387 results about "Bitumen emulsion" patented technology

The invention relates to the field of performance testing of road engineering materials, and discloses an emulsified asphalt in-situ cold-recycled mixture high-temperature creep test method which comprises the following steps: preparing a test piece: presetting an old material-emulsified asphalt standard test piece, and embedding a moisture regulation and control device to generate a controllable gradient; multi-field loading: coupling an unsteady-state temperature field, a moisture gradient field and a time-varying attenuation stress field to construct a composite loading environment; synchronously aligning data: synchronously acquiring macro strain and micropore data, and realizing cross-scale alignment through a space-time matrix; performing parameter inversion: inverting nonlinear constitutive parameters by combining macro and micro data, and constraining a solution space by using a thermodynamic equation; and intelligent termination output: triggering a termination mechanism based on a multi-dimensional criterion and outputting damage evolution data. Through multi-field coupling loading, cross-scale data fusion and intelligent criterion cooperation, the problems of traditional test environment distortion, parameter deviation and criterion lag are solved, and accurate analysis of the high-temperature creep behavior of the emulsified asphalt reclaimed material and reliable prediction of the performance degradation law are achieved.

The invention belongs to the technical field of asphalt pavement repairing, and particularly relates to a local repairing technology of an asphalt pavement, which comprises the following specific contents: detecting a disease range by adopting ground three-dimensional laser scanning or ground penetrating radar, determining a repairing boundary, sampling and detecting the aging degree, the moisture content and the grading type of the asphalt of the original pavement, and determining the repairing quality of the asphalt pavement. According to the method, the bonding strength of the repairing material and the asphalt layer of the original pavement is enhanced by heating and activating the interface of the original pavement and emulsifying the asphalt bonding layer, and matching the repairing material with the shrinkage coefficient of the original pavement and reinforcing and compacting the edge, so that the condition that the repaired position is cracked, loosened and damaged in a short time is avoided; warm-mixed asphalt is adopted, the heating temperature is reduced by 40-60 DEG C, cold-mixed emulsified asphalt is popularized, and the asphalt does not need to be heated, so that release of a large amount of volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs) and dust is effectively avoided, and air pollution is avoided.

The invention provides a three-order angular distance extraction-based emulsified asphalt polymer distribution uniformity evaluation method, which comprises the following steps of: acquiring a fluorescent microphotograph of an emulsified asphalt polymer modified sample, carrying out RGB three-channel separation, constructing a joint probability matrix with a gray vector on polar coordinates, and simultaneously carrying out normalization processing; and further calculating a first-order angular moment, a second-order angular moment and a third-order angular moment of the fluorescent microscopic image of the emulsified asphalt polymer modified sample according to the joint probability matrix of the gray vector, and evaluating the distribution uniformity of the polymer in the emulsified asphalt matrix. The method can accurately quantify the distribution uniformity of the polymer in the emulsified asphalt, is small in test sampling amount and high in test speed, can be widely applied to quality detection of the emulsified asphalt in road engineering construction and maintenance, and provides an effective technical means for improving the modification effect of the polymer of the emulsified asphalt and guiding optimization of a preparation process of the emulsified asphalt.

The invention relates to the technical field of building construction, in particular to an emulsified asphalt mixture paving device which comprises a moving mechanism. The device further comprises a paving mechanism and a conveying mechanism, and the paving mechanism and the conveying mechanism are both installed on the moving mechanism. The conveying mechanism is used for conveying an emulsified asphalt mixture, and the paving mechanism is used for paving the emulsified asphalt mixture; the positions of the conveying mechanism and the paving mechanism are adjusted through the moving mechanism, so that the conveying mechanism discharges an emulsified asphalt mixture to the top of a tunnel, and meanwhile, the emulsified asphalt mixture is uniformly paved on the top of the tunnel through the paving mechanism, so that the practicability of the equipment is improved.

