668 results about "Bituminous materials" patented technology

The invention discloses a bridge heat fixed epoxy tar material and preparing method, which consists of A and B, wherein A part quality component is 60-76 modified tar with carboxy group or acid anhydride, grease group diacid, 11-25 dimer acid or alkyd resin, 10-25 fatty acid and 0.05-0.65 solidifying celeratist; B is epoxy resin; the quality rate of A and B is 2:1-8:1. The invention possesses high strength and good flexibility, which is fit for higher occasion.

The present invention relates generally to the field of release agents commonly in uses in preventing asphalt and other sticky compounds such as rubbers from sticking to the transporting vehicles such as dump truck beds and processing tools, and equipment, and more particularly to a novel biodegradable release agent applied to metal surfaces prior to use for promoting free release of sticky hot-mix asphalt materials from the metal tools and equipment used in road construction applications.

The anticracking patch includes protecting film layer, upper coating layer, high strength base layer and lower coating layer arranged successively from the top to the bottom. Both the upper coating layer and the lower coating layer are made of polymer modified asphalt material comprising asphalt 48-58 wt%, SBS 5-10 wt%, tackifying resin 7-13 wt%, engine oil 4-8 wt%, rubber powder 9-11 wt%, tackifying petroleum resin 1-3 wt% and intensifier 3-13 wt%. The present invention is industrially produced and has excellent anticracking and waterproofing functions.

This invention relates to bituminous compositions comprising an interpolymer and a bituminous material and methods of making and using same. The interpolymer may comprise ethylene, at least one alpha-olefin, and, optionally, at least one diene and the interpolymer is derived from polymer particles having a surface coating comprising a partitioning agent. Methods of making and using the bituminous compositions are also described.

The present invention relates to a modified water-proofing asphalt roll material (called SA roll material for short), and is characterized by that in the raw material formula of asphalt 4-15% of thermoplastic elastomer polystyrene-butadiene-styrene block copolymer (SBS), 3-12% of atactic polypropylene (APP), 1-8% of light shielding agent, 0.05-3% of antioxidant, 0.05-3% of light stabilizer and 0.05-3% of UV absorbing agent. Said water-proofing roll material possesses low-temp. resistance, high-temp. resistance. UV-resisting property and good ageing resistance.

A composite substrate (10) is prepared for reinforcing a bituminous roofing material by securing together a carrier web (12) with a first set (14) of fiberglass rovings bundles and a second set (16) of fiberglass rovings bundles. The carrier web will have a pair of opposed planar surfaces. The web will define a machine direction and a cross machine direction for the substrate, with the first and second sets of rovings bundles each positioned in parallel relationship, with the longitudinal axes defined by the individual rovings of the two sets being in non-parallel relationship to each other when viewed normal to the plane of the web. The bundle sets are maintained in the spaced apart parallel relationships and the non-parallel angular relationship by the adhesive, stitching or other conventional method of securing which holds the substrate together. If a stitching machine is used, the preferred yarn (18) would be a polyester yarn. The preferred web is a woven polyester mat and the preferred rovings bundles will be 1800 yield or heavier. After preparation, this substrate is dipped in molten bituminous material to provide a web of reinforced roofing material in which the substrate is embedded in a continuous matrix of the bitumen.

The invention discloses an uncured polyurethane waterproofing coating and a preparation method thereof, belonging to the technical field of polyurethane waterproofing coatings. The uncured polyurethane waterproofing coating is prepared from the following raw materials in percentage by weight: 13-20% of prepolymer, 30-65% of asphalt, 1.0-1.5% of latent curing agent, 3-15% of compatilizer, 2-9% of thermoplastic elastomer and 0-3% of powder stuffing, wherein prepolymer is a substance synthesized by reaction between polyether and isocyanate. The uncured polyurethane waterproofing coating mainly aims to improve the material proportion and polymerization process of polyurethane, and the problem that a hot-melted asphalt material is needed to be heated by using a machine is solved; the uncured polyurethane waterproofing coating is convenient in construction and good in flowability; the viscosity of the constructed material can be automatically enhanced, so that the constructed material can become an elastic plastic body and a favorable waterproofing layer without internal stresses; in addition, the uncured polyurethane waterproofing coating can be well bonded with a coiled material and can be compounded to be waterproof so as to form a waterproofing layer capable of overcoming tension fracture caused by basement layer cracking and preventing puncturing; the uncured polyurethane waterproofing coating is simple and convenient in process, rapid in construction, free of maintenance, high in working efficiency and capable of becoming the development direction of building waterproofing in the further.

