Asphalt concrete mix
The invention relates to the construction and can be used in the construction of the road asphalt-concrete pavements and bases. Effect: reduce the average and the true density of the asphalt mixture, simplifying the preparation of the mixture, reducing consumption of bitumen and expansion of the resource base. Asphalt mixture includes asphalt binder, aggregate, mineral powder and ebonite powder in a ratio of components in the mixture, wt.%: bitumen 4,0-8,0; placeholder 0-94; mineral powder 0-8; ebony babe 2-96, and the ratio of the mass of bitumen and aggregate surface ebony crumb less than or equal to 40 g/m2. table 1. The invention relates to the construction and can be used in the construction of the road asphalt-concrete pavements and bases.Known asphalt mixture comprising liquid bitumen, mineral powder and mineral filler (Manual on the construction of asphalt concrete pavements and bases for roads and airfields (SNiP 3.06.03-85, SNiP 3.06.06-88). - M.: Soundarya. - 1991. - S. 8, 12-17; Gezentsvey L. B. asphalt concrete. - M., 1960. - S. 138-139).The disadvantage of such mixtures is the duration of the process of formation at the coating mixture, including polymer-bitumen or complex organic binder, aggregate and mineral powder (hochman L. M., Kapanadze N. And. Stock to the viscous asphalt binders. - Roads, 1986. No. 5. - S. 19-21).Closest to the technical essence and the achieved result is an asphalt concrete mixture on the application number 2000118960/03 (019846) 04 26/26, 20.05.2002, 6 S., including asphalt binder, gravel, sand, mineral powder and ebony crumbs in the following ratio, wt.%: asphalt binder is a 4.5-6.5; gravel 50-54; sand 30-34; mineral powder 5,5-7,5; ebonite powder - rest.The problem to which the invention is directed, is to reduce the average and the true density of asphalt mixture; the facilitation of the preparation of the mixture; reducing consumption of bitumen; the expansion of raw materials.The essence of the claimed invention is that the coating mixture comprises a bitumen, aggregate, mineral powder and ebony crumbs in the following ratio of components, wt.%: bitumen 4.0-8.0; placeholder 0-94; mineral powder 0-8; ebony babe 2-96. The ratio of the quantity of bitumen to the total surface ebony crumbs should be no more than 40 g/m2.scoi true density ebony crumbs, compared with the density of the mineral components of the mixture. It also allows us to give the asphalt coating thermal insulation function, thereby reducing the depth of freezing road construction, and consequently increasing the operational stability of asphalt concrete pavement.In addition, the introduction of ebony crumbs leads to increased homogeneity of the structure of the asphalt due to the more intimate nature ebony aggregates and bitumen.In this case, when the load from mechanical and thermal damage in asphalt concrete is the reduction of internal stresses in the contact zones of the structure, which is typical for heterogeneous (by nature) the components of the mixture, resulting in a positive effect on the durability of asphalt concrete pavement.Introduction to asphalt mixture ebony crumbs with a ratio of less than or equal to 40 g/m2modifies the bitumen so that you can get nesliving mixture, regardless of its temperature and thereby to simplify the technology of preparation of the mixture due to the exclusion of the operation of its cooling by mixing.The increase in the uniformity of the mixture and bitumen modification allows one to decrease the possibility of using crumb as a mineral powder and filler.Using ebony crumbs allows to obtain economic benefit by reducing the cost of manufacture of the mixture, flow of bitumen and waste ebonite products.The possibility of practical implementation of the invention is confirmed by the following description of technology of preparation of the proposed asphalt mixture.Ebony crumbs made from waste plastic products by grinding in a hammer mill to obtain a particle size of less than 5 mm, the resulting scatter crumbs on a standard set of sieves and the obtained fractions crumbs are compositions with different amounts of the total surface.Asphalt concrete mix type DF prepared as follows. Bitumen, mineral powder and mineral filler is heated to a temperature of 150-160°C, ebonite powder is heated to a temperature of 110-120°C, then the components are batched and mixed in the following sequence: first, the bitumen is mixed with ebony crumbs, then injected mineral powder and mineral filler and continue mixing until a homogeneous mixture. The resulting mixture was stored in the tank with the purpose of cooling to 20°C.From the mixture obtained, deposits samples are shown in the table.The results show that:1. The proposed composition of the asphalt mixture was allowed to get a stock mixture without forced cooling with stirring them to cool;2. Getting ebony crumbs from waste plastic products, such as ebony boxes of batteries, allows, firstly, to solve the problem of recycling of waste plastic products, and secondly, to expand the raw material base for the preparation of a stock of asphalt mixes.