The invention discloses a method for determining the demulsification speed of emulsified asphalt, and relates to the technical field of online detection and intelligent monitoring of road engineering materials, and by integrating a lightweight time sequence prediction model and a self-adaptive processing mechanism, the practicability and reliability of the determination of the demulsification speed of the emulsified asphalt are remarkably improved; in the aspect of portability, an edge model based on a gating circulation unit structure is adopted, so that the dependence on computing resources is reduced, the method can be operated on handheld equipment, the problem that traditional laboratory equipment is heavy is avoided, and construction personnel can conveniently and quickly deploy the equipment on site; the real-time performance is enhanced, the adaptive sliding window dynamically adjusts the window length and step length according to the data stability to ensure that the inference frequency is matched with the demulsification process, and the model can immediately respond to environmental changes such as temperature fluctuation and output a demulsification speed estimated value without obvious delay in combination with an online learning mechanism, so that the paving and compacting opportunities are guided; and construction interruption is reduced.

The invention discloses an epoxy resin modified emulsified asphalt micro-surfacing mixture and a preparation method thereof.The preparation method comprises the steps that matrix asphalt is subjected to gradient heating to 75-90 DEG C, nano silicon dioxide is added, stirring and shearing are conducted, and activated matrix asphalt is obtained; preparing a water-borne epoxy resin emulsion with the solid content of 45-50%, and controlling the mass ratio of epoxy resin to an emulsifier to be (8-10): 1 to form a stable dispersion system with the particle size of less than or equal to 1 mu m; preheating the mineral aggregate, adding the activated matrix asphalt while stirring, and continuing stirring; adding the water-borne epoxy resin emulsion, and continuously stirring; adding a vinylamine curing agent, continuously stirring to ensure that the curing agent is uniformly dispersed and avoid partial incomplete reaction, finally adding cement and water, and continuously stirring to form a uniform micro-surfacing mixture. The pavement performance such as high-temperature stability, low-temperature crack resistance and the like is remarkably improved through raw material system upgrading and process innovation, VOCs emission is greatly reduced, and green and environment-friendly effects are achieved.

The utility model provides an emulsified asphalt heating device which comprises an air heater, a tank body and a heating unit, the air heater introduces hot air into an air inlet pipe, and heat is uniformly transferred to emulsified asphalt through a coil pipe. A stirring assembly in the device is composed of a sleeve, a plurality of stirrers, arc-shaped fan blades, a guide cylinder and the like, and the stirrers are driven to rotate under the action of airflow, so that emulsified asphalt is effectively stirred, and layering is avoided. By optimizing the structural design of the coil pipe and the airflow channel, hot air can be uniformly distributed, the heating process of emulsified asphalt is accelerated, and meanwhile, the heating efficiency is improved. Due to the design of the stirring assembly, the emulsified asphalt is always kept uniform in the heating process, and the defects of non-uniform heating and insufficient stirring possibly occurring in a traditional heating device are overcome. In addition, the device can reduce energy waste and achieve an energy-saving effect by accurately controlling the gas flow and the stirring force. The device has the advantages of reasonable structure, simplicity and convenience in operation and good heating and stirring effects.

The invention discloses an early strength type modified emulsified asphalt mixture and a preparation method thereof, the content of each substance in the asphalt mixture is as follows: 70-80 wt% of aggregate, 8-12 wt% of SBS modified emulsified asphalt, 8-10 wt% of an early strength agent and 4-8 wt% of mineral powder, the addition amount of the early strength agent is increased along with the increase of the addition amount of the SBS modified emulsified asphalt, and the addition amount of the mineral powder is increased along with the increase of the addition amount of the SBS modified emulsified asphalt. When the addition amount of the SBS modified emulsified asphalt is increased by 1 wt%, the addition amount of the early strength agent is correspondingly increased by 0.4-0.6 wt%. The preparation method comprises the following steps: preparing SBS modified asphalt and preserving heat for later use; preparing SBS modified emulsified asphalt, and sealing and storing; preparing an early strength agent and storing at normal temperature for later use; the aggregate, the early strength agent and the mineral powder are put into a mixing pot to be stirred; and adding the SBS modified emulsified asphalt into the mixing pot, and continuously stirring to obtain the early-strength modified emulsified asphalt mixture. The emulsified asphalt mixture prepared by the invention has the advantages of high initial strength, quick strength increase, good pavement performance and the like, can be used for paving an upper surface layer of a high-grade pavement, and can quickly open traffic after paving.

