CN105271947A - Preparation method of gap-graded BRMA mixture on the basis of rock asphalt compound modification - Google Patents
Preparation method of gap-graded BRMA mixture on the basis of rock asphalt compound modification Download PDFInfo
- Publication number
- CN105271947A CN105271947A CN201510600588.9A CN201510600588A CN105271947A CN 105271947 A CN105271947 A CN 105271947A CN 201510600588 A CN201510600588 A CN 201510600588A CN 105271947 A CN105271947 A CN 105271947A
- Authority
- CN
- China
- Prior art keywords
- mixture
- parts
- asphalt
- rock asphalt
- brma
- 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.)
- Pending
Links
Landscapes
- Road Paving Structures (AREA)
Abstract
The present invention discloses a preparation method of a gap-graded BRMA mixture on the basis of rock asphalt compound modification, and the preparation method comprises the following steps: 1), taking 35 to 45 parts of 10-15mm basalt coarse aggregate, 25-35 parts of 5-10mm basalt coarse aggregate and 20 to 30 parts of 0-3mm limestone fine aggregate for composition of a gap-graded ore material, and heating to 180 DEG C-190 DEG C; 2), adding 3 to 5 parts of high ash natural rock asphalt into the heated coarse and fine aggregate mixture, and drily mixing for 15-20s; 3), heating 3 to 5 parts of SBS modified asphalt to 160 DEG C-170 DEG C, spraying the heated SBS modified asphalt into the mixture of the step 2), and wetly mixing for 40-45s; and 4), adding 7-10 parts of ore powder into the mixture of the step 3), and stirring uniformly to obtain the desired product. Through mixing of the gap-graded ore material, the high ash natural rock asphalt and the SBS modified asphalt and high ash natural rock asphalt and SBS compound modification, ductility reduction caused by rock asphalt modification can be compensated, the SBS modified asphalt dosage can be reduced, environment pollution of the mixture production process can be reduced, and the cost is saved.
Description
Technical field
The present invention relates to a kind of gap grading BRMA compound preparation method composite modified based on rock asphalt.
Background technology
SBS modifying asphalt, refers to that interpolation SBS and stablizer are as composite modifier, improve the pavement performance of asphalt, oneself is through being promoted and application, but single SBS modifying asphalt to there is ageing resistance poor, cost intensive, the problem of the aspects such as environmental pollution is serious, and constructing operation is complicated.Therefore, seek the properties-correcting agent of high-performance, low cost, convenient construction, low-carbon environment-friendly, prepare asphalt tool and be of great significance.
Natural rock asphalt be through reach 1 years deposition, change, the bitumen generated under the comprehensive action of heat, pressure, oxidation, catalyst, bacterium etc.In natural rock asphalt, nitrogen element exists with functional group's form, makes rock asphalt have very strong wetting property and the high-resistance to free oxidation base, is particularly significantly improved with the adhesivity of gathering materials and stripper-resistance.The softening temperature of rock asphalt itself reaches more than 300 DEG C, after joining matrix pitch, makes it have good high temperature resistance, ageing resistance.Ash oontent reaches the rock asphalt of more than 50%, not only has the general characteristic of rock asphalt, and pitch wherein and ash content were by the interaction of 1 years, defined comparatively stable activated interface.Use it in the middle of asphalt, the effect to asphalt modification can not only be played, also can improve the performance of asphalt mastic, thus promote the over-all properties of asphalt.For applying of rock asphalt provides a kind of selection newly, to the construction and the maintenance quality that improve bituminous pavement, also there is certain meaning.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of gap grading BRMA compound preparation method composite modified based on rock asphalt.BRMA refers to rock asphalt and the composite modified SMA asphalt of SBS.
