CN106083177A - Foam warm mix SMA 13 asphalt, preparation method and method of evaluating performance - Google Patents
Foam warm mix SMA 13 asphalt, preparation method and method of evaluating performance Download PDFInfo
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- CN106083177A CN106083177A CN201610404347.1A CN201610404347A CN106083177A CN 106083177 A CN106083177 A CN 106083177A CN 201610404347 A CN201610404347 A CN 201610404347A CN 106083177 A CN106083177 A CN 106083177A
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- Prior art keywords
- asphalt
- sma
- warm mix
- preparation
- foam warm
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Classifications
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- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
Open a kind of foam warm mix SMA 13 asphalt of the present invention, preparation method and method of evaluating performance, the preparation method of foam warm mix SMA 13 asphalt, including following operating procedure, modified pitch is carried out mechanical foaming process, prepare foaming modifying Colophonium；Sieve gathering materials, take coarse aggregate and the fine aggregate of required grating；The mixing of gathering materials that will choose, adds cotton-shaped lignin fibre and foaming modifying Colophonium prepared by (1), stirs, obtain target product.Drastically vaporize in middle hard pitch, gas and water simultaneously enter asphalt foaming apparatus, expand rapidly and generate foamed asphalt, the Colophonium formed is temporarily increased its volume, reduce viscosity, can the most fully wrap and gather materials, increase its workability, make heat mix SMA 13 asphalt to mix and stir temperature and be reduced to about 160 DEG C from 180～185 DEG C, reduce and mix and stir temperature, it is possible to reduce the degree of aging of SMA 13 asphalt, reduce the generation of harmful gas.
Description
Technical field
The present invention relates to a kind of road asphalt compound, particularly relate to a kind of foam warm mix SMA-13 asphalt,
Preparation method and method of evaluating performance.
Background technology
Along with greatly developing green traffic transportation system, strengthen the field of traffic science and technology of high-efficiency environment friendly, weather close friend
Research and extension, in this context, warm-mixed asphalt technology is arisen at the historic moment.But existing warm mix technology is in application process,
Still continue to use the method for designing of hot-mix asphalt mixture, do not give full play to the advantage that warm-mixed asphalt technical energy saving reduces discharging.Simultaneously
Old pavement material is given it up by the transformation of existing old pavement, maintenance process, causes the pollution of environment.
Organic additive class warm mix technology is used, due to additive kind warm mix skill for the existing warm mix technology overwhelming majority
Art increases production cost, additive evaluation methodology imperfection, and Asphalt Mixture is unstable, and present stage is badly in need of research one fall
Low cost, free of contamination warm mix technology.
Because the defect that above-mentioned existing asphalt exists, the present inventor is based on being engaged in this type of product design manufacture
Practical experience abundant for many years and Professional knowledge, and coordinate the utilization of scientific principle, the most in addition research and innovation are a kind of new to founding
Type foam warm mix SMA-13 asphalt, preparation method and method of evaluating performance so that it is have more practicality.Through constantly
Research, design, and after repeatedly studying sample and improving, finally create the present invention having practical value.
Summary of the invention
Present invention is primarily targeted at, overcome the defect that existing asphalt exists, and a kind of novel bubble is provided
Foam warm mix SMA-13 asphalt, preparation method and method of evaluating performance, reduce cost, thus more suitable for practicality, and tool
There is the value in industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.Propose according to the present invention
The preparation method of foam warm mix SMA-13 asphalt, including following operating procedure,
(1) modified pitch is carried out mechanical foaming process, prepare foaming modifying Colophonium；
(2) sieve gathering materials, take coarse aggregate and the fine aggregate of required grating；
(3) mixing of gathering materials that will choose, adds cotton-shaped lignin fibre and foaming modifying Colophonium prepared by (1), stirring
Uniformly, target product is obtained.
Further, the preparation method of aforesaid foam warm mix SMA-13 asphalt, SBS is changed by described (1)
Property Colophonium is heated to 150～165 DEG C, adds water, mechanical foaming.
Further, the preparation method of aforesaid foam warm mix SMA-13 asphalt, foaming water amount accounts for SBS and changes
The 2～4% of property asphalt content.
Further, the preparation method of aforesaid foam warm mix SMA-13 asphalt, the temperature of foaming water is
20～30 DEG C.
Further, the preparation method of aforesaid foam warm mix SMA-13 asphalt, the whipping temp of described (3)
It it is 120～150 DEG C.
Aforesaid foam warm mix SMA-13 asphalt, is made up of foaming modifying Colophonium and mineral aggregate, lignin fibre.
Further, aforesaid foam warm mix SMA-13 asphalt, described mineral aggregate includes that particle diameter is 9.5-
The 2# that the 1# of 13.2mm expects, particle diameter is 4.75-9.5mm expects, particle diameter is 2.36-4.75mm 3# material, particle diameter are 0-2.36mm's
4# material and breeze.
