Phosphate compounds as adhesion promotors

FIELD: chemistry.

SUBSTANCE: invention relates to application of a phosphate derivative to promote adhesion between bitumen and aggregates in an asphalt composition. The composition contains bitumen and a phosphate derivative. The phosphate derivative is obtained as a result of: i) etherification of a polyhydric alcohol containing at least three hydroxyl groups with a carboxylic acid containing 8-24 carbon atoms or a derivative thereof, wherein at least one, but not all hydroxyl groups undergo etherification, provided that if the polyhydric alcohol contains 5 or more hydroxyl groups, then at least two, but not all hydroxyl groups will be subjected to etherification, followed by introduction of the resulting ester into the reaction with a phosphating reagent; or ii) carrying out transetherification of triglyceride under the action of glycerine, followed by reaction with a phosphating reagent. Moreover, the said composition is not a "bitumen in water" emulsion.

EFFECT: proposed additive increases bitumen adhesion to acidic and basic aggregates, and demonstrates good ecological characteristics.

19 cl, 5 tbl, 4 ex

 



 

Same patents:

FIELD: construction, road construction.

SUBSTANCE: invention is related to production of road construction materials, namely, to methods for production of cold organic mineral mixtures on the basis of mineral fillers and organic binding agents. In method for production of cold organic mineral mixture for road pavements, filler of initial raw materials is mixed with water in mixer, then organic binding agent heated up to 140-160°C in introduced in mixer, and mixing goes on until binding agent is completely dispersed, and uniform mixture is prepared. Process is carried out without heating of both initial raw material filler with temperature of 5-18°C and water. Per 100% of filler 4-11% of water are taken and 3-9% of organic binding agent.

EFFECT: reduction of power and labour inputs in production with increased ecological compatibility.

8 cl, 6 ex

FIELD: science of materials for building, particularly for road-building.

SUBSTANCE: method involves applying wet material mixture and bitumen heated up to 100-160oC on pavement surface, wherein mineral mixture has humidity of 2.5-6% of dry mineral mixture mass; mixing above components by feeding mineral mixture under pressure of 7-10 Atm through the first hose to ejection gunited plant simultaneously with applying heated bitumen under pressure through the second hose; applying the obtained high-pressure mixture on pavement, wherein bitumen mineral mixture spray discharged from nozzle is directed at an angle of 35-55o to pavement surface.

EFFECT: improved bitumen film adhesion to mineral material surface, enlarged time period suitable to perform road repairing due to possibility to repair roads at low temperatures and due to possibility to prepare bitumen-mineral mixture in-situ; increased water-proofness and frost-proofness of pavement.

2 cl, 2 tbl, 1 dwg

The invention relates to a road surface containing asphalt composite material comprising oxidized by blowing air in the presence of acid, asphalt, and polymer containing epoxypropyl, and specified road surface is a road surface, which is often exposed to lube oil fractions, and more specifically to the road surface, stacked on landing sites airfield airfield, on the strips of roads designated for through traffic, and/or on the roadway fueling stations, as well as to the method of preparation of such asphalt composite material, mixture, consisting of a filler and asphalt composite material of the specified type

Bitumen composition // 2556925

FIELD: chemistry.

SUBSTANCE: invention relates to bitumen compositions and can be used for obtaining bitumen compositions, applied in road and airfield construction. Bitumen composition includes mixture of oxidised bitumen with unoxidised oil petroleum product, with application as unoxidised oil petroleum product of heavy gasoil of catalytic cracking with ratio, respectively, oxidised bitumen:heavy gasoil of catalytic cracking 95-99:5-1 wt %, with heavy bitumen having softening point equal or higher than softening point of final product.

EFFECT: result consists in simplification of bitumen composition formulation with obtaining bitumen with improved quality characteristics, in particular penetration at 0°C, without losing resistance to ageing by index of change of softening point after warming-up.