The invention discloses a method for preparing an active nano calcium carbonate compound modified asphalt material, which comprises the following steps in turn: heating base asphalt to be 120 to 190 DEG C till the base asphalt can fully flow, adding definite amount of SBS and active nano calcium carbonate into the base asphalt, stirring the mixture for 30 minutes at low speed, adding definite amount of stabilizing agent, emulsifying and shearing the mixture for 30 minutes. Based on the prior SBS modified asphalt, the method adds the definite amount of the active nano calcium carbonate as compound modifier. Because the surface of the active nano calcium carbonate is subjected to organic active treatment and has better oleophilic property, the active nano calcium carbonate has better compatibility and dispersion property in the asphalt. The high-temperature property and the dynamic stability of the asphalt can be remarkably improved by adding the definite amount of the active nano calcium carbonate into the modified asphalt; and simultaneously because the active nano calcium carbonate is already subjected to large-scale industrialized production, the cost is relatively low, and the active nano calcium carbonate after adding can lower the production cost of the modified asphalt remarkably.

The invention discloses a cold-stirring cold-paving type epoxy modified asphalt material and a preparation method thereof. The cold-stirring cold-paving type epoxy modified asphalt material is composed of a main ingredient A and a curing agent B; the main ingredient A comprises the following components in parts by weight: 0-50 parts of epoxy resin, 40-90 parts of flexibilizer, 5-15 parts of reactive diluent, 10-40 parts of asphalt, 10-40 parts of active bulking agent and 0-5 parts of coupling reagent; the curing agent B comprises the following components in parts by weight: 0-100 parts of flexible curing agent, 0-100 parts of alicyclic amine curing agent and 0-10 parts of accelerant; and the ratio of the main ingredient A to the curing agent B is (1-5):1. The invention utilizes a self-assembly behavior of the active bulking agent on the surface of asphalt particles to solve the problem of compatibility between weak polar asphalt and strong polar epoxy resin. A flexible chain segment is introduced into an epoxy asphalt three-dimensional structure network by the flexibilizer and the flexible curing agent, so that the fatigue toughness of the epoxy asphalt material is greatly promoted and the secondary cracking phenomenon caused by insufficient toughness is effectively restrained.

A roofing membrane (10) is formed by impregnating and coating a composite material (11) with a bituminous material. The composite material (11) is formed with a first layer (12) made of a non-woven polyester mat. A second layer (13) is positioned adjacent to the first layer (12) and is formed as a non-woven fiberglass scrim. An optional third layer (14) is positioned adjacent to the second layer (13) and is formed of a non-woven polyester scrim. A fourth layer (15) is positioned adjacent to the third layer (14) and is made of a non-woven polyester mat. A fifth layer (16) is positioned adjacent to the fourth layer (15) and is also a non-woven polyester mat. The layers (12, 13, 14, 15, 16) may be attached by needle punching to form the composite material (11).

The invention relates to a foaming modified asphalt composition. The foaming modified asphalt composition disclosed by the invention comprises 60-130 parts of matrix asphalt, 3-15 parts of waterborne emulsion, wherein the waterborne emulsion is formed by emulsifying 35-65wt% of asphalt modifier, 1-8wt% of emulsifier, 1-2wt% of foam stabilizer, 0.01-3wt% of coupling agent and 23-63% of water. The matrix asphalt and the waterborne emulsion containing the modifier are adopted, asphalt modification is realized when the matrix asphalt is foamed, the foamed modified asphalt has dual characteristics of a foam asphalt material and a modified asphalt material, the production step of modifying the asphalt is saved, the construction temperature of the asphalt mixture is reduced by 30-50 DEG C, and the asphalt mixture is prevented from aging, is superior to hot-mixed modified asphalt mixture and is obviously superior to common foamed asphalt in pavement performance. The modified asphalt equipment investment and production cost are saved, energy conservation and emission reduction are realized, and the process is easy and convenient.

