CN117534369A - High-water-permeability solid waste environment-friendly rubber asphalt material and preparation method thereof - Google Patents
High-water-permeability solid waste environment-friendly rubber asphalt material and preparation method thereof Download PDFInfo
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- CN117534369A CN117534369A CN202311581320.6A CN202311581320A CN117534369A CN 117534369 A CN117534369 A CN 117534369A CN 202311581320 A CN202311581320 A CN 202311581320A CN 117534369 A CN117534369 A CN 117534369A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 157
- 229920001971 elastomer Polymers 0.000 title claims abstract description 137
- 239000005060 rubber Substances 0.000 title claims abstract description 137
- 239000000463 material Substances 0.000 title claims abstract description 104
- 239000002910 solid waste Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 112
- 230000035699 permeability Effects 0.000 claims abstract description 95
- 239000000843 powder Substances 0.000 claims abstract description 57
- 239000003607 modifier Substances 0.000 claims abstract description 52
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 50
- 239000011159 matrix material Substances 0.000 claims abstract description 48
- 239000003381 stabilizer Substances 0.000 claims abstract description 48
- 239000004575 stone Substances 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 33
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 41
- 239000002174 Styrene-butadiene Substances 0.000 claims description 34
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 26
- 239000003960 organic solvent Substances 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000004408 titanium dioxide Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000004115 Sodium Silicate Substances 0.000 claims description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 9
- 229920005549 butyl rubber Polymers 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 238000007885 magnetic separation Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 4
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 3
- 239000002199 base oil Substances 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000006148 magnetic separator Substances 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000004901 spalling Methods 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 11
- QXOXHPTYHCESTD-UHFFFAOYSA-N SBS Chemical compound SBS QXOXHPTYHCESTD-UHFFFAOYSA-N 0.000 description 7
- 239000002808 molecular sieve Substances 0.000 description 6
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 6
- 239000002344 surface layer Substances 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 239000012466 permeate Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 244000239659 Eucalyptus pulverulenta Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 239000012745 toughening agent Substances 0.000 description 1
- 239000010920 waste tyre Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/20—Waste materials; Refuse organic from macromolecular compounds
- C04B18/22—Rubber, e.g. ground waste tires
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/08—Fats; Fatty oils; Ester type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
- C04B24/085—Higher fatty acids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00008—Obtaining or using nanotechnology related materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a high-water-permeability solid waste environment-friendly rubber asphalt material and a preparation method thereof, and relates to the technical field of road engineering. The high-water-permeability solid waste environment-friendly rubber asphalt preparation material comprises the following components: 100-140 parts of matrix asphalt, 15-25 parts of rubber powder, 0.5-1 part of SBR, 10-20 parts of high water permeability modifier, 1-3 parts of stabilizer, 0.5-1 part of anti-stripping agent and 2500-3500 parts of stone. According to the method, a rough surface microstructure is formed on the surface of the rubber asphalt by adding the high-permeability modifier, and the surface microstructure is used together with stone, so that the porosity of the pavement is increased, the water permeability of the pavement reaches 18% -22%, water is effectively permeated under the pavement, the problems of accumulated water, wet skid, accumulated water and the like of the pavement are avoided, and the surface microstructure can protect the rubber asphalt from being contacted with other substances, so that the self-cleaning effect is achieved.
Description
Technical Field
The invention relates to the technical field of road engineering, in particular to a high-water-permeability solid waste environment-friendly rubber asphalt material and a preparation method thereof.
Background
The rubber asphalt is an asphalt cementing material processed by waste tires, has the performances of high-temperature stability, low-temperature flexibility, ageing resistance, fatigue resistance, water damage resistance and the like, is an ideal environment-friendly pavement material, and is mainly applied to stress absorbing layers and surface layers in road structures. It has the performances of high-temperature stability, low-temperature flexibility, ageing resistance, fatigue resistance, water damage resistance and the like, can effectively prolong the service life of the pavement, reduce noise, lighten vibration, improve thermal stability and thermal cracking property and improve icing resistance.
