CN104276786A - Method for preparing self-compaction asphalt concrete from premixed asphalt mastic - Google Patents
Method for preparing self-compaction asphalt concrete from premixed asphalt mastic Download PDFInfo
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- CN104276786A CN104276786A CN201410487245.1A CN201410487245A CN104276786A CN 104276786 A CN104276786 A CN 104276786A CN 201410487245 A CN201410487245 A CN 201410487245A CN 104276786 A CN104276786 A CN 104276786A
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Abstract
The invention relates to a method for preparing self-compaction asphalt concrete from premixed asphalt mastic, which is suitable for railway bed waterproof closing layers, road pavement and the like. According to the method, asphalt mastic is preformed by an asphalt mixing plant in a rear base; and the preformed asphalt mastic is transported to a site for crushing and remelting according to actual engineering demands, and the mixture of the self-compaction asphalt concrete is completed by a Cooker vehicle or similar small mobile equipment capable of heating and mixing, thus facilitating the long-distance transportation of the self-compaction asphalt concrete. The method is particularly suitable for regions where the demanded waterproof closing layer materials along the line are dispersed, construction of asphalt mixing stations is unsuited, building raw materials are lacked, etc., is flexible, avoids investment in asphalt mixing station establishment along the engineering line during traditional construction, and saves cost of mixing plant construction and other work; production and preforming can be performed by renting for the spare time of the existing mixing plant, thus further reducing the production cost; and production of the premixed asphalt mastic is not limited by working seasons.
Description
Technical field
The present invention relates to a kind of concrete preparation method, be specifically related to a kind of method that premixing bitumastic prepares self-compacting bituminous concrete.
Background technology
Self-compacting bituminous concrete is because of characteristics such as itself mix and stir, shaping, structures, have that barrier properties is good, freeze-thawing resistant, oil resistant, anti-aging, speed of application fast, adaptive deformation ability and the feature such as self-healing capability is strong, be applicable to the engineering that splitting resistance and weather resistance are had higher requirements, as cold district road; To the engineering that water-repellancy, deformation compliance and weather resistance have higher requirements, as Steel Bridge; To the impervious engineering with weather resistance high requirement, as concrete bridge deck, hydraulic anti-seepage body; Large-scale construction equipment cannot enter or the region of operation side critical constraints, as railway subgrade surface water-protected enclosure layer etc.; Need to repair fast, the engineering of traffic can not be affected, as railway subgrade surface water-protected enclosure layer pit repairing etc.
But the same with other most of hot-mixed asphaltic concretes, small serial production hot-mix asphalt mixture cost is higher, and shipment distance is comparatively large on its impact, and has dependency to batching plant.Design a kind of cost low, be convenient to long-distance transportation and the simple preparation method of process, become the direction of prior art research.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of method that premixing bitumastic prepares self-compacting bituminous concrete, utilize prefabricated bitumastic block and packaged type Cooker car maybe can heat the mixing that the similar small type mobile devices of mixing and stirring completes self-compacting bituminous concrete, overcome the shortcoming that traditional construction need arrange asphalt blending station along the line, maneuverability, cost is lower.
Technical scheme: a kind of premixing bitumastic prepares the method for self-compacting bituminous concrete, comprises thickness petroleum pitch or modifying asphalt, fine aggregate and filler; It is characterized in that, the method comprises the following steps:
(1) bitumastic is prepared: thickness petroleum pitch or modifying asphalt, satisfactory fine aggregate or sand and breeze are heated mixing by asphalt blending station, form hot bitumastic;
(2) prepare prefabricated section: the hot bitumastic in step (1) is prepared into bitumastic block, after naturally cooling, leave shady and cool dry place in as prefabricated section;
(3) form broken block: above-mentioned prefabricated section is carried out fragmentation, obtain broken block, described broken block particle diameter is not more than 5cm;
(4) remelting is stirred: broken block is transported to the on-the-spot heating and thermal insulation transport Cooker car being preheated to 180 ~ 230 DEG C that drops into and maybe can heats remelting in the similar small type mobile devices of mixing and stirring, allow the agitating vane of Cooker rotate with the speed average rate of 0.5 ~ 20 rev/min simultaneously, stir 30 ~ 180 minutes;
(5) add coarse aggregate to mix and stir: in step (4), add coarse aggregate with the speed average rate mix of 0.5 ~ 10 rev/min, churning time is 30 ~ 180 minutes;
(6) homogeneity of visual discharge port asphalt and mobility, can drop into the use that paves after mobility meets the demands; In this step, the additive of needs can be added according to the actual requirements in first 60 minutes in discharging.