A cost-effective solution is provided for eliminating refinery process waste, including spent catalytic and non-catalytic adsorbent materials, as well as adsorbate process reject materials derived from desorption, while minimizing conventional waste handling demands. An asphalt composition includes asphalt and spent adsorbent material from a solvent deasphalting unit. The asphalt can comprise asphaltic material obtained from a solvent deasphalting unit, and spent adsorbent material in the asphalt composition was previously utilized in the solvent deasphalting unit. The asphalt composition can also include process reject materials.

Methods and systems for efficiently manufacturing modified asphalt materials include agitating a base asphalt at a high shear rate using an in-line mixer equipped with a rotor-stator mixing tool while simultaneously exposing the asphalt to oxygen by blowing an oxygen-containing gas at a high gas flow rate through openings in the rotor-stator mixing tool and heating the asphalt at an elevated temperature.

The invention discloses an asphalt regenerator for improving the high temperature stability for mixing material of waste asphalt. According to the parts by weight, the components are as below: 70 to 95 of refinery waste rich in aromatic fraction and colloid; 5 to 25 of resin; 0.1 to 1 of antioxidant; 0.1 to 1 of anti-ultraviolet addition agent; 2 to 5 of stabilizing agent for high temperature. The invention also discloses the preparation method for the asphalt regenerator. Aiming at aged asphalt property in waste asphalt mixing material, the invention adds the resin, the antioxidant and the anti-ultraviolet addition agent in refinery waste rich in aromatic fraction and colloid and makes rational selection and matching for material of each material. The invention has the advantages of easy availability for raw material, low requirement for equipments, simple preparing art and convenient use. The invention obviously improves stability of high temperature for regenerated asphalt mixing material and other active results, lowers construction cost and is suitable for green ecological and sustainable development.

The invention relates to a laminated nanometer clay/waste rubber power composite modified asphalt material and a preparation method thereof. The composite modified asphalt material comprises the following components in percentage by mass: 100 parts of matrix asphalt, 1-7 parts of laminated nanometer clay, 5-20 parts of waste rubber power and 1-5 parts of furfural extract oil. The laminated nanometer clay and the waste rubber power are adopted as modifiers for the matrix asphalt, a shear emulsifying machine is adopted as a dispersing device and a melt blending method is adopted in the preparation method. The preparation method comprises the following specific steps: heating until raw materials are molten and carrying out shear mixing. The composite modified asphalt material prepared by the preparation method has the advantages of excellent anti-rutting property, excellent UV aging property and storage stability. The preparation method has the characteristics of cheap raw materials, simple process and the like and provides an economical and environment-friendly solution for subsequent processing of waste tires. The composite modified asphalt material can be used in the fields of pavement of high-grade road surface, such as bridge and airport, construction and the like.

An acoustical absorbing membrane that may be used in removable panel finishing systems is provided. The acoustic membrane may be formed of any sound transmission loss material that possesses sound-absorbing or sound-deadening qualities. Examples of suitable materials include foil, a foil-faced asphalt material, elastomeric materials, composite laminates, a polymer film, a composite material formed of an organic bonding material and one or more types of reinforcement fibers, a cement board, a gypsum board, a gypsum/WUCS board, a dense WUCS mat, a film formed of a fiberglass reinforced resin, and/or any dense polymeric material. In at least one exemplary embodiment, the acoustic membrane may be a film formed of a loaded polymer or copolymer, such as a copolymer of ethylene-vinyl acetate loaded with barium or CaCO₃. The acoustic membrane may have a density of approximately 1 lb/ft²-3 lbs/ft² and preferably has a thickness from about 1/16-⅜ of an inch.