CN101774786A - Slag asphalt concrete pavement material composition for microwave heating - Google Patents
Slag asphalt concrete pavement material composition for microwave heating Download PDFInfo
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- CN101774786A CN101774786A CN200910254549A CN200910254549A CN101774786A CN 101774786 A CN101774786 A CN 101774786A CN 200910254549 A CN200910254549 A CN 200910254549A CN 200910254549 A CN200910254549 A CN 200910254549A CN 101774786 A CN101774786 A CN 101774786A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a slag road asphalt concrete pavement material composition suitable for microwave heating. In the preparation process of road asphalt concrete, magnetic powder is added and is used for fully or partially replacing the lime stone powdered ore in the traditional asphalt concrete raw material, magnetic metallurgical slag is used for replacing the natural coarse aggregate in the traditional asphalt concrete raw material, and thus the finally obtained composition comprises magnetic powder, lime stone powdered ore, asphalt, magnetic metallurgical slag and natural coarse aggregate. Compared with the traditional asphalt concrete for microwave heating, the slag asphalt concrete of the invention improves the heating rate by several times to dozens of times, has lower cost, can greatly improve ice removing and snow melting efficiency by microwaves, and is widely applied to various asphalt concrete highway pavements, airports, factories, offices, schools, armies and other organizations.
Description
Technical field
The present invention relates to pavement of road material field, be specifically related to a kind of slag road asphalt concrete pavement material composition that is applicable to microwave heating.
Background technology
As everyone knows, winter road deicing for Road transport safety, ensure that traffic is unobstructed significant.Microwave heating is a kind of modern technique of road deicing, has carried out big quantity research both at home and abroad.The regeneration of microwave heating asphalt concrete road surface, maintenance for save the Road construction cost, prolong pavement material work-ing life, energy-conserving and environment-protective are significant equally.
Yet in the process of microwave heating asphalt concrete road surface, obviously there is the inefficient problem of microwave heating, seriously limited the application of microwave heating technique in the ground surface material field.Tracing it to its cause is that the electromagnetic parameter of asphalt concrete material own is unreasonable, causes road surface microwave absorbing rate low, and the microwave heating degree of depth is big, the road surface heat-up rate waits a series of slowly, in bituminous concrete, add artificial microwave absorption, because the cost height has limited it and promoted the use of on a large scale.
Summary of the invention
The purpose of this invention is to provide the microwave heating speed that a kind of cost is low, can increase substantially asphalt pavement material, be used for deicing, snow melting, the construction of renewable asphalt pavement material, bituminous pavement rapid curing aspect a kind of slag asphalt concrete pavement material composition that is used for microwave heating
In order to overcome the deficiencies in the prior art, technical scheme of the present invention is to solve like this: by in road bitumen concrete preparation process, add the limestone dust that the magnetic powder is used for all or part of alternative traditional asphalt concrete material, the metallurgical slag of employing magnetic partly replaces the natural coarse aggregate in the traditional asphalt concrete material, in order to improve and to adjust the electromagnetic parameter of asphalt concrete pavement material;
The slag asphalt concrete composition of described microwave heating is made up of magnetic powder, limestone dust, pitch, the metallurgical slag of magnetic, natural coarse aggregate, and described magnetic powder and limestone dust weight sum account for the 5-15% of bituminous concrete composition total weight; Described pitch weight accounts for the 3-7% of bituminous concrete composition total weight; Metallurgical slag of described magnetic and natural coarse aggregate weight sum account for the 79-92% of bituminous concrete composition total weight.Wherein, to account for the ratio of limestone dust and magnetic grain weight amount sum be 0-100% to the magnetic powder; The ratio that the metallurgical slag of magnetic accounts for natural coarse aggregate and the metallurgical slag weight of magnetic sum is 10-70%.
Described magnetic powder is ferrite powder or metal iron powder, magnetic powder particles diameter is less than 75 microns, described ferrite powder is artificial synthesizing magnetic ferrite powder or spontaneous magnetism powdered iron ore, contain the Z 250 weight ratio in the ferrite powder greater than 40%, described metal iron powder is plain metal iron powder or carbonyl iron dust, and the iron level weight ratio is greater than 80% in the metal iron powder.
