CN105440713A - Asphalt mixing material performance enhancing agent and preparation method thereof - Google Patents
Asphalt mixing material performance enhancing agent and preparation method thereof Download PDFInfo
- Publication number
- CN105440713A CN105440713A CN201610052002.4A CN201610052002A CN105440713A CN 105440713 A CN105440713 A CN 105440713A CN 201610052002 A CN201610052002 A CN 201610052002A CN 105440713 A CN105440713 A CN 105440713A
- Authority
- CN
- China
- Prior art keywords
- asphalt
- performance
- toughener
- rock
- asphalt mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 184
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 title abstract description 19
- 238000002156 mixing Methods 0.000 title abstract description 9
- 230000002708 enhancing effect Effects 0.000 title abstract 5
- 239000011435 rock Substances 0.000 claims abstract description 76
- 239000000654 additive Substances 0.000 claims abstract description 18
- 230000000996 additive effect Effects 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims description 82
- 239000012745 toughening agent Substances 0.000 claims description 69
- 239000002245 particle Substances 0.000 claims description 34
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 238000005336 cracking Methods 0.000 abstract description 2
- 239000011295 pitch Substances 0.000 description 39
- 238000012360 testing method Methods 0.000 description 30
- 239000011159 matrix material Substances 0.000 description 21
- 150000001875 compounds Chemical class 0.000 description 14
- 229920000092 linear low density polyethylene Polymers 0.000 description 13
- 239000004707 linear low-density polyethylene Substances 0.000 description 13
- 238000010998 test method Methods 0.000 description 9
- 239000003623 enhancer Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000006378 damage Effects 0.000 description 6
- 238000011068 loading method Methods 0.000 description 6
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 5
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 230000002929 anti-fatigue Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000011301 petroleum pitch Substances 0.000 description 3
- 229920001084 poly(chloroprene) Polymers 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- HBGPNLPABVUVKZ-POTXQNELSA-N (1r,3as,4s,5ar,5br,7r,7ar,11ar,11br,13as,13br)-4,7-dihydroxy-3a,5a,5b,8,8,11a-hexamethyl-1-prop-1-en-2-yl-2,3,4,5,6,7,7a,10,11,11b,12,13,13a,13b-tetradecahydro-1h-cyclopenta[a]chrysen-9-one Chemical compound C([C@@]12C)CC(=O)C(C)(C)[C@@H]1[C@H](O)C[C@]([C@]1(C)C[C@@H]3O)(C)[C@@H]2CC[C@H]1[C@@H]1[C@]3(C)CC[C@H]1C(=C)C HBGPNLPABVUVKZ-POTXQNELSA-N 0.000 description 1
- PFRGGOIBYLYVKM-UHFFFAOYSA-N 15alpha-hydroxylup-20(29)-en-3-one Natural products CC(=C)C1CCC2(C)CC(O)C3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 PFRGGOIBYLYVKM-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- SOKRNBGSNZXYIO-UHFFFAOYSA-N Resinone Natural products CC(=C)C1CCC2(C)C(O)CC3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 SOKRNBGSNZXYIO-UHFFFAOYSA-N 0.000 description 1
- -1 SBS compound Chemical class 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000013486 operation strategy Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, 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
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
- C08K5/1535—Five-membered rings
- C08K5/1539—Cyclic anhydrides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to an asphalt mixing material performance enhancing agent and a preparation method thereof, and belongs to the technical field of road materials. The asphalt mixing material performance enhancing agent is composed of rock asphalt and an extra additive. The mass ratio of the rock asphalt to the extra additive is larger than 9:1. The invention further provides the preparation method of the asphalt mixing material performance enhancing agent. The asphalt mixing material performance enhancing agent can be easily molten and distributed into an asphalt mixing material, the efficacy of improving performance of the asphalt mixing material can be brought into full play, the high-temperature stable performance is kept, and meanwhile the better water stability and low-temperature anti-cracking performance are achieved.
