CN204529670U - A kind of warm mix SMA modified asphalt concrete modified particles and interpolation equipment thereof - Google Patents
A kind of warm mix SMA modified asphalt concrete modified particles and interpolation equipment thereof Download PDFInfo
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- CN204529670U CN204529670U CN201520028957.7U CN201520028957U CN204529670U CN 204529670 U CN204529670 U CN 204529670U CN 201520028957 U CN201520028957 U CN 201520028957U CN 204529670 U CN204529670 U CN 204529670U
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- 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
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Abstract
The utility model discloses a kind of warm mix SMA modified asphalt concrete modified particles, comprise polymer modification layer and be wrapped in the rubber bisque outside described polymer modification layer, described polymer modification layer comprises diatomite layer, modification oxidant layer, layer of polyester fiber and ethylene-vinyl acetate copolymer layer from the inside to the outside successively.Also disclose the interpolation equipment of this kind of modified particles.The multiple additive with different modified function is rolled into the modified particles of multilayered structure by the utility model, and add flexibly and easily in bituminous concrete to mix by interpolation equipment modification is carried out to it, can be used for the laying of High Grade Bitumen Pavement, not only get and replaced traditional SBS asphalt modification technology, solve the difficult problems such as the transport of SBS modifying asphalt, storage; Reduce investment simultaneously, pollute and energy consumption, and improve comprehensive pavement performance, the prolonging service life of pavement of bituminous pavement, reduce Road construction and maintenance cost, there is high economic worth and social benefit.
Description
Technical field
The utility model belongs to asphalt pavement construction technical field, specifically relates to a kind of warm mix SMA modified asphalt concrete modified particles, also relates to the interpolation equipment of this kind of modified particles.
Background technology
Tradition SMA modified asphalt concrete technology develops the Germany starting from the seventies, and is widely used in High Grade Bitumen Pavement construction.China introduces this technology the end of the nineties, be widely used simultaneously, its process technologies feature be first by matrix pitch by special equipment, add SBS rubber, sulphur, stablizer, the additives such as antistripping agent are mixed together, chemical modification is carried out by high speed shear, produce SBS modifying asphalt, again SBS modifying asphalt is transported to asphalt mixing plant by special thermos van, with the building stones of different size, breeze carries out mixture stirring, the fiber (trevira and wood fibre) simultaneously adding different varieties stirs, produce SMA modified asphalt concrete.But there is complex process, with high investment, high energy consumption, high pollution, storage time short, the low inferior difficult problem of operating efficiency in this technology.Therefore, need to develop a kind of warm mix SMA modified asphalt concrete modified particles in a hurry and properties-correcting agent adds equipment, to reduce Road construction and maintenance cost, lifting construction efficiency, to preserve the ecological environment, save social resources and improve the comprehensive pavement performance on road surface.
In prior art, generally add warm-mixing agent when asphalt mixes and stirs, the utility model comprises one deck warm mix oxidant layer at modified particles, and together with the structure of other modified functions, obtain a kind of modified particles with over-all properties, in directly adding matrix pitch at the construction field (site) to and gathering materials, just can obtain warm mix SMA modified asphalt concrete fast.Under same material (pitch and building stones) and proportioning condition, add APTL/01 warm-mixing agent, warm mix compound generally than conventional heat mix can reduce mix and stir, pave, compacting temperature 30 ~ 60 DEG C, pavement performance is better than the plurality of advantages such as hot-laid mixture; Extend construction seasons, can construct under the envrionment temperature more than 0 DEG C; Energy-conserving and environment-protective, improve operating environment, greenhouse gas emission about 50% can be reduced, reduce the toxic gas discharges more than 80% such as glance coal; Prevent ageing of asphalt, ensure compaction and construction quality, delay the bituminous pavement life-span.
Development of anti stripping agent for asphalt forms physical adsorption or the chemical structure that relies on it special to make it carry out combination reaction with gathering materials with surface of aggregate, form powerful chemical tie between them, thus improve pitch and the adhesivity of gathering materials, make it have good resistance to heat aging and anti-water damage.The adhesive power strengthening pitch and gather materials between (acid stone), and the intensity of anti-water damage, the liquid antistripping agent that the work-ing life extending road surface is derived by amino amine.Add in the production and application of bituminous concrete, the viscosity of bituminous concrete can be strengthened, reduce moisture to the infringement chance of pitch, extend the work-ing life on road surface.There is the feature of low smell, than other like product, produce less smog during heating, belong to environmentfriendly products.