ClaimsMix asphalt, including asphalt binder, aggregate, mineral powder and ebonite powder, characterized in that the ratio of components in the mixture is, wt.%: bitumen 4,0-8,0; placeholder 0-94; mineral powder 0-8; ebony babe 2-96, and the ratio of the mass of bitumen and aggregate surface ebony crumb less than or equal to 40 g/m2.
FIELD: building industry, road building.
SUBSTANCE: invention proposes a binding agent for asphalt-concrete mixtures comprising a modifying agent as an organic binding agent and a filling agent. Agent comprises polyethylene and/or polystyrene waste ground to size 2-5 mm as a modifying agent, and highly dispersed carbonate or oxide powder as a filling agent and sulfur additionally wherein components are taken in the following ratio, wt.-%: bitumen, 30-75; indicated powder, 3-19; polyethylene and/or polystyrene waste, 1-2; sulfur, 20-50. Invention can be used for making road and sidewalk covers, building platforms, industrial object floors and waterproofing materials. Invention provides enhancing strength, waterproofing and reducing water saturation of asphalt-concrete.
EFFECT: improved properties of binding agent.
SUBSTANCE: activated mineral powder comprises mineral agent made of carbonate rocks and mixture of oil bitumen and surface-active substances that are composed of a mixture of raw tall oil, distillated tall oil, tall pitch at mass ratio 1:(0.4-0.66):(0.6-1.66) and slate oil or residue pyrolysis wood resin that constitutes 0-50 mass percents of the mixture. The powder is composed of, mass %, 97-99.5 of mineral agent and 0.5-3 of mixture of oil bitumen and surface active substances, the mass ratio of bitumen to surface-active substances ranging from 1:0.5 to 1:3.1.
EFFECT: improved physico-mechanical characteristics of asphalt-concrete.
1 cl, 5 ex, 1 tbl
FIELD: road-transport industry.
SUBSTANCE: method includes applying substance on asphalt-concrete mixture. As substance silicon-organic modifier is used, loss of which at 1 m2 of area of pre-placed on road asphalt-concrete mixture at temperature 80-100°C is no less than 0,3-0,5 kg. After applying modifier, asphalt-concrete mixture is rolled.
EFFECT: higher efficiency, no corrosive effect on metals, effective at temperature above -20°C.
2 cl, 3 tbl, 3 ex, 1 dwg
FIELD: manufacture of road-building materials.
SUBSTANCE: method is characterized by addition of wood fibers to mix, said fibers being obtained from wood crumb by drying it in ascending air flow at 120°C followed by breaking-down on mill with cribble-like blades. Prior to be charged into mixer, wood fibers are forced through dies with the aid of ventilator and, for their mixing, a mineral powder, bitumen, and a surfactant are first added into mixer, then stirred, and, in the course of stirring, wood fibers in common with broken stone and sand are charged into mixer.
EFFECT: reduced expenses on powder of mixes and improved their performance characteristics: compression strength and water resistance.
1 dwg, 1 tbl, 3 ex
FIELD: highway engineering, in particular paving upper layers building in all climatic regions.
SUBSTANCE: claimed bituminous concrete composition contains (mass %): lime chip of 5-20 mm fraction 35-45; petroleum viscous bitumen 5.0-5.5; mineral powder from dolomite or lime rocks 3-8; polymer additive 0.1-0.25 based on bitumen mass and balance: sand of 5 mm or less fraction. As said polymer additive polyethylene terephthalate in form of secondary plastic bottles is used.
EFFECT: bituminous concrete with improved structure-forming characteristics and increased water and heat resistance.
1 cl, 4 tbl, 1 ex
FIELD: motor road building and refreshment, in particular production of pavement coarse layers.
SUBSTANCE: claimed mixture contains (mass %): chipping of at most 15 mm grade 65-75; chipping breakage screening of 0-5 mm grade 17.0-23.5; mineral powder 3.0-5.0; bitumen 4.4-5.5; polymeric reinforcing additive 0.4-0.6; and black oil as plasticizer 0.2-0.5. Abovementioned polymeric reinforcing additive represents waste from pipeline waterproofing, namely waste from two layered waterproofing band of shrinkage material containing layer of adhesively active composition of melt adhesive based on polyethylene/vinyl acetate copolymer and layer of irradiation radiation cross-linked polyethylene irradiated with electron beam and coated with hot melt adhesive.
EFFECT: mixture of increased resistance, water resistance, and decreased swelling limit.
1 cl, 5 tbl, 1 ex
FIELD: road building materials.