2 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to field of producing compositions, which include modified sulphur, which can be applied for production of building materials - sulphuric concretes and sulphur-asphalt concretes, applied in different fields of building, including transport, hydrotechnical, hydromeliorative, etc. Method of obtaining modified sulphur consists in the fact, that melted sulphur is supplied into reactor at temperature 120-135°C, after that, salts of ammonium and/or potassium are introduced into reactor in quantity from 0.001 to 0.005 wt % of sulphur weight, mixed for 5-10 minutes, after which 5-ethylene-2-norbornen is introduced in quantity from 0.08 to 0.1 wt % of sulphur weight with further mixing for 20-50 minutes.

EFFECT: stabilisation of product takes place, reaction of modification becomes non-reversible, and destruction is absent.

2 tbl, 5 ex

FIELD: construction.

SUBSTANCE: bulk additive for asphalt-concrete mixture, containing (wt %): thermoplastic polymer 71-90, ethylene copolymer, having at least one of the following functional groups: hydroxyl, carboxyl, carbonyl and epoxy 1-28, cellulose fibre 0.5-20. Bulk additive for asphalt-concrete mixture, characterized by the fact that it is obtained by processing the aseptic cardboard package Tetra Pak and contains (wt %): polyethylene 75-88, ethylene copolymer with methacrylic acid 6-15, cellulose fibre 2-10, granulated aluminium foil 2-20. Asphalt-concrete mixture, containing (wt %): rubble of fractions of 5-40 mm 38-80, sand 5.0-53, mineral powder 3.8-20, bitumen 4.0-7.5, granular additive 0.4-1.0 indicated above.

EFFECT: simplification of technology, increase of strength, increase of resistance to cyclic loads.

6 cl, 4 tbl

FIELD: chemistry.

SUBSTANCE: invention refers to bitumens, particularly bituminous-polymer compositions used in industry and/or road construction. Producing a bitumen/polymer composition uses a mother solution free from mineral oil, containing at least one herbal and/or animal oil, copolymer 20 to 50 wt % based on conjugated diene units and aromatic monovinyl hydrocarbon units, in relation to the mother solution weight, containing or free from at least one cross-linking agent, wherein the above herbal and/or animal oil is an acid; an acid value measured according to NF EN ISO 660 standard makes from 50 to 300 mg potassium hydroxide/g.

EFFECT: this mother solution characterised by the very high concentration of the polymer is stable and does not gelatinise that enables dissolving and using it for producing the cross-linked bitumen/polymer compositions and then bitumen mixtures.

15 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: method is carried out via atmospheric oxygen oxidation of a mixture of tar or a product of mixing tar with a 5th vacuum cut of a masout vacuum distillation apparatus with asphaltite from the process of propane deasphalting of tar with the ratio of tar or product of mixing tar with a 5th vacuum distillation cut:asphaltite of 30:70 to 50:50 wt %, followed by blending the oxidised asphaltite-containing mixture with straight-run tar, with the ratio of the oxidised mixture:tar of 55:45 to 40:60 wt %, to obtain an end product of the required quality.

EFFECT: method enables to obtain high-quality road bitumen of different classes, recycle asphaltite - a by-product of the process of propane deasphalting of tar.

2 cl, 2 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: method includes oxidising bitumen raw material with relative viscosity RV580=60÷100c to obtain a well-oxidised product with a melting point in the range of 80-110°C, followed by blending thereof with straight-run tar RV58060c in concentration of 45-60 wt % to obtain the desired road bitumen with elasticity of not less than 35%.

EFFECT: improved longevity.

1 tbl, 3 ex

FIELD: process engineering.

SUBSTANCE: invention relates to construction materials and can be used for road construction, roofing, insulating and sealing jobs. In compliance with this invention, the mix of rubber chips and bitumen is activated by ultrasound at the following ratio, wt %: rubber chips - 13-15, bitumen making the rest. If required, rubber chips are introduced to bitumen heated to 180°C in the mixer. Said mix is missed for at least 10 minutes and activated by ultrasound unless rubber-bitumen compound results.

EFFECT: better softening and brittleness temperatures under severe climatic conditions.