Description
Technical field
The present invention relates to a kind of pitch blended stock performance enhancers and preparation method thereof, be specifically related to pitch blended stock performance enhancers that rock asphalt and additive be mixed with and preparation method thereof, belong to pavement material technical field.
Background technology
The mineral deposit of rock asphalt, due to earth movement, fracture, the crude oil contained in crust depth is made constantly to pour into earth's surface, under field conditions (factors) through the time of millions upon millions of years, the bitumen of oxypolymerization under the comprehensive action of temperature, pressure, sunshine, gas, inorganics catalyst, microorganism and moisture.
Because long-term existence subjected to the test of extreme natural environment in nature, the character of rock asphalt is extremely stable, ageing-resistant performance is given prominence to.Rock asphalt is rock asphalt, does not usually directly use, but as material modified with matrix pitch, gathering materials mixes, mixes and join, and improves the pavement performance of matrix pitch.Rock asphalt is the same with matrix pitch is all the derivative of oil, has extraordinary compatibleness between itself and matrix pitch, and there is not segregation phenomenon during matrix pitch mixing.As the performance enhancers of matrix pitch, the compatibility of itself and matrix pitch is far superior to the compatibility of polymer performance toughener and matrix pitch.In addition, in rock asphalt, the main component of breeze is limestone, and particle is superfine and have the ability of goodish absorption pitch, has and strengthens pitch and the adhering effect of gathering materials.Therefore, be used alone rock asphalt or rock asphalt compound carries out modification to petroleum pitch, by itself and petroleum pitch making on road surface, the high-temperature behavior on road surface, anti-water damage property and anti-fatigue performance can be improved on the one hand to a certain extent, but modified effect is very limited, low-temperature performance allows of no optimist on the other hand, and the add-on of rock asphalt is more to be destroyed larger to low-temperature performance.So at present, have the additive that rock asphalt mass percentage content is lower, only can improve the high-temperature stability of asphalt, and cannot effectively improve the problems such as compound water stability is low, crack resistance at low-temperature is poor.Therefore, need exploitation one badly and can realize high-temperature stability, the rock asphalt toughener of crack resistance at low-temperature can be realized again.
Summary of the invention
The object of the invention is the problem that water stability is low, crack resistance at low-temperature is poor existed for existing pitch blended stock performance enhancers, propose a kind of by fine and closely woven uniform rock asphalt particle (asphalt content >=15%, grain diameter≤5mm) and the performance of asphalt mixture toughener that mixes of additive, this mixture performance toughener easily melts and is distributed in pitch blended stock, the improved performance usefulness to pitch blended stock can be given full play to, while maintenance high temperature stability performance, also there is better water stability and low-temperature cracking-resistance.
For achieving the above object, the present invention is by the following technical solutions:
A kind of performance of asphalt mixture toughener, be made up of rock asphalt and additive, the mass ratio of rock asphalt and additive is greater than 9:1.
Described additive mainly comprise plastics, fiber, rubber, resin one or more.Wherein, fiber can be natural fiber, also can be chemical synthetic fiber, preferred lignocellulose or ground carbon fiber; Rubber can be natural rubber or synthetic rubber, preferred styrene-butadiene rubber(SBR) or chloroprene rubber; The preferred Low Density Polyethylene of resin, linear low density polyethylene or polyvinyl butyral acetal.
Can also comprise grafting agent in described additive, grafting agent selects maleic anhydride or fumaric acid anhydride, and the mass percentage of grafting agent accounts for 1% of toughener total mass.
In described rock asphalt, asphalt quality percentage composition is more than or equal to 15%, and softening temperature is greater than 45 DEG C.
Present invention also offers a kind of preparation method of described performance of asphalt mixture toughener:
First rock asphalt is broken into particle, grain diameter≤5mm; Then dry 2% to wherein biodiversity≤rock asphalt total mass, then be greater than 9:1 in mass ratio with additive particle (particle diameter≤5mm) and mix and mix thoroughly, namely obtain performance of asphalt mixture toughener.
