46results about How to "Improve water damage resistance" patented technology

The invention discloses an asphalt concrete steel bridge pavement structure comprising a steel bridge (7) derusted by sandblast, an anticorrosive coating (6), a binding layer (5), high-viscosity asphalt embedded compact granular composition concrete bottom layer (3), an oil sticking layer (2) and a high-viscosity asphalt embedded and compact granular composition concrete top layer (1) which are arranged from bottom to top; and furthermore, the invention also provides a pavement method of the asphalt concrete steel bridge pavement structure. According to the asphalt concrete steel bridge pavement structure, the high-viscosity asphalt embedded compact granular composition concrete layers are used as main pavement layers, so that concrete has favorable interlayer binding force and deformation following performance, the generation of cracks can be restrained, so that the whole steel bridge pavement structure has the advantages of favorable track resistance and water seepage resistance.

The invention relates to a composite stabilizer for SBS modified asphalt. The composite stabilizer comprises the following components in parts by mass: 30 to 60 parts of a cross-linking agent, 10 to 40 parts of an accelerator, 10 to 20 parts of an activating agent and 5 to 20 parts of a compatilizer, wherein the cross-linking agent is one or more of sulfur, dithiomorpholine, polyphosphoric acid and maleic anhydride; the accelerator is one or more of tetraethylthiuram disulfide, 2-mercaptobenzothiazole, benzoyl peroxide, dicumyl peroxide and sodium isopropyl xanthate. Compared with the prior art, the composite stabilizer has the advantages that after the composite stabilizer is added into the SBS modified asphalt, the problem that the high-temperature storage stability of the SBS modified asphalt is poor is well solved, the performances such as high-temperature and low-temperature stability and water stability of an asphalt mixture are comprehensively improved, and high-temperature anti-rutting performance, low-temperature anti-cracking performance, moisture damage resistance and ageing resistance are remarkably improved.

The road surface reinforcing asphalt material is one kind of post-added asphalt concrete modifier. It is prepared with PE, PP, POE, antioxidant 1010, stabilizer AT-168 and carbon black and through mixing. The road surface reinforcing asphalt material has wide material source and simple preparation process, and may be stirred and constructed with common asphalt mixer and matched with heavy traffic asphalt. Adding it in small amount of 0.3-0.7 % can raise the road use performance of mixed asphalt material, including strength, high temperature resistance, water resistance, etc. greatly.

The invention relates to the technical field of road engineering, and particularly discloses granular colored asphalt and a preparation method thereof. The colored asphalt comprises the following rawmaterial components in parts by mass: 5-20 parts of C5 petroleum resin, 20-50 parts of C9 petroleum resin, 30-70 parts of aromatic oil, 5-20 parts of styrene-butadiene-styrene block copolymer, 1-5 parts of polyethylene wax, 1-5 parts of styrene-butadiene rubber, 2-8 parts of polyurethane, 30-50 parts of pigment and 1-5 parts of phosphate ester. The colored asphalt provided by the invention is granular, is convenient to transport and use, can be directly added into a mixing cylinder, and is dispersed in a colored asphalt mixture by a shearing action of hot aggregate; and the colored asphalt hasgood adhesion, good high-temperature performance, low-temperature performance and water loss resistance, and can be especially used in occasions such as a high-temperature, large-traffic-volume or water-permeable pavement in the south.

The invention provides a combined assembled cement concrete pavement structure and a construction method, wherein a water barrier layer, a drainage strip and a drainage base layer are laid on the subbase layer, and the drainage strip is connected with the vertical drainage pipe in the prefabricated panel section; A joint end plate, a joint end plate 2 and a squeeze filler body are arranged at thevertical joint of the prefabricated plate section and the cast-in-place joint section, and a limit joint and a flexible joint layer are arranged at the joint of the lower surface, and the upper surface is provided. The deformation coordination plate is disposed, and the tension connecting rib is disposed in the middle; the tension connecting rib of the prefabricated plate segment and the cast-in-place connecting segment is provided with a limiting clip through the two ends of the hole, and the tension connecting rib is connected by the locking bolt; The upper surface of the lower connecting platform of the cast-in-place connecting section is provided with a connecting limit groove, and the bottom is integrally formed with the vertical reinforcing pier. The pavement structure and the construction method provided by the invention can not only improve on-site construction efficiency and construction quality, but also enhance the integrity of the pavement structure and improve the temperature stability and durability of the pavement structure.

