35results about How to "Improve viscosity and toughness" patented technology

The invention discloses a cold mixing color asphalt mixture and a preparation method. The preparation method comprises the following steps: selecting aromatic hydrocarbon oil, rubber oil, petroleum resin, epoxy resin, a modifier, a plasticizer, a diluent, diatomite, a pigment and stabilizers, and mixing the materials according to the mass proportion, thus obtaining color asphalt cement; selecting an emulsifier, the stabilizers and a defoamer, and mixing the three materials with the color asphalt cement in proportion, thus obtaining emulsified color asphalt cement; and selecting an aggregate, a filler, cement, a waterborne curing agent, an expansive agent and the emulsified color asphalt cement, and mixing the materials in proportion, thus obtaining the cold mixing color asphalt mixture.

The invention provides modified high-viscosity asphalt and a preparation method thereof. The modified high-viscosity asphalt is prepared from, by mass, 88.6%-91.5% of pavement petroleum asphalt, 6.5%-8.5% of butadiene-styrene block copolymer, 1.0%-1.4% of low molecular weight polymer synthetic resin with the molecular weight of 1,480-2,200, 0.8%-1.2% of high molecular weight polymer synthetic resin with the molecular weight of 4,800-8,000 and 0.2%-0.3% of stabilizer. The modified high-viscosity asphalt has the advantage of being good in storage stability, the polymer resin which is slow in separation and is not degradable is used for compound modification, the toughness and visco-toughness of the modified pavement petroleum asphalt are good, the 60-DEG C dynamic viscosity is especially prominent, exceeds 110,000 Pa.S, and is far larger than that, being 60,000-80,000 Pa.S, of commercially available high-viscosity modified asphalt, and the anticorrosion performance is also good.

An SBR styrene-butadiene rubber modified asphalt and a preparation method thereof belong to the technical field of asphalt modification. It is characterized in that the mass percentage of raw materials is composed of: base asphalt 80%~84.5%, aromatic oil 12%~15%, SBR styrene-butadiene rubber asphalt modifier 3.5%~5%; wherein the SBR styrene-butadiene rubber asphalt The raw materials of the modifier are composed in parts by weight: 100 parts of modified styrene-butadiene rubber emulsion (based on dry rubber weight), 0.1-1 parts of anti-aging agent, 5-10 parts of release agent, and 3-6 parts of dicyandiamide formaldehyde condensate and 2~6 parts of aluminum potassium sulfate; heat the base asphalt to melt, add aromatic oil and SBR styrene-butadiene rubber asphalt modifier, shear and swell. The invention not only has low-temperature performance, ductility and bonding performance, but also greatly improves the viscosity-toughness, high-temperature performance and anti-aging performance of the modified asphalt.

The invention discloses a combined type steel deck pavement structure. The combined type steel deck pavement structure comprises a steel deck steel plate and is characterized in that a first modifiedepoxy resin layer, a first crushed-rock layer, a second modified epoxy resin layer, a second crushed-rock layer, a first waterproof adhesive layer, a waterproof structural layer, a second waterproof adhesive layer and a water drainage type wearing layer. According to the combined type steel deck pavement structure, the first modified epoxy resin layer, the first crushed-rock layer, the second modified epoxy resin layer and the second crushed-rock layer form a modified epoxy resin and crushed-rock combined connecting layer. The first waterproof adhesive layer, the waterproof structural layer, the second waterproof adhesive layer and the water drainage type wearing layer form an ultra high performance pavement (called UHPP for short ). According to the combined type steel deck pavement structure, through UHPP-ME, the slipping and delaminating between the structural layers are prevented; and the stability and durability of the structure are guaranteed.

The invention relates to high-toughness composite SBR modified asphalt for a warm-mixed asphalt technology, and a preparation method thereof, and belongs to the technical field of composite modified asphalt. The high-toughness composite SBR modified asphalt is prepared through mixing matrix asphalt, an alkyl condensation substance, an asphalt modifier and a stabilizer. The raw materials comprise,by mass, 85-95% of the matrix asphalt, 1-5% of the alkyl condensation substance, 2-10% of the asphalt modifier and 0.2-2% of the stabilizer. The preparation method comprises the following steps: (1) weighing the matrix asphalt according to the mass percentage of 85-95%, then placing the matrix asphalt in a heating and mixing container, carrying out heating to a temperature of 120-160 DEG C to enable the matrix asphalt to be molten completely, carrying out heat insulation while carrying out stirring; (2) weighing the asphalt modifier according to the mass percentage of 2-10%, weighing the alkyl condensation substance according to the mass percentage of 1-5%, then adding the asphalt modifier and the alkyl condensation substance to the molten matrix asphalt, and carrying out stirring and mixing; (3) heating to the temperature of 160-180 DEG C, weighing the stabilizer according to the mass percentage of 0.2-2%, then adding the stabilizer to the resulting mixture from the step (2), uniformly stirring and mixing, removing the material from the heating and mixing container to prepare the high-toughness composite SBR modified asphalt.

The invention relates to a high polymer chemically-modified asphalt composition and a preparation method thereof. The preparation method comprises the following steps: chemically modifying rubber, elastomer and base asphalt, and additionally matching stuffing and processing aids; premixing the materials by high polymer processing equipment to prepare the master batch of the modified asphalt; and fully dispersing the master batch into the asphalt by a high-speed shear mixer or by mechanical stirring. Or the modified asphalt material can be prepared by firstly pre-preparing a viscous liquid mixture of modified asphalt and then stirring and mixing the viscous liquid mixture of modified asphalt with the base asphalt. The modified asphalt material prepared by the invention has stable storage performance at high temperature, good performance at high temperature and low temperature, stable processing and preparation and simple and convenient method, and not only can be directly used in factory production but also can be used for road laying sites and in the construction of waterproofing materials.