For achieving the above object, a kind of gap grading BRMA compound preparation method composite modified based on rock asphalt of the present invention, step comprises:
1), get the limestone fine aggregate of 35 ~ 45 parts of 10 ~ 15mm, 25 ~ 35 parts of 5 ~ 10mm basalt coarse aggregates and 20 ~ 30 parts of 0 ~ 3mm and be heated to 180 DEG C ~ 190 DEG C;
2), in the coarse aggregate, fine aggregate mixture of heating, 3 ~ 5 parts high ash content natural rock asphalts are added, dry mixing 15 ~ 20s;
3), by 3 ~ 5 parts of SBS modifying asphalts be heated to 160 DEG C ~ 170 DEG C, 2) mixture in spray heating after SBS modifying asphalt, wet-mixing 40 ~ 45s;
4), 3) mixture in add the breeze of 7 ~ 10 parts, namely obtain target product after stirring.
Further, aforesaid a kind of gap grading BRMA compound preparation method composite modified based on rock asphalt, described high ash content natural rock asphalt is the mixture of 25% ~ 30% unfilled bitumen and 70% ~ 75% natural ash content.
Further, aforesaid a kind of gap grading BRMA compound preparation method composite modified based on rock asphalt, the mass ratio of described 10 ~ 15mm basalt coarse aggregate, 5 ~ 10mm basalt coarse aggregate, 0 ~ 3mm limestone fine aggregate, breeze, rock asphalt, SBS modifying asphalt is 35 ~ 45:25 ~ 35:20 ~ 30:7 ~ 10:3 ~ 5:3 ~ 5.
Further, aforesaid a kind of gap grading BRMA compound preparation method composite modified based on rock asphalt, during described wet-mixing, temperature is 175 ~ 185 DEG C.
Beneficial effect of the present invention is:
The present invention by the mixing of gap grading mineral aggregate, high ash content natural rock asphalt and SBS modifying asphalt, by high ash content natural rock asphalt and SBS modifying asphalt composite modified, make up because rock asphalt modification causes the ductility of pitch to decline; Reduce SBS modifying asphalt consumption simultaneously, reduce in compound production process the pollution of environment and cost-saving.In construction process, adopt pneumatic-tired rollers to carry out multiple pressure, the effect carrying slurry Mi Shui can be reached, effectively reduce the infiltration coefficient on road surface.
Embodiment
The present invention will be further described below.
A kind of gap grading BRMA compound composite modified based on rock asphalt of the present invention, its component is mineral aggregate: rock asphalt: SBS modifying asphalt is 100:4:4.
Embodiment 1:
The making method of gap grading BRMA compound of the present invention comprises the following steps:
1), heat coarse aggregate, fine aggregate mixture to 180 DEG C, the mixture thick, fine aggregate mixture is basalt and limestone, is respectively 74 mass parts and 17 mass parts;
2), in the coarse aggregate, fine aggregate mixture of heating, 4 mass parts height ash content natural rock asphalts are added, dry mixing 15s;
3), by 4 mass parts SBS modifying asphalts be heated to 160 DEG C, 2) mixture in spray heating after SBS modifying asphalt, wet-mixing 40s, wet-mixing temperature is 175 DEG C;
4), 3) mixture in add 9 mass parts breezes after heating, namely obtain target product after stirring.
Embodiment 2:
The making method of gap grading BRMA compound of the present invention comprises the following steps:
1), heat coarse aggregate, fine aggregate mixture and breeze to 185 DEG C, coarse aggregate, fine aggregate mixture are the mixture of basalt and limestone, are respectively 72 mass parts and 20 mass parts;
2), in the coarse aggregate, fine aggregate mixture of heating, 4 mass parts height ash content natural rock asphalts are added, dry mixing 20s;
3), by 4.5 mass parts SBS modifying asphalts be heated to 165 DEG C, 2) mixture in spray heating after SBS modifying asphalt, wet-mixing 40s, wet-mixing temperature is 180 DEG C;
4), 3) mixture in add the breeze of 8 mass parts after heating, namely obtain target product after stirring.
In above-described embodiment step, high ash content natural rock asphalt contains the unfilled bitumen of 25% ~ 30% and the natural ash content of 70% ~ 75%, and natural ash content can serve as filler in asphalt mixing mixing, replaces part breeze in compound, improves its high-temperature stability.Because ash content has the ability of fine adsorptive pitch, strengthen pitch and the adhesion gathered materials, mix as stablizer in compound, do not mix fiber, improve the stability of compound, reduce production cost, thus improve the pavement performance of compound.Composite modified referring to of the present invention adopts high ash content natural rock asphalt and SBS, composite modified by both, makes up because rock asphalt modification causes the ductility of pitch to decline; Reduce SBS modifying asphalt consumption simultaneously, reduce in compound production process the pollution of environment and cost-saving.