Preferably, this modified particles is right cylinder particle, and particle diameter is 8 ~ 13mm, and particle length is 15 ~ 30mm.The size design of modified particles can make it can melting fast in asphalt modification process, participates in reaction.
SMA modified asphalt concrete of the prior art, generally that pitch is placed in large-scale modified device, it is modified, be transported to after asphalt mixing building stirs together with fiber, building stones, for the laying on road surface, its shortcoming is: 1, equipment energy consumption is large, needs a large amount of electric power, diesel oil, thermal oil; 2, environmental pollution is quite large; And the utility model not only avoids the complicated processing process of above high pollution, high energy consumption completely, only petroleum pitch directly need be pulled to mixing building, namely warm mix SMA modified asphalt concrete modified particles of the present utility model and building stones mix be can be made into SMA modified asphalt concrete, mix temperature can reduce by 20 ~ 30 DEG C, fiber need not be added again, solve the high temperature resistance of SMA modified asphalt concrete, resistance to low temperature simultaneously, there is good economic benefit and social benefit, have wide range of applications, be beneficial to popularization.
The interpolation equipment of this kind of modified particles, comprises hopper, the transport unit be connected with described hopper discharge port, the automatic adding device be connected with described hopper feed mouth, the self-measuring device being arranged on described transport unit end and control device.Hopper top is provided with automatic adding device, among this kind of warm mix SMA modified asphalt concrete modified particles of the present utility model being added to matrix pitch in hopper and gathering materials, carry out mixing warm mix, modification is carried out to pitch, obtain warm mix SMA modified asphalt concrete.Then warm mix SMA modified asphalt concrete from the discharge port of hopper out, for road surface pavement, is also provided with the self-measuring device for measuring warm mix SMA modified asphalt concrete at the end of transport unit by the transport unit transmission being located at feed hopper bottom.Control device is then the normal work for controlling and ensure hopper, transport unit, automatic adding device and self-measuring device.
The interpolation equipment of a kind of warm mix SMA modified asphalt concrete modified particles of the present utility model and this kind of modified particles, the multiple additive with different modified function is rolled into the modified particles of multilayered structure, and add flexibly and easily in bituminous concrete to mix by interpolation equipment modification is carried out to it, may be used for the laying of High Grade Bitumen Pavement, not only get and replaced traditional SBS asphalt modification technology, solve the difficult problems such as the transport of SBS modifying asphalt, storage; Avoid and on-the-spot add the detrimentally affect that various properties-correcting agent causes time-consuming bothersome, seriously polluted, inefficiency, reduce investment simultaneously, pollute and energy consumption, and improve comprehensive pavement performance, the prolonging service life of pavement of bituminous pavement, reduce Road construction and maintenance cost, there is high economic worth and social benefit.
Summary of the invention
Technical problem to be solved in the utility model is exactly for complex process, high energy consumption, the high pollution of existing SMA asphalt concrete technique, the defect such as the storage time is short, operating efficiency is low, technical feature is low, provides a kind of warm mix SMA modified asphalt concrete modified particles.
Another object of the present utility model is to provide the interpolation equipment of this kind of modified particles, can directly throw in, automatic gauge, flexible and convenient to use, by the impact of the objective solid element such as geographical environment, weather condition, there is high economic and social benefit, with low cost but pavement performance is high.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of warm mix SMA modified asphalt concrete modified particles, comprise polymer modification layer and be wrapped in the rubber bisque outside described polymer modification layer, described polymer modification layer comprises diatomite layer, modification oxidant layer, layer of polyester fiber and ethylene-vinyl acetate copolymer layer from the inside to the outside successively.
Modified particles of the present utility model, the multiple additive with different modified function is rolled into the modified particles of multilayered structure, may be used for High Grade Bitumen Pavement construction, make in bituminous concrete preparation process, matrix pitch can mix rapidly with gathering materials, realize the comprehensive pavement performance of SMA bituminous concrete well, not only get and replaced traditional SBS asphalt modification technology, avoid and on-the-spot add the detrimentally affect that various properties-correcting agent causes time-consuming bothersome, seriously polluted, inefficiency.Wherein, rubber powder and diatomite are the commercially available rubber powder for asphalt modification and diatomite, and diatomite adds in rubber item, obviously can strengthen rigidity and the intensity of product, settling volume reaches 95%, and can improve heat-resisting, wear-resisting, the insulation of product, the performance of the chemical action such as anti-aging.Ethylene-vinyl acetate copolymer is also known as EVA resin, and molecular formula is C
6h
10o
2, molecular weight is 114.1424, as various film, foaming product, hot melt adhesive and polymer modifiers.Modified particles of the present utility model is black solid, density 1.0 ~ 1.43kg/m
3, fusing point 140 DEG C ~ 165 DEG C, temperature 165 DEG C ~ 175 DEG C in production process.