Further, aforesaid foam warm mix SMA-13 asphalt, 1# material in described mineral aggregate, 2# expects, 3# expects, 4#
The mass ratio range of material and breeze is 35～45:30～40:4～10:8～15:8～15.
The foam warm mix SMA-13 asphalt of preparation carries out performance evaluation, and foam warm mix SMA-13 asphalt can
Compactibility evaluation test, the evaluation test of wrapping property and workability evaluation test.
By technique scheme, foam warm mix SMA-13 asphalt, preparation method and the performance evaluation of the present invention
Method at least has the advantage that
The foam warm mix SMA-13 asphalt preparation method of the present invention, middle hard pitch, gas and water simultaneously enter
Drastically vaporizing in asphalt foaming apparatus, expand rapidly and generate foamed asphalt, the Colophonium of formation is temporarily increased its volume, reduces glutinous
Degree, can the most fully wrap and gather materials, increase its workability so that heat is mixed SMA-13 asphalt and mixed and stirred temperature
It is reduced to about 160 DEG C from 180～185 DEG C, reduces and mix and stir temperature, it is possible to reduce the degree of aging of SMA-13 asphalt,
Reduce the generation of harmful gas；
The foam warm mix SMA-13 compound that the present invention prepares has outstanding antiskid, Rut resistance and endurance quality,
Without the need for additive, reduce production cost.SMA asphalt-mastic-broken stone is a kind of by Colophonium, fiber, fines and breeze structure
The bitumastic become is filled between coarse aggregate skeleton the gap-graded mix formed in gap.It possesses outstanding resisting
Cunning, Rut resistance and endurance quality, be widely used in the heavy traffic road such as highway, airfield runway.
The foam warm mix SMA-13 asphalt of the present invention and preparation method reduce the temperature of construction environment, save money
Source, reduces energy consumption discharge, it is to avoid environmental pollution, has preferable economic and environmental benefit, and foam warm mix SMA-prepared
13 compounds have outstanding antiskid, Rut resistance and endurance quality, and foaming modifying Colophonium is effectively reduced by mechanical foaming mode
Construction mix viscosity, thus reduce construction temperature, make compound properties of product meet the requirements simultaneously.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, after describing in detail such as with presently preferred embodiments of the present invention below.
Detailed description of the invention
By further illustrating the technological means and effect that the present invention taked by reaching predetermined goal of the invention, to according to this
Foam warm mix SMA-13 asphalt, preparation method and its detailed description of the invention of method of evaluating performance, the feature that invention proposes
And effect, after describing in detail such as.
Embodiment 1
Foam warm mix SMA-13 asphalt composition (weight portion) of the present invention:
1) 400 parts of mineral aggregate: 1# material, 340 parts of 2# material, 50 parts of 3# material, 4# expect 110 parts, breeze 100 parts；
2) foamed asphalt: SBS modified pitch 61 parts, foaming water 1.83 parts.
The production equipment that the foam warm mix SMA-13 asphalt of the present invention uses is:
1) foamed asphalt production equipment can ensure maximum gas pressure 1000kPa, maximum hydraulic pressure 1000kPa, Colophonium pressure
1000kPa, it is suitable for asphalt temperature is 155～165 DEG C, and in the case of certain water consumption, can continual produce
Foamed asphalt, and the foamed asphalt quality produced of every batch is up to 10～20kg；
2) use and foaming machine matches horizontal mixes pot, it is desirable to horizontal pot of mixing can meet the mix of 100～200 DEG C
Temperature, and continuously operating, it is ensured that foamed asphalt with gather materials fully wrap up in attached.
Foam warm mix SMA-13 asphalt preparation method includes following operating procedure:
1) coarse aggregate of heating, fine aggregate, lignin fibre are placed in and mix and stir in pot, suitably mix with little scoop.
2) the foaming modifying Colophonium of indoor foaming is injected directly into mixes and stirs in pot, fully mix and stir SMA-13 compound (120
DEG C～160 DEG C) 1-1.5min.
3) time-out mixes and stirs, and adds the breeze of heating, continues to mix and stir to uniformly, and makes asphalt be maintained at requirement
Mix and stir in temperature range, total mixing time is 3min, i.e. obtains final foam warm mix SMA-13 asphalt.
The foam warm mix SMA-13 asphalt mineral aggregate gradation of preparation is as shown in table 1.
Table 1 mineral aggregate gradation forms
Embodiment 2
Foam warm-mixed recycled asphalt mixture composition (weight portion):
1) 430 parts of mineral aggregate: 1# material, 320 parts of 2# material, 50 parts of 3# material, 4# expect 90 parts, breeze 110 parts；
2) foamed asphalt: SBS modified pitch 60 parts, foaming water 1.8 parts.