The present invention is directed to the problem of prior art, rock asphalt mass percentage content in toughener is creatively increased to more than 90%, adding again by other components of reasonable ratio, efficiently solve the problems such as compound water stability is low, crack resistance at low-temperature is poor, and high-temperature stability can be made to be improved greatly.
Detected result shows, uses the asphalt of toughener provided by the invention compared with the pitch not containing this toughener or asphalt, has better high-temperature stability, water stability, crack resistance at low-temperature; And the present invention can realize better high-temperature stability, water stability, crack resistance at low-temperature when additive consumption is less, has not only saved cost, also reduces the environmental pollution brought by additive.Be suitable for using in the motorway of and winter severe cold area rainy at summer hot humid, urban road and other asphalt highway.
The advantage of this performance of asphalt mixture toughener is:
(1) high temperature resistant, rutting resistance is strong, be adapted to hot area and cold district: test shows, mix and join this performance of asphalt mixture toughener and the asphalt obtained has very excellent high-temperature behavior, the rutting resistance on road surface can be significantly improved, be specially dynamic stability and can reach 6000 times/more than mm, much larger than the 2800 times/mm that national regulation requires, and not containing 2300 times/mm of the asphalt of toughener.
(2) water resistant damage capability is strong, be adapted to area of heavy rainfull: this performance of asphalt mixture toughener nitrogen content is high, several times to tens times are not exceeded not etc. compared with plain asphalt, and nitrogen element exists with functional group's form, the adhesivity of particularly gathering materials and stripper-resistance be improved significantly, water resistant damage capability is more stable and durable.Compare organic amine material and improve pitch and the adhesivity of gathering materials, organic amine antistrip performance under the long-time condition of high temperature can reduce rapidly.With the addition of the asphalt of this toughener, its immersion Marshall residual stability can reach more than 96%, and freeze-thaw split strength ratio can reach 88%, and national regulation requires that immersion Marshall residual stability is 85%, and freeze-thaw split strength ratio is 80%.
(3) crack resistance at low-temperature is strong, can be used for cold district :-10 DEG C of girder flexural failure strains of the asphalt being doped with toughener can be made to be increased to 3026.37 μ ε,-10 DEG C of girder flexural failures much larger than matrix pitch compound strain 2305.39 μ ε, and-10 DEG C of girder flexural failure strains meeting the winter severe cold district required in national regulation are not less than 3000 μ ε.
(4) resistance of aging is strong, there is good weathering resistance: due to the rock asphalt in this performance of asphalt mixture toughener physical environment, in be present in millions upon millions of year, in its original composition, easily composition that is aging, that be easily corroded disappears already, and the character of existing composition is stable especially.This performance of asphalt mixture toughener can form the protective layer of densification, light, enrichment at free surface, protect matrix pitch and be not etched.The high nitrogen content of this performance of asphalt mixture toughener makes modified pitch blended stock viscosity significantly improve, and oxidation-resistance strengthens.These effects improve the weathering resistance of bituminous pavement, slow down ageing of asphalt speed, thus extend Road Service Life.
(5) without the need to heating transport, can stack at the construction field (site), compound environmental protection convenient for production: this performance of asphalt mixture toughener is immobilising dusty material, can not lump during storage, is easy to store up, and can shift to an earlier date and get the raw materials ready at the construction field (site).And this performance of asphalt mixture toughener and matrix pitch have extraordinary compatibleness, there is not segregation phenomenon, and compound production technique simple (employing dry process), mixture quality is stablized.
(6) mixing of this performance of asphalt mixture toughener and matrix pitch is excellent, anti-aging excellent with anti-fatigue performance; Adopt ripe dry process to produce this performance of asphalt mixture toughener and do not need long-time heat, mixture performance is stablized, its anti-aging asphalt being far superior to the employing wet production such as SBS compound and TLA with anti-fatigue performance.
(7) reproducible utilization, save energy, meets the development trend of environmental protection:
This performance of asphalt mixture toughener can save the use of matrix pitch, reduces the dependence to petroleum pitch.And without the need to specific equipment in the production process of this performance of asphalt mixture toughener, matrix pitch does not need long-time heating, minimizing CO capable of reducing energy consumption
2, NO
x, SO
2etc. quantity discharged.