The prior patent application publication CN113636785A specifically discloses a permeable asphalt mixture, which comprises the following components in parts by weight: 15-25 parts of mineral powder; 2.5-5 parts by mass of slaked lime powder; 450-500 parts by mass of crushed stone with the grading of 0-16; 25-30 parts of asphalt; 1-3 parts of a toughening agent; 5-10 parts of rubber powder; 50-70 parts by mass of 4A molecular sieve. Through adding rubber powder and 4A molecular sieve, the water permeable asphalt mixture keeps better water permeability under the synergistic effect of the rubber powder and the 4A molecular sieve, and meanwhile, the ageing resistance is improved.
In the permeable asphalt mixture, the prepared rubber asphalt has better water permeability by adding the rubber powder and the 4A molecular sieve. The 4A molecular sieve has strong adsorption capacity and can effectively adsorb and retain moisture, and the 4A molecular sieve can be added into the rubber asphalt to prevent the moisture from evaporating and maintain the wettability of the asphalt. However, the rubber asphalt prepared by the method cannot pass through water and cannot permeate the pavement water body such as rainwater, spring water or underground water to the bottom or the inside of an object, so that the effects of adjusting indoor humidity, reducing water stain retention and the like are achieved.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a high-water-permeability solid waste environment-friendly rubber asphalt material, which solves the problems of complex production process, low water permeability and high water permeability and instability.
(II) technical scheme
In order to achieve the above purpose, in a first aspect, the present application provides a high water permeability solid waste environment-friendly rubber asphalt material and a preparation method thereof, which adopts the following technical scheme:
a high-permeability solid waste environment-friendly rubber asphalt material is prepared from a high-permeability modifier and the rest raw materials. The preparation of the high water permeability modifier is characterized in that: 1-3 parts of nanoscale titanium dioxide, 2-5 parts of organic solvent, 2-4 parts of sodium silicate, 1-2 parts of hydrochloric acid, 2-3 parts of SBS and 3-5 parts of sodium stearate; and is prepared by the following method:
a1: adding the nano-scale titanium dioxide and an organic solvent into a stirrer, and stirring for 5min to prepare nano-scale titanium dioxide dispersion;
a2: adding sodium silicate into the nano-scale titanium dioxide dispersion liquid, continuously stirring for 5min, and adding hydrochloric acid to obtain a mixed liquid containing silicon dioxide and titanium hydroxide;
a3: adding SBS and sodium stearate into the mixed solution, heating to 80-90 ℃, and stirring for 10min to obtain the high water permeability modifier.
Preferably, the high water permeability modifier is obtained by reacting nanoscale titanium dioxide with sodium silicate and then mixing the reaction product with SBS and sodium stearate.
The sodium silicate and the nano titanium dioxide have excellent properties of improving the water resistance and aging resistance of the material, and the sodium silicate and the nano titanium dioxide react under certain conditions to obtain silicon dioxide and titanium hydroxide. The silicon dioxide and the titanium hydroxide have good water permeability, can increase the water permeability and wettability of the materials, improve the strength, durability, freeze thawing resistance and the like of the materials, can form a rough micro-nano structure on the surface of the rubber asphalt, and simultaneously enhance the adhesion, weather resistance and load resistance of the materials by combining and utilizing the surface activity of sodium stearate and the adhesive effect of SBS, thereby preparing the rubber asphalt with high water permeability and good viscosity, flexibility and stability.
In a second aspect, the application provides a preparation method of a high-water-permeability solid waste environment-friendly rubber asphalt material, which adopts the following technical scheme:
the preparation method of the high-water-permeability solid waste environment-friendly rubber asphalt material comprises the following steps of: 100-140 parts of matrix asphalt, 15-25 parts of rubber powder, 0.5-1 part of SBR, 10-20 parts of high water permeability modifier, 1-3 parts of stabilizer, 0.5-1 part of anti-stripping agent and 2500-3500 parts of stone.