The invention discloses a non-ionic surfactant and a preparation method and application thereof. The preparation method of the non-ionic surfactant comprises the following steps: amidation reaction of fatty acid I and polyether amine II with the molar ratio of fatty acid I to polyether amine II of (1:1)-(1:2), wherein R is C7-C17 alkyl and / or C7-C17 alkenyl, and the molecular weight M of the polyether amine II meets that 230 <=M<=2000. The non-ionic surfactant as an asphalt temperature mixing agent is low in mixing temperature, can reduce energy consumption in the asphalt preparation process, and can improve the anti water damage ability of the asphalt.

The invention relates to the technical field of recycled asphalt, and particularly discloses a recycled asphalt mixture and a preparation method thereof.The recycled asphalt mixture is prepared from,by weight, 55-75 parts of new aggregate, 25-45 parts of old asphalt mixture, 1-3 parts of mineral powder, 4-7 parts of new asphalt and 0.08-0.56 part of asphalt regenerant; the asphalt regenerant comprises the following components in parts by weight: 100 parts of a softener, 1-5 parts of an elastomeric polymer, 15-30 parts of linearized active rubber, 0.5-5 parts of a surfactant and 0.5-5 parts ofan anti-stripping agent. By the adoption of the technical scheme, the old asphalt mixture can be added in a large proportion, the performance of the pavement asphalt mixture can still be met, and theproblems that in the prior art, pavement compaction is insufficient, and low-temperature embrittlement is likely to happen are solved.

The invention relates to an environment-friendly colored antiskid pavement capable of melting ice and a preparation method of the environment-friendly colored antiskid pavement. The method comprises the following steps: firstly, repairing and sweeping the pavement; then paving an environment-friendly colored antiskid pavement adhesive, and spreading colored ceramic particles on the adhesive; and after the adhesive is cured, spraying an environment-friendly colored antiskid pavement surface layer protective agent, and spreading potassium acetate particles within 3-5 minutes after spraying. The environment-friendly colored antiskid pavement adhesive is toughened and modified by polyurethane, the elongation at break and the shear strength have better matching property, and the crack resistance and the fatigue resistance of a paved colored antiskid pavement are remarkably improved. By using the surface layer protective agent, the anti-stripping capability of the ceramic particles of the colored anti-skid pavement is effectively improved, and the water damage resistance of the environment-friendly colored anti-skid pavement is further improved. The potassium acetate particles can well sink into the transparent surface layer protective agent or are partially embedded on the surface of the surface layer protective agent, and can play a role in melting ice and snow in ice and snow weather.

The invention belongs to the technical field of engineering materials, and particularly relates to a nano-composite natural rock modified asphalt mixture additive. The additive is prepared from natural rock asphalt as a main raw material and waste tire rubber powder, a polymer, nano-diatomite, lignin fibers, nano-zinc oxide and other raw materials as auxiliary materials, so the elasticity, adhesiveness and rigidity of an asphalt mixture are effectively improved, and the high-temperature deformation resistance, the low-temperature crack resistance and the water damage resistance of the compound rock modified asphalt mixture are remarkably improved.

The invention discloses a bituminous mixture modifier and a preparation method thereof. The bituminous mixture modifier is prepared from waste polyethylene, waste polypropylene, a toughening agent, aninitiator, a modifier, an anti-ageing agent, filler and pigment. According to the bituminous mixture modifier and the preparation method thereof, by adopting modification technologies of blending, grafting, toughening and the like, the industrial, agricultural and domestic recovered waste PE and PP, the other modifier, the filler and the like are mixed evenly according to a certain ratio to prepare black solid particles, according to 0.3-0.5% of total mass of a bituminous mixture, the black solid particles, pitch and mineral aggregate are stirred and mixed evenly at a mixing station under technology conditions of certain temperature, mixing time and the like, thus paving can be conducted, the rut resistance capability of a bituminous pavement can be greatly improved, and meanwhile, both the moisture damage resistance performance and the low temperature resistance performance are obviously improved. By adopting the modification technologies, not only is the cost reduced, but also the high temperature stability of the bituminous mixture can be greatly improved, the foreign technology monopoly is broken, and the bituminous mixture modifier and the preparation method thereof have profound significance in the aspects of positively responding to national waste material resource recycling and the like.