Preferably, described modification oxidant layer comprises warm mix oxidant layer, antistripping oxidant layer and paraffin layer from the inside to the outside successively.Paraffin selects fusing point to be the paraffin of 90 ~ 110 DEG C, vapors away when avoiding the paraffin of low melting point at later stage and matrix pitch and gather materials and mix warm mix.
Or preferred, described modification oxidant layer is mixed by warm-mixing agent, antistripping agent and paraffin.Compatible modification oxidant layer can be mixed to form by warm-mixing agent, antistripping agent and paraffin phase.
Warm-mixing agent is a kind of tensio-active agent, such as APTL type warm-mixing agent, and its molecule is made up of oleophilic group and hydrophilic group, and oleophilic group is assembled because polarity is close in aqueous, and hydrophilic group is dispersed in water, thus forms finely dispersed Surfactants in Aqueous Solutions.Compound mixes and stirs in process, and warm-mixing agent and pitch are synchronously sprayed into mix pot.Under mechanical force stirs, exhibiting high surface promoting agent micelle contacts with heated bitumen, and the peripheral water molecules of micelle evaporates rapidly lost, makes oleophilic group and Asphalt Contactor; And the residual water molecules do not scattered and not disappeared is combined with tensio-active agent hydrophilic group, thus wrapping the structural moisture film being formed between the pitch gathered materials and there is lubricating function in a large number; By the lubrication of structure moisture film, what not only increase compound mixes and stirs workability, also prevents asphalt mastic conglomeration to a certain extent.In the paving of compound, compacting process, structural moisture film plays lubrication, thus improves spreading speed and the easy compacting of compound, thus the cooling realizing compound is mixed and stirred, paved, compacting.Compacting ends, under the effect of mechanical mastication forces and environmental factors, water molecules scatters and disappears gradually, structure moisture film disappears, and surfactant can be transferred to rapidly pitch with on the interface that has a common boundary of gathering materials, surfactant, in alkalescence, has the effect being similar to asphalt anti-stripping agent, the adhesive property gathered materials with bituminous cements is strengthened.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
Fig. 1 is the cross-sectional structure schematic diagram of a kind of warm mix SMA modified asphalt concrete of the utility model modified particles embodiment 1;
Fig. 2 is the cross-sectional structure schematic diagram of the utility model embodiment 2;
Fig. 3 is the structural representation of the interpolation equipment of a kind of warm mix SMA modified asphalt concrete of the utility model modified particles.
Embodiment
As shown in Figure 1, for the preferred embodiment 1 of a kind of warm mix SMA modified asphalt concrete of the utility model modified particles, comprise polymer modification layer and be wrapped in the rubber bisque 5 outside described polymer modification layer, described polymer modification layer comprises diatomite layer 1, modification oxidant layer 2, layer of polyester fiber 3 and ethylene-vinyl acetate copolymer layer 4 from the inside to the outside successively.
Modified particles of the present utility model, the multiple additive with different modified function is rolled into the modified particles of multilayered structure, may be used for the site operation of road surfacing, make in bituminous concrete preparation process, matrix pitch can mix rapidly with gathering materials, realize the comprehensive pavement performance of SMA bituminous concrete well, not only get and replaced traditional SBS asphalt modification technology, avoid and on-the-spot add the detrimentally affect that various properties-correcting agent causes time-consuming bothersome, seriously polluted, inefficiency.Wherein, rubber powder and diatomite are the commercially available rubber powder for asphalt modification and diatomite, and diatomite adds in rubber item, obviously can strengthen rigidity and the intensity of product, settling volume reaches 95%, and can improve heat-resisting, wear-resisting, the insulation of product, the performance of the chemical action such as anti-aging.Ethylene-vinyl acetate copolymer is also known as EVA resin, and molecular formula is C
6h
10o
2, molecular weight is 114.1424, as various film, foaming product, hot melt adhesive and polymer modifiers.Modified particles of the present utility model is black solid, density 1.0 ~ 1.43kg/m
3, fusing point 140 DEG C ~ 165 DEG C, temperature 165 DEG C ~ 175 DEG C in production process.
