CN106380105A - Asphalt concrete additive and preparation method thereof - Google Patents
Asphalt concrete additive and preparation method thereof Download PDFInfo
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- CN106380105A CN106380105A CN201610770662.6A CN201610770662A CN106380105A CN 106380105 A CN106380105 A CN 106380105A CN 201610770662 A CN201610770662 A CN 201610770662A CN 106380105 A CN106380105 A CN 106380105A
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- bituminous concrete
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- 238000002360 preparation method Methods 0.000 title claims description 16
- 239000011384 asphalt concrete Substances 0.000 title abstract description 15
- 239000000654 additive Substances 0.000 title abstract description 5
- 230000000996 additive effect Effects 0.000 title abstract description 5
- 239000003245 coal Substances 0.000 claims abstract description 39
- 239000000843 powder Substances 0.000 claims abstract description 31
- 239000010920 waste tyre Substances 0.000 claims abstract description 22
- 239000010426 asphalt Substances 0.000 claims abstract description 18
- 239000005060 rubber Substances 0.000 claims abstract description 17
- 239000002270 dispersing agent Substances 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000002699 waste material Substances 0.000 claims abstract description 6
- 239000004567 concrete Substances 0.000 claims description 48
- 239000003795 chemical substances by application Substances 0.000 claims description 38
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 238000006477 desulfuration reaction Methods 0.000 claims description 7
- 230000023556 desulfurization Effects 0.000 claims description 7
- 238000000197 pyrolysis Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 3
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Substances [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 3
- 229950000845 politef Drugs 0.000 claims description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 2
- 239000008116 calcium stearate Substances 0.000 claims description 2
- 235000013539 calcium stearate Nutrition 0.000 claims description 2
- 235000019359 magnesium stearate Nutrition 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical group [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 2
- 238000005292 vacuum distillation Methods 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 1
- 235000021355 Stearic acid Nutrition 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 229910052749 magnesium Inorganic materials 0.000 claims 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims 1
- 239000008117 stearic acid Substances 0.000 claims 1
- 239000012752 auxiliary agent Substances 0.000 abstract description 6
- 238000004821 distillation Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 24
- 230000000052 comparative effect Effects 0.000 description 16
- 238000003756 stirring Methods 0.000 description 5
- 235000013339 cereals Nutrition 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- -1 wherein Substances 0.000 description 3
- 235000005979 Citrus limon Nutrition 0.000 description 2
- 244000131522 Citrus pyriformis Species 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000009490 roller compaction Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B18/0481—Other specific industrial waste materials not provided for elsewhere in C04B18/00
-
- 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
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides an asphalt concrete additive. The raw materials comprise residues of coal direct liquefaction, asphalt, a dispersant, a solubilizer, and waste tire and rubber powder, wherein the waste tire and rubber powder is prepared by processing waste tires and waste rubber and has a particle size smaller than 30 meshes. The coal direct liquefaction residues are coal residues, which are discharged from a reduced pressure distillation apparatus in coal direct liquefaction, wherein the particle size of coal residues is smaller than 0.15 millimeter, and the asphalt content is greater than 75%. The weight ratio of coal direct liquefaction residues: asphalt: waste tire and rubber powder: dispersant: solubilizer is 1-1.5: 0.05-0.10: 0.25-0.45: 0.01-0.02: 0.02-0.05. The provided asphalt concrete additive is mainly composed of coal direct liquefaction residues, waste tire and rubber powder, asphalt, and a little amount of auxiliary agents, the doping amount of waste tire and rubber powder with a particle size smaller than 30 meshes is 0.25 to 0.45 times of that of coal direct liquefaction residues; the whole cost is low, and compared with common asphalt concrete, the high temperature resistant performance of asphalt concrete processed by the provided asphalt concrete additive is improved by 1 to 2 times.
Description
Technical field
The invention belongs to pavement material field, it is related to use in pavement construction material for the Coal Chemical Industry solid waste, tool
Body is related to a kind of bituminous concrete outer-penetrating agent and preparation method thereof.