Bitumastic block described in step (1) is the square of thickness 50 ~ 60mm.Shape bitumastic block being made rule is convenient to transport and stores, simultaneously convenient calculating consumption.
Pitch described in step (1) is satisfactory thickness petroleum pitch or modifying asphalt.
Fine aggregate described in step (1) is basalt or diabase or limestone; Described filler is the breeze that Wingdale grinds.
Step (1) described bitumastic mixes and stirs, shaping be carry out at a lower temperature, to reduce pitch oxidation.
Beneficial effect:
(1) previously prepared bitumastic block, the similar small type mobile devices heating mix utilizing cooker car maybe can heat to mix and stir is transported to scene simultaneously, is convenient to long-distance transportation.
(2) disperse the demand of water-protected enclosure layer material along the line, be not suitable for building the area of asphalt blending station and building material scarcity etc. to play obvious effect, process maneuverability, significantly reduces traditional construction need set up asphalt blending station input at line of project.
(3) premixing bitumastic is without the need to producing at the scene, so produce not by construction seasons and working-yard environmental limit.
Accompanying drawing explanation
Fig. 1 is bitumastic block schematic diagram of the present invention
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Premixing bitumastic prepares a method for self-compacting bituminous concrete, is applicable to railway subgrade surface water-protected enclosure layer, highway mats formation.Comprise pitch, fine aggregate and filler; It is characterized in that, the method comprises the following steps:
(1) bitumastic is prepared: at asphalt blending station, thickness petroleum pitch or modifying asphalt, satisfactory fine aggregate or sand and breeze are heated mixing, form hot bitumastic;
(2) prepare prefabricated section: the hot bitumastic in step (1) is prepared into bitumastic block, after naturally cooling, leave shady and cool dry place in as prefabricated section;
(3) prepare broken block: according to the actual needs of engineering, above-mentioned prefabricated section is carried out fragmentation, obtain broken block, described broken block particle diameter is not more than 5cm; Broken work can base or need working-yard to carry out in the wings, does not limit by place.
(4) remelting is stirred: broken block is dropped into the heating and thermal insulation transport Cooker car being preheated to 180 ~ 230 DEG C and maybe can heat the similar small type mobile devices remelting of mixing and stirring, allow the agitating vane of Cooker rotate with the speed average rate of 0.5 ~ 20 rev/min simultaneously, stir 30 ~ 180 minutes;
(5) add coarse aggregate to mix and stir: in step (4), add coarse aggregate with the speed average rate mix of 0.5 ~ 20 rev/min, churning time is 30 ~ 180 minutes;
(6) homogeneity of visual discharge port asphalt and mobility, can drop into the use that paves after mobility meets the demands; In this step, the additive of needs can be added according to the actual requirements in first 60 minutes in discharging.
Preferably, described bitumastic is 300mm × 300mm, the block of thickness about 50 ~ 60mm.Shape bitumastic block being made rule is convenient to transport and stores, simultaneously convenient calculating consumption.
Preferably, described pitch is thickness petroleum pitch or modifying asphalt, for hot-zone, warm area, for performance rate is not less than bi tumenf orr oad or the modifying asphalt of 70#; For Han Qu, for performance rate is the modifying asphalt that the bi tumenf orr oad of 90# or 110# or performance rate are not less than PG64-28.
Preferably, described fine aggregate is basalt or diabase or limestone, and described sand is Machine-made Sand;
Preferably, described filler is the breeze that Wingdale grinds.
During construction, should according to scale of the project, the Cooker car of configuration sufficient amount, is convenient to the long-distance transportation of self-compacting bituminous concrete, also can uses the similar small type mobile devices that can heat and mix and stir.
In step (1), matrix pitch Heating temperature is that 130 ~ 140 DEG C of (petroleum pitch), modifying asphalts are heated to 170-180 DEG C, and 0 ~ 3mm, 3 ~ 5mm specification fine aggregate are heated to 140 ~ 150 DEG C, limestone dust Heating temperature is 70 ~ 100 DEG C.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. premixing bitumastic prepares a method for self-compacting bituminous concrete, comprises thickness petroleum pitch or modifying asphalt, gathers materials and filler; It is characterized in that, the method comprises the following steps:
(1) bitumastic is prepared: thickness petroleum pitch or modifying asphalt, satisfactory fine aggregate and breeze are heated to 140 ~ 180 DEG C of mixings 60 ~ 90 seconds by the asphalt blending station in base in the wings, form hot even bitumastic;
(2) prepare prefabricated section: the hot even bitumastic in step (1) is prepared into bitumastic block by base in the wings, after naturally cooling, leave shady and cool dry place in as prefabricated section;
(3) form broken block: above-mentioned prefabricated section is carried out fragmentation, obtain broken block, described broken block particle diameter is not more than 5cm;
(4) remelting is stirred: broken block is transported to the on-the-spot heating and thermal insulation transport Cooker car being preheated to 180 ~ 230 DEG C that drops into and maybe can heats remelting in the similar small type mobile devices of mixing and stirring, allow its agitating vane rotate with the speed average rate of 0.5 ~ 20 rev/min simultaneously, stir 30 ~ 180 minutes;
(5) add coarse aggregate to mix and stir: in step (4), add coarse aggregate with the speed average rate mix of 0.5 ~ 20 rev/min, churning time is 30 ~ 180 minutes;
(6) homogeneity of visual discharge port asphalt and mobility, can drop into the use that paves after mobility meets the demands; In this step, the additive of needs can be added according to the actual requirements in first 60 minutes in discharging.
