CN107151108A - A kind of ultra-thin asphalt mixes and preparation method thereof, application - Google Patents
A kind of ultra-thin asphalt mixes and preparation method thereof, application Download PDFInfo
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- CN107151108A CN107151108A CN201610121647.9A CN201610121647A CN107151108A CN 107151108 A CN107151108 A CN 107151108A CN 201610121647 A CN201610121647 A CN 201610121647A CN 107151108 A CN107151108 A CN 107151108A
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- asphalt mixes
- thin
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- thin asphalt
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/36—Bituminous materials, e.g. tar, pitch
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
- E01C7/353—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them with exclusively bituminous binders; Aggregate, fillers or other additives for application on or in the surface of toppings with exclusively bituminous binders, e.g. for roughening or clearing
-
- 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
Abstract
The invention discloses a kind of ultra-thin asphalt mixes and preparation method thereof, application.Its raw material includes following components：Gather materials 80~90%, miberal powder 2~7%, Indonesia's BUTON rock asphalt 2.5~5%, matrix pitch 4~6% and polyester fiber 1~2%；Above-mentioned percentage is mass percent of each component relative to raw material total amount；The gradation types gathered materials are modified ECA 10.Ultra-thin asphalt mixes excellent combination property produced by the present invention, the performances such as rutting resistance, mechanical property, abrasion performance, water-fast damage performance, durability are increased substantially, and with excellent cryogenic property, itself cohesive strength is strong, substantially impermeable, cost performance is higher.The preparation technology of ultra-thin asphalt mixes of the present invention is simple, cheap.The thickness of thus obtained ultrathin asphalt pavement can be 2~2.5cm, and cost only needs 60~70 yuan/m2, cost performance is high, possesses extensive market application value.
Description
Technical field
The present invention relates to a kind of ultra-thin asphalt mixes and preparation method thereof, application.
Background technology
As China's road engineering is progressively conserved by newly-built turn to, to the demand of Asphalt Pavement Maintenance Technology by
Step increases.Urban road using bituminous paving is being built up after input soon, its surface layer especially superficial layer
Usually in the case where basic unit structural damage does not occur, because car load, temperature, precipitation etc. are outside
Under the internal factor joint effect such as factor and material property, mass defect, it will usually occur surface aging,
The different degrees of early diseases such as fine aggregate is scattered and disappeared, coarse aggregate is peeled off, pit-hole and slight crack.These
Disease not only influences road passage capability, and what is more important substantially reduces the service life of road.Go out
In reducing the influence of road pavement absolute altitude and saving the principle of construction costs, class technique is generally overlayed using thin layer
Overlay processing is carried out to asphalt surface course, so as to recover the apparent function of road, improve ride quality and extension
The service life on road surface.
Therefore ultrathin overlay technology arises at the historic moment, and the technology has good surface texture depth and apparent work
Can, the day of the volume of traffic is big, heavy-duty vehicle is more, speed is fast highway and Trunk highway can be applied to
Normal road maintenance, its major technique advantage is that speed of application is fast, the open to traffic time is short, therefore with prominent
The performance and application advantage gone out.At present, often the ultra-thin pitch of SBS modified pitch is mixed in the prior art
Material is applied to ultrathin overlay field, but it is higher (especially raw material SBS resins) to there is cost, is made
Ultra-thin pitch mixing road surface be up to 100~110 yuan/m2, and ultra-thin pitch mixing road surface preparation process
In, because SBS modified asphalt mixture viscosity is higher, easily settled in the case of high additive, it is necessary to stir
Machine is stirred continuously, and causes the waste of the energy.
Natural rock asphalt (Bu Dun islands kir) is to bury the oil in crust depth by earth crust structure fortune
Dynamic and pressure change, pours into earth's surface, is formed under special natural environment by deposition for many years with surface mineral
Bitumen.After exploitation is excavated, graininess is broken for.Wherein, bitumen stable content
10~40%, remaining is natural mineral matter.In the prior art, natural rock asphalt is often used as anti-car
Rut agent is used, generally should be in the middle surface layer of bituminous paving.Natural rock asphalt is applied to although also having at present
The situation of bituminous paving superficial layer, but be due to the fatigue behaviour of the asphalt of natural rock asphalt composition
It is difficult to up to standard, therefore obtained surface layer thickness is necessary for 4~5cm.There is not yet in the prior art will be natural
Kir is applied to the situation that ultra-thin wearing layer makes its thickness be less than 4cm.