The invention relates to the technical field of asphalt pavement preventability, in particular to a water-based epoxy emulsified asphalt high-skid-resistance thin layer structure and a construction method thereof, and the structure sequentially comprises a water-based epoxy emulsified asphalt waterproof bonding layer and a water-based epoxy emulsified asphalt high-skid-resistance thin layer from bottom to top. And the waterproof bonding layer is formed by mixing emulsified asphalt and water-borne epoxy resin, demulsifying and curing. The high-skid-resistance thin layer is formed by mixing, paving, rolling and curing a wear-resistant aggregate and a water-based epoxy emulsified asphalt cementing material, the cementing material is demulsified and cured to form a three-dimensional cross-linked network structure, and the wear-resistant aggregate is embedded into the cementing material in a point contact manner and partially protrudes out of the surface of the cementing material. Compared with the prior art, the two-layer structure forms chemical bonding and synergistic enhancement through a three-dimensional cross-linked network of epoxy resin, has excellent surface skid resistance, water stability and durability, can effectively solve the problem of insufficient skid resistance of an asphalt pavement, remarkably improves the driving safety, and adopts normal-temperature construction.

The invention discloses an emulsified asphalt and steel slag ultrathin overlay mixture as well as a preparation method and application thereof, and relates to the technical field of road building materials. The emulsified asphalt and steel slag ultrathin overlay mixture comprises mineral aggregate, emulsified asphalt and cement, the mineral aggregate comprises 30%-35% of modified steel slag aggregate with the particle size of 5-10 mm, 60%-70% of limestone aggregate with the particle size of 0-5 mm and 1%-3% of limestone mineral powder; the preparation method of the modified steel slag comprises the following steps: primarily treating the steel slag with CO2 gas, soaking with cement slurry, soaking with a sulfydryl silane coupling agent, spraying the surface with methyl phenyl silicone resin to enable the steel slag to obtain hydrophobic coating, and finally spraying epoxidized soybean oil. By modifying the steel slag and optimizing mineral aggregate gradation, the ultrathin overlay prepared from the mixture is durable, anti-slip, anti-crack and waterproof, stable in structure and high in overall cohesive force.

The invention relates to the technical field of pavement materials, and particularly discloses an all-solid waste asphalt mixture as well as a preparation method and application thereof. The all-solid waste asphalt mixture is prepared from the following raw material components: activated waste rubber powder, waste rubber powder modified emulsified asphalt, a waste asphalt-based pavement material, aggregate, a fiber material and an additive, wherein the aggregate comprises coal gangue powder, waste magnesia carbon brick powder, nut shell powder, coarse aggregate, steel slag powder and fine aggregate; the fiber material comprises activated aramid fiber and waste rubber powder modified glass fiber reinforced plastic fiber; the additive comprises a smoke suppression viscosity reducer and a styrene-butadiene-styrene block copolymer. The all-solid waste asphalt mixture with excellent pavement performance is prepared by utilizing the synergistic effect of all the component raw materials, and the problem that the pavement performance of an asphalt regenerated mixture is poor due to the fact that existing solid waste is poor in compatibility with other components when being applied to the asphalt regenerated mixture is effectively solved.

The invention belongs to the technical field of emulsified asphalt materials, and particularly relates to a water-resistant emulsified asphalt mixture based on epoxy resin as well as preparation and test methods thereof, and the water-resistant emulsified asphalt mixture comprises the following components in parts by weight: 90-95 parts of aggregate, 3-5 parts of early strength agent, 1-2 parts of water, 2-3 parts of mineral powder and 10-15 parts of modified emulsified asphalt, the modified emulsified asphalt comprises the following components in parts by weight: 45-55 parts of modified asphalt, 3-8 parts of an emulsifier, 20-25 parts of epoxy resin and 15-22 parts of water, wherein the modified asphalt comprises the following components in parts by weight: 80-100 parts of matrix asphalt, 3-5 parts of SBR (Styrene Butadiene Rubber), 2-5 parts of petroleum resin, 1-2 parts of a toughening agent and 5-10 parts of a composite curing agent. Through step-by-step preparation, the mixture has very good low-temperature toughness and mechanical properties, and the water resistance of the material can be improved, so that the emulsified asphalt mixture is applied to a surface layer of an asphalt pavement, and the application scene of the emulsified asphalt mixture is widened.