A high-modulus asphalt material with excellent durability and a preparation method thereof. The high-modulus asphalt material is mainly prepared from the following components in parts by mass: 50-65 parts of low-grade asphalt, 15-25 parts of a high-modulus additive, 5-10 parts of coarse aggregate, 5-10 parts of fine aggregate, 3-5 parts of mineral powder, 1-3 parts of an antioxidant, 1-3 parts ofan anti-ultraviolet agent and 0.3-0.5 part of a cross-linking agent. The high-modulus additive is mainly prepared from the following components in parts by mass: a styrene-butadiene-styrene block copolymer, high-density polyethylene, polyethylene PE, low-density polyethylene, organic silicon modified hydroxyl-terminated hyperbranched polyester resin, polypropylene and linear low-density polyethylene. According to the high-modulus asphalt material with excellent durability and the preparation method of the high-modulus asphalt material, the formula is reasonable, the preparation process is simple, the durability is excellent, the modulus of the asphalt material is improved, the high-temperature deformation resistance of an asphalt pavement is improved, the anti-fatigue performance of the asphalt material is improved, and the application prospect is expanded.

The invention discloses a road and bridge engineering concrete crack control method. The method comprises the following steps: S1, preparing materials: preparing Portland cement, a stabilizer, an additive, sandstone, an acrylamide polymer and an epoxy resin slurry material; S2, cleaning impurities: cleaning the surfaces of the concrete cracks; S3, cement mixing: respectively adding Portland cement, a stabilizer, an additive and sandstone into a stirrer, adding a proper amount of water, and starting the stirrer to perform high-speed mixing and stirring; S4, grooving and filling: forming a V-shaped groove in the middle end of the crack, adopting pressure feed equipment to start high pressure filling so as to uniformly fill mixed materials into the cracks of the V-shaped groove; S5, uniform leveling: uniformly smearing the mixed materials on the surfaces of the cracks, and flattening the surface of the cracks in the concrete by adopting a scraping-leveling device; and S6, coating and air-drying. The coating has good high-temperature stability and low-temperature embrittlement resistance, does not melt at high temperature, does not crack at low temperature, and is wear-resistant and corrosion-resistant.

The invention belongs to the technical field of preparation of asphalt additives, and particularly relates to a two-component asphalt anti-stripping agent and a preparation method thereof. The preparation method comprises the following steps: mixing boiler ash, white carbon black, waste ceramic and other substances to obtain a component A; reacting hexamethyldisiloxane, tetramethyldivinylsiloxane,tetraethoxysilane and other substances to prepare a component B. When the two-component asphalt anti-stripping agent is used, the component A and the component B are mixed according to the mass ratioand then added into asphalt, the prepared two-component asphalt anti-stripping agent has good anti-stripping performance, the adhesion between the asphalt and aggregate is high, the heat-resistant stability is good, the water damage phenomenon of an asphalt pavement can be effectively reduced, and the service life of a road is prolonged.

The invention discloses an environment-friendly adhesive capable of being mixed for construction and a preparation method of the environment-friendly adhesive. The adhesive is composed of a component A and a component B. When the adhesive is used, 100 parts by mass of the component A, 150 parts by mass of the component B, 100 parts by mass of tap water and 10 parts by mass of pigment are mixed, then colored ceramic particles with the particle size being 1-3 mm are added, the mixture is stirred evenly, then the mixture is poured on a construction road surface, and the mixture is scraped to be flat through a flat rubber scraper. The environment-friendly adhesive capable of being mixed for construction is waterborne epoxy resin toughened and modified by polyurethane, the elongation at break and the shear strength are remarkably improved compared with those of commercially available waterborne epoxy resin, the crack resistance and the fatigue resistance of a colored anti-skid pavement prepared from the environment-friendly adhesive are remarkably improved, and the introduction of hydrophilic molecular chains is controlled, so that the water damage resistance can be effectively improved. Compared with a conventional colored anti-skid pavement , the colored anti-skid pavement constructed by mixing has the advantages that the anti-stripping capability is higher, and the use amount of the ceramic particles is greatly reduced.