The content of the invention
The technical problems to be solved by the invention are to overcome ultra-thin asphalt mixes of the prior art only
It is modified, cost is higher, and viscosity is higher, is easily settled in the case of high additive, it is necessary to agitator for SBS
It is stirred continuously, causes energy waste, and the asphalt of natural rock asphalt composition to be applied to asphalt road
During the superficial layer of face, fatigue behaviour be difficult to it is up to standard, obtained surface layer thickness must up to for 4~5cm lack
Fall into there is provided a kind of ultra-thin asphalt mixes and preparation method thereof, apply.Ultra-thin pitch produced by the present invention
In compound, mutually acted synergistically between various raw materials, make its excellent combination property, rutting resistance,
The performances such as mechanical property, abrasion performance, water-fast damage performance, durability are increased substantially；With excellent
Cryogenic property, extend the ultra-thin asphalt mixes use time after thin layer is overlayed, cost performance is higher；
Itself cohesive strength is strong, possesses preferably anti-performance of dispersing；Construction depth, infiltration coefficient technical indicator are significantly
Degree improves, substantially impermeable, with more excellent apparent performance.The ultra-thin pitch mixing of the present invention
Material may be directly applied to the bituminous paving of highway, Trunk highway, preventive maintenance construction operation, tool
There are extensive use value and DEVELOPMENT PROSPECT.The preparation technology of ultra-thin asphalt mixes of the present invention is simple, only
Need to be in production ultra-thin asphalt mixes mixing station increase kir conveying device, it is not necessary to which increase is independent
Storage tank and agitating device, it is cheap,.And the thickness of thus obtained ultrathin asphalt pavement can be
2~2.5cm, cost only needs 60~70 yuan/m2, cost performance is high, possesses extensive market application value.
The present invention solves above-mentioned technical problem by the following technical programs.
The invention provides a kind of ultra-thin asphalt mixes, its raw material includes following components：Gather materials 80~90%,
Miberal powder 2~7%, Indonesia's BUTON rock asphalt 2.5~5%, matrix pitch 4~6% and polyester fiber 1~2%；On
It is mass percent of each component relative to raw material total amount to state percentage；
The gradation types gathered materials are modified ECA-10, the specific level of the modified ECA-10
It is as described in Table 1 with composition：
Table 1
Wherein, the percentage is the mass percent by sieve aperture.
It is described to gather materials routinely, to generally comprise coarse aggregate and fine aggregate in the art in the present invention.It is described
Coarse aggregate refers to that nominal particle diameter is less than 9.5mm rubble for more than 2.36mm and maximum particle diameter.It is described thin
Gather materials the aggregate chips or sand for referring to that nominal particle diameter is below 2.36mm.
In the present invention, the consumption gathered materials preferably 83.9~85%, above-mentioned percentage is that each component is relative
In the mass percent of raw material total amount.
In the present invention, the miberal powder is the conventional miberal powder in this area, and preferable particle size is less than 0.075mm ore deposit
Material powder, is more preferably less than 0.075mm limestone powder for particle diameter.The limestone powder warp
Cross the grinding of grinding production equipment to form, filling effect is played in ultra-thin asphalt mixes.
In the present invention, the consumption preferably 5~6% of the miberal powder, above-mentioned percentage is each component relative to original
Expect the mass percent of total amount.
In the present invention, in Indonesia's BUTON rock asphalt, general bitumen content is 10~40%, percentage
For the mass percent relative to Indonesia's BUTON rock asphalt.
In the present invention, the consumption preferably 2.5~3% of Indonesia's BUTON rock asphalt, above-mentioned percentage is each
Mass percent of the component relative to raw material total amount.
In the present invention, the matrix pitch is the conventional matrix pitch in this area, preferably 70# matrix pitches.
According to common sense in the field, the 70# matrix pitches belong to asphalt.As long as meeting national regulation《It is public
Road Asphalt Pavement Construction Technique specification》The 70# matrix pitches of 70# matrix pitch technical requirements can be answered
For the present invention.The 70# matrix pitches of the present invention are the commercially available production of Ningbo City Zhenghai Jiang Ji Chemical Co., Ltd.s
Product.
In the present invention, the consumption preferably 5.1~5.5% of the matrix pitch, above-mentioned percentage is each group split-phase
For the mass percent of raw material total amount.