The metallurgical slag of described magnetic is magnetic pyrometallurgy slags such as slag, copper ashes or nickel slag, the metallurgical scoriaceous particle diameter of described magnetic is 75 microns～13.2 millimeters, Fe, Ni, the Co magneticmetal element weight content in the metallurgical slag of magnetic needs greater than 20%, or Fe, Ni, the weight content of Co magnetic metal oxide in the metallurgical slag of magnetic need greater than 30%.
Described slag asphalt concrete composition is under the microwave frequency of 0.9-6GHz scope, and 25 ℃ of room temperatures, the compacted depth of composition is during greater than 5 millimeters, and its microwave reflection rate is lower than-2dB.
The present invention compared with prior art has the following advantages:
1), road bitumen concrete microwave heating material of the present invention can adopt traditional bituminous concrete preparation technology and equipment to obtain, preparation technology is simple;
2), the asphalt concrete pavement material that is used for microwave heating of the present invention improves several times to tens times than the concrete microwave heating temperature rise rate of traditional asphalt.It is big that the microwave asphalt concrete material that obtains can effectively overcome in the microwave heating process of traditional asphalt concrete road surface the microwave heating degree of depth, heat utilization ratio is low, surface temperature rise waits problem slowly, can increase substantially microwave deicing, snow melting efficient, is convenient to the microwave maintenance of surface;
3), the present invention adopts the magnetic slag to replace the coarse aggregate in the traditional asphalt concrete to prepare the microwave heating concrete pavement material, not only open up new approach, and can obviously reduce functional ground surface material cost for scoriaceous comprehensive utilization.
Embodiment
Below by embodiment, summary of the invention is further described in detail.
By in road bitumen concrete preparation process, add the limestone dust that the magnetic powder is used for all or part of alternative traditional asphalt concrete material, the metallurgical slag of employing magnetic partly replaces the natural coarse aggregate in the traditional asphalt concrete material, in order to improve and to adjust the electromagnetic parameter of asphalt concrete pavement material;
The slag asphalt concrete composition of described microwave heating is made up of magnetic powder, limestone dust, pitch, the metallurgical slag of magnetic, natural coarse aggregate, and described magnetic powder and limestone dust weight sum account for the 5-15% of bituminous concrete composition total weight; Described pitch weight accounts for the 3-7% of bituminous concrete composition total weight; Metallurgical slag of described magnetic and natural coarse aggregate weight sum account for the 79-92% of bituminous concrete composition total weight.Wherein, to account for the ratio of limestone dust and magnetic grain weight amount sum be 0-100% to the magnetic powder; The ratio that the metallurgical slag of magnetic accounts for natural coarse aggregate and the metallurgical slag weight of magnetic sum is 10-70%.
Described magnetic powder is ferrite powder or metal iron powder, magnetic powder particles diameter is less than 75 microns, described ferrite powder is artificial synthesizing magnetic ferrite powder or spontaneous magnetism powdered iron ore, containing the Z 250 weight ratio in the ferrite powder should be greater than 40%, described metal iron powder is plain metal iron powder or carbonyl iron dust, and the iron level weight ratio is greater than 80% in the metal iron powder.
The metallurgical slag of described magnetic is magnetic pyrometallurgy slags such as slag, copper ashes or nickel slag.The metallurgical scoriaceous particle diameter of described magnetic is 75 microns～13.2 millimeters, the weight content of magnetic metallic elements such as Fe, Ni, Co in the metallurgical slag of magnetic needs greater than 20%, or the weight content of magnetic metal oxides such as Fe, Ni, Co in the metallurgical slag of magnetic needs greater than 30%.
Described slag asphalt concrete composition is under the microwave frequency of 0.9-6GHz scope, and 25 ℃ of room temperatures, the compacted depth of composition is during greater than 5 millimeters, and its microwave reflection rate is lower than-2dB.
