20 results about "Rubberized asphalt" patented technology

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 application provides a heating and heat preservation device and a mobile modified rubber asphalt production equipment, and relates to the technical field of asphalt production and heat preservation. The heating and heat preservation device comprises a storage tank and a turnover heat conduction mechanism. A pipe rod is arranged through the axis of the storage tank and rotates, a rotating drive assembly is installed on the driving end shaft of the end of the storage tank and rotates. An oil inlet assembly is rotatably and communicatively arranged with a front pipe cylinder, an oil return assembly is rotatably and communicatively arranged with a rear pipe cylinder, a front coil pipe is symmetrically arranged on both sides of a front shaft, and a rear coil pipe is symmetrically arranged on both sides of a rear shaft. The front coil pipe and the rear coil pipe are arranged in the middle of the storage tank, the rotated front coil pipe and the rear coil pipe further increase the heat conduction area, the front coil pipe and the rear coil pipe can stir the asphalt oil in the storage tank, the heated asphalt oil in the storage tank is more uniform, the uniformity of the rubber powder and the asphalt oil in the storage tank is improved, and the deposition of the rubber powder is reduced.

Some embodiments relate to a method for producing a rubber-containing asphalt composition. The method for producing the rubber-containing asphalt composition comprises obtaining a rubber component; obtaining an unoxidized asphalt; mixing the rubber component and the unoxidized asphalt to obtain an unoxidized asphalt composition; oxidizing the unoxidized asphalt composition to obtain an oxidized asphalt composition; and forming a roofing shingle from the oxidized asphalt composition.

The present application relates to the technical field of asphalt modification, and particularly relates to a self-healing modified asphalt, asphalt mixture and a preparation method thereof. The self-healing modified asphalt comprises the following raw materials: base asphalt, organic modified montmorillonite and bagasse fiber. The added weight of the organic modified montmorillonite accounts for 0.5-5% of the weight of the base asphalt. The particle size of the organic modified montmorillonite is 0.5-30 microns, and the organic modified montmorillonite has a layered structure. The added weight of the bagasse fiber accounts for 0.1-5% of the weight of the base asphalt. The organic modified montmorillonite-bagasse fiber modified asphalt has low viscosity, small softening point and high penetration. The modified asphalt performs well in the crack repair process. The addition of the organic modified montmorillonite and the bagasse fiber significantly improves the self-healing performance of the modified asphalt. The self-healing performance of the organic modified montmorillonite-bagasse fiber modified asphalt is significantly better than that of rubber asphalt.

The utility model relates to the technical field of pitch, concretely relates to rubber pitch mixture ultraviolet ageing performance testing arrangement, including ultraviolet ageing experiment box body, the inner wall of ultraviolet ageing experiment box body is connected with the placing mechanism, the baffle of sliding sleeve is connected in the placing mechanism, the upper end surface of baffle is established with the sliding slot, the inner wall of baffle is connected with the sliding plate, the front of ultraviolet ageing experiment box body is fixedly installed with first support plate, the upper end surface of first support plate is fixedly installed with telescopic pneumatic cylinder, the outer arc face fixedly installed with first moving plate of telescopic pneumatic cylinder telescopic end symmetry both sides. The utility model, through telescopic pneumatic cylinder utilize first moving plate to pull the movable plate, the other end of movable plate pulls the connecting rod, when the connecting rod is stressed, can control the overturning of fluorescent ultraviolet lamp, realizes the ultraviolet ageing performance test to rubber pitch in multiple angles, guarantees more comprehensive when testing.

This invention relates to the technical field of road engineering, and in particular to a method for converting old road structures into long-life pavement structures based on low-carbon cold recycling, comprising the following steps: S1, milling and recycling of the old pavement layer; S2, conversion of the semi-rigid base course system by vibratory compaction using a road roller to convert the semi-rigid base course into a granular flexible subbase course; S3, injection of a semi-flexible isolation layer; injection of a highly permeable slurry into the crushed base course to form a flexible recycled isolation layer; S4, forming of the flexible recycled base course; uniformly spreading a mixture of milled recycled material and new aggregate on the isolation layer, and simultaneously spraying and injecting bio-based modified emulsified asphalt; S5, laying of a low-carbon surface layer; spraying a modified emulsified asphalt tack coat onto the surface of the flexible recycled base course, followed by spreading a rubber asphalt concrete surface layer, and finally compacting it. The construction method of this invention solves the problems of "high carbon emissions, rapid recurrence of reflective cracks, and short lifespan" in traditional old road reconstruction and expansion.