7 cl, 1 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: invention relates to additives for use in bitumen and polymer-modified bitumen. The additive is obtained by mixing the following: (a) sulphur, (b) vulcanised rubber, e.g. vulcanised rubber wastes, (c) a fatty acid and (d) bitumen.

EFFECT: use of said additive to obtain, for very limited gas emissions, an elastomer-containing bitumen product which is particularly suitable for producing bitumen-coated material with improved processing properties, such as asphalt concrete.

13 cl, 1 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to production of road construction materials and can be used in repairing airfield and road surfaces, particularly for rapid and emergency restoration of damaged areas on asphalt pavements. A cold bitumen-mineral mixture, which contains mineral filler and binder, which includes bitumen, diesel fuel, tall oil and polyethylene polyamine, where the binder further includes fine wollastonite with particle size of 40-100 mcm, and the mineral filler used is any rock material with strength of not less than 60 MPa and grain size of 3-8 mm or 5-10 mm, with the following ratio of components, wt %: road bitumen 3.0-3.8, diesel fuel 0.8-1.3, tall oil 0.22-0.23, polyethylene polyamine 0.02-0.03, fine wollastonite 0.12-0.45, rock material - the balance.

EFFECT: high moisture resistance.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention refers to a method for producing cross-linked compositions of a polymer and bitumen with using no linking agent. The method for preparing the cross-linked compositions of the polymer and bitumen with using no linking agent provides at least one bitumen and at least one polymer composition containing at least 80 wt % of the polymer composition weight, diblock copolymer of monovinylaromatic hydrocarbon block and linked diene block having a molecular weight of 80000 g/mole or more and containing double-bond links in position 1-2 originating from the linked diene of 1.5% or more of the total weight of the linked diene links come in contact at 180°C to 220°C for a period of time of 8 h to 48 h. There are also declared versions of the method, versions of the cross-linked compositions of the polymer and bitumen, the method for producing the cross-linked stock solution with using no linking agent, and the cross-linked stock solution.

EFFECT: producing the cross-linked compositions of the polymer and bitumen possessing the equivalent or improved properties as compared to the compositions containing the linking agent.

25 cl, 3 tbl, 6 ex

FIELD: construction.

SUBSTANCE: in a cold method for obtaining asphalt concrete of increased strength for repair and construction of road pavements using mineral material in the form of crushed stone, sand by their being mixed with cement and bituminous emulsion, with further application of the obtained asphalt-concrete mix onto the road base and its compaction, mixing is performed at addition to the above said cold mineral material for 100 of its wt % subsequently in 40-90 seconds of the next components, wt %: cement - 3.0-6.0, nanocomposite additive with particle size of 50-300 nm, mainly 80-160 nm, which contains the following, parts by weight: active silicic acid 0.01-3 and latex based on styrene, ester of acrylic acid, butadiene, acrylonitrile, acrylic or methacrylic acid, their mixtures 1 (in terms of a dry substance) 0.075-0.25, cationic bituminous emulsion (in terms of bitumen) 2.0-5.0.

EFFECT: saving of energy resources and improving strength of asphalt concrete.

4 tbl, 5 ex, 4 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to field of producing compositions, which include modified sulphur, which can be applied for production of building materials - sulphuric concretes and sulphur-asphalt concretes, applied in different fields of building, including transport, hydrotechnical, hydromeliorative, etc. Method of obtaining modified sulphur consists in the fact, that melted sulphur is supplied into reactor at temperature 120-135°C, after that, salts of ammonium and/or potassium are introduced into reactor in quantity from 0.001 to 0.005 wt % of sulphur weight, mixed for 5-10 minutes, after which 5-ethylene-2-norbornen is introduced in quantity from 0.08 to 0.1 wt % of sulphur weight with further mixing for 20-50 minutes.

EFFECT: stabilisation of product takes place, reaction of modification becomes non-reversible, and destruction is absent.

2 tbl, 5 ex

FIELD: construction.