In the present invention, the polyester fiber is that this area is conventional, preferably meets following indexs：Tensile strength
>=550MPa, elongation at break 30 ± 9%, fusing point >=230 DEG C, 20 ± 4 μm of diameter, proportion
1.36~1.40g/cm3.The color of the polyester fiber is that this area is conventional, generally white.
In the present invention, the consumption preferably 2% of the polyester fiber, above-mentioned percentage be each component relative to
The mass percent of raw material total amount.
In the present invention, the modified ECA-10 refers to set up 7.2mm between 4.75 and 9.5 sieve apertures
Sieve aperture, preferably controls overall particle diameter distribution of gathering materials, and is modified the kir for using this grade to match somebody with somebody preparation ultra-thin
Asphalt is easier to form good high-temperature stability, low-temperature flexibility performance.
Present invention also offers a kind of preparation method of the ultra-thin asphalt mixes, it comprises the steps：
(1) by it is described gather materials, the mix of the polyester fiber and the kir, obtain mixture A；
(2) by mixture A and the matrix pitch mix, mixture B is obtained；
(3) by mixture B and the miberal powder mix, the ultra-thin asphalt mixes are obtained.
In step (1), according to common sense in the field, before the progress mix that gathers materials, typically preheated.
Preferably 170~190 DEG C of aggregate temperature after the preheating, most preferably more preferably 180~190 DEG C, 180 DEG C.
In step (1), preferably 40~50 seconds, more preferably 45~50 seconds time of the mix.
In step (1), preferably 175~185 DEG C, more preferably 180 DEG C of the temperature of the mix.
In step (2), preferably 140~160 DEG C, more preferably 150~160 DEG C of the temperature of the matrix pitch.
In step (2), preferably 13~18 seconds, more preferably 13~15 seconds time of the mix.
In step (2), preferably 175~185 DEG C, more preferably 180 DEG C of the temperature of the mix.
In step (3), preferably 5~8 seconds, the more preferably 5 seconds time of the mix.
Led present invention also offers a kind of ultra-thin asphalt mixes in maintenance of surface ultrathin overlay technique
Application in domain.
On the basis of common sense in the field is met, above-mentioned each optimum condition can be combined, produce this hair
Bright each preferred embodiments.
The present invention is raw materials used commercially available.
The positive effect of the present invention is：
In ultra-thin asphalt mixes produced by the present invention, mutually acted synergistically between various raw materials, make its comprehensive
Excellent performance is closed, rutting resistance, mechanical property, abrasion performance, water-fast damage performance, durability etc. is used
Performance is increased substantially；With excellent cryogenic property, the ultra-thin pitch mixing after thin layer is overlayed is extended
Expect use time, cost performance is higher；Itself cohesive strength is strong, possesses preferably anti-performance of dispersing；Construction is deep
Degree, infiltration coefficient technical indicator significantly improve, substantially impermeable, with more excellent apparent usability
Energy.The ultra-thin asphalt mixes of the present invention may be directly applied to the bituminous paving of highway, Trunk highway,
Preventive maintenance construction operation, with extensive use value and DEVELOPMENT PROSPECT.
The preparation technology of ultra-thin asphalt mixes of the present invention is simple, it is only necessary to mixed in production ultra-thin asphalt mixes
Close station increase kir conveying device, it is not necessary to increase independent storage tank and agitating device, it is cheap,.
And the thickness of thus obtained ultrathin asphalt pavement can be 2~2.5cm, cost only needs 60~70 yuan/m2,
Cost performance is high, possesses extensive market application value.
Embodiment
The present invention is further illustrated below by the mode of embodiment, but is not therefore limited the present invention to
Among described scope of embodiments.The experimental method of unreceipted actual conditions in the following example, according to normal
Rule method and condition, or selected according to catalogue.
In following embodiments and comparative example, gather materials, miberal powder, pitch, polyester fiber are satisfied by Ministry of Communications and issued
Cloth standard JTG F40-2004《Highway engineering Asphalt Pavement Construction Technique specification》Associated specifications.It is poly-
Ester fiber meets following indexs：Tensile strength >=550MPa, elongation at break 30 ± 9%, fusing point >=230 DEG C,
20 ± 4 μm of diameter, 1.36~1.40g/cm of proportion3.Gather materials including coarse aggregate and fine aggregate, coarse aggregate is
It is the rubble that more than 2.36mm and maximum particle diameter are less than 9.5mm to refer to nominal particle diameter, and fine aggregate refers to nominal
Particle diameter is below 2.36mm aggregate chips or sand.Miberal powder is the limestone powder that particle diameter is less than 0.075mm.