The invention discloses a preparation method of interface-enhanced special emulsified asphalt, which comprises the following steps: taking raw materials such as matrix asphalt, a nano polymer interface enhancer, a modifier and the like in parts by weight, carrying out surface modification by the nano polymer interface enhancer, modifying the matrix asphalt, preparing an emulsified aqueous solution, and mixing the modified enhancer with the emulsified aqueous solution, thereby obtaining the interface-enhanced special emulsified asphalt. And applying a pulsed magnetic field and emulsifying by a colloid mill while mixing to obtain a finished product. Compared with the prior art, the method has the advantages that the interface bonding force is improved through nanometer material surface modification and pulsed magnetic field induced arrangement, the high-temperature performance is improved through the phase change material and the modifier, construction damage is reduced by means of the self-repairing microcapsules, and the method has the advantages of being high in bonding strength, good in high-temperature stability, resistant to construction pollution and the like; the problems that traditional emulsified asphalt is low in bonding strength, poor in high-temperature performance, prone to being damaged during construction and the like can be effectively solved, pollution and damage in the construction process are avoided, and the construction quality is improved.

The invention provides a polymer cationic asphalt emulsifier as well as a preparation method and application thereof. According to the preparation method of the polymer cationic asphalt emulsifier, three monomers including 9-octadecenoic acid methyl ester, maleic anhydride and p-vinyltoluene are utilized to react to obtain the polymer cationic asphalt emulsifier. Based on a free radical polymerization technology, various functional groups (long-chain alkyl, a methyl styrene chain, imidazoline and the like) are integrated into a single polymer skeleton, so that the interfacial activity of an emulsifier is expected to be improved, the stability and the use performance of emulsified asphalt are improved, high efficiency and economical efficiency are achieved, and the development trend of green road materials is met. Compared with a traditional asphalt emulsifier, the polymer cationic asphalt emulsifier has higher surface activity and excellent high and low temperature stability.

The invention relates to the field of road engineering material detection, in particular to a method for obtaining emulsified asphalt residues and measuring the content through medium and low temperature evaporation. Comprising the following steps: providing an evaporation container assembly containing an emulsified asphalt sample with preset mass, and sequentially weighing the mass of the evaporation container assembly before and after containing; placing the evaporation container assembly and the contents thereof in an environment of 130-140 DEG C for heat preservation for 80-100 min, and stirring the contents at least once in the heat preservation stage; transferring the evaporation container assembly and the contents thereof to an environment at 60-70 DEG C, and preserving heat for 230-250 minutes to obtain emulsified asphalt evaporation residues; and after cooling, weighing the total mass of the evaporation container assembly and the contents of the evaporation container assembly, and calculating the content of the emulsified asphalt evaporation residues. The method overcomes the problems of asphalt aging distortion caused by high temperature in the traditional method and low efficiency, poor accuracy and poor repeatability in the existing medium and low temperature method.

Disclosed in the present invention are a raw material composition for a steel slag-asphalt mixture, and a steel slag-asphalt mixture and the preparation and use thereof. The raw material composition for a steel slag-asphalt mixture comprises the following components in parts by mass: 100 parts of steel slag, 2-8 parts of a steel slag modifier, 20-40 parts of modified emulsified asphalt, and 3-8 parts of a surfactant, wherein the modified emulsified asphalt comprises the following components in parts by mass: 100 parts of matrix asphalt, 15-20 parts of EVA, 0.08-0.5 parts of a stabilizer, 1.5-5 parts of an emulsifier, and 0.5-2 parts of a defoaming agent. The operable time of the steel slag-asphalt mixture of the present invention is greatly prolonged; moreover, the curing time is shortened, and the strength after curing is maintained.

