CN104261728A - Long-acting environment-friendly self-ice-melting asphalt mixture and preparation method thereof - Google Patents
Long-acting environment-friendly self-ice-melting asphalt mixture and preparation method thereof Download PDFInfo
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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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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention relates to a long-acting environment-friendly self-ice-melting asphalt mixture and a preparation method thereof. The long-acting environment-friendly self-ice-melting asphalt mixture is prepared from the following components in parts by weight: 87-94 parts of aggregate, 2-6 parts of ice melting agent, 0-4 parts of ore powder and 4-7 parts of SBS (styrene-butadiene-styrene) modified asphalt. The ice melting agent is chlorine-ion magnesium-aluminum-base bis hydroxide, wherein the chlorine-ion magnesium-aluminum-base bis hydroxide is prepared from magnesium-aluminum-base bis hydroxide, sodium chloride and water in a mass ratio of 3:3:4. The asphalt pavement prepared from the self-ice-melting asphalt mixture has the self-ice-melting function; the ice melting performance is not influenced by molten snow water or rain water; and the asphalt mixture is effective for a long time, and is harmless to the environment.
Description
Technical field
The present invention relates to a kind of long-acting environment friendly from ice-melt asphalt and preparation method thereof.
Background technology
Bituminous pavement has driving steadily comfortable, the advantage such as noise is low, maintenance is convenient, is at home and abroad used widely in road construction.But, in the winter time, when icing phenomenon appears in bituminous pavement, car skidding, brake failure, direction out of control will be caused, very easily cause traffic accident, have a strong impact on traffic safety.For eliminating the impact of ice and snow road pavement traffic, the most frequently used method is in the agent of accumulated snow ice-patch surface spreading chloride salt deicing or snow melting.But due to chloride salt deicing or snow melting agent institute chloride ion-containing, not only the water quality of road pavement periphery, soil and vegetation can produce destruction, and pitch can be made to reduce with the adhesivity of gathering materials, and serious corrosion failure is produced to the reinforcing bar in bridge water cement concrete, cause the weather resistance of bituminous pavement and bridge greatly to reduce.
In order to reduce the villaumite deicing or snow melting agent of spreading to the impact of bituminous pavement, bridge and environment, obtain increasing application from ice-melt asphalt.So-called is that asphalt is mixed in the agent of chloride salt deicing or snow melting from ice-melt asphalt, with the bituminous pavement of its making, when sleety weather is subject to vehicular load squeezing action, chloride salt ice-melt becomes branch never to move to road deck with the bituminous road layer of the degree of depth, thus realizes deicing or snow melting.But, from bituminous concrete, the chlorion of slow releasing still can to environmental effects, and produce bituminous pavement and bridge water cement concrete and destroy, and along with the minimizing of chloride salt deicing or snow melting agent in bituminous concrete, its deicing or snow melting performance also weakens gradually.Research shows, after the bituminous concrete of admixture 5% chloride salt deicing or snow melting agent soaks 6 hours in water, its surperficial apparent freezing point is increased to-3 DEG C from-5.8 DEG C.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, object be to provide a kind of long-acting environment friendly from ice-melt asphalt and preparation method thereof.This asphalt has from ice-melt function, and its ice-melt performance is not by melting snow-broth or rain water mitigation, can keep effectively permanent, and be safe from harm to environment.
To achieve these goals, technical scheme of the present invention is:
Long-acting environment friendly from an ice-melt asphalt, it by gathering materials, ice melting agent, breeze, SBS modifying asphalt form; Each component is counted by weight: gather materials 87 ~ 94 parts, ice melting agent 2 ~ 6 parts, breeze 0 ~ 4 part, SBS modifying asphalt 4 ~ 7 parts, described ice melting agent is chlorion type magnesium-aluminum-based laminar double hydroxide, and described chlorion type magnesium-aluminum-based laminar double hydroxide is prepared from according to the ratio that mass ratio is 3:3:4 by magnesium-aluminum-based laminar double hydroxide, sodium-chlor and water.
In such scheme, the preparation method of described chlorion type magnesium-aluminum-based laminar double hydroxide is: 30 parts of magnesium-aluminum-based laminar double hydroxides are placed in the retort furnace roasting 2 hours that temperature is 500 DEG C, then it is put into vacuum drier rapidly, after vacuumizing, be cooled to room temperature; 30 parts of sodium-chlor and 40 parts of water are mixed in there-necked flask; and be heated to 70 DEG C; roasting is taken out and cooled magnesium-aluminum-based laminar double hydroxide from moisture eliminator; join rapidly in there-necked flask; stir 30min under nitrogen protection; take out mixture deionized water wash to filter; until the filtrate after washing and filtering checks not chloride ion-containing with silver nitrate solution; then by filter cake in the baking oven of 110 DEG C dry 24 hours; take out drying solid to pulverize in high speed disintegrator; after grinding, cross 200 mesh sieves again, obtain chlorion type magnesium-aluminum-based laminar double hydroxide.