Background technology
The endogenous cause of ill of induction asphalt pavement rut disease is mainly relevant with asphalt high-temperature stability deficiency, therefore to matrix pitch
Modification is a kind of effective way reducing asphalt pavement rut disease, has carried out numerous studies both at home and abroad.Using polymer to drip
Blue or green modification is common approach, but general modified technique is more complicated, needs Special Equipment, relatively costly, and engineering item can be significantly increased
Mesh cost.Therefore, limit its extensive application in road engineering.
Coal directly-liquefied residue, as producing the solid waste producing after liquid-fuel oil, contains Colophonium class in its composition
Material, for direct modified substrate Colophonium, when volume is less (about 7%), has certain improvement, patent to high-temperature behavior
Mention in CN101863637A by adding plasticiser, coupling agent and rubber powder in coal directly-liquefied residue, by melting, mix
The operations such as conjunction are obtained the outer-penetrating agent that can be used for road asphalt concrete.But the method needs to fill the plasticizer of 5-20%, and this is mixed
Amount has exceeded general auxiliary agent scope, and rubber powder volume is the 5-15% of coal directly-liquefied residue, and requires particle diameter to be less than 80 mesh
(0.178 millimeter), thus totally relatively costly, it is unfavorable for large-scale application in engineering.
Content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to, provide a kind of preparation process is simple, to raw material
Require low, it is possible to increase while the high temperature anti-rut behavior of bituminous concrete, do not affect the Colophonium coagulation of the cryogenic property of Colophonium
Native outer-penetrating agent and preparation method thereof.
In order to solve above-mentioned technical problem, the present invention adopts the following technical scheme that and is achieved：
A kind of bituminous concrete outer-penetrating agent, its preparing raw material includes coal directly-liquefied residue, Colophonium, dispersant and solubilising
Agent, also includes waste-tyre rubber-powder, and waste-tyre rubber-powder is to be processed into particle diameter through junked tire and waste old to be less than 30 mesh
The rubber powder of (0.55 millimeter).
The addition of coal directly-liquefied residue, Colophonium, waste-tyre rubber-powder, dispersant and solubilizing agent in mass ratio be 1～
1.5:0.05～0.10:0.25～0.45:0.001～0.002:0.002～0.005.
Coal directly-liquefied residue is that the particle diameter discharged from vacuum distillation apparatus after DCL/Direct coal liquefaction is less than 0.15 millimeter, Colophonium
Content is higher than 75% coal residue.
Colophonium is one or two compositionss in No. 110 and No. 90 bi tumenf orr oads.
Dispersant is one or more of Tissuemat E, Polyethylene Glycol and politef compositionss.
Solubilizing agent is one or more compositions in sodium stearate, magnesium stearate and calcium stearate.
Coal directly-liquefied residue is mixed by the preparation method of bituminous concrete outer-penetrating agent first with Colophonium, then with waste and old wheel
Tire rubber powder mixes, and then adds dispersant and solubilizing agent, warp in the mixture with waste-tyre rubber-powder for the coal directly-liquefied residue
Desulfurization pyrolysis after stirring, last extruder grain obtains bituminous concrete outer-penetrating agent.
Desulfurization pyrolysis is to melt to process 1-5 hour at a temperature of 180 DEG C～250 DEG C
The grain graininess of bituminous concrete outer-penetrating agent is 1mm～5mm.
The present invention compared with prior art, has the following technical effect that：
(I) bituminous concrete outer-penetrating agent of the present invention is mainly by coal directly-liquefied residue and waste-tyre rubber-powder, is aided with few
Amount auxiliary agent is made, and seldom, without departing from general auxiliary agent scope, and particle diameter is less than the waste-tyre rubber-powder of 30 mesh to the addition of auxiliary agent
Volume is 0.25～0.45 times of coal directly-liquefied residue, thus overall low cost, beneficial to large-scale application in engineering.
(II) bituminous concrete outer-penetrating agent of the present invention for the improvement of asphalt concrete elevated temperature property compared to plain asphalt
Concrete can improve 1～2 times, not only can effectively overcome the low temperature of coal directly-liquefied residue direct modified asphalt concrete material
The problem that performance significantly deteriorates, and the energy resource consumption of coal directly-liquefied residue modified asphalt concrete can be reduced.