Specifically, the SBR rubber modifier is added. The polymer stabilizer can form a firmer connection with asphalt, improves the cracking resistance and the shearing resistance of the mixture, and simultaneously can also improve the elastic modulus and the stability of the mixture.
Preferably, the mass ratio of the matrix asphalt to the rubber powder to the high water permeability modifier is 20-28:3-5:2-4.
Preferably, the organic solvent is any one or any two of extract oil, base oil and aromatic hydrocarbon oil, which are mixed according to the ratio of 1:1.
Preferably, the stabilizer is butyl rubber.
The butyl rubber has better stability at high temperature, can be used for a long time at 100 ℃ or lower, has better chemical stability and has stronger corrosion resistance to chemical property. Meanwhile, the butyl rubber has good shock absorbing capacity due to the lack of double bonds and high distribution density of side chain methyl groups in the molecular structure.
Preferably, the anti-spalling agent is an asphalt anti-spalling agent of the type XT-1.
The specific explanation is that the XT-1 asphalt anti-stripping agent is applicable to various asphalt and stone materials, can obviously improve the adhesiveness of asphalt and stone materials, and effectively prevent early damages such as rutting, stripping, loosening and the like. Meanwhile, the asphalt can permeate to the surface of aggregate to form a firm chemical adsorption film, so that the adhesion of asphalt and stone is realized, and the wear resistance and durability of the pavement are enhanced.
Preferably, the high water permeability modifier is mainly composed of nanoscale titanium dioxide, sodium silicate, SBS and sodium stearate.
The preparation method of the high-water-permeability solid waste environment-friendly rubber asphalt material comprises the following steps:
s1: asphalt No. 70 was selected as the base asphalt material.
S2: the matrix asphalt was added to the stirred tank and heated to 200 ℃.
S3: adding the modifier with high water permeability, SBR and rubber powder in sequence into a stirring tank, and stirring for 30min. Adding stabilizer, and stirring and mixing for 30min.
S4: and (3) putting the mixture obtained in the step (S3) into a colloid mill for shearing and grinding for 120min, and then putting the mixture into a finished product tank for development for 60min to obtain the high-water-permeability solid waste environment-friendly rubber asphalt material.
S5: and (3) placing the prepared modified rubber asphalt material and the stone with the particle size of 10-20mm after sieving into a mixing building for mixing for 15min, so as to obtain the rubber asphalt mixture which can be directly used for construction.
Preferably, a high water permeability modifier material is added.
The concrete explanation is that the high water permeability modifier prepared by the method can form a rough surface microstructure on the rubber asphalt surface layer, so that the porosity of the pavement is increased, the water permeability of the pavement is greatly increased, and the effect of high water permeability is achieved. The nano microstructure has an anti-adhesion effect, so that water drops cannot contact with the rubber asphalt, and a self-cleaning effect can be achieved. Meanwhile, the prepared rubber asphalt material has high water permeability and excellent viscosity, flexibility, stability, weather resistance, wear resistance, durability and shock absorption capacity through adding SBR, a stabilizer and an anti-stripping agent.
Preferably, the rubber powder is prepared from waste and old truck tires. The method comprises the following steps:
b1: putting the waste and old truck tires into a tire crusher, and crushing the truck tires to 30 mm;
b2: putting the crushed tire into a steel wire separator to separate rubber from steel wires, and processing the rubber into colloidal particles with the particle size of 15 mm;
b3: separating steel wires in the mixture by magnetic separation for 30min through a magnetic separator;
b4: crushing the mixture of the separated steel wires to 5mm, sorting by using a rolling screen, and re-crushing the mixture which does not accord with the particle size;
b5: placing the crushed mixture in a fiber separator to remove other impurities such as fibers;
b6: and (3) after the capillary steel wires are removed by secondary magnetic separation, putting the rubber with the impurities removed into a pulverizer to grind the particles into powder of 20 meshes.