The application provides a warm-mix rubber asphalt binder and a preparation method and a mixture thereof, raw materials of the warm-mix rubber asphalt binder comprising: base asphalt, waste tire rubber powder and a warm-mix additive; wherein the waste tire rubber powder is used in an amount of 15-20 wt% based on the mass of the base asphalt; the warm-mix additive is a Fischer-Tropsch wax, and the Fischer-Tropsch wax is used in an amount of 2-4 wt% based on the total mass of the warm-mix rubber asphalt binder; and the warm-mix rubber asphalt binder does not contain cutback oil. The warm-mix asphalt rubber mixture provided by the application has better high-temperature rut resistance.

The application provides a pre-spraying anti-sticking waterproof construction method, which comprises the following steps: spraying pre-spraying anti-sticking sprayed rapid-setting rubber asphalt waterproof coating on the surface of a base layer to be constructed; naturally drying after the construction is completed; uniformly spreading fine sand on the surface of the pre-spraying anti-sticking sprayed rapid-setting rubber asphalt waterproof coating to form a fine sand layer; pouring a subsequent concrete structure after binding steel bars, so that the fine sand layer is naturally integrated with the concrete and becomes a part of the poured concrete, thereby preventing the steel bars from being bonded with the pre-spraying anti-sticking sprayed rapid-setting rubber asphalt waterproof coating and from damaging the pre-spraying anti-sticking sprayed rapid-setting rubber asphalt waterproof coating, preventing the waterproof layer from being damaged by the steel bars during the construction process, and effectively protecting the waterproof layer; the fine sand layer can also serve as a protective layer, reducing the surface temperature and surface aging degree of the waterproof layer formed by the pre-spraying anti-sticking sprayed rapid-setting rubber asphalt waterproof coating under long-time direct sunlight, and thereby improving the anti-sticking performance of the pre-spraying anti-sticking sprayed rapid-setting rubber asphalt waterproof coating.

This invention relates to a biomimetic adhesive modified rubber asphalt and its preparation method, comprising the following steps: heating and melting base asphalt, adding rubber powder under stirring conditions to obtain a first rubber powder asphalt blend; subjecting the first rubber powder asphalt blend to a first shear treatment to obtain a second rubber powder asphalt blend; adding a biomimetic adhesive polymer to the second rubber powder asphalt blend, subjecting it to a second shear treatment to obtain a third blend; adding methyl epoxide fatty acid ester to the third blend, stirring evenly, and then subjecting it to a constant-temperature swelling and development treatment to obtain modified rubber asphalt. This invention uses a biomimetic adhesive polymer and methyl epoxide fatty acid ester as additives to improve rubber asphalt. The resulting modified rubber asphalt can balance high-temperature stability and low-temperature crack resistance; it has moderate viscosity, improving its workability; and it can alleviate the phase separation behavior of rubber asphalt, thereby improving its storage stability.

The application provides a rubber asphalt waterproof coating composition, a non-cured rubber asphalt waterproof coating and a preparation method thereof, and belongs to the technical field of building materials.The rubber asphalt waterproof coating composition comprises, by weight fraction, 40-50 parts of 200# asphalt, 10-20 parts of 70# asphalt, 2-10 parts of a thermoplastic elastomer modifier, 1-2 parts of a dispersing aid, 5-10 parts of functionalized mesoporous silica and 20-30 parts of a filler; wherein the functionalized mesoporous silica comprises mesoporous silica loaded with aldehyde compounds and polyphenol compounds.The non-cured rubber asphalt waterproof coating provided by the application has good elongation performance, heat aging resistance, low-temperature performance and the characteristics of low volatile organic compound (VOCs) content.