SUBSTANCE: bulk additive for asphalt-concrete mixture, containing (wt %): thermoplastic polymer 71-90, ethylene copolymer, having at least one of the following functional groups: hydroxyl, carboxyl, carbonyl and epoxy 1-28, cellulose fibre 0.5-20. Bulk additive for asphalt-concrete mixture, characterized by the fact that it is obtained by processing the aseptic cardboard package Tetra Pak and contains (wt %): polyethylene 75-88, ethylene copolymer with methacrylic acid 6-15, cellulose fibre 2-10, granulated aluminium foil 2-20. Asphalt-concrete mixture, containing (wt %): rubble of fractions of 5-40 mm 38-80, sand 5.0-53, mineral powder 3.8-20, bitumen 4.0-7.5, granular additive 0.4-1.0 indicated above.

EFFECT: simplification of technology, increase of strength, increase of resistance to cyclic loads.

6 cl, 4 tbl

FIELD: construction.

SUBSTANCE: black crushed rock is impregnated under pressure with deasphalting agent of heavy oil residues at its content of 40-80 wt % in extractant in supercritical fluid state at 113-140°C and 4.5-8 MPa. Said extract is propane, or butane or mix thereof. Impregnation of crushed stone is executed to water absorption of not over 0.7%.

EFFECT: reduced water absorption.

2 tbl, 9 ex

FIELD: construction.

SUBSTANCE: in the method of obtaining a hydrophobic additive for bitumen concrete mix which comprises mixing of oily slime with unslaked lime and the subsequent adding of a heated component, thorough mixing within 20 min. maximum with the subsequent unloading of the obtained granulated product, pre-dehydrated oil slime is used, which contain no more than 20% by weight of hydrocarbons and up to 10% by weight of water, where unslaked lime is added at their ratio 1:0.1-0.2 from the weight of the dehydrated mix, after mixing and obtaining of the uniform mix heated up to the temperature 70°C, the obtained mix is loaded into the high-speed granulator with the rotating rotor fitted with pins for material mixing heated up to the temperature 110-130°C the pre-heated road bitumen is added as a component at the temperature 120-150°C amounting 10-15% of the loaded mix weight, the mixing is conducted at the rotor rotation frequency 500 rpm and the linear speed of the rotor pins 6.5 m/s, therefore the granulated hydrophobic additive is obtained. The method of obtaining of bitumen concrete mix which is characterized by mixing of mixed ingredients heated granite macadam with the fraction up to 5 mm mixed with granite dust, bitumen and a hydrophobic additive named above, and the ration of mixed ingredients amounts: granite macadam with the fraction up to 5 mm mixed with granite dust, the granulated hydrophobic additive and bitumen amounts, %: (88-89):(6-6.5):(5-5.5).

EFFECT: improvement of hydrophobic properties.

2 cl, 6 ex

Asphaltic concrete // 2548625

FIELD: construction.

SUBSTANCE: invention relates to the road-building materials and can be used in the road and aerodrome construction for paving and erection of bases of highways, aerodromes, city streets and squares, roads of industrial enterprises. Asphaltic concrete, comprising the mineral portion, comprises the active agent of aluminium oxide Al2O3 with particle sizes of 10-100 nm in the amount of (0.05-0.20) pts. wt. above 100% of mineral part, added into the composition of mineral part of the original asphalt-concrete mix after premixing with mineral powder.

EFFECT: increase of the strength and water resistance.

3 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to production of road construction materials and can be used in repairing airfield and road surfaces, particularly for rapid and emergency restoration of damaged areas on asphalt pavements. A cold bitumen-mineral mixture, which contains mineral filler and binder, which includes bitumen, diesel fuel, tall oil and polyethylene polyamine, where the binder further includes fine wollastonite with particle size of 40-100 mcm, and the mineral filler used is any rock material with strength of not less than 60 MPa and grain size of 3-8 mm or 5-10 mm, with the following ratio of components, wt %: road bitumen 3.0-3.8, diesel fuel 0.8-1.3, tall oil 0.22-0.23, polyethylene polyamine 0.02-0.03, fine wollastonite 0.12-0.45, rock material - the balance.

EFFECT: high moisture resistance.

2 tbl

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