Described modification oxidant layer 2 comprises warm mix oxidant layer 21, antistripping oxidant layer 22 and paraffin layer 23 from the inside to the outside successively.Paraffin selects fusing point to be the paraffin of 90 ~ 110 DEG C, vapors away when avoiding the paraffin of low melting point at later stage and matrix pitch and gather materials and mix warm mix.
This modified particles is right cylinder particle, and particle diameter is 8 ~ 13mm, and particle length is 15 ~ 30mm.The size design of modified particles can make it can melting fast in asphalt modification process, participates in reaction.
As shown in Figure 3, for the interpolation equipment of the utility model this kind of modified particles, comprise hopper 10, the transport unit 20 be connected with described hopper 10 discharge port, the automatic adding device 30 be connected with described hopper 10 opening for feed, the self-measuring device 40 being arranged on described transport unit 20 end and control device.Hopper 10 top is provided with automatic adding device 30, among this kind of warm mix SMA modified asphalt concrete modified particles of the present utility model being added to matrix pitch in hopper 10 and gathering materials, carry out mixing warm mix, modification is carried out to pitch, obtain warm mix SMA modified asphalt concrete.Then warm mix SMA modified asphalt concrete from the discharge port of hopper 10 out, transmitted by the transport unit 20 be located at bottom hopper 10 and for road surface pavement, be also provided with the self-measuring device 40 for measuring warm mix SMA modified asphalt concrete at the end of transport unit 20.Control device is then the normal work for controlling and ensure hopper 10, transport unit 20, automatic adding device 30 and self-measuring device 40.
As shown in Figure 2, be the preferred embodiment 2 of a kind of warm mix SMA modified asphalt concrete of the utility model modified particles, its structure and embodiment 1 basic simlarity, difference is: described modification oxidant layer 2 is mixed by warm-mixing agent, antistripping agent and paraffin.Compatible modification oxidant layer 2 can be mixed to form by warm-mixing agent, antistripping agent and paraffin phase.
The foregoing is only specific embodiment of the utility model, but technical characteristic of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and the change done or modification are all encompassed among the scope of the claims of the present utility model.
Claims (5)
1. a warm mix SMA modified asphalt concrete modified particles, it is characterized in that: comprise polymer modification layer and be wrapped in the rubber bisque (5) outside described polymer modification layer, described polymer modification layer comprises diatomite layer (1), modification oxidant layer (2), layer of polyester fiber (3) and ethylene-vinyl acetate copolymer layer (4) from the inside to the outside successively.
2. a kind of warm mix SMA modified asphalt concrete modified particles according to claim 1, is characterized in that: described modification oxidant layer (2) comprises warm mix oxidant layer (21), antistripping oxidant layer (22) and paraffin layer (23) from the inside to the outside successively.
3. a kind of warm mix SMA modified asphalt concrete modified particles according to claim 1, is characterized in that: described modification oxidant layer (2) is mixed by warm-mixing agent, antistripping agent and paraffin.
4. a kind of warm mix SMA modified asphalt concrete modified particles according to claim 1, it is characterized in that: this modified particles is right cylinder particle, particle diameter is 8 ~ 13mm, and particle length is 15 ~ 30mm.
5. the interpolation equipment of a warm mix SMA modified asphalt concrete modified particles, for adding the warm mix SMA modified asphalt concrete modified particles described in Claims 1-4 any one, the transport unit (20) comprise hopper (10), being connected with described hopper (10) discharge port, is characterized in that: also comprise the automatic adding device (30) be connected with described hopper (10) opening for feed, the self-measuring device (40) being arranged on described transport unit (20) end and control device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520028957.7U CN204529670U (en) | 2015-01-15 | 2015-01-15 | A kind of warm mix SMA modified asphalt concrete modified particles and interpolation equipment thereof |
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| CN201520028957.7U CN204529670U (en) | 2015-01-15 | 2015-01-15 | A kind of warm mix SMA modified asphalt concrete modified particles and interpolation equipment thereof |
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| CN204529670U true CN204529670U (en) | 2015-08-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115785686A (en) * | 2022-12-21 | 2023-03-14 | 中路交科科技股份有限公司 | Composite multi-effect high-modulus tackifying modifier and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115785686A (en) * | 2022-12-21 | 2023-03-14 | 中路交科科技股份有限公司 | Composite multi-effect high-modulus tackifying modifier and preparation method thereof |
| CN115785686B (en) * | 2022-12-21 | 2024-02-20 | 中路交科科技股份有限公司 | Composite multi-effect high-modulus tackifying modifier and preparation method thereof |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20160115 |
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| EXPY | Termination of patent right or utility model |