Preferably, the weight of the modified rubber asphalt is 5-6% of the weight of the stone.
(III) beneficial effects
The invention provides a high-water-permeability solid waste environment-friendly rubber asphalt material and a preparation method thereof, and the high-water-permeability solid waste environment-friendly rubber asphalt material has the following beneficial effects:
(1) According to the high-water-permeability solid waste environment-friendly rubber asphalt material and the preparation method thereof, silicon dioxide and titanium hydroxide are obtained through the reaction of sodium silicate and nano titanium dioxide, a coarse micro-nano structure is formed on the surface of the rubber asphalt, and meanwhile, the combination of the sodium stearate surface activity and the SBS adhesion is enhanced, so that the rubber asphalt with high water permeability and good viscosity, flexibility and stability is prepared.
(2) According to the high-water-permeability solid waste environment-friendly rubber asphalt material and the preparation method thereof, the butyl rubber is added to improve the high-temperature stability and low-temperature crack resistance of the rubber asphalt, and the anti-stripping agent is added to improve the adhesiveness of the rubber asphalt, so that early damage of rutting, stripping, loosening and the like is effectively improved, the wear resistance, durability and stability of a pavement are enhanced, and the service life of the pavement is prolonged.
(3) According to the high-water-permeability solid waste environment-friendly rubber asphalt material and the preparation method thereof, the prepared rubber asphalt material has high water permeability and excellent viscosity, flexibility, stability, weather resistance, wear resistance, durability and shock absorption capacity through the addition of the high water permeability modifier, the SBR, the stabilizer and the anti-stripping agent. The coarse nano microstructure of the rubber asphalt surface layer is matched with stone, so that the void ratio of the prepared material is greatly increased, the water permeability of the pavement is improved, and the water is effectively permeated into the ground, so that the effect of high water permeability is achieved.
Detailed Description
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Preparation examples 1 to 3
The high water permeability modifier comprises the following components in parts by weight as shown in the table 1 and is prepared by the following preparation method:
a1: adding the nano-scale titanium dioxide and the organic solvent into a stirrer, and stirring for 5min to prepare the nano-scale titanium dioxide dispersion liquid.
A2: adding sodium silicate into the nano-scale titanium dioxide dispersion liquid, continuously stirring for 5min, and adding hydrochloric acid to obtain a mixed liquid containing silicon dioxide and titanium hydroxide.
A3: adding SBS and sodium stearate into the mixed solution, heating to 80-90 ℃, and stirring for 10min to obtain the high water permeability modifier.
Table 1: the materials and the mass parts thereof in preparation examples 1 to 3
Example 1
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 136 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 15 parts of high water permeability modifier, 3 parts of stabilizer, 0.5 part of anti-stripping agent and 2858 parts of stone.
The preparation method of the high-water-permeability solid waste environment-friendly rubber asphalt material comprises the following steps:
s1: asphalt No. 70 was selected as the base asphalt material.
S2: the matrix asphalt was added to the stirred tank and heated to 200 ℃.
S3: adding the modifier with high water permeability, SBR and rubber powder in sequence into a stirring tank, and stirring for 30min. Adding stabilizer, and stirring and mixing for 30min.
S4: and (3) putting the mixture obtained in the step (S3) into a colloid mill for shearing and grinding for 120min, and then putting the mixture into a finished product tank for development for 60min to obtain the high-water-permeability solid waste environment-friendly rubber asphalt material.
S5: and (3) placing the prepared modified rubber asphalt material and the stone with the particle size of 10-20mm after sieving into a mixing building for mixing for 15min, so as to obtain the rubber asphalt mixture which can be directly used for construction.
Description: the organic solvent is any one or two of extract oil, base oil and aromatic hydrocarbon oil, which are mixed according to the ratio of 1:1. The high water permeability modifier is prepared in preparation example 2.