Indoor production equipment is with embodiment 1.
Foam warm mix SMA-13 asphalt preparation method includes following operating procedure:
1) coarse aggregate of heating, fine aggregate, lignin fibre are placed in and mix and stir in pot, suitably mix with little scoop.
2) the foaming modifying Colophonium of indoor foaming is injected directly into mixes and stirs in pot, fully mix and stir SMA-13 compound (120
DEG C～160 DEG C) 1-2min.
3) time-out mixes and stirs, and adds the breeze of heating, continues to mix and stir to uniformly, and makes asphalt be maintained at requirement
Mix and stir in temperature range, total mixing time is 4min, i.e. obtains final foam warm mix SMA-13 asphalt.
The foam warm mix SMA-13 asphalt mineral aggregate gradation prepared is as shown in table 2
Table 2 mineral aggregate gradation forms
Embodiment 3
Foam warm-mixed recycled asphalt mixture composition (weight portion):
1) 370 parts of mineral aggregate: 1# material, 360 parts of 2# material, 60 parts of 3# material, 4# expect 120 parts, breeze 90 parts；
2) foamed asphalt: SBS modified pitch 61 parts, foaming water 1.83 parts.
Indoor production equipment is with embodiment 1.
Foam warm mix SMA-13 asphalt preparation method includes following operating procedure:
1) coarse aggregate of heating, fine aggregate, lignin fibre are placed in and mix and stir in pot, suitably mix with little scoop.
2) the foaming modifying Colophonium of indoor foaming is injected directly into mixes and stirs in pot, fully mix and stir SMA-13 compound (130
DEG C～160 DEG C) 1-1.5min.
3) time-out mixes and stirs, and adds the breeze of heating, continues to mix and stir to uniformly, and makes asphalt be maintained at requirement
Mix and stir in temperature range, total mixing time is 3～4min, i.e. obtains final foam warm mix SMA-13 asphalt.
Foam warm mix SMA-13 asphalt mineral aggregate gradation is as shown in table 3.
Table 3 mineral aggregate gradation forms
Effect example
The foam warm mix SMA-13 asphalt each embodiment prepared carries out performance test:
Marshall Test: take foam warm mix SMA-13 asphalt, Marshall is two-sided respectively hits real 75 shaping test pieces, becomes
Type temperature is preferably 135 DEG C.With reference to " highway engineering Colophonium and Asphalt Mixture Experiment code " (JTG E20-2011) code requirement
Carrying out Marshall Test, it is little that the marshal piece of 135 DEG C of (unified forming temperature) compacted unders is placed in room temperature cooling 12 by test
The demoulding time after, then carries out volume parameter test.
Immersion Marshall test: advise according to " highway engineering Colophonium and Asphalt Mixture Experiment code " (JTG E20-2011)
Model requires to carry out immersion Marshall test, evaluates anti-water damage property, often 6 parallel test specimens of group.
Indirect tensile test on frozen-thaw: according to " highway engineering Colophonium and Asphalt Mixture Experiment code " (JTG E20-2011) specification
Requirement carries out indirect tensile test on frozen-thaw, evaluates anti-water damage property, often 8 parallel test specimens of group.
Thimble test: advise according to " highway engineering Colophonium and Asphalt Mixture Experiment code " (JTG E20-2011)
Model requires to carry out wheel tracking test, evaluates high-temperature behavior, often three parallel tests of group.
Workability is tested: workability can be evaluated by the gyratory compaction shear stress of asphalt molding, by measuring
The maximum shear stress during force value needed for gyratory compaction angle, i.e. gyratory compaction, reacts the workability during compacting.
Wrap up in attached performance test: wrap up in the hydrophobicity performance of attached asphalt membrane according to surface of aggregate, with the suction of gathering materials being wrapped with asphalt membrane
Water rate is passed judgment on surface of aggregate Colophonium and is wrapped up in attached situation.The aggregate water absorption being wrapped with asphalt membrane is the least, and it is the best that it wraps up in attached performance.
Rammability can be tested: rammability uses the density under initial rotation number of machine passes as weighing rammability
Standard.The gyratory compaction number of times of 92% relative density is reached than the rammability energy characterizing warm mix with test specimen.
Each result of the test is as shown in table 4.
Table 4 each foam warm mix SMA-13 performance of asphalt mixture test result
As can be seen from the above table, foam warm mix SMA-13 asphalt prepared by the present invention all can meet performance requirement,
Phase specific heat mixes SMA-13 asphalt, and foam Warm-Mix Bitumen Mixture SMA-13 reduction construction temperature 20～30 DEG C, minimizing is executed
The energy consumption of work and noxious gas emission.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people being familiar with this specialty
Member, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or modification
For the Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit of the foundation present invention
Any simple modification, equivalent variations and the modification being made above example, all still falls within the range of technical solution of the present invention.