The invention discloses a fiber-reinforced asphalt mixture and a preparation method thereof, and relates to the technical field of asphalt. The asphalt mixture is prepared from the following raw materials in parts by mass: 65 to 75 parts of coarse aggregate, 25 to 35 parts of fine aggregate, 8 to 12 parts of asphalt, 10 to 15 parts of reinforced fiber, 0.01 to 0.02 part of initiator and 1 to 2 parts of silane coupling agent, the reinforced fibers comprise modified coconut fibers and modified polyester fibers; the preparation method of the asphalt mixture comprises the following steps: step 1, carrying out pre-emulsification treatment on asphalt to obtain pre-emulsified asphalt; (2) uniformly mixing the modified coconut fibers and the modified polyester fibers to obtain reinforced fibers; 2, sequentially adding coarse aggregate, fine aggregate, reinforced fibers, an initiator and a silane coupling agent into the pre-emulsified asphalt, and uniformly stirring to obtain an asphalt mixture; the prepared fiber reinforced asphalt is high in strength and good in aging resistance and has excellent comprehensive performance.

The invention provides emulsified asphalt, an emulsified asphalt cold recycled mixture and a preparation method thereof, and the emulsified asphalt comprises the following components in percentage by mass: 40%-55% of matrix asphalt, 5%-20% of a modifier, 10%-15% of an emulsifier and 25%-30% of water, the modifier is selected from any one of atactic polypropylene, terpene resin, epoxy resin, rubber resin and modified polyurethane prepolymer; the modified polyurethane prepolymer is obtained by modifying a polyurethane prepolymer through cashew nut shell liquid and vanillin. The cashew nut shell liquid and the vanillin are used for modifying the prepolymer, and a composite system with rigidity (benzene ring), flexibility (aliphatic chain) and a cross-linked network (polyurethane) is formed; the mechanical property, water damage resistance and the like of the prepared high-performance emulsified asphalt are greatly improved, the early-stage wear resistance, pavement performance and fatigue resistance of a cold recycled mixture can be remarkably improved, and the service life of a pavement is effectively prolonged.

This invention relates to the field of waterproof coating technology, and more particularly to a rare earth tailings-modified emulsified asphalt grouting material and its application. The asphalt grouting material comprises a modified emulsified asphalt composition, which includes asphalt and modifying components; the modifying components include SBR emulsion, rare earth tailings, and a coupling agent; by weight, the asphalt is 300-1200 parts, the SBR emulsion is 75-250 parts, and the rare earth tailings are 3-24 parts. This invention uses rare earth tailings to modify the emulsified asphalt, resulting in modified emulsified asphalt that can better deposit on the interface during the demulsification stage, exhibiting higher interfacial adhesion and water resistance. This has significant application value in the field of emulsified asphalt grouting materials.

This invention provides a construction method for improving the drainage capacity of road structures, relating to the field of drainage function technology for the renovation and upgrading of old roads. It separates water bodies between the upper and lower structural layers and the original ground surfaces on both sides of the road structure layer by forming an emulsified asphalt layer and waterproof geotextile. A rapid drainage structure is formed using a concrete pavement crushed stone layer, filled with crushed stone, drainage geogrids, sidewalk rubble, a filter layer, and drainage pipes. This achieves rapid drainage of the road structure, ensuring the stability of the road structure layer in the renovation of old pavements, reducing differential settlement caused by groundwater and other factors, and avoiding disturbance to the road and the resulting reflective cracks. This invention improves the drainage performance at the junction of sidewalks and roads, reducing water disturbance problems.

The application discloses an epoxy asphalt binder and a preparation method thereof, and belongs to the technical field of asphalt preparation, in particular relates to the binder which is composed of modified asphalt, epoxy resin material, compatilizer and anti-aging agent, and the mass ratio of the modified asphalt, the epoxy resin material, the compatilizer and the anti-aging agent is 100:15-60:5-10:0.1-0.5.The epoxy asphalt binder prepared by the application has excellent bonding performance and flexibility, in particular, the bonding performance at high temperature is significantly better than that of modified emulsified asphalt or polymer modified asphalt, and the flexibility is better than that of epoxy resin binder.