In such scheme, described gathers materials for basalt, hard, coarse, wear-resisting, clean, and its properties meets thick, the fine aggregate specification of quality of " standard specification for construction and acceptance of highway asphalt pavement " (GTJ F 40-2004) Asphalt Mixture.
In such scheme, described breeze is limestone powder, and the percent of pass of 200 mesh sieves is greater than 75%.
In such scheme, the penetration degree of described SBS modifying asphalt 25 DEG C is 30 ~ 60dmm, and the ductility of 5 DEG C is greater than 30cm, and softening temperature is between 60 ~ 75 DEG C.
Above-mentioned long-acting environment friendly, from the preparation method of ice-melt asphalt, carries out in accordance with the following steps:
(1) by the parts by weight of each component be: gather materials 87 ~ 94 parts, ice melting agent 2 ~ 6 parts, breeze 0 ~ 4 part, SBS modifying asphalt 4 ~ 7 parts, choose gather materials, ice melting agent, SBS modifying asphalt, breeze, described ice melting agent is chlorion type magnesium-aluminum-based laminar double hydroxide;
(2) the baking oven preheating 3 hours that temperature is 170 ~ 190 DEG C is put into by gathering materials;
(3) SBS modifying asphalt is heated to 150 ~ 160 DEG C, joining temperature is set as in the asphalt amalgamator of 175 DEG C, then the aggregate blending 90 ~ 120s after above-mentioned preheating is added, finally breeze and chlorion type magnesium-aluminum-based laminar double hydroxide are joined in compound and continue mix 50 ~ 70s, obtain from ice-melt asphalt.
In the present invention, described magnesium-aluminum-based laminar double hydroxide is that method prepares disclosed in patent CN 102174269A.The chemical constitution of magnesium-aluminum-based laminar double hydroxide is: Mg
0.67al
0.33(OH)
2(CO
3)
0.170.6H
2o.Therefore, magnesium-aluminum-based laminar double hydroxide of the present invention is carbonate form magnesium-aluminum-based laminar double hydroxide, by carrying out roasting to carbonate form magnesium-aluminum-based laminar double hydroxide, its interlayer anion carbonate is removed, then the magnesium-aluminum-based laminar double hydroxide after roasting is mixed with aqueous sodium chloride liquid phase, utilize " the memory structures effect " of magnesium-aluminum-based laminar double hydroxide, chlorion is introduced the interlayer of magnesium-aluminum-based laminar double hydroxide, prepare chlorion type magnesium-aluminum-based laminar double hydroxide.
Beneficial effect of the present invention:
(1) the chlorion type magnesium-aluminum-based laminar double hydroxide prepared by the present invention has the effect of the apparent freezing point reducing water, and the structure of magnesium-aluminum-based laminar double hydroxide is to the chlorion Galois field effect of interlayer simultaneously, and interlayer chlorion therefore can be avoided to run off;
(2) bituminous pavement of the asphalt institute making utilizing chlorion type magnesium-aluminum-based laminar double hydroxide to prepare, can have from ice-melt function, chlorion can not be discharged under the souring of rainwater or snow-broth, environment is not had an impact, to bituminous pavement and the corrosion-free destruction of bridge water cement concrete, ice-melt performance in road surface can keep permanently effective.
Embodiment
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.
The ice melting agent adopted in following examples is chlorion type magnesium-aluminum-based laminar double hydroxide, described chlorion type magnesium-aluminum-based laminar double hydroxide prepares by the following method: 30 parts of magnesium-aluminum-based laminar double hydroxides are placed in the retort furnace roasting 2 hours that temperature is 500 DEG C, then it is put into vacuum drier rapidly, after vacuumizing, be cooled to room temperature; 30 parts of sodium-chlor and 40 parts of water are mixed in there-necked flask; and be heated to 70 DEG C; the magnesium-aluminum-based laminar double hydroxide after roasting is taken out from moisture eliminator; join rapidly in there-necked flask; stir 30min under nitrogen protection; take out mixture deionized water wash to filter; until the filtrate after washing and filtering checks not chloride ion-containing with silver nitrate solution; then by filter cake in the baking oven of 110 DEG C dry 24 hours; take out drying solid to pulverize in high speed disintegrator; after grinding, cross 200 mesh sieves again, obtain chlorion type magnesium-aluminum-based laminar double hydroxide.