SUBSTANCE: bitumen of specified brands is subjected to post-oxidation using air blowing at 200-230°C to achieve desired binder softening temperature, after which 12-15% solution of butadiene/styrene or butadiene synthetic rubber in mixture of kerosene and mazut at ratio (0.3-0.4):(0.7-0.6) is added to post-oxidized bitumen at 180-190°C and oxidation is then continued at the same temperature until desired brand of binding agent is obtained.
EFFECT: simplified technology, improved environmental condition, and improved physicochemical characteristics of product.
2 cl, 1 tbl
FIELD: construction of motor car roads.
SUBSTANCE: the invention is pertaining to construction of motor car roads and may be used for the construction of the upper layers of the highway coatings. The technical result of the invention is production of a stabilizing additive in the granular form capable to reduce not only disintegration a macadam-mastic asphalt-concrete mixtures, but also to increase their strength at 50°C (i.e. to improve their heat resistance),the factor of their durable water saturation and a adhesion power of the binder to the mineral materials. The polymeric-reinforcing granular stabilizer for macadam-mastic asphalt-concrete includes the bitumen and the polyamide fibers. At that in the capacity of the polymeric-reinforcing additive it contains the wastes of the pipeline hydro-insulation of ArmPEVA type representing the waste of the bilayered belt of a shrinking material used for insulation of pipes and consisting of a layer of the adhesive active composition of a glue-melt on the basis of an copolymer of ethylene with a vinyl acetate and a layer of the radiation-cross-linked polyethylene treated with electrons and with applied on it of the hot-melt adhesive, and in the capacity of an adhesive use surface-active substance of a cationic type - KADEM_BT, representing the cationic reactant made out of acids of vegetable or animal origin of the fraction of C16-C20 and a polyethylene polyamine at the following components ratio(in mass %): bitumen BND 60/90 - 28.0-38.0, a polyamide fiber - 31.0-35.0, the indicated polymeric-reinforcing additive - 30.0-35.0, the indicated surface-active substance - 1.0-2.0.
EFFECT: the invention ensures production of a stabilizing additive in the granular form capable to reduce not only disintegration a macadam-mastic asphalt-concrete mixtures, but also to increase their strength at 50°C.
1 cl, 1 ex, 6 tbl
FIELD: building industry; petrochemical industry; the process of production of the stabilizing agents for the macadam-mastic asphalt concrete.
SUBSTANCE: the invention is pertaining to the development of the process of production of the stabilizing agents for the macadam-mastic asphalt concretes used, in particular, at making the highways coatings made on the basis of the macadam-mastic asphalt. The technical result is development of the stabilizing additive for the asphalt concrete produced on the basis of the cheaper components and capable to sorb the binding in the asphalt concrete mixtures, in particular, in the macadam-mastic asphalt concretes at the technological temperatures during storage and transportation of the asphalt concrete mixture produced in the granulated form suitable for transportation and direct injection in the macadam-mastic asphalt concretes on the sites of its application. The stabilizing additive in the form of the granules for the macadam-mastic asphalt concretes contains the organic binding and the structure-forming agent. At that the organic binding is selected from the group including tar, bitumen or bitumen emulsion and in the capacity of the structure-forming agent use the basement lint and-or the lint representing the waste of the cotton production at the following ratio of components in the composition (in mass %): the indicated waste - 60-90, the organic binding - the rest up to 100 %.
EFFECT: the invention ensures production of the stabilizing additive based on the cheaper components and capable to sorb the binding in the macadam-mastic asphalt concretes at the technological temperatures during storage and transportation.
2 cl, 2 tbl
FIELD: building industry; methods of production of the stabilizing additives for the macadam-mastic asphalt-concrete mixtures.
SUBSTANCE: the invention is pertaining to the field of building industry, in particular, to the method of production of the stabilizing additive for the macadam-mastic asphalt-concrete mixture. The technical result: the invention ensures the optimum temperatures and the time of laying, increased efficiency of the macadam-mastic asphalt-concrete mixture laying and compaction due to improvement of the quality of the stabilizing additive. The method of production of the stabilizing additive used for the macadam-mastic asphalt-concrete mixture production provides for usage of the substance with the fibrous structure and its granulation. At that in the capacity of the substance with the fibrous structure use the fibrous hydrosilicate of magnesium; before the granulation it is mixed with water, and after the granulation the granules are structurized on the vibrating inclined tray at the vibration amplitude of 24-26 mm high and at the vibration frequency of 230-250 per a minute with the subsequent drying.
EFFECT: the invention ensures the macadam-mastic asphalt-concrete mixture optimum temperatures and the time of laying, increased efficiency of the mixture laying and compaction due to improvement of the quality of the stabilizing additive.
3 cl, 1 tbl, 1 dwg