non-cured rubber asphalt waterproof coating; the double-layer PIR insulation board is arranged on the tire-free self-adhesive waterproof coiled material; the TPO polymer waterproof coiled material is arranged on the double-layer PIR insulation board; the sand cement layer is arranged on the TPO polymer waterproof coiled material; the roof decorative bricks and the pebbles are arranged on the sand-lime layer; the rod body I is arranged on the roof decoration brick through the mounting seat; the first fixing hole is formed in the first rod body; the second rod body is arranged on the first rod body in a sliding mode, a plurality of second fixing holes are formed in the second rod body, and the first fixing holes and the second fixing holes are fixedly connected through bolts and nuts; the rainproof shed is rotationally arranged on the second rod body through a connecting piece. All the components are matched, and the problem that an original roof structure needs to be integrally renovated during maintenance is solved.

The invention relates to the technical field of road materials, in particular to environment-friendly rubber modified asphalt as well as a preparation method and application thereof. The environment-friendly rubber modified asphalt is prepared from the following components in parts by mass: 100 parts of matrix asphalt; 1-5 parts of softening oil; the softening oil comprises aromatic oil, oleic acid, furfural extract oil and wax oil; 15 to 30 parts of micro-nano rubber particles; the micro-nano rubber particles are obtained from desulfurized and activated reclaimed rubber; 0.1 to 0.3 part of a stabilizing agent; and 0-3 parts of a high-molecular polymer. Compared with common rubber modified asphalt, the environment-friendly rubber modified asphalt disclosed by the invention has higher viscosity, excellent low-temperature performance and high-temperature performance, a stable system and environment-friendly construction environment, and the odor in the construction process is greatly reduced. The environment-friendly rubber asphalt is prepared by adopting an environment-friendly rubber particle wet method, the preparation process is simple, high-standard modified asphalt can be obtained through one-time feeding and a colloid mill, and the production cost is saved.

The invention relates to the technical field of rubber asphalt production equipment, in particular to rubber powder combined activation equipment, which comprises double-screw extrusion equipment, a guide pipe, a discharge pipe and a feed pipe arranged on the guide pipe, and further comprises a first shaft, a second shaft, a third shaft, a fourth shaft, a fifth shaft, a sixth shaft, a fifth shaft, a sixth shaft, a fifth shaft and a sixth shaft, the first shaft is rotationally arranged on the guide pipe, and one end of the first shaft is positioned in the guide pipe and is fixedly connected with a spiral feeding blade; when the pressure in the material guiding pipe is larger than a certain value, a piston plate is pushed to move relative to a sliding plate, so that a linkage assembly is driven to be connected with a first shaft, the first shaft rotates to drive the piston plate to move so as to enlarge an inner cavity of the material guiding pipe, the pressure in the material guiding pipe is automatically reduced in time, a driving motor is protected, meanwhile, it is guaranteed that the feeding pressure is stable, and production efficiency is improved. After the piston plate continuously moves for a certain distance, the pressure in the material guide pipe is also increased, at the moment, the delayed transmission assembly is used for driving the sixth fluted disc to be meshed with the fourth fluted disc, then the rotating speed of the first shaft is greatly reduced, and the pressure in the material guide pipe is further reduced.