In sum, comprehensive benefit of the present invention is mainly manifested in: the temperature sensitivity 1) improving asphalt, increases stability in high temperature environments and non-deformability, increases toughness at low ambient temperatures and resistance to cleavage; 2) weather resistance is strengthened to asphalt, increase antifatigue cracking strength and reduce be full of cracks, reducing maintaining cost, increase the service life; 3) anti-skidding power is strengthened to asphalt, road improvement traffic safety; 4) water resistance is strengthened to asphalt, improve anti-water damage ability; 5) to the normal use ability that asphalt strengthens under severe environment and heavy traffic condition; 6) asphalt is reduced to the consumption of matrix pitch, and have adaptability widely to matrix pitch, effectively can improve the use properties of pitch simultaneously; 7) to asphalt can with other various performance enhancers and additive used in combination, adapt to the matrix pitch of any hardness and viscosity, different mixture proportion need only be regulated, modification object can be reached; 8) comprehensive cost using this performance of asphalt mixture toughener to increase to asphalt is lower than the like product of polymer modified asphalt compound, other modifying asphalts (as SBS, TLA etc.) compound and external import.
Operation strategies: 1) high-grade highway or the large urban road of vehicle flowrate; 2) city road crossing and the vehicle such as stop-light, stop line jogging region and slope, bridge floor; 3) Bus lane, taxiway, field, vehicle station and container stacking goods yard; 4) airstrip and airport hardstand; 5) cement pavement overlays anti-skidding wearing course of asphalt etc.
Embodiment
Embodiment 1
Performance of asphalt mixture toughener 1: be made up of 91wt% rock asphalt, 8wt% linear low density polyethylene and 1wt% fumaric acid anhydride.Wherein, in rock asphalt, asphalt quality accounts for 15% of rock asphalt total mass, and softening temperature is 85 DEG C.
Concrete preparation process is as follows: rock asphalt asphalt quality being accounted for rock asphalt total mass 15% is broken into particle, and grain diameter is 3.53mm; Then dry to biodiversity and account for 1.28% of total mass, be linear low density polyethylene and the fumaric acid anhydride particle of 4mm again with particle diameter be rock asphalt according to mass ratio: linear low density polyethylene: fumaric acid anhydride=91:8:1 mixes and mixes thoroughly, namely obtains performance of asphalt mixture toughener.
Embodiment 2
Simultaneous test:
Performance of asphalt mixture toughener 0: be made up of 80wt% rock asphalt, 20wt% linear low density polyethylene.Wherein, in rock asphalt, asphalt quality accounts for 25% of rock asphalt total mass, and softening temperature is 85 DEG C.
Performance of asphalt mixture toughener 2:
Be made up of 91wt% rock asphalt, 8wt% linear low density polyethylene and the non-linear Low Density Polyethylene of 1wt%.Wherein, in rock asphalt, asphalt quality accounts for 25% of rock asphalt total mass, and softening temperature is 75 DEG C.
Concrete preparation process is as follows: rock asphalt asphalt quality being accounted for rock asphalt total mass 25% is broken into particle, grain diameter is 2.82mm, then dry to biodiversity and account for 1.25% of total mass, be that the linear low density polyethylene of 5mm and non-linear Low Density Polyethylene particle mix by the mass ratio of 91:8:1 and mix thoroughly again with particle diameter, namely obtain performance of asphalt mixture toughener 2.