This invention provides a novel reservoir-wide seepage prevention system for a pumped-storage power station. The system includes a reservoir basin, reservoir banks, and a seepage prevention structure. The seepage prevention structure includes a geotextile layer, a quick-setting rubber asphalt waterproof coating seepage prevention layer, a toe slab, another geotextile layer, and a top layer. The geotextile layer is laid on top of the reservoir banks and basin, and a quick-setting rubber asphalt waterproof coating seepage prevention layer is sprayed onto the top of the geotextile layer. The toe slab is positioned on top of the quick-setting rubber asphalt waterproof coating seepage prevention layer, and a quick-setting rubber asphalt waterproof coating seepage prevention layer is sprayed onto the top of the toe slab. Another geotextile layer is laid on top of the quick-setting rubber asphalt waterproof coating seepage prevention layer on the toe slab. The top layer is placed on top of the other geotextile layer. This technical solution utilizes multiple layers of geotextile and multiple layers of quick-setting rubber asphalt waterproof coating seepage prevention layers in combination, achieving full reservoir seepage prevention.

The present application relates to the technical field of modified asphalt, and particularly relates to a solid waste based polyurethane rubber modified asphalt, a preparation method and application thereof. The method comprises the following steps: obtaining modified rubber powder by pretreating, catalytic regeneration and oxidative modification of waste rubber powder; obtaining non-capped solid waste based polyurethane prepolymer by reacting the modified rubber powder with bio-based polyol, isocyanate and stabilizer; simultaneously preparing terminal blended rubber asphalt by shearing matrix asphalt and waste rubber powder; and finally obtaining solid waste based polyurethane rubber modified asphalt by shearing and mixing the prepolymer and the terminal blended rubber asphalt. The present application utilizes catalytic regeneration and oxidative modification to synergistically treat waste rubber powder, and combines bio-based polyol to construct non-capped polyurethane prepolymer. After being combined with terminal blended rubber asphalt, a stable crosslinking network is formed. The modified asphalt retains excellent storage stability and construction workability, improves high-temperature anti-rutting performance and anti-aging performance, and realizes high-value utilization of solid waste resources.

The invention relates to the technical field of road engineering, in particular to composite modified rubber asphalt as well as a preparation method and a mixture thereof, in the composite modified rubber asphalt provided by the invention, an SBS modifier, waste rubber powder and ultrafine natural asphalt powder are uniformly dispersed in road petroleum asphalt to form a three-dimensional network structure and a blending system. According to the present invention, by using the flexibility of the SBS modifier, the high viscoelasticity of the waste rubber powder, and the high softening point and the low temperature sensitivity of the ultrafine particle natural asphalt, the comprehensive pavement performance such as the high temperature, the low temperature, the modulus, the fatigue resistance, the water damage resistance and the like of the asphalt and the mixture thereof are effectively improved, and the ultrafine particle natural asphalt contains the mineral component so as to provide the good anti-stripping effect, the water damage resistance of the asphalt mixture is further improved.

This invention relates to the field of road engineering technology, specifically disclosing a high-performance composite thin-layer pavement structure and its construction method. The composite thin-layer pavement structure comprises a top layer and a bottom layer, with a total thickness of 8-12 cm. The top layer is a 3-5 cm thick polyolefin dynamically vulcanized elastomer (PO / GTR-TPV) modified asphalt mixture layer; the bottom layer is a 5-7 cm thick rubber asphalt slurry mixture layer. Compared with traditional asphalt pavements and conventional modified asphalt pavements, this invention features a three-dimensional stable network formed by the PO / GTR-TPV modified asphalt top layer and high-elasticity support provided by the bottom rubber asphalt layer, significantly improving rutting resistance. The bottom rubber asphalt layer can efficiently absorb stress, exhibiting enhanced low-temperature crack resistance and water stability. Furthermore, this invention achieves solid waste resource utilization, demonstrating significant low-carbon and environmental benefits, lower engineering costs, reduced initial construction costs, and reduced road closure construction time. This effectively reduces traffic congestion and social delay costs.