Described magnesium-aluminum-based laminar double hydroxide is that method prepares disclosed in patent CN 102174269 A.The chemical constitution of magnesium-aluminum-based laminar double hydroxide is: Mg
0.67al
0.33(OH)
2(CO
3)
0.170.6H
2o.
Embodiment 1:
Take 89.5 parts of (weight parts, lower same) (grating is as shown in table 1 for basalt aggregate, lower with) to put into temperature be the dry and preheating of the baking oven of 180 DEG C 3 hours, then by 4.5 parts of SBS modifying asphalts, (25 DEG C of penetration degrees are 38dmm, the ductility of 5 DEG C is 35.2cm, softening temperature is 70.5 DEG C) be heated to 160 DEG C, be hot mix 90s in the asphalt amalgamator of 175 DEG C with gathering materials in temperature; Add 5 parts of ice melting agents (chlorion type magnesium-aluminum-based laminar double hydroxide) again, 1 part of limestone dust (percent of pass of 200 mesh sieves is 90.6%) continues mix 60s, namely obtained from ice-melt asphalt.Test shows: be-5.2 DEG C with this from the bituminous concrete surface apparent freezing point that the compacting of ice-melt asphalt obtains, it soaked in water its surperficial apparent freezing point after 6 hours and be still-5.2 DEG C, separate out with in silver nitrate solution inspection soak solution without chlorion.
Table 1 basalt aggregate grating
Embodiment 2:
Taking 90 parts of basalt aggregate, to put into temperature be the dry and preheating of the baking oven of 175 DEG C 3 hours, then by 4 parts of SBS modifying asphalts, (25 DEG C of penetration degrees are 45dmm, the ductility of 5 DEG C is 36.4cm, softening temperature is 68.7 DEG C) be heated to 158 DEG C, be hot mix 100s in the asphalt amalgamator of 175 DEG C with gathering materials in temperature, add 6 parts of ice melting agents (chlorion type magnesium-aluminum-based laminar double hydroxide) and continue mix 55s, namely obtained from ice-melt asphalt.Test shows: be-6.3 DEG C with this from the bituminous concrete surface apparent freezing point that the compacting of ice-melt asphalt obtains, and is soaked its surperficial apparent freezing point after 6 hours and, still for-6.3 DEG C, separates out with in silver nitrate solution inspection soak solution without chlorion.
Embodiment 3:
Taking 90.7 parts of basalt aggregate, to put into temperature be the dry and preheating of the baking oven of 185 DEG C 3 hours, then by 4.3 parts of SBS modifying asphalts, (25 DEG C of penetration degrees are 48dmm, the ductility of 5 DEG C is 37.6cm, softening temperature is 66.5 DEG C) be heated to 155 DEG C, be hot mix 100s in the asphalt amalgamator of 175 DEG C with gathering materials in temperature; Add 4 parts of ice melting agents (chlorion type magnesium-aluminum-based laminar double hydroxide) again, 1 part of limestone dust (percent of pass of 200 mesh sieves is 85%) continues mix 55s, namely obtained from ice-melt asphalt.Test shows: be-4.7 DEG C with this from the bituminous concrete surface apparent freezing point that the compacting of ice-melt asphalt obtains, and is soaked its surperficial apparent freezing point after 6 hours and, still for-4.7 DEG C, separates out with in silver nitrate solution inspection soak solution without chlorion.
Embodiment 4:
Taking 88 parts of basalt aggregate, to put into temperature be the dry and preheating of the baking oven of 180 DEG C 3 hours, then by 6 parts of SBS modifying asphalts, (25 DEG C of penetration degrees are 52dmm, the ductility of 5 DEG C is 38.5cm, softening temperature is 65.4 DEG C) be heated to 154 DEG C, be hot mix 100s in the asphalt amalgamator of 175 DEG C with gathering materials in temperature, add 3 parts of ice melting agents (chlorion type magnesium-aluminum-based laminar double hydroxide) again, 3 parts of limestone dusts (percent of pass of 200 mesh sieves is 92.4%) continue mix 65s, namely obtained from ice-melt asphalt.Test shows: be-4.2 DEG C with this from the bituminous concrete surface apparent freezing point that the compacting of ice-melt asphalt obtains, soak its surperficial apparent freezing point after 6 hours and be still-4.2 DEG C, separate out with in silver nitrate solution inspection soak solution without chlorion.