The invention discloses an environment-friendly colored antiskid pavement surface layer protective agent and a preparation method thereof. The surface layer protective agent is composed of a component A and a component B in a mass ratio of (1.2-1.5): 2; and when the surface layer protective agent is used, the component A and the component B are uniformly mixed and sprayed on the surface of a road surface. The surface layer protective agent adopts HMDI type isocyanate, so yellowing and pulverization caused by ultraviolet aging of isocyanate with a benzene ring structure can be prevented; and meanwhile, HMDI is lower in reaction activity and longer in operation time compared with isocyanate with a benzene ring structure, but is higher in reaction activity compared with HDI, so the problem that hard drying time is too long is avoided. Compared with a conventional colored antiskid pavement, a colored antiskid pavement added with the surface layer protective agent is remarkably improved in water damage resistance and fatigue test resistance.

The invention relates to the technical field of asphalt regeneration, and particularly discloses an asphalt regenerant and a preparation method thereof. The asphalt regenerant is prepared from 100 parts of softener, 1-5 parts of elastomeric polymer, 15-30 parts of linearized active rubber, 0.5-5 parts of surfactant and 0.5-5 parts of anti-stripping agent. The linearized active rubber added in thepatent has part of characteristics of high-molecular polymers and part of characteristics of organic adhesives (components with small molecular weights); under the combined action with the elastomericpolymer, the cohesive force between an old material and a new material is improved, the wrapping cohesive force between new asphalt and the old material is improved, and the high and low temperatureperformance of the recycled asphalt mixture can be obviously improved; and the old material is added in a large proportion, and the performance of the pavement asphalt mixture is not influenced.

The invention discloses an anti-stripping environment-friendly colored antiskid pavement and a preparation method thereof. The method comprises the following steps: firstly, repairing and sweeping a pavement; then paving an environment-friendly colored antiskid pavement adhesive, and spreading colored ceramic particles on the adhesive; and after the adhesive is cured, spraying the environment-friendly colored antiskid pavement surface layer protective agent. The environment-friendly colored antiskid pavement adhesive is toughened and modified by polyurethane, the elongation at break and the shear strength have better matching property, and the crack resistance and the fatigue resistance of a paved colored antiskid pavement are remarkably improved. By using the surface layer protective agent, the anti-stripping capability of the ceramic particles of the colored anti-skid pavement is effectively improved, and the water damage resistance of the environment-friendly colored anti-skid pavement is further improved. Compared with a conventional colored antiskid pavement and a water-borne epoxy resin colored antiskid pavement, the colored antiskid pavement disclosed by the invention is more excellent in environmental protection performance, crack resistance and durability.

The invention discloses a high-reflective environment-friendly colored antiskid pavement and a preparation method thereof. The method comprises the following steps: firstly, repairing and sweeping a pavement; then paving an environment-friendly colored antiskid pavement adhesive, and spreading colored ceramic particles on the adhesive; and after the adhesive is cured, spraying an environment-friendly colored anti-skid pavement surface layer protective agent, and spreading glass beads for pavement markings within 3-5 minutes after the environment-friendly colored anti-skid pavement surface layer protective agent is sprayed. The environment-friendly colored antiskid pavement adhesive is toughened and modified by polyurethane, and the elongation at break and the shear strength of the adhesive realize good matching, so the crack resistance and the fatigue resistance of the paved colored antiskid pavement are remarkably improved. By using the surface layer protective agent, the anti-stripping capability of the ceramic particles of the colored anti-skid pavement is effectively improved, and the water damage resistance of the environment-friendly colored anti-skid pavement is further improved. The glass beads are scattered, so the retroreflection coefficient of the colored antiskid pavement is effectively improved, and higher safety indication is provided for the colored antiskid pavement in rainy days and at night.