The invention relates to composite modified high-performance emulsified asphalt and a preparation method thereof. The emulsified asphalt is composed of composite modified asphalt and an emulsifier aqueous solution, the composite modified asphalt is prepared from matrix asphalt, an SEBS modifier, a polyethylene modifier, a compatilizer and an asphalt phase stabilizer in proportion, and the emulsifier aqueous solution is composed of water, a nonionic / cationic composite emulsifier and a water phase stabilizer. Through cooperation of an SEBS elastic phase and a polyethylene rigid phase and limit cross-linking of an asphalt phase stabilizer, evaporation residues of the emulsified asphalt disclosed by the invention have a relatively high softening point, good low-temperature ductility and elastic recovery capability, and have excellent storage stability and construction workability under the action of a compound emulsifier and a water phase stabilizer; the invention is suitable for road prime coat, adhesive layer, seal coat, cold mix mixture and the like.

The utility model relates to an emulsified asphalt vibration mixing vehicle which comprises a vehicle body, and a milling material conveying system, a vibration mixing system and a regenerated material transfer system are arranged on the vehicle body, so that a milling mixture and a new aggregate can be fully stirred and mixed, the uniformity of each material in a regenerated mixture is improved, and the production efficiency is improved. The vibration mixing system comprises a vibration mixing main machine, an emulsified asphalt conveying system, a water supply system and a metering system, the milling mixture and the new aggregate are metered through the metering system and added into the vibration mixing main machine according to the set mixing proportion to be mixed, the integration degree is high, and the working efficiency is high; the recycled material transfer system comprises a transfer conveyor capable of swinging and lifting, a recycled mixture can be conveniently transferred into a subsequent paver, the structure is simple and reliable, the anti-blocking system is further included, an asphalt pipeline at the asphalt pump is heated, the asphalt pump is effectively prevented from being blocked, and the asphalt pump is conveniently cleaned and maintained.

The invention belongs to the technical field of well drilling, and particularly relates to a high-temperature-resistant dispersing type emulsified asphalt anti-collapse agent for oil field well drilling and a preparation method thereof.The preparation method comprises the steps that transformer oil is taken, a system is preheated, molten asphalt is added, an emulsifier and modified silicon dioxide are added after even mixing, and the asphalt is fully emulsified through stirring; and cooling to obtain the product. The modified silicon dioxide is filled with benzene rings, amino groups and alkyl long chains. The high-temperature-resistant dispersing type emulsified asphalt anti-collapse agent for oil field drilling can bridge and seal shale pore throats and microcracks, effectively inhibit pressure transmission, improve rock wall stability and improve filtrate loss reduction capacity.

The invention belongs to the technical field of recycled asphalt production, and particularly relates to an environment-friendly cold-mixing recycled emulsified asphalt production device and a production process, the environment-friendly cold-mixing recycled emulsified asphalt production device comprises a crusher, a screening assembly and an emulsified asphalt stirrer; the screening assembly comprises a screening box, a vibration base is fixed to the bottom of the screening box, a multi-stage screening mechanism is arranged in the screening box and comprises a fixing frame, a screen is installed in the middle of the fixing frame, and a dredging assembly is arranged at the bottom of the multi-stage screening mechanism and used for dredging the screen. The top of the screening box is provided with a driving assembly used for driving the dredging assembly to move. Through the arrangement of the driving assembly and the dredging assembly, the screen is cleaned, and it is avoided that fragments block screen holes, and follow-up use of the screen is affected; and fragments in the meshes of the screen are blown out by high-speed airflow, direct contact with the screen is avoided, abrasion to the screen can be reduced, and the service life of the screen is prolonged.