If without specified otherwise, the percentage described in following embodiments and comparative example refer both to each component relative to
Ultra-thin asphalt mixes raw material total amount mass percent.The matrix pitch of whole embodiments and comparative example is
The commercially available 70# matrix pitches of Ningbo City Zhenghai Jiang Ji Chemical Co., Ltd.s；Whole embodiments and comparative example
The bitumen content of Indonesia's BUTON rock asphalt is 25%.
Embodiment 1
As described in Table 2, following percentages are that each component is total relative to raw material to the raw material components of the present embodiment
The mass percent of amount.
Table 2
The present embodiment ultra-thin asphalt mixes gradation types are modified ECA-10, and specific gradation composition is shown in
Table 3.
Table 3
The present embodiment ultra-thin asphalt mixes preparation method comprises the following steps：
(1) 180 DEG C gather materials, polyester fiber and Indonesia's BUTON rock asphalt are added into mix pot, at 180 DEG C
Lower mix 45s, obtains mixture A；
(2) by mixture A and 150 DEG C of 70# matrix pitches at 180 DEG C, mix 15s obtains mixed
Compound B；
(3) by mixture B and miberal powder mix 5s, ultra-thin asphalt mixes are obtained.
Embodiment 2
The raw material components of the present embodiment are as described in Table 2.
The present embodiment ultra-thin asphalt mixes gradation types are modified ECA-10, and specific gradation composition is shown in
Table 3.
The present embodiment ultra-thin asphalt mixes preparation method comprises the following steps：
(1) 190 DEG C gather materials, polyester fiber and Indonesia's BUTON rock asphalt are added into mix pot, at 175 DEG C
Lower mix 50s, obtains mixture A；
(2) by mixture A and 160 DEG C of 70# matrix pitches at 175 DEG C, mix 13s obtains mixed
Compound B；
(3) by mixture B and miberal powder mix 8s, ultra-thin asphalt mixes are obtained.
Comparative example 1~2
The raw material components of comparative example 1~2 are as described in Table 2.
The ultra-thin asphalt mixes gradation types of comparative example 1~2 are modified ECA-10, specific gradation composition
It is shown in Table 3.
The preparation method be the same as Example 1 of the ultra-thin asphalt mixes of comparative example 1~2.
Effect example 1
According to Ministry of Communications《Highway engineering pitch and Asphalt Mixture Experiment code》(JTG E20-2011),
Performance test is carried out to embodiment, comparative example, test result is shown in Table 4.
Table 4
From table 4, ultra-thin asphalt mixes produced by the present invention can bear the Marshall of peak load
Stability index is increased substantially, it was demonstrated that ultra-thin asphalt mixes of the invention have more excellent mechanical property
Can technical indicator.
Ultra-thin asphalt mixes produced by the present invention, are moved in the rut of reflection compound high temperature anti-rut behavior
Stability technical indicator is increased substantially, it was demonstrated that ultra-thin asphalt mixes of the invention have more excellent resist
Rut performance.
Ultra-thin asphalt mixes produced by the present invention, the residual Marshall stability of performance is damaged in reflection water resistant
Index, freeze-thaw split retained strength are increased substantially than index, it was demonstrated that ultra-thin asphalt mixes of the invention
Performance is damaged with more excellent water resistant.
Ultra-thin asphalt mixes produced by the present invention, in agreeing for the anti-performance of dispersing of reflection ultra-thin asphalt mixes
Tower fort dispersion test compound loss late is greatly lowered, it was demonstrated that ultra-thin asphalt mixes of the invention have
More excellent anti-performance of dispersing.
Ultra-thin asphalt mixes produced by the present invention, are reflecting the construction depth of the apparent function of compound, are oozing
Water coefficient technical indicator significantly improves, substantially impermeable, it was demonstrated that ultra-thin asphalt mixes tool of the invention
There is more excellent apparent performance.
The thickness of ultrathin asphalt pavement can be as made from the ultra-thin asphalt mixes of the embodiment of the present invention 1~2
2~2.5cm, cost only needs 60~70 yuan/m2, cost performance is high, possesses extensive market application value.
Claims (10)
1. a kind of ultra-thin asphalt mixes, it is characterised in that its raw material includes following components：Gather materials
80~90%, miberal powder 2~7%, Indonesia's BUTON rock asphalt 2.5~5%, matrix pitch 4~6% and polyester fiber
1~2%；Above-mentioned percentage is mass percent of each component relative to raw material total amount；
The gradation types gathered materials are modified ECA-10, the specific level of the modified ECA-10
With composition as in the table below：
Wherein, the percentage is the mass percent by sieve aperture.