Embodiment 1
Selecting road for use is consolidating material with shell 90# pitch, coarse aggregate is limestone gravel and block slag, fine aggregate adopts magnetite powder and limestone dust, the slag asphalt concrete proportioning is: magnetite powder 10 grams, limestone dust 5 grams, pitch 10 grams, particle diameter is the 0.075-2.36 millimeter, block slag coarse aggregate 58 grams of FeO content 35%, particle diameter is 0.075-4.75 millimeter limestone gravel coarse aggregate 80 grams, in temperature is 155 ℃ ± 5 ℃ following uniform mixings, compression moulding under 20Mpa pressure obtains 50 millimeters of diameters, highly is 26 millimeters cylindrical sample.Heating is 40 seconds under the microwave frequency 0.5kw of 2.45GHz output rating condition, and temperature has risen 50 ℃, and does not add scoriaceous traditional asphalt concrete, heats the same time, and temperature rises less than 3 ℃.Under the microwave frequency of 0.9-6GHz, record this slag asphalt concrete material reflection of electromagnetic wave rate and be-3.4dB.
Embodiment 2
Selecting road for use is consolidating material with shell 70# pitch, coarse aggregate is limestone gravel and block slag, fine aggregate adopts limestone dust, the slag concrete proportioning is: limestone dust 12 grams, pitch 10 grams, particle diameter is block slag coarse aggregate 33 grams of 2.36-4.75 millimeter, FeO content 35%, particle diameter is 0.075-4.75 millimeter limestone gravel coarse aggregate 82 grams, in temperature is 155 ℃ ± 5 ℃ following uniform mixings, compression moulding under 20Mpa pressure, obtaining 50 millimeters of diameters, highly is 26 millimeters cylindrical sample.Heating is 40 seconds under the microwave frequency 0.5kw of 2.45GHz output rating condition, and temperature has risen 35 ℃, and does not add scoriaceous bituminous concrete, heats the same time, and temperature rises less than 3 ℃.Under the microwave frequency of 0.9-6GHz, record this slag asphalt concrete material reflection of electromagnetic wave rate and be-3.1dB.
Embodiment 3
Selecting road for use is consolidating material with shell 70# pitch, coarse aggregate is limestone gravel and block copper ashes, fine aggregate adopts magnetite powder, the slag concrete proportioning is: magnetite powder 19 grams, pitch 10 grams, particle diameter is 0.075-2.36 millimeter, FeO content 43% block copper ashes coarse aggregate 18 grams, particle diameter is 0.075-4.75 millimeter limestone gravel coarse aggregate 98 grams, in temperature is 155 ℃ ± 5 ℃ following uniform mixings, compression moulding under 20Mpa pressure, obtaining 50 millimeters of diameters, highly is 26 millimeters cylindrical sample.Heating is 40 seconds under the microwave frequency 0.5kw of 2.45GHz output rating condition, and temperature has risen 30 ℃, and does not add scoriaceous bituminous concrete, heats the same time, and temperature rises less than 3 ℃.Under the microwave frequency of 0.9-6GHz, record this slag asphalt concrete material hertzian wave average reflectance and be-2.4dB.
Embodiment 4
Selecting road for use is consolidating material with shell 70# pitch, coarse aggregate is limestone gravel and block copper ashes, fine aggregate adopts magnetite powder and limestone dust, the slag concrete proportioning is: magnetite powder 10 grams, limestone dust 5 grams, pitch 10 grams, particle diameter is 0.075-2.36 millimeter, FeO content 43% block copper ashes coarse aggregate 30 grams, particle diameter is 0.075-4.75 millimeter limestone gravel coarse aggregate 108 grams, in temperature is 155 ℃ ± 5 ℃ following uniform mixings, compression moulding under 20Mpa pressure obtains 50 millimeters of diameters, highly is 26 millimeters cylindrical sample.Heating is 40 seconds under the microwave frequency 0.5kw of 2.45GHz output rating condition, and temperature has risen 37 ℃, and does not add scoriaceous bituminous concrete, heats the same time, and temperature rises less than 3 ℃.Under the microwave frequency of 0.9-6GHz, record this slag asphalt concrete material hertzian wave average reflectance and be-2.3dB.