Claims (9)
1. the preparation method of a foam warm mix SMA-13 asphalt, it is characterised in that: include following operating procedure,
(1) modified pitch is carried out mechanical foaming process, prepare foaming modifying Colophonium；
(2) sieve gathering materials, take coarse aggregate and the fine aggregate of required grating；
(3) mixing of gathering materials that will choose, adds cotton-shaped lignin fibre and foaming modifying Colophonium prepared by (1), stirs,
Obtain target product.
The preparation method of foam warm mix SMA-13 asphalt the most according to claim 1, it is characterised in that: described
(1) in, SBS modified pitch is heated to 150～165 DEG C, adds water, mechanical foaming.
The preparation method of foam warm mix SMA-13 asphalt the most according to claim 2, it is characterised in that: foaming is used
The water yield accounts for the 2～4% of SBS modified pitch consumption.
The preparation method of foam warm mix SMA-13 asphalt the most according to claim 2, it is characterised in that: foaming is used
The temperature of water is 20～30 DEG C.
The preparation method of foam warm mix SMA-13 asphalt the most according to claim 1, it is characterised in that: described
(3) whipping temp is 120～150 DEG C.
Foam warm mix SMA-prepared by the preparation method of foam warm mix SMA-13 asphalt the most according to claim 1
13 asphalts, it is characterised in that: it is made up of foaming modifying Colophonium and mineral aggregate, lignin fibre.
Foam warm mix SMA-13 asphalt the most according to claim 6, it is characterised in that: described mineral aggregate includes particle diameter
For 9.5-13.2mm 1# expect, particle diameter be 4.75-9.5mm 2# material, particle diameter be 2.36-4.75mm 3# material, particle diameter be 0-
The 4# material of 2.36mm and breeze.
Foam warm mix SMA-13 asphalt the most according to claim 7, it is characterised in that: 1# material in described mineral aggregate,
2# expects, 3# expects, the mass ratio range of 4# material and breeze is 35～45:30～40:4～10:8～15:8～15.
9. the foam warm mix SMA-13 asphalt of pair claim 1 preparation carries out performance evaluation, it is characterised in that: foam temperature
Mix SMA-13 asphalt rammability evaluation test, the evaluation test of wrapping property and workability evaluation test.
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| CN201610404347.1A CN106083177A (en) | 2016-06-12 | 2016-06-12 | Foam warm mix SMA 13 asphalt, preparation method and method of evaluating performance |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630771A (en) * | 2017-01-07 | 2017-05-10 | 中铁十五局集团第五工程有限公司 | Highway foam asphalt mixture, and production process and detection method thereof |
| CN107805005A (en) * | 2017-09-30 | 2018-03-16 | 沧州市市政工程股份有限公司 | A kind of foamed asphalt warm mix rubber modified mixes and preparation method and construction method |
| CN110208578A (en) * | 2019-06-24 | 2019-09-06 | 河海大学 | A kind of adhesive property evaluation method of foam warm-mixed asphalt difference foaming stages |
| WO2021037961A1 (en) | 2019-08-28 | 2021-03-04 | Basf Se | Process for preparing foamed polymer-modified bitumen compositions |
| CN113432947A (en) * | 2021-07-05 | 2021-09-24 | 山西省交通科技研发有限公司 | Method for evaluating influence of asphalt aging on anti-skid performance of asphalt mixture |
| CN113432947B (en) * | 2021-07-05 | 2024-05-17 | 山西省交通科技研发有限公司 | Evaluation method for influence of asphalt aging on anti-skid performance of asphalt mixture |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630771A (en) * | 2017-01-07 | 2017-05-10 | 中铁十五局集团第五工程有限公司 | Highway foam asphalt mixture, and production process and detection method thereof |
| CN107805005A (en) * | 2017-09-30 | 2018-03-16 | 沧州市市政工程股份有限公司 | A kind of foamed asphalt warm mix rubber modified mixes and preparation method and construction method |
| CN110208578A (en) * | 2019-06-24 | 2019-09-06 | 河海大学 | A kind of adhesive property evaluation method of foam warm-mixed asphalt difference foaming stages |
| WO2021037961A1 (en) | 2019-08-28 | 2021-03-04 | Basf Se | Process for preparing foamed polymer-modified bitumen compositions |
| CN113432947A (en) * | 2021-07-05 | 2021-09-24 | 山西省交通科技研发有限公司 | Method for evaluating influence of asphalt aging on anti-skid performance of asphalt mixture |
| CN113432947B (en) * | 2021-07-05 | 2024-05-17 | 山西省交通科技研发有限公司 | Evaluation method for influence of asphalt aging on anti-skid performance of asphalt mixture |
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Application publication date: 20161109 |