Embodiment 5:
Long-acting environment friendly is from a preparation method for ice-melt asphalt, and it comprises the steps:
(1) by weight fraction shared by each raw material be: gather materials 87 parts, ice melting agent 6 parts, SBS modifying asphalt 7 parts, choose gather materials, ice melting agent, SBS modifying asphalt, for subsequent use;
Described ice melting agent is chlorion type magnesium-aluminum-based laminar double hydroxide;
Described gathers materials for basalt, hard, coarse, wear-resisting, clean, and its properties meets thick, the fine aggregate specification of quality of " standard specification for construction and acceptance of highway asphalt pavement " (GTJ F 40-2004) Asphalt Mixture;
The penetration degree of 25 DEG C of described SBS modifying asphalt is 30 ~ 60dmm, and the ductility of 5 DEG C is greater than 30cm, and softening temperature is between 60 ~ 75 DEG C;
(2) putting into temperature by gathering materials is the dry and preheating of the baking oven of 170 DEG C 3 hours, and the temperature of asphalt amalgamator is set to 175 DEG C;
(3) SBS modifying asphalt being heated to 160 DEG C joins in asphalt amalgamator, then will gather materials and add and its mix 90s, again chlorion type magnesium-aluminum-based laminar double hydroxide is joined in compound and continue mix 70s, obtain a kind of long-acting environment friendly from ice-melt asphalt.
Adopt this to be-6.3 DEG C from the bituminous concrete surface apparent freezing point that the compacting of ice-melt asphalt obtains, soaked its surperficial apparent freezing point after 6 hours and, still for-6.3 DEG C, separate out without chlorion with in silver nitrate solution inspection soak solution.
Embodiment 6:
Long-acting environment friendly is from a preparation method for ice-melt asphalt, and it comprises the steps:
(1) by weight fraction shared by each raw material be: gather materials 94 parts, ice melting agent 2 parts, breeze 4 parts, SBS modifying asphalt 4 parts, choose gather materials, ice melting agent, SBS modifying asphalt, breeze, for subsequent use;
Described ice melting agent is chlorion type magnesium-aluminum-based laminar double hydroxide;
Described gathers materials for limestone or basalt, hard, coarse, wear-resisting, clean, and its properties meets thick, the fine aggregate specification of quality of " standard specification for construction and acceptance of highway asphalt pavement " (GTJ F 40-2004) Asphalt Mixture;
The penetration degree of described SBS modifying asphalt 25 DEG C is 30 ~ 60dmm, and the ductility of 5 DEG C is greater than 30cm, and softening temperature is between 60 ~ 75 DEG C;
Described breeze is limestone powder, and the percent of pass of 200 mesh sieves is greater than 75%;
(2) putting into temperature by gathering materials is the dry and preheating of the baking oven of 190 DEG C 3 hours, and the temperature of asphalt amalgamator is set to 175 DEG C;
(3) SBS modifying asphalt is heated to 150 DEG C, then join in asphalt amalgamator, then will gather materials and add and its mix 120s, again chlorion type magnesium-aluminum-based laminar double hydroxide and breeze are joined in compound and continue mix 50s, obtain a kind of long-acting environment friendly from ice-melt asphalt.
Adopt this to be-3 DEG C from the bituminous concrete surface apparent freezing point that the compacting of ice-melt asphalt obtains, soaked its surperficial apparent freezing point after 6 hours and, still for-3 DEG C, separate out without chlorion with in silver nitrate solution inspection soak solution.
Claims (7)
1. long-acting environment friendly from an ice-melt asphalt, it is characterized in that: it by gathering materials, ice melting agent, breeze and SBS modifying asphalt form; Each component is counted by weight: gather materials 87 94 parts, ice melting agent 26 parts, breeze 04 parts, SBS modifying asphalt 47 parts, described ice melting agent is chlorion type magnesium-aluminum-based laminar double hydroxide, and described chlorion type magnesium-aluminum-based laminar double hydroxide is prepared from according to the ratio that mass ratio is 3:3:4 by magnesium-aluminum-based laminar double hydroxide, sodium-chlor and water.
2. a kind of long-acting environment friendly according to claim 1 from ice-melt asphalt, it is characterized in that: the preparation method of described chlorion type magnesium-aluminum-based laminar double hydroxide is: 30 parts of magnesium-aluminum-based laminar double hydroxides are placed in the retort furnace roasting 2 hours that temperature is 500 DEG C, then it is put into vacuum drier rapidly, after vacuumizing, be cooled to room temperature; 30 parts of sodium-chlor and 40 parts of water are mixed in there-necked flask; and be heated to 70 DEG C; the magnesium-aluminum-based laminar double hydroxide after roasting is taken out from moisture eliminator; join rapidly in there-necked flask; stir 30min under nitrogen protection; take out mixture deionized water wash to filter; until the filtrate after washing and filtering checks not chloride ion-containing with silver nitrate solution; then by filter cake in the baking oven of 110 DEG C dry 24 hours; take out drying solid to pulverize in high speed disintegrator; after grinding, cross 200 mesh sieves again, obtain chlorion type magnesium-aluminum-based laminar double hydroxide.