Adopt dry process to carry out shop experiment, the target grating of preheating is gathered materials add test amalgamator in, mix the performance of asphalt mixture toughener in the implementation case, then add matrix pitch mix, prepare test specimen.Test temperature is 60 degrees Celsius.High temperature and low temperature dynamic stability test correlation parameter respectively as shown in Table 1 and Table 2:
The high temperature dynamic stability test-results (test temperature: 60 DEG C) of table 1 performance of asphalt mixture toughener 2
Crack resistance at low-temperature is tested:
Concrete detection method is as follows:
According to the regulation of " highway engineering pitch and Asphalt Mixture Experiment code " (JTJ052-2000) Asphalt Mixture bend test method, bitumen aggregate ratio by 4.70% prepares the prism girder test specimen of 250mm × 30mm × 35mm, measure its-10 DEG C, loading rate be destruction under 50mm/min condition time strain, the test result of toughener 2 of the present invention is as shown in table 2, and the test result of the toughener 0 in simultaneous test is as shown in table 3:
Table 2 adds the compound low-temperature bending strain-gauge test result (test temperature :-10 DEG C) of toughener 2
Remarks:
(1) sample dimensions: (30 × 35 × 250) mm;
(2) test method: T0715-1993;
(3) test temperature :-10 DEG C; Loading rate: 50mm/min.
Table 3 adds the compound low-temperature bending strain-gauge test result (test temperature :-10 DEG C) of toughener 0
Remarks:
(1) sample dimensions: (30 × 35 × 250) mm;
(2) test method: T0715-1993;
(3) test temperature :-10 DEG C; Loading rate: 50mm/min.
Contrast from table 2 and table 3: the compound of admixture pitch blended stock toughener 2 also has excellent crack resistance at low-temperature, strain the breaking strain 2302.39 μ ε of 3027.07 μ ε much larger than matrix pitch blended stock-10 DEG C of girder flexural failures, be also greater than the breaking strain 2751.86 μ ε of the pitch blended stock toughener 0 in simultaneous test.Meet the requirement that severe cold area in technical specifications is not less than 2800 μ ε.
Embodiment 3
Performance of asphalt mixture toughener 3: be made up of 91wt% rock asphalt, 8wt% ground carbon fiber and 1wt% maleic anhydride.Wherein, in rock asphalt, asphalt quality accounts for 30% of rock asphalt total mass, and softening temperature is 75 DEG C.
Concrete preparation process is as follows: rock asphalt asphalt quality being accounted for rock asphalt total mass 30% is broken into particle, grain diameter is 0.93mm, then dry to biodiversity and account for 1.74% of total mass, be that the carbon fiber of 2mm and maleic anhydride particle mix by the mass ratio of 91:8:1 and mix thoroughly again with particle diameter, namely obtain performance of asphalt mixture toughener.
Embodiment 4
Performance of asphalt mixture toughener 4: be made up of 91wt% rock asphalt and 9% linear low density polyethylene.Wherein, in rock asphalt, asphalt quality accounts for 35% of rock asphalt total mass, and softening temperature is 80 DEG C.
Concrete preparation process is as follows: rock asphalt asphalt quality being accounted for rock asphalt total mass 35% is broken into particle, grain diameter is 4.93mm, then dry to biodiversity and account for 0.95% of total mass, be that the linear low density polyethylene particle of 2.8mm mixes by the mass ratio of 91:9 and mixes thoroughly again with particle diameter, namely obtain performance of asphalt mixture toughener.
Embodiment 5
Performance of asphalt mixture toughener 5: be made up of 91wt% rock asphalt and 9wt% chloroprene rubber.Wherein, in rock asphalt, asphalt quality accounts for 18% of rock asphalt total mass, and softening temperature is 85 DEG C.
Concrete preparation process is as follows: rock asphalt asphalt quality being accounted for rock asphalt total mass 18% is broken into particle, grain diameter is 1.78mm, then dry to biodiversity and account for 1.16% of total mass, be that the chloroprene rubber particle of 1.03mm mixes by the mass ratio of 91:9 and mixes thoroughly again with particle diameter, namely obtain performance of asphalt mixture toughener.
Embodiment 6
Performance of asphalt mixture toughener 6: be made up of 93wt% rock asphalt, 5wt% Low Density Polyethylene and 2wt% styrene-butadiene rubber(SBR).Wherein, in rock asphalt, asphalt quality accounts for 40% of rock asphalt total mass, and softening temperature is 75 DEG C.