The rubber powder is prepared from waste and old truck tires: firstly, placing waste heavy duty tires in a tire crusher, and crushing the waste heavy duty tires to 30 mm; the broken tyre is put into a steel wire separator to separate rubber from steel wires, and is processed into colloidal particles with the particle size of 15 mm; then separating steel wires in the mixture through magnetic separation for 30min by a magnetic separator; crushing the mixture of the separated steel wires to 5mm, sorting by using a rolling screen, and re-crushing the mixture which does not accord with the particle size; then placing the crushed mixture into a fiber separator to remove other impurities such as fibers; and (3) after the capillary steel wires are removed by secondary magnetic separation, putting the rubber with the impurities removed into a pulverizer to grind the particles into powder of 20 meshes.
Example 2
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 136 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 12 parts of high water permeability modifier, 3 parts of stabilizer, 0.5 part of anti-stripping agent and 2858 parts of stone.
The preparation procedure was as described in example 1, except that the mass part of the organic solvent was 3 parts by mass.
Example 3
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 136 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR (styrene butadiene rubber), 15 parts of high water permeability modifier, 2 parts of stabilizer, 0.5 part of anti-stripping agent and 2858 parts of stone.
Preparation procedure reference example 1, differing from example 1 in that the mass part of the stabilizer was 2 parts by mass.
Example 4
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 136 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR (styrene butadiene rubber), 15 parts of high water permeability modifier, 3 parts of stabilizer, 1 part of anti-stripping agent and 2858 parts of stone.
Preparation procedure reference example 1, differing from example 1 in that the amount of anti-spalling agent by mass was 1 part by mass.
Example 5
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 136 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 12 parts of high water permeability modifier, 2 parts of stabilizer, 0.5 part of anti-stripping agent and 2858 parts of stone.
The preparation procedure was as described in example 1, except that the organic solvent was 3 parts by mass and the stabilizer was 2 parts by mass.
Example 6
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 136 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR (styrene butadiene rubber), 15 parts of high water permeability modifier, 2 parts of stabilizer, 1 part of anti-stripping agent and 2858 parts of stone.
Preparation procedure referring to example 1, the difference from example 1 is that the stabilizer mass amount is 2 parts by mass and the anti-spalling agent mass amount is 1 part by mass.
Example 7
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 136 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR (styrene butadiene rubber), 12 parts of high water permeability modifier, 3 parts of stabilizer, 1 part of anti-stripping agent and 2858 parts of stone.
The preparation procedure was as described in example 1, except that the organic solvent was 3 parts by mass and the anti-spalling agent was 1 part by mass, respectively.
Example 8
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 136 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR (styrene butadiene rubber), 12 parts of high water permeability modifier, 2 parts of stabilizer, 1 part of anti-stripping agent and 2858 parts of stone.
The preparation procedure was as described in example 1, except that the organic solvent was 3 parts by mass, the stabilizer was 2 parts by mass, and the anti-spalling agent was 1 part by mass.
Example 9
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 15 parts of high water permeability modifier, 3 parts of stabilizer, 0.5 part of anti-stripping agent and 3100 parts of stone.
Preparation procedure reference example 1, differing from example 1 in that the mass ratio of matrix bitumen to gum powder was 20:4.
Example 10
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 12 parts of high water permeability modifier, 3 parts of stabilizer, 0.5 part of anti-stripping agent and 3100 parts of stone.
Preparation procedure referring to example 1, the difference from example 1 is that the mass ratio of matrix asphalt to powdered gum is 20:4 and the mass of organic solvent is 3 parts by mass.
Example 11
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 15 parts of high water permeability modifier, 2 parts of stabilizer, 0.5 part of anti-stripping agent and 3100 parts of stone.
Preparation procedure reference example 1, which differs from example 1 in that the mass fraction of matrix bitumen to gum powder is 20:4 and the mass fraction of stabilizer is 2 parts by mass.