Embodiment 5
Selecting road for use is consolidating material with shell 70# pitch, coarse aggregate is limestone gravel and block slag, fine aggregate adopts limestone dust, the slag concrete proportioning is: limestone dust 12 grams, pitch 11 grams, particle diameter is 4.75-11 millimeter, FeO content 40% block slag coarse aggregate 60 grams, particle diameter is 0.075-4.75 millimeter limestone gravel coarse aggregate 78 grams, in temperature is 155 ℃ ± 5 ℃ following uniform mixings, compression moulding under 20Mpa pressure, obtaining 50 millimeters of diameters, highly is 26 millimeters cylindrical sample.Heating is 40 seconds under the microwave frequency 0.5kw of 2.45GHz output rating condition, and temperature has risen 47 ℃, and does not add scoriaceous bituminous concrete, heats the same time, and temperature rises less than 3 ℃.Under the microwave frequency of 0.9-6GHz, record this slag asphalt concrete material hertzian wave average reflectance and be-3.7dB.
Embodiment 6
Selecting road for use is consolidating material with shell 70# pitch, coarse aggregate is limestone gravel and bulk nickel slag, fine aggregate adopts magnetite powder, the slag concrete proportioning is: magnetite powder 19 grams, pitch 11 grams, particle diameter is 0.075-2.36 millimeter, FeO content 40% bulk nickel slag coarse aggregate 60 grams, particle diameter is 0.075-4.75 millimeter limestone gravel coarse aggregate 78 grams, in temperature is under 155 ℃ 155 ± 5 ℃, uniform mixing, compression moulding under 20Mpa pressure obtains 50 millimeters of diameters, highly is 26 millimeters cylindrical sample.Heating is 40 seconds under the microwave frequency 0.5kw of 2.45GHz output rating condition, and temperature has risen 46 ℃, and does not add scoriaceous bituminous concrete, heats the same time, and temperature rises less than 3 ℃.Under the microwave frequency of 0.9-6GHz, record this slag asphalt concrete material hertzian wave average reflectance and be-3.3dB.
Embodiment 7
Selecting road for use is consolidating material with shell 70# pitch, coarse aggregate is limestone gravel and block copper ashes, fine aggregate adopts carbonyl iron dust, the slag concrete proportioning is: carbonyl iron dust 19 grams, pitch 11 grams, particle diameter is 0.075-2.36 millimeter, FeO content 35% block copper ashes coarse aggregate 87 grams, particle diameter is 0.075-4.75 millimeter limestone gravel coarse aggregate 60 grams, in temperature is 155 ℃ ± 5 ℃ following uniform mixings, compression moulding under 20Mpa pressure, obtaining 50 millimeters of diameters, highly is 26 millimeters cylindrical sample.Heating is 40 seconds under the microwave frequency 0.5kw of 2.45GHz output rating condition, and temperature has risen 61 ℃, and does not add scoriaceous bituminous concrete, heats the same time, and temperature rises less than 3 ℃.Under the microwave frequency of 0.9-6GHz, record this slag asphalt concrete material hertzian wave average reflectance and be-4.3dB.
Embodiment 8
Selecting road for use is consolidating material with shell 70# pitch, coarse aggregate is limestone gravel and bulk nickel slag, fine aggregate adopts limestone dust, the slag concrete proportioning is: limestone dust 12 grams, pitch 10.5 grams, particle diameter is 0.075-2.36 millimeter, FeO content 35% bulk nickel slag coarse aggregate 40 grams, particle diameter is 0.075-4.75 millimeter limestone gravel coarse aggregate 107 grams, in temperature is 155 ℃ ± 5 ℃ following uniform mixings, compression moulding under 20Mpa pressure, obtaining 50 millimeters of diameters, highly is 26 millimeters cylindrical sample.Heating is 40 seconds under the microwave frequency 0.5kw of 2.45GHz output rating condition, and temperature has risen 55 ℃, and does not add scoriaceous bituminous concrete, heats the same time, and temperature rises less than 3 ℃.Under the microwave frequency of 0.9-6GHz, record this slag asphalt concrete material hertzian wave average reflectance and be-4.0dB.