Specific embodiment
In order to improve the high-temperature stability of bituminous concrete, polymer is usually used Colophonium is modified, then will prepare
Good modified pitch and mineral aggregate mix and stir acquisition bituminous concrete mixture of good performance.The modifying agent being usually used in asphalt modification has
SBS, SBR, EVA and PE etc., SBS modifier synthesis improvement is best, but expensive；And SBR, EVA and PE etc. are improving
Performance often results in other performance degradations simultaneously in a certain respect；Meanwhile, need Special Equipment when modified, investment is higher, and modified
During and modified, Colophonium continuous heating is likely to result in short ageing, affects its serviceability；Additionally, modified drip
Blue or green viscosity is larger, in order to obtain preferable construction workability it is necessary to improve heating-up temperature during use, not only brings aging hidden danger,
Mass energy also can be consumed.The technology starting point of the present invention is with coal directly-liquefied residue as primary raw material, obtains a kind of low one-tenth
Originally, easy working asphalt concrete modifying agent.In order to overcome the bituminous concrete that coal directly-liquefied residue modified pitch causes low
Warm performance degradation problems, present invention introduces the waste tyre rubber powder of low cost, are that in rubber powder, sulfide linkage is opened by pyrolytic process, simultaneously
Keeping carbon key and then retain the elastic characteristic of rubber powder, improving outer-penetrating agent low-temperature deformation ability, thus realizing improving Colophonium coagulation
Native cryogenic property purpose.Further it is proposed that a kind of bituminous concrete outer-penetrating agent during asphalt mixes and stirs plus
Enter, asphalt heating temperature need not be improved, energy resource consumption not only can be reduced, the aging hidden danger that high temperature brings can also be avoided.
Shoddy certain environment and at a temperature of C-S key, S -- S and C-C key can open, molecular weight reduces, and viscosity subtracts
Little, elastic deformability weakens.In the present invention during preparing outer-penetrating agent, using pyrolytic process, so that sulfide linkage is opened in advance and
Keep carbon-carbon double bond not open it is intended to can at utmost retention fund rubber powder elastic deformation feature by controllable process in advance simultaneously.
Meanwhile, in conjunction with extruder grain technique, enable coal directly-liquefied residue, Colophonium, shoddy, dispersant and solubilizing agent uniformly miscible not
Separate.
The specific embodiment of the present invention given below, implements in detail below it should be noted that the invention is not limited in
Example, all equivalents done on the basis of technical scheme each fall within protection scope of the present invention.
Dispersant used in the present invention is the thermoplastic resin cosmetics of low-molecular-weight, can be Tissuemat E, Polyethylene Glycol
With politef etc..
Embodiment 1：
The present embodiment provides a kind of bituminous concrete outer-penetrating agent, wherein, coal directly-liquefied residue, Colophonium, waste and old tyre rubber
The addition of powder, dispersant and solubilizing agent is 1 in mass ratio:0.05:0.25：0.001:0.002.
Wherein：Coal directly-liquefied residue particle diameter is less than 0.15 millimeter, and content of ashes is less than 25%, and bitumen content is not less than
75%.
Waste-tyre rubber-powder particle diameter is less than 0.55 millimeter, and wherein content of ashes is less than 9%, and content of carbon black is more than 29%, gold
Belong to content and be less than 0.04%.
Based on the composition of raw materials of the present embodiment, the present embodiment is added with the concrete preparation process of the bituminous concrete of outer-penetrating agent
As described below：
Step one, by coal directly-liquefied residue, 100 grams are heated to 180-200 DEG C, become molten；
Step 2, Colophonium is heated into molten；
Molten asphalt 5g, waste-tyre rubber-powder 25g, dispersant 0.1g and solubilizing agent 0.2g are added coal by step 3 successively
In direct liquefaction residue, then high-speed stirred 15min at 180-200 DEG C；
Step 4, the mixture stirring is poured in hermetically sealed can, moves into baking oven pyrolysis desulfurization at a temperature of 180 DEG C
Melt and process 1 hour；
Step 5, after pyrolysis desulfurization thawing is processed, mixture stirs, and obtaining granularity by extruder grain is 1-5 milli
The bituminous concrete outer-penetrating agent of rice.