2. a kind of premixing bitumastic as claimed in claim 1 prepares the method for self-compacting bituminous concrete, it is characterized in that, bitumastic block described in step (1) is the square of thickness 50 ~ 60mm.
3. a kind of premixing bitumastic as claimed in claim 1 prepares the method for self-compacting bituminous concrete, it is characterized in that, described in step (1), pitch is thickness petroleum pitch or modifying asphalt.
4. a kind of premixing bitumastic as claimed in claim 1 prepares the method for self-compacting bituminous concrete, it is characterized in that, fine aggregate described in step (1) is basalt or diabase or limestone; Described filler is the breeze that Wingdale grinds.
5. a kind of premixing bitumastic as claimed in claim 1 prepares the method for self-compacting bituminous concrete, it is characterized in that, described fine aggregate is sand, and described sand is Machine-made Sand.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410487245.1A CN104276786B (en) | 2014-09-22 | 2014-09-22 | A kind of method that premixing bitumastic prepares self-compaction bituminous concrete |
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| CN201410487245.1A CN104276786B (en) | 2014-09-22 | 2014-09-22 | A kind of method that premixing bitumastic prepares self-compaction bituminous concrete |
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| CN104276786A true CN104276786A (en) | 2015-01-14 |
| CN104276786B CN104276786B (en) | 2018-01-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555019A (en) * | 2019-01-10 | 2019-04-02 | 广东省路桥建设发展有限公司 | The method of more slurry type asphalt repairing asphalt paving of steel bridge |
| CN109626877A (en) * | 2019-01-31 | 2019-04-16 | 招商局重庆交通科研设计院有限公司 | A kind of Prefabricated asphalt and preparation method thereof |
| CN109650785A (en) * | 2019-01-31 | 2019-04-19 | 招商局重庆交通科研设计院有限公司 | Prefabricated bituminous cements |
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| CN101078209A (en) * | 2006-05-26 | 2007-11-28 | 中国水利水电科学研究院 | Cold construction seal coat for asphalt concrete anti-seepage panel and construction technique thereof |
| CN103669152A (en) * | 2013-11-04 | 2014-03-26 | 沈阳市政集团有限公司 | Road surface construction method of ultrathin stone mastic asphalt mixture |
| CN103866667A (en) * | 2012-12-10 | 2014-06-18 | 中国石油天然气股份有限公司 | Semi-flexible heavy-duty pavement paving structure |
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2014
- 2014-09-22 CN CN201410487245.1A patent/CN104276786B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101078209A (en) * | 2006-05-26 | 2007-11-28 | 中国水利水电科学研究院 | Cold construction seal coat for asphalt concrete anti-seepage panel and construction technique thereof |
| CN103866667A (en) * | 2012-12-10 | 2014-06-18 | 中国石油天然气股份有限公司 | Semi-flexible heavy-duty pavement paving structure |
| CN103669152A (en) * | 2013-11-04 | 2014-03-26 | 沈阳市政集团有限公司 | Road surface construction method of ultrathin stone mastic asphalt mixture |
Non-Patent Citations (1)
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| 谭诗亮: ""沥青玛蹄脂混合料高温性能研究"", 《2012华南理工大学工程硕士学位论文》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555019A (en) * | 2019-01-10 | 2019-04-02 | 广东省路桥建设发展有限公司 | The method of more slurry type asphalt repairing asphalt paving of steel bridge |
| CN109626877A (en) * | 2019-01-31 | 2019-04-16 | 招商局重庆交通科研设计院有限公司 | A kind of Prefabricated asphalt and preparation method thereof |
| CN109650785A (en) * | 2019-01-31 | 2019-04-19 | 招商局重庆交通科研设计院有限公司 | Prefabricated bituminous cements |
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| CN104276786B (en) | 2018-01-05 |
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