Concrete preparation process is as follows: rock asphalt asphalt quality being accounted for rock asphalt total mass 40% is broken into particle, grain diameter is 0.95mm, then dry to biodiversity and account for 1.44% of total mass, be that the Low Density Polyethylene of 0.58mm and styrene-butadiene rubber(SBR) particle mix by the mass ratio of 93:5:2 and mix thoroughly again with particle diameter, namely obtain performance of asphalt mixture toughener.
Dry process is adopted to carry out shop experiment, the target grating of preheating is gathered materials add test amalgamator in, mix the performance of asphalt mixture toughener in the implementation case, volume is 3% of mixture quality, mix 15 to 30 seconds, then add matrix pitch mix, prepare test specimen.With the index such as dynamic stability, immersion Marshall residual stability, freeze-thaw split intensity ,-10 DEG C of girder flexural failure strains of the asphalt that with the addition of toughener, detection dynamic stability is carried out to the test specimen not adding toughener and adopts national sector standard T0719-2000 test method, test temperature 60 DEG C, tire pressure 0.7Mpa; Immersion Marshall residual stability adopts national sector standard T0709-2000 test method, freeze-thaw split intensity adopts national sector standard T0729-2000 test method,-10 DEG C of girder flexural failure strains adopt national sector standard T0715-1993 test method, test temperature-10 DEG C, loading rate 50mm/min.Obtain result shown in table 4:
Table 4 performance of asphalt mixture toughener 6 performance test results
Embodiment 7
Performance of asphalt mixture toughener 7: be made up of 91wt% rock asphalt, 5wt% linear low density polyethylene and 4wt% lignocellulose.Wherein, in rock asphalt, asphalt quality accounts for 22% of rock asphalt total mass, and softening temperature is 55 DEG C.
Concrete preparation process is as follows: rock asphalt asphalt quality being accounted for rock asphalt total mass 22% is broken into particle, grain diameter is 1.03mm, then dry to biodiversity and account for 1.64% of total mass, be that the linear low density polyethylene of 5mm and lignocellulosic particles mix by the mass ratio of 91:5:4 and mix thoroughly again with particle diameter, namely obtain performance of asphalt mixture toughener.
Embodiment 8
Performance of asphalt mixture toughener 8: be made up of 95wt% rock asphalt and 5wt% polyvinyl butyral acetal.Wherein, in rock asphalt, asphalt quality accounts for 25% of rock asphalt total mass, and softening temperature is 80 DEG C.
Concrete preparation process is as follows: rock asphalt asphalt quality being accounted for rock asphalt total mass 25% is broken into particle, grain diameter is 1.18mm, then dry to biodiversity and account for 1.03% of total mass, be that the polyvinyl butyral acetal particle of 2.4mm mixes by the mass ratio of 95:5 and mixes thoroughly again with particle diameter, namely obtain performance of asphalt mixture toughener.
Adopt dry process carry out shop experiment, the target grating of preheating is gathered materials add test amalgamator in, mix the performance of asphalt mixture toughener in the implementation case, volume is 1.5% of mixture quality.Carry out 60 DEG C of wheel tracking tests to test specimen, soak the Marshall stability test after 60 DEG C of water 30min and 48h, freeze-thaw split test for tensile strength, result is as shown in table 5:
Table 5 performance of asphalt mixture toughener 8 performance test results
Embodiment 9
Performance of asphalt mixture toughener 9: be made up of 98wt% rock asphalt and 2wt% polyvinyl butyral acetal.Wherein, in rock asphalt, asphalt quality accounts for 25% of rock asphalt total mass, and softening temperature is 75 DEG C.
Concrete preparation process is as follows: rock asphalt asphalt quality being accounted for rock asphalt total mass 25% is broken into particle, grain diameter is 0.88mm, then dry to biodiversity and account for 2% of total mass, be that the additive polyvinyl butyral acetal particle of 3mm mixes by the mass ratio of 98:2 and mixes thoroughly again with particle diameter, namely obtain performance of asphalt mixture toughener.