The application discloses a preparation method of modified lignin sulfonate asphalt emulsifier, and application of products and the asphalt emulsifier. The emulsifier is prepared by the following steps: reacting an amine compound with acrylic acid to generate an amide compound, and then reacting the amide compound with sodium lignin sulfonate and formaldehyde in a solvent to generate the emulsifier. The molar ratio of the amine compound to the acrylic acid is 1:1, the amount of the sodium lignin sulfonate is 40% to 60% of the total mass of the amine compound and the acrylic acid, the amount of the formaldehyde is 14% to 26% of the mass of the sodium lignin sulfonate, and the mass ratio of the solvent to the reactants is (1 to 1.2):(1 to 1.2). The preparation method of the modified lignin sulfonate asphalt emulsifier is simple, the production cost is low, the water solubility is good, the surface activity is strong, the modified lignin sulfonate asphalt emulsifier belongs to a slow cracking type asphalt emulsifier, the emulsified asphalt produced by using the modified lignin sulfonate asphalt emulsifier is fine and uniform, the storage stability is excellent, and the modified lignin sulfonate asphalt emulsifier has a good application prospect in asphalt pavement construction.

The invention discloses high-solid-content polymer compound emulsified asphalt and a preparation method thereof, and belongs to the technical field of road engineering materials. The preparation method comprises the following steps: firstly, modifying matrix asphalt by using SBS; dissolving a cationic emulsifier in water, adjusting the pH value to 2-3 to obtain a soap liquid, and mixing the soap liquid with SBR latex to obtain a composite emulsified soap liquid; and finally, shearing and emulsifying the SBS modified asphalt and the composite emulsified soap liquid through a horizontal colloid mill, adding the defoaming agent and the thickening agent, and uniformly mixing to obtain the SBS modified asphalt. According to the preparation method, the horizontal colloid mill is adopted as emulsifying equipment, process parameters are optimized, the emulsifying problem of the high-viscosity SBS modified asphalt is successfully solved, the solid content of the prepared emulsified asphalt is larger than 65%, and the prepared emulsified asphalt has excellent storage stability and use performance.

The invention belongs to the technical field of asphalt materials, and discloses an activated rubber powder modified cold-mix asphalt mixture and a preparation method thereof.The activated rubber powder modified cold-mix asphalt mixture comprises emulsified asphalt, activated rubber powder, aggregate and filler, and the mass ratio of the activated rubber powder to asphalt components in the emulsified asphalt is (0.10-0.20): 1; wherein the activated rubber powder comprises rubber powder and epoxidized C5 petroleum resin, and the rubber powder and the epoxidized C5 petroleum resin are mixed and activated through microwave irradiation to prepare the activated rubber powder. According to the invention, the problem of insufficient compatibility of rubber powder and asphalt in the cold-mixed mixture is improved, and the obtained mixture has good strength and stability.

The application belongs to the technical field of road engineering construction, and particularly relates to a high-performance anti-rutting pavement base. The base body of the pavement base comprises an upper base body and a lower base body; the material of the upper base body is sand-free large-pore cement concrete, and the material of the lower base body is open-graded large-diameter asphalt mixture; a high-viscosity modified emulsified asphalt-based grouting material is grouted on the base body, thereby forming the high-performance anti-rutting pavement base. The high-performance anti-rutting pavement base has flexibility and rigidity, solves the problem of easy cracking of conventional semi-flexible pavement, effectively avoids diseases such as cracks in the pavement in a short period of time, and greatly prolongs the service life of the pavement.

The invention discloses a water-based polymer cold-mixing crack pouring adhesive for road maintenance, which comprises a component A and a component B. The component A comprises unsaturated water-based epoxy resin, unsaturated rubber modified emulsified asphalt, a filler, an oxidant and an antioxidant, and the component B comprises a reducing agent, a water-based epoxy hardener, an accelerant and unsaturated rubber modified emulsified asphalt. The unsaturated water-borne epoxy resin and the unsaturated rubber modified emulsified asphalt can be cured at room temperature under the action of the oxidizing agent and the reducing agent, and the unsaturated water-borne epoxy resin and the water-borne epoxy curing agent can also be cured at room temperature, so that after the component A and the component B are mixed, a system can be subjected to dual-curing reaction, and the curing effect is good. And forming an interpenetrating network structure. Compared with the traditional crack pouring adhesive, the crack pouring adhesive does not need heating equipment, is low in consumption and can reduce the material cost; due to the excellent adhesion of an epoxy system, the crack pouring adhesive is firmly adhered to the wall surface of a crack, is not easy to debond and crack, and is durable.