3. a kind of long-acting environment friendly according to claim 1 from ice-melt asphalt, it is characterized in that: described gathers materials for basalt.
4. a kind of long-acting environment friendly according to claim 1 from ice-melt asphalt, it is characterized in that: described breeze is limestone powder, and the percent of pass of 200 mesh sieves is greater than 75%.
5. a kind of long-acting environment friendly according to claim 1 from ice-melt asphalt, it is characterized in that: described SBS modifying asphalt, its 25 DEG C of penetration degrees are 30 60dmm, and the ductility of 5 DEG C is greater than 30cm, and softening temperature is between 60 75 DEG C.
6. the preparation method from ice-melt asphalt of a kind of long-acting environment friendly according to claim 1, is characterized in that, carries out in accordance with the following steps:
(1) by each composition weight number be: gather materials 87 94 parts, ice melting agent 26 parts, breeze 04 parts, SBS modifying asphalt 47 parts, choose gather materials, ice melting agent, SBS modifying asphalt, breeze, described ice melting agent is chlorion type magnesium-aluminum-based laminar double hydroxide, and described chlorion type magnesium-aluminum-based laminar double hydroxide is prepared from according to the ratio that mass ratio is 3:3:4 by magnesium-aluminum-based laminar double hydroxide, sodium-chlor and water;
(2) the baking oven preheating 3 hours that temperature is 170 190 DEG C is put into by gathering materials;
(3) SBS modifying asphalt is heated to 150 160 DEG C, joining temperature is again in the asphalt amalgamator of 175 DEG C, then gathering materials after preheating is added and its mix 90 120s, finally breeze and chlorion type magnesium-aluminum-based laminar double hydroxide are joined in compound and continue mix 50 70 s, obtain from ice-melt asphalt.
7. the preparation method from ice-melt asphalt of a kind of long-acting environment friendly according to claim 6, it is characterized in that, the preparation method of described chlorion type magnesium-aluminum-based laminar double hydroxide is: 30 parts of magnesium-aluminum-based laminar double hydroxides are placed in the retort furnace roasting 2 hours that temperature is 500 DEG C, then it is put into vacuum drier rapidly, after vacuumizing, be cooled to room temperature; 30 parts of sodium-chlor and 40 parts of water are mixed in there-necked flask; and be heated to 70 DEG C; the magnesium-aluminum-based laminar double hydroxide after roasting is taken out from moisture eliminator; join rapidly in there-necked flask; stir 30min under nitrogen protection; take out mixture deionized water wash to filter; until the filtrate after washing and filtering checks not chloride ion-containing with silver nitrate solution; then by filter cake in the baking oven of 110 DEG C dry 24 hours; take out drying solid to pulverize in high speed disintegrator; after grinding, cross 200 mesh sieves again, obtain chlorion type magnesium-aluminum-based laminar double hydroxide.
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| CN104672929A (en) * | 2015-02-05 | 2015-06-03 | 江西赣粤高速公路股份有限公司 | Preparation method of anti-freezing asphalt material |
| CN105384393A (en) * | 2015-11-30 | 2016-03-09 | 盖波 | Freeze-resisting asphalt mixture and preparation method thereof |
| CN106082793A (en) * | 2016-06-29 | 2016-11-09 | 河北建筑工程学院 | Slow release salt composite phase-change material asphalt and preparation method thereof |
| CN109135674A (en) * | 2018-09-11 | 2019-01-04 | 武汉市市政建设集团有限公司 | A kind of multifunctional drainage deicing salt and preparation method thereof |
| CN110395942A (en) * | 2019-07-26 | 2019-11-01 | 中交一公局第三工程有限公司 | Ice-melt disappear avenge asphalt and preparation method thereof, ice-melt disappears and avenges asphalt concrete pavement and its construction method |
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| CN109135674A (en) * | 2018-09-11 | 2019-01-04 | 武汉市市政建设集团有限公司 | A kind of multifunctional drainage deicing salt and preparation method thereof |
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| CN110395942A (en) * | 2019-07-26 | 2019-11-01 | 中交一公局第三工程有限公司 | Ice-melt disappear avenge asphalt and preparation method thereof, ice-melt disappears and avenges asphalt concrete pavement and its construction method |
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| CN104261728B (en) | 2017-03-22 |
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