2. ultra-thin asphalt mixes as claimed in claim 1, it is characterised in that the use gathered materials
Measure as 83.9~85%.
3. ultra-thin asphalt mixes as claimed in claim 1, it is characterised in that the use of the miberal powder
Measure as 5~6%；
And/or, the miberal powder is the mineral powders that particle diameter is less than 0.075mm, and preferable particle size is less than
0.075mm limestone powder.
4. ultra-thin asphalt mixes as claimed in claim 1, it is characterised in that Indonesia's cloth is honest
The consumption of kir is 2.5~3%.
5. ultra-thin asphalt mixes as claimed in claim 1, it is characterised in that the matrix pitch
Consumption be 5.1~5.5%；
And/or, the matrix pitch is 70# matrix pitches.
6. ultra-thin asphalt mixes as claimed in claim 1, it is characterised in that the polyester fiber
Meet following indexs：Tensile strength >=550MPa, elongation at break 30 ± 9%, fusing point >=230 DEG C, directly
20 ± 4 μm of footpath, 1.36~1.40g/cm of proportion3。
7. a kind of preparation method of the ultra-thin asphalt mixes, it is characterised in that it includes following steps
Suddenly：
(1) by it is described gather materials, the mix of the polyester fiber and the kir, obtain mixture A；
(2) by mixture A and the matrix pitch mix, mixture B is obtained；
(3) by mixture B and the miberal powder mix, the ultra-thin asphalt mixes are obtained.
8. preparation method as claimed in claim 7, it is characterised in that in step (1), the collection
Material is carried out before mix, is preheated, and the aggregate temperature after the preheating is 170~190 DEG C, preferably
180~190 DEG C；
And/or, in step (1), the time of the mix is 40~50 seconds, preferably 45~50 seconds；
And/or, in step (1), the temperature of the mix is 175~185 DEG C.
9. preparation method as claimed in claim 7, it is characterised in that in step (2), the base
The temperature of matter pitch is 140~160 DEG C, preferably 150~160 DEG C；
And/or, in step (2), the time of the mix is 13~18 seconds, preferably 13~15 seconds；
And/or, in step (2), the temperature of the mix is 175~185 DEG C；
And/or, in step (3), the time of the mix is 5~8 seconds.
10. a kind of ultra-thin asphalt mixes as described in any one of claim 1~6 are ultra-thin in maintenance of surface
Application in cover technology field.
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| CN201610121647.9A CN107151108B (en) | 2016-03-04 | 2016-03-04 | A kind of ultra-thin asphalt mixes and preparation method thereof, application |
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| CN107151108B CN107151108B (en) | 2019-09-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107892510A (en) * | 2017-11-28 | 2018-04-10 | 广州大学 | A kind of thin overlay asphalt |
| CN113912329A (en) * | 2021-10-09 | 2022-01-11 | 招商局重庆交通科研设计院有限公司 | Compact ultrathin overlay asphalt mixture and preparation method thereof |
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| CN103204654A (en) * | 2013-04-28 | 2013-07-17 | 长安大学 | Micro-surfacing mixing material doped with rock asphalt and preparation method thereof |
| CN104099844A (en) * | 2014-08-13 | 2014-10-15 | 山东金茂建设集团有限公司 | Construction technology for environment-friendly and modified HMA surface layer |
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2016
- 2016-03-04 CN CN201610121647.9A patent/CN107151108B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204654A (en) * | 2013-04-28 | 2013-07-17 | 长安大学 | Micro-surfacing mixing material doped with rock asphalt and preparation method thereof |
| CN104099844A (en) * | 2014-08-13 | 2014-10-15 | 山东金茂建设集团有限公司 | Construction technology for environment-friendly and modified HMA surface layer |
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| 宋瑞: "ECA-10沥青混合料超薄罩面技术", 《中国市政工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107892510A (en) * | 2017-11-28 | 2018-04-10 | 广州大学 | A kind of thin overlay asphalt |
| CN113912329A (en) * | 2021-10-09 | 2022-01-11 | 招商局重庆交通科研设计院有限公司 | Compact ultrathin overlay asphalt mixture and preparation method thereof |
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| Publication number | Publication date |
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| CN107151108B (en) | 2019-09-27 |
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