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.

The invention discloses a mochi prepared mix with long guarantee period, a mochi and a preparation method of the mochi prepared mix. The mochi prepared mix is composed of the following ingredients by mass percent: 30%-50% of water-milled glutinous rice powder, 40%-60% of modified tapioca starch, 2%-6% of non-reduced sugar powder, 0.5%-1.5% of edible colloid, 0.5%-2% of edible emulsifier, 0.1%-0.3% of acidity regulator and 0.1%-0.5% of antiseptic preservative. The mochi has good taste. The mochi prepared mix according to the invention is not only good, smooth and elastic in taste, but also overcomes the defect of short guarantee period of traditional mochi; with strong starch aging-delaying performance and antiseptic fresh-keeping effect, the mochi prepared mix can be stored for 6 months at normal temperature (namely 25 DEG C) or for 12 months under refrigerating conditions, and can serve as a snack which is commercially available for a long time in order to meet the demands of market circulation.

The invention discloses a combined-type steel bridge deck laying method. The combined-type steel bridge deck laying method comprises the following steps that A, a modified epoxy resin and gravel combined-type connection layer is laid, specifically, the surface of a steel plate of a steel bridge deck is subjected to sandblasting shot blasting, modified epoxy resin is laid and smeared on the surfaceof the steel plate to form a first modified epoxy resin layer, gravel is scattered on the surface of the first modified epoxy resin layer to form a first gravel layer, modified epoxy resin is evenlylaid and smeared on the surface of the first gravel layer according to the set dosage to form a second modified epoxy resin layer, and then gravel is scattered to form a second gravel layer; and B, ultra-high performance pavement is laid, specifically, active epoxy asphalt or high-viscosity modified emulsified asphalt is smeared on the surface of the connection layer to form a first waterproof bonding layer, then a stone mixture is laid and smeared to form a waterproof-type structure layer, and finally integrated spreading of a second waterproof bonding layer and a drainage-type abrasion layeris conducted through special equipment. According to the combined-type steel bridge deck laying method, sliding and delaminating between the structural layers are prevented, and the stability and durability of the structure are guaranteed.

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 is applied to the field of road engineering materials, and discloses a high-permeability anti-aging modifier which is prepared from the following raw materials in parts by mass: 35-45 parts of a light component, 4-6 parts of a permeation promoting component, 20-25 parts of a plastification component, 4-5 parts of a tolerance component, 5-10 parts of an anti-aging component, 4-8 parts of water and 18-25 parts of an SBS component. The permeation effect of the high-permeability anti-aging modifier on aged asphalt is improved by virtue of polarization treatment of the light component, the regeneration effect is improved, meanwhile secondary aging of regenerated alphabet in the mixing and service process, and moreover the adhesion and toughness property of alphabet is improved. The Marshall stability of an anti-aging regenerated alphabet mixed material is up to 12KN, the flexural-tensile strain of the anti-aging regenerated alphabet mixed material is up to 2568mu epsilon, the anti-aging property of the anti-aging regenerated alphabet mixed material is remarkably improved, and application of a high-volume regenerated alphabet mixed material in a road surface layer structure is possible.

The invention discloses SBR styrene-butadiene latex for modifying emulsified asphalt and a preparation method thereof, belonging to the technical field of asphalt modification. It is characterized in that the composition of raw materials by weight is: 100 parts of cross-linked grafted styrene-butadiene rubber emulsion with a solid content of 40%~60%, 2~6 parts of nonionic emulsifier, 3~6 parts of cationic emulsifier, system pH regulator 0.5~1.5 parts; The preparation steps are: Concentrate cross-linked grafted styrene-butadiene latex and stop when the latex concentration reaches 40%~60%; add nonionic emulsifier, stir for 10 min~15min; add cationic emulsifier according to the ratio of raw materials , stir for 10 min~15min; add system pH regulator according to the ratio of raw materials, and adjust the pH to 2~5. The SBR styrene-butadiene latex of the invention is easy to use, has high stability after being mixed with emulsified asphalt, and can significantly improve the high-temperature resistance performance, viscosity toughness, toughness and anti-aging performance of the 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.