This invention discloses a hierarchical porous iron-manganese-microorganism composite functional material for desulfurization of rubber asphalt flue gas, belonging to the field of environmentally friendly asphalt technology. This invention utilizes the three-level porous functional partitioning structure of the adsorbent material, using micropores for loading iron-manganese bimetallic catalytic sites, mesopores for mass transfer, and macropores for microbial immobilization. This achieves spatial separation and synergistic effect between catalytic oxidation and microbial degradation, fundamentally preventing micropore blockage by particulate matter or microbial metabolites. It effectively solves the problems of easy clogging and rapid efficiency decline in existing desulfurization materials, and is suitable for the high oil mist and high particulate matter characteristics of rubber asphalt flue gas. This invention is applicable to the efficient purification treatment of flue gas in rubber asphalt production and can be applied to the desulfurization reaction system of rubber asphalt flue gas to achieve efficient adsorption, catalytic oxidation, and deep degradation of sulfides.

The utility model relates to a waterstop structure at the joint of new and old buildings, which comprises an original building outer wall and a new building foundation, and further comprises a waterstop steel plate fixed to the original building outer wall, a waterproof coating arranged between the waterstop steel plate and the original building outer wall, a bonded rebar structure arranged in the new building foundation, and a cushion layer arranged below the new building foundation. The galvanized waterstop steel plate and the non-solidified rubber asphalt coating form a composite waterproof system, thereby forming a multi-stage waterproof barrier and effectively preventing groundwater from seeping into the building interior through the joint; the M8 expansion bolt fixes the waterstop steel plate and the bonded rebar structure to form a bidirectional anchoring system, thereby dispersing the settlement stress and being adaptable to dynamic settlement deformation.

The application relates to the technical field of building waterproofing, and discloses a composition for non-cured rubber asphalt waterproofing paint, non-cured rubber asphalt waterproofing paint, a preparation method and application thereof. The composition contains bitumen I, SBS, SBR, a composite filler and a modifier; the composite filler is a combination of nano-silicon dioxide, nano-calcium carbonate and slag powder in a content mass ratio of 1:0.5-2:2.5-12; a raw material composition A for forming the modifier contains bitumen II, modified fibers, white mud and fly ash; the non-cured rubber asphalt waterproofing paint provided by the application has excellent low-temperature bending property, heat aging property, high-temperature anti-flowing property and bonding strength, and the utilization rate of solid waste is significantly improved, and the cost is reduced.

The utility model provides a kind of non-solidified rubber asphalt coating heating device, including support shell, rotating device, heating cylinder and heating device, rotating device is equipped in the inside of support shell;The heating cylinder is arranged on the rotating device, and the rotating device can drive the heating cylinder to rotate;The heating device is arranged in the lower part of the heating cylinder.The utility model has the beneficial effects of realizing the stable heating of non-solidified rubber asphalt coating, improving the heating uniformity of asphalt coating, effectively ensuring the heating temperature of asphalt coating, improving the heating quality of asphalt coating, ensuring waterproof effect, reducing leakage risk, improving the heating efficiency of asphalt coating, reducing environmental pollution, reducing safety hazards, reducing heat loss, simple structure and convenient operation.

The utility model provides tower crane hole mouth retaining wall relates to the field of construction, including non solidified rubber pitch waterproof paint, waterproof protective layer and rubber waterproof sleeve ring, the non solidified rubber pitch waterproof paint upper side lays SBS coiled material, the waterproof protective layer upper side has poured the reverse ridge, rubber waterproof sleeve ring inboard has the column body reinforcing steel bar, column body reinforcing steel bar outside has poured the structural column, structural column top end installs the ring beam, the lower side of ring beam installs longitudinal steel pipe, longitudinal steel pipe central position installs horizontal steel pipe. Through the setting of non solidified rubber pitch waterproof paint, SBS coiled material, aerated block, waterproof protective layer, rubber waterproof sleeve ring, longitudinal steel pipe and horizontal steel pipe, the waterproof layer reduces material waste and leakage risk, improves construction quality and efficiency, reduces construction cost, solves the problem that the underground garage roof tower crane reserved hole influences earthwork backfilling progress and rainwater leakage leads to poor waterproof layer closure effect.