In order to prove beneficial effects of the present invention, applicant is directed to and mixes according to 10% outside the sample of embodiment 1 preparation
Substitute Colophonium in AC-13 bituminous concrete (i.e. bituminous concrete mixture, the building stones of its maximum particle diameter are 1.32cm) to be joined
Ratio design, wherein, Colophonium uses 90# Colophonium, and indices are satisfied by code requirement, gather materials and adopt basalt, and breeze adopts stone
Lime stone breeze, asphalt mix design is that the conventional AC-13 type level of engineering is joined.According to《Highway engineering Colophonium and asphalt examination
Test code》(JTG E20-2011) carries out sample preparation and performance test, and performance test includes wheel tracking test, low temperature bend test
With residual stability test.
Bituminous concrete high temperature stability performance is characterized by wheel tracking test, and wheel tracking test is a kind of actual car of simulation
Wheel load is loaded in walking on road surface and forms the engineering experimental methods of rut, is to evaluate asphalt to resist under the conditions of set point of temperature
The method of plastic fluidity deformation.Wheel tracking test temperature is 60 DEG C, and wheel load is 0.7MPa, and test specimen adopts the 300mm of roller-compaction
× 300mm × 50mm rut test piece, result of the test is represented with dynamic stability (secondary/mm).
The cryogenic property of bituminous concrete is evaluated using standard conditions girder bending failure test.It is little that test adopts
Beam sample dimensions be long 250mm ± 2mm, wide 30mm ± 2mm, high 35mm ± 2mm, by roller-compaction 300mm × 300mm ×
The cutting of 50mm rut test piece forms.Test temperature is -10 DEG C ± 0.5 DEG C, and loading speed is 50mm/min, and result of the test is with girder
The corresponding maximal destruction in beam bottom strain during bending failure.
Asphalt opposing Moisture Damage ability generally adopts immersion Marshall test evaluation.Prepare mark according to standard method
Quasi- marshal piece, is divided into 2 groups, soaks 30min and 48h respectively in 60 DEG C of water-baths, then measures Marshall stability respectively, with
Divided by the Marshall Test result soaking 30min, this is to remain stablizes the Marshall stability result soaking 48h, and its value is got over
Greatly, asphalt opposing Water Damage ability is stronger.
Embodiment 2：
The present embodiment provides a kind of bituminous concrete outer-penetrating agent, wherein, coal directly-liquefied residue, Colophonium, waste and old tyre rubber
The addition of powder, dispersant and solubilizing agent is 1.5 in mass ratio:0.1:0.45:0.002:0.005.
In the present embodiment the requirement to raw material and added with outer-penetrating agent bituminous concrete preparation method all with embodiment 1 phase
With except for the difference that desulfurization pyrolysis is to melt to process 5 hours at a temperature of 250 DEG C.
The method of testing of the bituminous concrete test specimen of the present embodiment is same as Example 1, and test result is as shown in table 1.
Comparative example 1：
This comparative example provides a kind of bituminous concrete, and its preparing raw material is by weight percentage：Colophonium：Mineral aggregate=4.8:
100.
The method of testing of the preparation method of the bituminous concrete of this comparative example and test specimen is same as Example 1, test result
As shown in table 1.
Comparative example 2
The system of the requirement to raw material and each component ratio of bituminous concrete outer-penetrating agent and bituminous concrete in this comparative example
Preparation Method is all same as Example 1, except that, wherein waste-tyre rubber-powder particle diameter is 80 mesh.
The method of testing of this comparative example bituminous concrete test specimen is same as Example 1, and test result is as shown in table 1.
Comparative example 3：
This comparative example provides a kind of bituminous concrete outer-penetrating agent, wherein, coal directly-liquefied residue, waste-tyre rubber-powder, lemon
The addition of lemon acid tri-n-butyl and hyper-dispersant is 1 in mass ratio:0.15:0.20:0.003.