Claims (4)
1. slag asphalt concrete pavement material composition that is used for microwave heating, it is characterized in that by in road bitumen concrete preparation process, add the limestone dust that the magnetic powder is used for all or part of alternative traditional asphalt concrete material, the metallurgical slag of employing magnetic partly replaces the natural coarse aggregate in the traditional asphalt concrete material, in order to improve and to adjust the electromagnetic parameter of asphalt concrete pavement material;
The slag asphalt concrete composition of described microwave heating is made up of magnetic powder, limestone dust, pitch, the metallurgical slag of magnetic, natural coarse aggregate, and described magnetic powder and limestone dust weight sum account for the 5-15% of bituminous concrete composition total weight; Described pitch weight accounts for the 3-7% of bituminous concrete composition total weight; Metallurgical slag of described magnetic and natural coarse aggregate weight sum account for the 79-92% of bituminous concrete composition total weight.Wherein, to account for the ratio of limestone dust and magnetic grain weight amount sum be 0-100% to the magnetic powder; The ratio that the metallurgical slag of magnetic accounts for natural coarse aggregate and the metallurgical slag weight of magnetic sum is 10-70%.
2. a kind of slag asphalt concrete pavement material composition that is used for microwave heating according to claim 1 is characterized in that described magnetic powder is ferrite powder or metal iron powder, and magnetic powder particles diameter is less than 75 microns.Described ferrite powder is artificial synthesizing magnetic ferrite powder or spontaneous magnetism powdered iron ore, contains the Z 250 weight ratio in the ferrite powder greater than 40%; Described metal iron powder is plain metal iron powder or carbonyl iron dust, and the iron level weight ratio is greater than 80% in the metal iron powder.
3. a kind of slag asphalt concrete pavement material composition that is used for microwave heating according to claim 1, it is characterized in that the metallurgical slag of described magnetic is the magnetic pyrometallurgy slag of slag, copper ashes or nickel slag, the metallurgical scoriaceous particle diameter of described magnetic is 75 microns～13.2 millimeters, Fe, Ni, the Co magneticmetal element weight content in the metallurgical slag of magnetic needs greater than 20%, or Fe, Ni, the weight content of Co magnetic metal oxide in the metallurgical slag of magnetic need greater than 30%.
4. according to the described a kind of slag asphalt concrete pavement material composition that is used for microwave heating of claim 1-3, it is characterized in that under the microwave frequency effect of described composition in the 0.9-6GHz scope, room temperature is 25 ℃, the compacted depth of composition is during greater than 5 millimeters, and its microwave reflection rate is lower than-2dB.
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| CN103496888A (en) * | 2013-10-26 | 2014-01-08 | 长安大学 | Modified asphalt concrete capable of reducing temperature of road surface |
| CN104478368A (en) * | 2014-12-29 | 2015-04-01 | 扬州大学 | Wear-resisting concrete doped with nickel slags |
| CN106082740A (en) * | 2016-06-13 | 2016-11-09 | 东南大学 | A kind of asphalt pavement material that microwave heating can be used quickly to repair |
| CN106082876A (en) * | 2016-06-27 | 2016-11-09 | 黑龙江工程学院 | Be suitable to concrete and the Copper Slag application in terms of concrete of microwave ice removing |
| CN106277941A (en) * | 2016-08-23 | 2017-01-04 | 张要军 | A kind of high-environmental road asphalt compound and construction method thereof |
| CN106316222A (en) * | 2016-08-23 | 2017-01-11 | 张要军 | Wear-resistant heat-resistant asphalt concrete and construction method thereof |