In construction process, paver adopts balance beam to carry out levelling, and spreading speed is set in 4m/min, paver screed vibrational frequency is set as 800Hz, vibrate frequency 800Hz, and the paving material of working-yard controls at 170 DEG C, accomplishes slowly, evenly, incessantly to pave.The compound mode of rolling is: adopt Steel Roller first pressing 2 times, pneumatic-tired rollers press 6 times again, the compacting scheme that Steel Roller final pressure is 2 times, adopts pneumatic-tired rollers can realize putting forward the effect of slurry Mi Shui, effectively reduces the infiltration coefficient on road surface.
Table 1 composite modified BRMA compound properties
The common SMA mixture properties of table 2
Contrast known by table 1,2, composite modified BRMA mixture performance, all higher than common SMA mixture, especially cleavage strength, improves 2 ~ 3 times.
Above; be only preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should define with claim is as the criterion.
Claims (4)
1., based on a preparation method for the composite modified gap grading BRMA compound of rock asphalt, it is characterized in that, the preparation process of BRMA compound comprises:
1), get the limestone fine aggregate of 35 ~ 45 parts of 10 ~ 15mm basalt coarse aggregates, 25 ~ 35 parts of 5 ~ 10mm basalt coarse aggregates and 20 ~ 30 parts of 0 ~ 3mm and be heated to 180 DEG C ~ 190 DEG C;
2), in the coarse aggregate, fine aggregate mixture of heating, 3 ~ 5 parts high ash content natural rock asphalts are added, dry mixing 15 ~ 20s;
3), by 3 ~ 5 parts of SBS modifying asphalts be heated to 160 DEG C ~ 170 DEG C, 2) mixture in spray heating after SBS modifying asphalt, wet-mixing 40 ~ 45s;
4), 3) mixture in add the breeze of 7 ~ 10 parts, namely obtain target product after stirring.
2. the preparation method of the gap grading BRMA compound composite modified based on rock asphalt according to claim 1, is characterized in that, described high ash content natural rock asphalt is the mixture of 25% ~ 30% unfilled bitumen and 70% ~ 75% natural ash content.
3. the preparation method of the gap grading BRMA compound composite modified based on rock asphalt according to claim 1, it is characterized in that, the mass ratio of described 10 ~ 15mm basalt coarse aggregate, 5 ~ 10mm basalt coarse aggregate, 0 ~ 3mm limestone fine aggregate, breeze, rock asphalt, SBS modifying asphalt is 35 ~ 45:25 ~ 35:20 ~ 30:7 ~ 10:3 ~ 5:3 ~ 5.