Example 12
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 15 parts of high water permeability modifier, 3 parts of stabilizer, 1 part of anti-stripping agent and 3100 parts of stone.
Preparation procedure referring to example 1, the difference from example 1 is that the mass portion of matrix asphalt to the mass portion of binder powder is 20:4 and the mass portion of anti-spalling agent is 1 part by mass.
Example 13
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 12 parts of high water permeability modifier, 2 parts of stabilizer, 0.5 part of anti-stripping agent and 3100 parts of stone.
The preparation procedure is described in reference to example 1, which differs from example 1 in that the mass ratio of matrix bitumen to gum powder is 20:4, the mass fraction of organic solvent is 3 parts by mass and the mass fraction of stabilizer is 2 parts by mass.
Example 14
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR (styrene butadiene rubber), 15 parts of high water permeability modifier, 2 parts of stabilizer, 1 part of anti-stripping agent and 3100 parts of stone.
Preparation procedure referring to example 1, the difference from example 1 is that the mass ratio of matrix asphalt to powder was 20:4, the mass of stabilizer was 2 parts by mass, and the mass of anti-spalling agent was 1 part by mass.
Example 15
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 12 parts of high water permeability modifier, 3 parts of stabilizer, 1 part of anti-stripping agent and 3100 parts of stone.
Preparation procedure referring to example 1, the difference from example 1 is that the mass ratio of matrix asphalt to powdered rubber is 20:4, the mass of organic solvent is 3 parts by mass, and the mass of anti-spalling agent is 1 part by mass.
Example 16
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 12 parts of high water permeability modifier, 2 parts of stabilizer, 1 part of anti-stripping agent and 3100 parts of stone.
The preparation procedure was as described in example 1, except that the mass ratio of matrix asphalt to binder powder was 20:4, the mass of the organic solvent was 3 parts, the mass of the stabilizer was 2 parts, and the mass of the anti-spalling agent was 1 part.
Example 17
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 100 parts of matrix asphalt, 25 parts of rubber powder, 1 part of SBR, 15 parts of high water permeability modifier, 3 parts of stabilizer, 0.5 part of anti-stripping agent and 2730 parts of stone.
Preparation procedure reference example 1, differing from example 1 in that the mass ratio of matrix bitumen to gum powder was 20:5.
Example 18
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 12 parts of high water permeability modifier, 3 parts of stabilizer, 0.5 part of anti-stripping agent and 2730 parts of stone.
Preparation procedure referring to example 1, the difference from example 1 is that the mass ratio of matrix asphalt to powdered gum is 20:5 and the mass of organic solvent is 3 parts by mass.
Example 19
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 15 parts of high water permeability modifier, 2 parts of stabilizer, 0.5 part of anti-stripping agent and 2730 parts of stone.
Preparation procedure referring to example 1, the difference from example 1 is that the mass ratio of matrix asphalt to powder was 20:5 and the mass of stabilizer was 2 parts by mass.
Example 20
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 15 parts of high water permeability modifier, 3 parts of stabilizer, 1 part of anti-stripping agent and 2730 parts of stone.
Preparation procedure referring to example 1, the difference from example 1 is that the mass ratio of matrix asphalt to binder powder is 20:5 and the mass of anti-spalling agent is 1 part by mass.
Example 21
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 12 parts of high water permeability modifier, 2 parts of stabilizer, 0.5 part of anti-stripping agent and 2730 parts of stone.
The preparation procedure is described in reference to example 1, which differs from example 1 in that the mass ratio of matrix bitumen to gum powder is 20:5, the mass fraction of organic solvent is 3 parts by mass and the mass fraction of stabilizer is 2 parts by mass.
Example 22
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 15 parts of high water permeability modifier, 2 parts of stabilizer, 1 part of anti-stripping agent and 2730 parts of stone.
Preparation procedure referring to example 1, the difference from example 1 is that the mass ratio of matrix asphalt to powder was 20:5, the mass of stabilizer was 2 parts by mass, and the mass of anti-spalling agent was 1 part by mass.