| CN107033613A (en) * | 2017-04-14 | 2017-08-11 | 长安大学 | A kind of modified pitch |
| CN107190606A (en) * | 2017-06-19 | 2017-09-22 | 东南大学 | A kind of multifunction road cover structure heated beneficial to microwave |
| CN110981312A (en) * | 2019-12-25 | 2020-04-10 | 长安大学 | Wave-absorbing asphalt concrete for removing ice and snow and preparation method thereof |
| CN111777360A (en) * | 2020-06-15 | 2020-10-16 | 同济大学 | Ferrite asphalt mixture with microwave snow melting function and preparation method and application thereof |
| CN112194984A (en) * | 2020-10-10 | 2021-01-08 | 重庆大学 | Microwave deicing road surface functional coating and manufacturing method thereof |
| CN113072325A (en) * | 2021-03-24 | 2021-07-06 | 山东高速集团有限公司 | Microwave high-sensitivity asphalt mixture and preparation method and application thereof |
| WO2022130079A1 (en) | 2020-12-15 | 2022-06-23 | FUTTEC a.s. | Method of repairing bitumen surfaces and device for carrying out this method |
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| CN101445338B (en) * | 2008-11-27 | 2011-12-14 | 武汉理工大学 | Method for producing wet-mixing, skid-resistance and noise-reduction asphalt road surface material |
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- 2009-12-28 CN CN2009102545492A patent/CN101774786B/en not_active Expired - Fee Related
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| CN103496888B (en) * | 2013-10-26 | 2015-06-10 | 长安大学 | Modified asphalt concrete capable of reducing temperature of road surface |
| CN103496888A (en) * | 2013-10-26 | 2014-01-08 | 长安大学 | Modified asphalt concrete capable of reducing temperature of road surface |
| CN104478368A (en) * | 2014-12-29 | 2015-04-01 | 扬州大学 | Wear-resisting concrete doped with nickel slags |
| CN104478368B (en) * | 2014-12-29 | 2016-06-29 | 扬州大学 | A kind of abrasion-proof concrete mixing nickel slag |
| CN106082740A (en) * | 2016-06-13 | 2016-11-09 | 东南大学 | A kind of asphalt pavement material that microwave heating can be used quickly to repair |
| CN106082740B (en) * | 2016-06-13 | 2018-12-28 | 东南大学 | A kind of asphalt pavement material that can be quickly repaired using microwave heating |
| CN106082876A (en) * | 2016-06-27 | 2016-11-09 | 黑龙江工程学院 | Be suitable to concrete and the Copper Slag application in terms of concrete of microwave ice removing |
| CN106277941B (en) * | 2016-08-23 | 2018-06-12 | 张要军 | A kind of high-environmental road asphalt mixture and its construction method |
| CN106277941A (en) * | 2016-08-23 | 2017-01-04 | 张要军 | A kind of high-environmental road asphalt compound and construction method thereof |
| CN106316222A (en) * | 2016-08-23 | 2017-01-11 | 张要军 | Wear-resistant heat-resistant asphalt concrete and construction method thereof |
| CN107033613A (en) * | 2017-04-14 | 2017-08-11 | 长安大学 | A kind of modified pitch |
| CN107190606A (en) * | 2017-06-19 | 2017-09-22 | 东南大学 | A kind of multifunction road cover structure heated beneficial to microwave |
| CN110981312A (en) * | 2019-12-25 | 2020-04-10 | 长安大学 | Wave-absorbing asphalt concrete for removing ice and snow and preparation method thereof |
| CN111777360A (en) * | 2020-06-15 | 2020-10-16 | 同济大学 | Ferrite asphalt mixture with microwave snow melting function and preparation method and application thereof |
| CN112194984A (en) * | 2020-10-10 | 2021-01-08 | 重庆大学 | Microwave deicing road surface functional coating and manufacturing method thereof |
| WO2022130079A1 (en) | 2020-12-15 | 2022-06-23 | FUTTEC a.s. | Method of repairing bitumen surfaces and device for carrying out this method |
| CN113072325A (en) * | 2021-03-24 | 2021-07-06 | 山东高速集团有限公司 | Microwave high-sensitivity asphalt mixture and preparation method and application thereof |
| CN115491176A (en) * | 2022-10-27 | 2022-12-20 | 武汉理工大学 | Induction heating renaturation self-healing asphalt pouring sealant and preparation method thereof |
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