4. the making method of the gap grading BRMA compound composite modified based on rock asphalt according to claim 1, is characterized in that, described 3) wet-mixing temperature be 175 ~ 185 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510600588.9A CN105271947A (en) | 2015-09-18 | 2015-09-18 | Preparation method of gap-graded BRMA mixture on the basis of rock asphalt compound modification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510600588.9A CN105271947A (en) | 2015-09-18 | 2015-09-18 | Preparation method of gap-graded BRMA mixture on the basis of rock asphalt compound modification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105271947A true CN105271947A (en) | 2016-01-27 |
Family
ID=55141871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510600588.9A Pending CN105271947A (en) | 2015-09-18 | 2015-09-18 | Preparation method of gap-graded BRMA mixture on the basis of rock asphalt compound modification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105271947A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533491A (en) * | 2020-05-25 | 2020-08-14 | 上海佳砼新材料科技发展有限公司 | Environment-friendly asphalt mixture and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0999237A1 (en) * | 1998-11-05 | 2000-05-10 | Gerland S.A. | Process for preparing a cold-spreadable bitumen aggregate |
| CN101134655A (en) * | 2007-07-31 | 2008-03-05 | 武汉理工大学 | Gneiss asphalt concrete and method for making same |
| CN101289578A (en) * | 2007-04-17 | 2008-10-22 | 上海建设机场道路工程有限公司 | Modified bitumen and bituminous mixture |
| CN103613940A (en) * | 2013-11-15 | 2014-03-05 | 同济大学 | Rock asphalt composite modifier as well as preparation method and application thereof |
-
2015
- 2015-09-18 CN CN201510600588.9A patent/CN105271947A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0999237A1 (en) * | 1998-11-05 | 2000-05-10 | Gerland S.A. | Process for preparing a cold-spreadable bitumen aggregate |
| CN101289578A (en) * | 2007-04-17 | 2008-10-22 | 上海建设机场道路工程有限公司 | Modified bitumen and bituminous mixture |
| CN101134655A (en) * | 2007-07-31 | 2008-03-05 | 武汉理工大学 | Gneiss asphalt concrete and method for making same |
| CN103613940A (en) * | 2013-11-15 | 2014-03-05 | 同济大学 | Rock asphalt composite modifier as well as preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 宋绍杰: "岩沥青对沥青混合料路用性能的影响研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533491A (en) * | 2020-05-25 | 2020-08-14 | 上海佳砼新材料科技发展有限公司 | Environment-friendly asphalt mixture and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102795812B (en) | A kind of warm-mixed recycled asphalt mixture and preparation method thereof | |
| CN101885870B (en) | High-viscosity thin-layer bituminous mixture modifier and application thereof | |
| CN103866667B (en) | Half flexible Supporting Load Pavement paving structure | |
| CN104031397B (en) | A kind of regeneration epoxy asphalt road surface and preparation method thereof | |
| WO2007032915A3 (en) | Bituminous paving composition and process for bituminous paving | |
| CN103774537B (en) | A kind of asphalt pavement regeneration method | |
| CN105236831A (en) | Aged-asphalt regeneration agent, regenerated asphalt mixture and preparation method of two | |
| CN102351468A (en) | Regenerative asphalt mixture and preparation method thereof | |
| CN101050093A (en) | Composition of road surface material of pervious cement concrete by using steel slag as aggregate, and method | |
| WO2014032548A1 (en) | Cold-coating asphalt, and preparation method and construction method thereof | |
| CN101899218A (en) | Asphalt warm-mix agent and asphalt mixture mixed by same as well as preparation methods thereof | |
| CN104773976A (en) | Preparation method of plant hot recycled asphalt mixture containing recycling agent | |
| KR101630835B1 (en) | The Composition and Manufacture method Asphalt Flowability It can be prepared in Using the cooker Construction site Apply wet surfaces | |
| CN103774517B (en) | A kind of asphalt pavement regeneration method of adding regenerative agent | |
| CN102285774A (en) | Asphalt pavement warm mixing regenerator and preparation method and using method thereof | |
| CN107082591B (en) | Paving material for municipal construction and building engineering and design method thereof | |
| CN102425092A (en) | Ultra-viscous seal coat on bituminous pavement and construction method thereof | |
| CN105036613A (en) | Crack pressure-sensitive solidification self-healing asphalt concrete, as well as preparation method and application method thereof | |
| CN105152581A (en) | Self-healing asphalt concrete based on microwave heating and containing metal fibers and preparation method of self-healing asphalt concrete | |
| CN105017787B (en) | A kind of low cost length takes time high performance modified bitumen and preparation method thereof in | |
| CN103420643A (en) | Method for preparing asphalt concrete with recycled aggregate and application of asphalt concrete in asphalt pavement | |
| CN105000826A (en) | Staging blending normal-temperature asphalt mixture preparing technology | |
| CN104724980B (en) | A kind of cold mixing type bituminous concrete mixture and preparation method thereof | |
| CN105694786B (en) | Blanket type asphaltic road-mix surface course water-base epoxy bonding agent and its construction method | |
| CN105271947A (en) | Preparation method of gap-graded BRMA mixture on the basis of rock asphalt compound modification |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160127 |