Example 23
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 12 parts of high water permeability modifier, 3 parts of stabilizer, 1 part of anti-stripping agent and 2730 parts of stone.
Preparation procedure referring to example 1, the difference from example 1 is that the mass ratio of the base asphalt to the rubber powder is 20:5, the mass of the organic solvent is 3 parts by mass, and the mass of the anti-spalling agent is 1 part by mass.
Example 24
In particular to a high-water permeability solid waste environment-friendly rubber asphalt material which is prepared from the following materials: 120 parts of matrix asphalt, 24 parts of rubber powder, 1 part of SBR, 12 parts of high water permeability modifier, 2 parts of stabilizer, 1 part of anti-stripping agent and 2730 parts of stone.
The preparation procedure was as described in example 1, except that the ratio of the mass parts of the matrix asphalt to the mass parts of the binder powder was 20:5, the mass parts of the organic solvent was 3 mass parts, the mass parts of the stabilizer was 2 mass parts, and the mass parts of the anti-spalling agent was 1 mass part.
Comparative example
Comparative example 1
Comparative example 1, identical to example 1, differs in that: butyl rubber was replaced with polyvinyl alcohol.
Comparative example 2
Comparative example 1, identical to example 1, differs in that: no anti-spalling agent was added.
Comparative example 3
Comparative example 1, identical to example 1, differs in that: no high water permeability modifier is added.
Various parameters of a high water permeability solid waste environment-friendly rubber asphalt material of examples 1-24 and comparative examples 1-3 were recorded respectively, and the following results were obtained, specifically, see tables 2 and 3:
table 2: examples 1-24 and comparative examples 1-3 each test parameters were compared to each other
Table 3: examples 1-24 and comparative examples 1-3 each test parameters were compared to each other
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According to the comparison of the test data of the examples and the comparative examples in tables 2 and 3, the high-water-permeability solid waste environment-friendly rubber asphalt material prepared by the technical scheme is stable at high temperature, has good cracking resistance at low temperature, and has excellent viscosity and flexibility, so that the stability of the pavement is increased, and the service life of the pavement is prolonged.
The porosity in asphalt is increased by adding the high water permeability modifier, so that the asphalt can better permeate water. Compared with the traditional rubber asphalt, the high-permeability solid waste environment-friendly rubber asphalt material can permeate water into the ground more quickly, so that groundwater is effectively supplemented, the burden of a municipal drainage system is lightened, the municipal hydrologic environment is improved, and the automatic cleaning capability is achieved.
The high-water permeability modifier prepared by the method forms a rough surface nano microstructure on the surface layer of the rubber asphalt, and meanwhile, the rubber asphalt has good viscosity, flexibility and stability. The pavement water permeability is improved by matching with stones, so that the pavement void ratio is increased, the water permeability of the pavement is improved, and the water is effectively permeated into the ground, thereby achieving the effect of high water permeability.
The rubber asphalt material prepared by adding the high water permeability modifier, SBR, the stabilizer and the anti-stripping agent has high water permeability. A rough nanometer microstructure of the rubber asphalt surface layer,
meanwhile, the high-water-permeability solid waste environment-friendly rubber asphalt material has better viscosity, flexibility, stability, weather resistance, wear resistance, durability and shock absorption capacity. By adding SBR, butyl rubber and anti-stripping agent, the stability, wear resistance and fatigue resistance of the high-water-permeability solid waste environment-friendly rubber asphalt material are obviously improved. The pavement can better bear repeated rolling and stress changes of vehicles, and the service life of the pavement is prolonged.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A high-water permeability solid waste environment-friendly rubber asphalt material is characterized in that: is made of the following materials: 100-140 parts of matrix asphalt, 15-25 parts of rubber powder, 0.5-1 part of SBR (styrene butadiene rubber), 10-20 parts of high water permeability modifier, 1-3 parts of stabilizer, 0.5-1 part of anti-stripping agent and 2500-3500 parts of stone;
the high water permeability modifier consists of 1-3 parts by mass of nano-scale titanium dioxide, 2-5 parts by mass of organic solvent, 2-4 parts by mass of sodium silicate, 1-2 parts by mass of hydrochloric acid, 2-3 parts by mass of SBS and 3-5 parts by mass of sodium stearate.
2. The high-water-permeability solid waste environment-friendly rubber asphalt material according to claim 1, which is characterized in that: the organic solvent is any one or two of extract oil, base oil and aromatic hydrocarbon oil, which are mixed according to a ratio of 1:1.
3. The high-water-permeability solid waste environment-friendly rubber asphalt material according to claim 1, which is characterized in that: the mass ratio of the matrix asphalt to the rubber powder to the high water permeability modifier is 20-28:3-5:2-4.
4. The high-water-permeability solid waste environment-friendly rubber asphalt material according to claim 1, which is characterized in that: the stabilizer is butyl rubber; the anti-stripping agent is an XT-1 asphalt anti-stripping agent.
5. The high-water-permeability solid waste environment-friendly rubber asphalt material according to claim 1, which is characterized in that: the preparation method of the high water permeability modifier specifically comprises the following steps:
a1: adding the nano-scale titanium dioxide and an organic solvent into a stirrer, and stirring for 5min to prepare nano-scale titanium dioxide dispersion;
a2: adding sodium silicate into the nano-scale titanium dioxide dispersion liquid, continuously stirring for 5min, and adding hydrochloric acid to obtain a mixed liquid containing silicon dioxide and titanium hydroxide;
a3: adding SBS and sodium stearate into the mixed solution, heating to 80-90 ℃, and stirring for 10min to obtain the high water permeability modifier.
6. The high-water-permeability solid waste environment-friendly rubber asphalt material as defined in claim 5, wherein the high-water-permeability solid waste environment-friendly rubber asphalt material is characterized in that: the nano-scale titanium dioxide and sodium silicate are mixed and reacted firstly and then mixed with other materials.
7. The method for preparing the high-water-permeability solid waste environment-friendly rubber asphalt material according to any one of claims 1 to 6, which is characterized by comprising the following steps: the method comprises the following steps:
s1, selecting No. 70 asphalt as a matrix asphalt material;
s2: adding matrix asphalt into a stirring tank and heating to 200 ℃;
s3: adding the modifier with high water permeability, SBR and rubber powder in sequence into a stirring tank, and stirring for 30min. Adding stabilizer, and stirring and mixing for 30min;
s4: placing the mixture obtained in the step S3 into a colloid mill for shearing and grinding for 120min, and placing the mixture into a finished product tank for development for 60min to obtain the high-water-permeability solid waste environment-friendly rubber asphalt material;
s5: and (3) placing the prepared modified rubber asphalt material and the stone with the particle size of 10-20mm after sieving into a mixing building for mixing for 15min, so as to obtain the rubber asphalt mixture which can be directly used for construction.
8. The method for preparing the high-water-permeability solid waste environment-friendly rubber asphalt material, which is characterized in that: the rubber powder is prepared from waste and old truck tires; and is prepared by the following method:
b1: putting the waste and old truck tires into a tire crusher, and crushing the truck tires to 30 mm;
b2: putting the crushed tire into a steel wire separator to separate rubber from steel wires, and processing the rubber into colloidal particles with the particle size of 15 mm;
b3: separating steel wires in the mixture by magnetic separation for 30min through a magnetic separator;
b4: crushing the mixture of the separated steel wires to 5mm, sorting by using a rolling screen, and re-crushing the mixture which does not accord with the particle size;
b5: placing the crushed mixture in a fiber separator to remove other impurities such as fibers;
b6: and (3) after the capillary steel wires are removed by secondary magnetic separation, putting the rubber with the impurities removed into a pulverizer to grind the particles into powder of 20 meshes.
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