Embodiment 10
The compound of admixture pitch blended stock performance enhancers provided by the invention has excellent crack resistance at low-temperature.Add the compound of pitch blended stock performance enhancers provided by the invention, strain-10 DEG C of girder flexural failures the breaking strain 2321.90 μ ε that 2931.63 μ ε are greater than matrix pitch blended stock, meet the requirement that severe cold area in technical specifications is not less than 2800 μ ε.
In order to check the crack resistance at low-temperature of the performance of asphalt mixture toughener in embodiment 4, according to the regulation of " highway engineering pitch and Asphalt Mixture Experiment code " (JTJ052-2000) Asphalt Mixture bend test method, bitumen aggregate ratio by 3.80% prepares the prism girder test specimen of 250mm × 30mm × 35mm, measure it at-10 DEG C, bending tensile strength when loading rate is the destruction under 50mm/min condition, result is as shown in table 6:
Table 6 compound low-temperature bending strain-gauge test result
Remarks:
(1) sample dimensions: (30 × 35 × 250) mm;
(2) test method: T0715-1993;
(3) test temperature :-10 DEG C; Loading rate: 50mm/min.
Claims (6)
1. a performance of asphalt mixture toughener, is characterized in that: be made up of rock asphalt and additive, and the mass ratio of rock asphalt and additive is greater than 9:1.
2. a kind of performance of asphalt mixture toughener as claimed in claim 1, is characterized in that: also comprise grafting agent in described additive.
3. a kind of performance of asphalt mixture toughener as claimed in claim 2, is characterized in that: the preferred maleic anhydride of described grafting agent or fumaric acid anhydride.
4. a kind of performance of asphalt mixture toughener as claimed in claim 2, is characterized in that: the mass percentage of described grafting agent accounts for 1% of toughener total mass.
5. a kind of performance of asphalt mixture toughener as described in any one of claim 1-4, it is characterized in that: the asphalt content in described rock asphalt is more than or equal to 15%, softening temperature is greater than 45 DEG C.
6. a preparation method for performance of asphalt mixture toughener, is characterized in that: first rock asphalt is broken into particle, grain diameter≤5mm, then dries 2% of extremely wherein biodiversity≤rock asphalt total mass; Be greater than 9:1 more in mass ratio to mix mix thoroughly with additive particle, namely obtain performance of asphalt mixture toughener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052002.4A CN105440713B (en) | 2016-01-26 | 2016-01-26 | A kind of pitch blended stock performance enhancers and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052002.4A CN105440713B (en) | 2016-01-26 | 2016-01-26 | A kind of pitch blended stock performance enhancers and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105440713A true CN105440713A (en) | 2016-03-30 |
| CN105440713B CN105440713B (en) | 2018-11-13 |
Family
ID=55551378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610052002.4A Expired - Fee Related CN105440713B (en) | 2016-01-26 | 2016-01-26 | A kind of pitch blended stock performance enhancers and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105440713B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398243A (en) * | 2016-08-29 | 2017-02-15 | 山东高速路用新材料技术有限公司 | Asphalt mixture reinforcing agent and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104742A (en) * | 2007-08-23 | 2008-01-16 | 交通部公路科学研究院 | Rock asphalt composite modifier and its preparation method and use |
| CN101831190A (en) * | 2010-05-20 | 2010-09-15 | 李滢 | High-viscosity asphalt modifier soluble in asphalt and production method thereof |
| CN103613940A (en) * | 2013-11-15 | 2014-03-05 | 同济大学 | Rock asphalt composite modifier as well as preparation method and application thereof |
| CN105153719A (en) * | 2015-10-23 | 2015-12-16 | 王新航 | Rare-earth modified asphalt and preparation method thereof |
| CN105176107A (en) * | 2015-08-13 | 2015-12-23 | 山西省交通科学研究院 | Modified asphalt particles and preparation method thereof |