The method of testing of this comparative example bituminous concrete test specimen is same as Example 1, and test result is as shown in table 1.
Effect analyses：
Table 1 outer-penetrating agent uses performance impact effect to asphaltic concrete road
| Pavement performance | Embodiment 1 | Embodiment 2 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Dynamic stability (secondary/mm) | 3568 | 4064 | 1980 | 2845 | 2345 |
| Residual stability (%) | 92 | 93 | 91 | 90 | 92 |
| Maximum flexural-tensile strain (μ ε) | 3144 | 3361 | 2675 | 3259 | 2685 |
Table 1 shows, compared with asphalt concrete, the bituminous concrete outer-penetrating agent using present invention preparation can be notable
Improve high-temperature behavior and the cryogenic property of bituminous concrete mixture, maximum curved under the dynamic stability of sign high-temperature behavior and low temperature
Apparently higher than comparative example, meanwhile, water stabilizing also improves for stretching strain；Embodiment 1 asphalt concrete elevated temperature property and
Water stability is all better than comparative example 2, and cryogenic property is lower slightly, illustrates that the particle diameter of waste-tyre rubber-powder has to bituminous concrete performance
Impact, comparative example 3 high-temperature behavior and cryogenic property improvement are limited, and the asphalt concrete elevated temperature property of embodiment and water stability are equal
It is better than comparative example 3, auxiliary agent during outer-penetrating agent is prepared in explanation and additive dosage has an impact to bituminous concrete performance.Therefore, originally
Invention bituminous concrete outer-penetrating agent can not only be obviously improved the high-temperature behavior of bituminous concrete moreover it is possible to improve its cryogenic property.
Claims (8)
1. a kind of bituminous concrete outer-penetrating agent, its preparing raw material includes coal directly-liquefied residue, Colophonium, dispersant and solubilizing agent,
It is characterized in that, also include waste-tyre rubber-powder, described waste-tyre rubber-powder is to process granulating through junked tire and waste old
Footpath is less than the rubber powder of 30 mesh；
The addition of described coal directly-liquefied residue, Colophonium, waste-tyre rubber-powder, dispersant and solubilizing agent in mass ratio be 1～
1.5:0.05～0.1:0.25～0.45:0.001～0.002:0.002～0.005.
2. bituminous concrete outer-penetrating agent as claimed in claim 1 is it is characterised in that the described coal directly-liquefied residue direct liquid that is coal
The particle diameter discharged from vacuum distillation apparatus after change is less than 0.15 millimeter, and asphalt quality is higher than 75% coal residue.
3. bituminous concrete outer-penetrating agent as claimed in claim 1 it is characterised in that described Colophonium be bi tumenf orr oad, Colophonium
It is numbered one or two mixture in No. 110 and No. 90.
4. bituminous concrete outer-penetrating agent as claimed in claim 1 is it is characterised in that described dispersant is Tissuemat E, poly- second two
One or more of alcohol and politef compositionss.
5. bituminous concrete outer-penetrating agent as claimed in claim 1 is it is characterised in that described solubilizing agent is sodium stearate, stearic acid
One or more compositions in magnesium and calcium stearate.
6. the preparation method of bituminous concrete outer-penetrating agent described in claim 1 is it is characterised in that comprising the following steps, straight by coal
Connect liquefied residue heating melting, add Colophonium, waste-tyre rubber-powder, dispersant and solubilising successively in coal directly-liquefied residue
Agent, agitated rear desulfurization pyrolysis, extruder grain obtains bituminous concrete outer-penetrating agent.
7. bituminous concrete outer-penetrating agent as claimed in claim 6 preparation method it is characterised in that described desulfurization pyrolysis be
Melt at a temperature of 180 DEG C～250 DEG C and process 1-5 hour.
8. the preparation method of bituminous concrete outer-penetrating agent as claimed in claim 6 is it is characterised in that mix outside described bituminous concrete
The grain graininess of agent is 1mm～5mm.
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