| CN105199406A (en) * | 2015-10-10 | 2015-12-30 | 上海森锐道路工程技术有限公司 | Rock-asphalt-modified asphalt mixture and preparation method thereof |
-
2016
- 2016-01-26 CN CN201610052002.4A patent/CN105440713B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104742A (en) * | 2007-08-23 | 2008-01-16 | 交通部公路科学研究院 | Rock asphalt composite modifier and its preparation method and use |
| CN101831190A (en) * | 2010-05-20 | 2010-09-15 | 李滢 | High-viscosity asphalt modifier soluble in asphalt and production method thereof |
| CN103613940A (en) * | 2013-11-15 | 2014-03-05 | 同济大学 | Rock asphalt composite modifier as well as preparation method and application thereof |
| CN105176107A (en) * | 2015-08-13 | 2015-12-23 | 山西省交通科学研究院 | Modified asphalt particles and preparation method thereof |
| CN105199406A (en) * | 2015-10-10 | 2015-12-30 | 上海森锐道路工程技术有限公司 | Rock-asphalt-modified asphalt mixture and preparation method thereof |
| CN105153719A (en) * | 2015-10-23 | 2015-12-16 | 王新航 | Rare-earth modified asphalt and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈惠敏: "《石油沥青产品手册》", 31 July 2001, 北京：石油工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398243A (en) * | 2016-08-29 | 2017-02-15 | 山东高速路用新材料技术有限公司 | Asphalt mixture reinforcing agent and preparation method thereof |
| CN106398243B (en) * | 2016-08-29 | 2019-03-15 | 山东高速路用新材料技术有限公司 | A kind of asphalt reinforcing agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105440713B (en) | 2018-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101654347B (en) | Hot in-plant reclaimed asphalt mixture | |
| CN101948272B (en) | Rubber bituminous mixture partially using slag as coarse aggregate | |
| US11072708B2 (en) | Asphalt concrete composition having improved waterproof performance by comprising SIS, recycled asphalt aggregate, and fine powder aggregate with improved particle size, and construction method using the same | |
| Wang et al. | Advanced cold patching materials (CPMs) for asphalt pavement pothole rehabilitation: State of the art | |
| CN103964747B (en) | A kind of weather-proof quick-drying road surface breakage patching material and preparation method thereof | |
| CN102617070A (en) | Polyurethane asphalt concrete as well as preparation method and application thereof | |
| CN105504843A (en) | Road asphalt pavement | |
| Chen et al. | Properties and economics evaluation of utilization of oil shale waste as an alternative environmentally-friendly building materials in pavement engineering | |
| CN108298871B (en) | Asphalt mixture and preparation method thereof | |
| CN101289578B (en) | Modified bitumen and bituminous mixture | |
| CN104072024A (en) | Preparation process of asphalt mixture | |
| Zhao et al. | A summary of cold patch material for asphalt pavements | |
| CN103588424A (en) | Durable high-modulus asphalt mixture based on hard asphalt particles | |
| Wang et al. | Experimental study on the aging behavior of modified asphalt with different types of fine solid wastes under different aging conditions | |
| Al-Gurah et al. | Investigation the effect of different types of mineral fillers on mechanical properties of Hot Mix Asphalt | |
| CN111732370A (en) | High-performance cold-patch material based on old asphalt pavement milling material and preparation method thereof | |
| CN105440713A (en) | Asphalt mixing material performance enhancing agent and preparation method thereof | |
| CN101629000B (en) | Asphalt modified product and preparation method thereof | |
| CN106634758A (en) | Anti-aging epoxy adhesive and application thereof | |
| Bieliatynskyi et al. | Investigation of the properties of cast asphalt concrete mixture with the addition of fiber from the fly ash of thermal power plants | |
| KR100432048B1 (en) | Modified Ascon Mixture | |
| Jain et al. | Characterisation of polymer modified asphalt binders for roads and airfields | |
| Omranian et al. | Evaluation of asphalt mixtures performance produced via drum and batch mixing plants | |
| KR100640029B1 (en) | Recycled superior hot mix asphalt for paving road | |
| CN108191302A (en) | A kind of preparation method of multifunctional mineral asphalt concrete pavement material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |