CN102408872B - Salt-storing deicing material special for asphalt pavement and preparation method thereof - Google Patents
Salt-storing deicing material special for asphalt pavement and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a salt-storing deicing material special for asphalt pavement and a preparation method thereof. A salt-storing deicing material special for asphalt pavement is characterized in that the deicing material comprises an inorganic freezing point lowering main agent, an inorganic auxiliary freezing point lowering agent, a freezing retardant, an ice layer softener and a releasing stabilizer, and the mass fractions of the components are that 20-40 parts of inorganic freezing point lowering main agents, 10-30 parts of inorganic auxiliary freezing point lowering agents, 5-25 parts of freezing retardants, 5-25 parts of ice layer softeners, and 30-60 parts of releasing stabilizers. The deicing material has obvious deicing effect.
Description
Technical field
The invention belongs to material technology field, be specifically related to a kind of deicing material for bituminous pavement and preparation method thereof.
Background technology
Winter road snow to freeze be all the large problem of puzzlement highway communication all the time.Owing to covering ice and snow on road surface, tire and road surface loss of adhesion, very easily causes traffic accident, can cause highway communication paralysis when serious, even causes the heavy losses of life, property.For solving problems, a lot of departments have carried out a large amount of analysis and research work, for de-icing method, many invaluable experiences have been explored, all things considered is roughly divided into Physical and chemical method, Physical comprises artificial except snow dust, mechanical removal method, or reach snow melt deicing object by the means such as stone material that sand, often manpower consumption is large for these class methods, road pavement is destroyed serious, and the effect that opens ice is also not ideal enough, chemical process generally refers to the use of all kinds of organic-inorganic Snow Agent, current this method is widely adopted, but because it is too large on the impact of surrounding environment, not only corrode road surface, also can cause highway surrounding environment to be polluted, in addition, favourable with method heated asphalt road surfaces such as electric heating or underground heat, road table temperature is raise and reach the object thawing ice and snow, the snow melt deicing of this method is satisfactory for result, but its construction and maintenance cost are too high, thereby cannot in construction, apply on a large scale.
In the last few years, start to have occurred that this class methods construction cost is low about holding salt from the research on snow melt deicing road surface, and saved manpower, environmental pollution is little, and engineering application deicing successful, by the study hotspot becoming from now on.
But the bituminous pavement that holds salt formula, due to reasons such as its snow melt component savings mode are improper, causes it to discharge degree of stability not high, and some road has even just lost deicing function after construction in short duration.In addition, although common snow melt deicing agent had been widely used in the last few years, solved to a great extent the impact of the unfavorable citizens' activities that ice and snow brings.Yet, existing common Snow Agent snow melt effect is single, no matter being directly spread on road surface still holds in asphalt, thawing part ice and snow that all can only be temporary transient, cannot tackle the extensive road snow mantle that complicated severe ice and snow weather condition causes freezes, so the deicing effect of traditional snow melt deicing agent is unsatisfactory, the scope of application is also restricted under many circumstances.In addition, traditional deicer salts corrosion highway pavement, reduces the pavement performance on road surface, shortens the work-ing life of highway.And the environment of near Highway is produced to negative impact, cause saline Land, and destroy highway surrounding plants, for China has brought huge financial loss.
Summary of the invention
The object of the present invention is to provide a kind of salt formula deicing material special for asphalt pavement and preparation method thereof that holds, the deicing successful of this deicing material.
For achieving the above object, technical scheme of the present invention is: a kind of salt formula deicing material special for asphalt pavement that holds, it is characterized in that it by inorganic freeze point depression host, organic auxiliary freeze point depression agent, freeze delayed-action activator, ice sheet tenderizer and discharge stablizer to form, the shared mass fraction of each component is:
Inorganic freeze point depression host: 20-40 part,
Organic auxiliary freeze point depression agent: 10-30 part,
Freeze delayed-action activator: 5-25 part,
Ice sheet tenderizer: 5-25 part,
Discharge stablizer: 30-60 part.
It is 20-200 object Calcium Chloride Powder Anhydrous that described inorganic freeze point depression host is selected fineness.
Described organic auxiliary freeze point depression agent is any one or any two or more mixing in ethylene glycol, 1-2 propylene glycol, glycerol, urea, is any proportioning during any two or more mixing.
The described delayed-action activator that freezes is N, dinethylformamide, N, N-N,N-DIMETHYLACETAMIDE, N, any one or any two or more mixing in N-dihydroxy ethyl long chain fatty acids amides, sodium polyacrylate, maleic anhydride isobutene polymer, is any proportioning during any two or more mixing.
Described ice sheet tenderizer, by being any one or any two or more mixing in 1,6 hexanediol diacrylate, octadecyl trimethylammonium sulfate methyl ammonium, 1-Methoxy-2-propyl acetate, is that any proportioning combines during any two or more mixing.
Described release stablizer is the mixing of any one or any two kinds in cement, slaked lime, and the mass ratio of two kinds of cement while mixing and slaked lime is: 100: 1-40.
Described cement is ordinary Portland cement, and label is P.O 52.5, and specific surface area is not less than 300m
2/ kg.
Above-mentioned a kind of preparation method who holds salt formula deicing material special for asphalt pavement, is characterized in that it comprises the steps:
1) by the shared mass fraction of each component, be: inorganic freeze point depression host 20-40 part, organic auxiliary freeze point depression agent 10-30 part, freeze delayed-action activator 5-25 part, ice sheet tenderizer 5-25 part, discharge stablizer 30-60 part, choose inorganic freeze point depression host, organic auxiliary freeze point depression agent, freeze delayed-action activator, ice sheet tenderizer and discharge stablizer, standby;
2) inorganic freeze point depression host and release stablizer are added to the opening for feed of fluidized bed pelletizer, open bottom air, mix 5-10min (allow two kinds of components under fluidized-bed bottom air blows in fluidization, and reach mix object), then organic auxiliary freeze point depression agent, freeze delayed-action activator, by infusion set, by spraying into after pressurized air carries out atomization mixing, in the bed of fluidized bed pelletizer, (powder forms larger particle through boiling rolling to ice sheet tenderizer gradually, this method advantage is to mix, granulation, the operation such as dry once completes in an airtight fluidized-bed, operational safety hygienic and convenient, be applicable to product preparation of the present invention, the particulate of making meets necessary requirement completely), mix, granulation, dry, what obtain particle diameter and be 0.5mm-2mm holds salt formula deicing material special for asphalt pavement.
The invention solves the current salt formula bituminous pavement deicing material property the released shakiness of holding, the deicing effect causing is not lasting, and ice-melt function singleness, resist the situation of complicated ice and snow weather ice-melt effect deficiency, and improve deicing material part component damage to the environment, reduce the problem of pavement life
Deicing material of the present invention is applied to hold salt bituminous concrete pavement, can be at the decline freezing temperature of low road surface snow-broth of ice and snow environment, the freezing time that postpones road surface under low temperature, the decline hardness of low road surface ice sheet of utmost point low temperature, many-side reaches snow melt deicing object, and the speed that stable deicing component discharges, has significantly improved under complicated ice and snow environment the initiatively long-term deicing effect on deicing road surface.Product component environmental protection of the present invention, has reduced the infringement on snow melt deicing agent environmental pollution and road surface, and easily manufactured, with low cost.Can be widely used in the active deicing of bituminous pavement under road and bridge and other various envrionment conditionss.
Deicing material of the present invention not only makes road deicing successful strengthen, and can tackle the road snow mantle causing under various weather conditions and freeze, and the release of snow melt ability is stable, has fewer environmental impacts, meet the requirement of environmental protection.
Beneficial effect of the present invention:
1, several component of the present invention acting in conjunction under subzero temperature environment, reach the maximized effect of deicing under ice and snow weather, many-sided road surface running vehicle safety that guarantees, for long-time subzero temperature ice and snow environment, effect under the mal-conditions such as utmost point low temperature environment is good, makes this product have the wide scope of application.
Inorganic freeze point depression host of the present invention and organic auxiliary freeze point depression agent have the effect of the freezing point that reduces water, and the theoretical basis of dependence is depression of the freezing point theory: so-called zero pour refer to something liquid with solid-state two-phase in balance, both temperature can mutually coexist time.When neat solvent (such as water) reaches freezing point temperature, solid, liquid two-phase reaches balance, and both partial potentials equate.When a certain amount of solute is dissolved in solvent formation dilute solution, its zero pour is low by the zero pour than neat solvent, is called depression of the freezing point.The present invention adopts the compound freeze point depression scheme of organic and inorganic, due to inorganic with organic constituent different with the mode of action in ice and snow contact process, under a stable condition, can significantly increase the action effect of Snow Agent.
Freezing delay agent and can make the reach the freezing point frozen water of temperature of part temporarily not freeze in the present invention, extend its time under supercooled state, stop it to undergo phase transition, the time that starts to freeze lags behind, reduced the icing pressure of road, during this period of time make not accumulated snow, icing of road, guarantee road traffic safety.N in this component, dinethylformamide, N, N-N,N-DIMETHYLACETAMIDE, N, N-dihydroxy ethyl long chain fatty acids amides, sodium polyacrylate, or maleic anhydride isobutene polymer plays a role to frozen water system under state at negative temperature, because water freezing needs the nuclei of crystallization, and producing nuclei of crystallization needs nucleus to generate energy, when if the core size forming does not reach critical radius, just cannot stable existence and growth, the delay agent that freezes provided by the invention is very easily adsorbed by aqueous solution intermediate ion " impurity ", and the surface that can change these " impurity " can, thereby play the icing effect that postpones.Adding of this kind of component extended the time that ice starts to freeze greatly, reduced possibility icy on road under freezing temperature within a certain period of time.
Ice sheet tenderizer in the present invention can reduce the hardness of the rear ice sheet that freezes, and experiment discovery, adds after ice sheet tenderizer, and the surface of ice is no longer fine and close, and becomes fluffy, becomes layered distribution.When volume reaches after certain proportion, solution to crystallize into ice just no longer fine and close, the penetration degree test value of ice face significantly improves, this principle is mainly to add after ice sheet tenderizer, and the denseness of the aqueous solution improves, thereby has changed direction and the speed of water crystallization body development growth, making ice-nucleus is not that each is to orderly tight growth, meanwhile, ice sheet tenderizer also plays the effect of isolation ice crystal nucleus, makes ice no longer hard.Once live through long subzero temperature under serious ice and snow environment, cause a large amount of ice and snow to freeze, loose ice sheet can not have a strong impact on traffic yet, under wheel rolls, is easy to fragmentation, and makes de-icing work easily carry out yet.
2, this product has good release stability, guarantees that road surface still can possess basic deicing function after long-time use.The main component that discharges stablizer due to the present invention is cement and slaked lime, particle fineness is less, after mixing with other solid ingredient grindings, can disperse fully solid-state deicing component, and by forming fine particle with liquid composition mixing granulation, be dispersed in the upper layer of bituminous pavement, owing to thering is certain hydration, can be fixed gradually in compound, formation is with cement, slaked lime is skeleton, wherein in UNICOM duct, be dispersed with the small-particle of deicing component, under sleety weather, the deicing material on top layer is dissolved into rainwater, reach and suppress the effect of freezing, owing to there being the skeleton consolidation that discharges stablizer, inner snow melt component is through suction function capillaceous, progressively be released into particle surface, its dissolution rate has obtained good control, deicing effect also meets pavement usage requirement completely.In addition cement add the effect of also having played antistripping, improved the ability of road surface opposing Water Damage, promoted the use properties on road surface.
3, this deicing material forms in design, reduced the content of inorganic component, and having selected the calcium chloride having fewer environmental impacts is inorganic freeze point depression host, and utilize stablizer to solidify the easily deicing component to environment, greatly reduce the pollution condition of deicing salt on environment, also reduced the damaged condition of using Snow Agent road pavement.
4, this product processes is simple, and starting material acquiring way is easy and convenient, has significantly reduced road surface deicing operating cost.
Embodiment
For a better understanding of the present invention, below in conjunction with some embodiment, further set forth content of the present invention, but content of the present invention is not only confined to the following examples.
Embodiment 1:
It is example that the production 1000g of take holds salt formula deicing material special for asphalt pavement, each raw material consumption following (in system, each component is commercial goods):
Inorganic freeze point depression host: 400g;
Organic auxiliary freeze point depression agent: 100g;
Freeze delayed-action activator: 100g;
Ice sheet tenderizer: 100g;
Discharge stablizer: 300g.
It is 20-200 object Calcium Chloride Powder Anhydrous that described inorganic freeze point depression host is selected fineness.
Described organic auxiliary freeze point depression agent is comprised of ethylene glycol and urea, and mass ratio is ethylene glycol: urea=100: 65; The described delayed-action activator that freezes is comprised of sodium polyacrylate, maleic anhydride isobutene polymer, and mass ratio is sodium polyacrylate: maleic anhydride isobutene polymer=100: 90; Described ice sheet tenderizer is 1,6 hexanediol diacrylate; Described release stablizer is P.O 42.5 ordinary Portland cements.
The above-mentioned salt formula deicing material special for asphalt pavement that holds adopts fluidized bed pelletizer granulation; first Powdered calcium chloride and cement are joined in tablets press; open bottom air; after mixing 5min, in infusion set, add ethylene glycol, urea, sodium polyacrylate, maleic anhydride isobutene polymer and 1; 6-hexanediyl ester; pour pressurized air atomization above-mentioned substance, carry out granulation, finally obtain after drying particle diameter at the product of 0.5mm-2mm.
The deicing effect of the deicing material that the present embodiment is produced is as shown in table 1, wherein ice sheet percentage of damage is that seating load rolls the road surface of freezing to have 1cm ice sheet, and utilize surface crack statistics ice sheet percentage of damage, and freezing time is under-5 ℃ of environment, surface is extremely frozen the time used by ponding.It is as shown in the table, and the road surface of using this deicing material is greatly increased than the deicing effect of prevailing roadway, and be better than common calcium chloride snow melting agent.
Table 1 deicing effect assessment result
Embodiment 2:
It is example that the production 1000g of take holds salt formula deicing material special for asphalt pavement, each raw material consumption following (in system, each component is commercial goods):
Inorganic freeze point depression host: 400g;
Organic auxiliary freeze point depression agent: 150g;
Freeze delayed-action activator: 50g;
Ice sheet tenderizer: 50g;
Discharge stablizer: 350g.
It is 20-200 object calcium chloride that described inorganic freeze point depression host is selected fineness.
Described organic auxiliary freeze point depression agent is comprised of ethylene glycol; The described delayed-action activator that freezes is comprised of sodium polyacrylate, maleic anhydride isobutene polymer, and mass ratio is sodium polyacrylate: maleic anhydride isobutene polymer=100: 120; Described ice sheet tenderizer is 1,6 hexanediol diacrylate; Described release stablizer is P.O 42.5 ordinary Portland cements and slaked lime, and mass ratio is ordinary Portland cement: slaked lime=100: 20.
The above-mentioned salt formula deicing material special for asphalt pavement that holds adopts fluidized bed pelletizer granulation; first Powdered calcium chloride, cement and slaked lime are joined in tablets press; open bottom air; after mixing 10min, in infusion set, add ethylene glycol, sodium polyacrylate, maleic anhydride isobutene polymer and 1; 6-hexanediyl ester; pour pressurized air atomization above-mentioned substance, carry out granulation, finally obtain after drying particle diameter at the product of 0.5mm-2mm.
The using method that this kind holds salt formula deicing material special for asphalt pavement is as follows:
At bituminous concrete, add after asphalt mixing, this deicing material and breeze are successively thrown in agitator, mix uniform with asphalt, the add-on of this kind of Snow Agent is asphalt concrete quality 1% to 4%, with outer doping, adds compound.
The deicing effect of the deicing material that the present embodiment is produced is as shown in table 2, and wherein ice sheet percentage of damage is that seating load rolls the road surface of freezing to have 1cm ice sheet, and utilizes surface crack statistics ice sheet percentage of damage; Freezing time is under-5 ℃ of environment, and surface is extremely frozen the time used by ponding.It is as shown in the table, and the road surface of using this deicing material is greatly increased than the deicing effect of prevailing roadway, and deicing effect is better than common calcium chloride snow melting agent.
Table 2 deicing effect assessment result
Embodiment 3:
It is example that the production 1000g of take holds salt formula deicing material special for asphalt pavement, each raw material consumption following (in system, each component is commercial goods):
Inorganic freeze point depression host: 300g;
Organic auxiliary freeze point depression agent: 100g;
Freeze delayed-action activator: 50g;
Ice sheet tenderizer: 50g;
Discharge stablizer: 500g.
It is 20-200 object Calcium Chloride Powder Anhydrous that described inorganic freeze point depression host is selected fineness.
Described organic auxiliary freeze point depression agent is comprised of ethylene glycol and 1-2 propylene glycol, and mass ratio is ethylene glycol: 1-2 propylene glycol=100: 120; The described delayed-action activator that freezes is comprised of sodium polyacrylate; Described ice sheet tenderizer is 1-Methoxy-2-propyl acetate; Described release stablizer is P.O 42.5 cement and slaked lime, and mass ratio is cement: slaked lime=100: 10.
The above-mentioned salt formula deicing material special for asphalt pavement that holds adopts fluidized bed pelletizer granulation; first Powdered calcium chloride, cement and slaked lime are joined in tablets press; open bottom air; after mixing 10min, in infusion set, add ethylene glycol, 1-2 propylene glycol, sodium polyacrylate and 1-Methoxy-2-propyl acetate; and pour pressurized air atomization; carry out granulation, finally obtain after drying particle diameter at the product of 0.5mm-2mm.
The deicing effect of the deicing material that the present embodiment is produced is as shown in table 3, and wherein ice sheet percentage of damage is that seating load rolls the road surface of freezing to have 1cm ice sheet, and utilizes surface crack statistics ice sheet percentage of damage; Freezing time is under-5 ℃ of environment, and surface is extremely frozen the time used by ponding.It is as shown in the table, and the road surface of using this deicing material is greatly increased than the deicing effect of prevailing roadway, and deicing effect is better than common calcium chloride snow melting agent.
Table 3 deicing effect assessment result
Embodiment 4:
It is example that the production 1000g of take holds salt formula deicing material special for asphalt pavement, each raw material consumption following (in system, each component is commercial goods):
Inorganic freeze point depression host: 400g;
Organic auxiliary freeze point depression agent: 150g;
Freeze delayed-action activator: 50g;
Ice sheet tenderizer: 100g;
Discharge stablizer: 300g.
It is 20-200 object Calcium Chloride Powder Anhydrous that described inorganic freeze point depression host is selected fineness.
Described organic auxiliary freeze point depression agent is ethylene glycol; The described delayed-action activator that freezes is comprised of sodium polyacrylate, DMF, N,N-dimethylacetamide, and mass ratio is sodium polyacrylate: DMF: N,N-dimethylacetamide=100: 35: 30; Described ice sheet tenderizer is 1-Methoxy-2-propyl acetate and octadecyl trimethylammonium sulfate methyl ammonium, and mass ratio is 1-Methoxy-2-propyl acetate: octadecyl trimethylammonium sulfate methyl ammonium=100: 60; Described release stablizer is P.O42.5 cement.
The above-mentioned salt formula deicing material special for asphalt pavement that holds adopts fluidized bed pelletizer granulation; first Powdered calcium chloride, cement are joined in tablets press; open bottom air; after mixing 5min, in infusion set, add ethylene glycol, sodium polyacrylate, N; dinethylformamide, N; N-N,N-DIMETHYLACETAMIDE, 1-Methoxy-2-propyl acetate, octadecyl trimethylammonium sulfate methyl ammonium pour pressurized air atomization, carry out granulation, finally obtain after drying particle diameter at the product of 0.5mm-2mm.
The deicing effect of the deicing material that the present embodiment is produced is as shown in table 4, and wherein ice sheet percentage of damage is that seating load rolls the road surface of freezing to have 1cm ice sheet, and utilizes surface crack statistics ice sheet percentage of damage; Freezing time is under-5 ℃ of environment, and surface is extremely frozen the time used by ponding.It is as shown in the table, and the road surface of using this deicing material is greatly increased than the deicing effect of prevailing roadway, and deicing effect is better than common calcium chloride snow melting agent.
Table 4 deicing effect assessment result
Embodiment 5:
It is example that the production 1000g of take holds salt formula deicing material special for asphalt pavement, each raw material consumption following (in system, each component is commercial goods):
Inorganic freeze point depression host: 200g;
Organic auxiliary freeze point depression agent: 300g;
Freeze delayed-action activator: 250g;
Ice sheet tenderizer: 250g;
Discharge stablizer: 600g.
It is 20-200 object Calcium Chloride Powder Anhydrous that described inorganic freeze point depression host is selected fineness.
Described organic auxiliary freeze point depression agent is ethylene glycol and glycerol, and mass ratio is ethylene glycol: glycerol=100: 50; The described delayed-action activator that freezes is comprised of DMF, N,N-dimethylacetamide, and mass ratio is DMF: N,N-dimethylacetamide=100: 65; Described ice sheet tenderizer is 1,6 hexanediol diacrylate and octadecyl trimethylammonium sulfate methyl ammonium, and mass ratio is 1,6 hexanediol diacrylate: octadecyl trimethylammonium sulfate methyl ammonium=100: 60; Described release stablizer is P.O 42.5 cement and slaked lime, and mass ratio is cement: slaked lime=100: 30.
The above-mentioned salt formula deicing material special for asphalt pavement material that holds adopts fluidized bed pelletizer granulation; first Powdered calcium chloride, cement and slaked lime are joined in tablets press; open bottom air; after mixing 15min, in infusion set, add ethylene glycol, glycerol, N; dinethylformamide, N; N-N,N-DIMETHYLACETAMIDE, 1; 6-hexanediyl ester, octadecyl trimethylammonium sulfate methyl ammonium pour pressurized air atomization; carry out granulation, finally obtain after drying particle diameter at the product of 0.5mm-2mm.
The deicing effect of the deicing material that the present embodiment is produced is as shown in table 5, and wherein ice sheet percentage of damage is that seating load rolls the road surface of freezing to have 1cm ice sheet, and utilizes surface crack statistics ice sheet percentage of damage; Freezing time is under-5 ℃ of environment, and surface is extremely frozen the time used by ponding.It is as shown in the table, and the road surface of using this deicing material is greatly increased than the deicing effect of prevailing roadway, and deicing effect is better than common calcium chloride snow melting agent.
Table 5 deicing effect assessment result
Embodiment 6:
Substantially the same manner as Example 5, difference is: described organic auxiliary freeze point depression agent is glycerol, the described delayed-action activator that freezes is N, N-dihydroxy ethyl long chain fatty acids amides, described ice sheet tenderizer is by being octadecyl trimethylammonium sulfate methyl ammonium, and described release stablizer is slaked lime.
The deicing effect of the deicing material that the present embodiment is produced is as shown in table 6, and wherein ice sheet percentage of damage is that seating load rolls the road surface of freezing to have 1cm ice sheet, and utilizes surface crack statistics ice sheet percentage of damage; Freezing time is under-5 ℃ of environment, and surface is extremely frozen the time used by ponding.It is as shown in the table, and the road surface of using this deicing material is greatly increased than the deicing effect of prevailing roadway, and deicing effect is better than common calcium chloride snow melting agent.
Table 6 deicing effect assessment result
Each cited raw material of the present invention can be realized the present invention, and the bound value of each raw material, interval value can realize the present invention; At this, do not enumerate.
Claims (3)
1. hold a salt formula deicing material special for asphalt pavement, it is characterized in that it by inorganic freeze point depression host, organic auxiliary freeze point depression agent, freeze delayed-action activator, ice sheet tenderizer and discharge stablizer to form, the shared mass fraction of each component is:
Inorganic freeze point depression host: 20-40 part,
Organic auxiliary freeze point depression agent: 10-30 part,
Freeze delayed-action activator: 5-25 part,
Ice sheet tenderizer: 5-25 part,
Discharge stablizer: 30-60 part;
It is 20-200 object Calcium Chloride Powder Anhydrous that described inorganic freeze point depression host is selected fineness;
Described organic auxiliary freeze point depression agent is any one or any two or more mixing in ethylene glycol, 1-2 propylene glycol, glycerol, urea, is any proportioning during any two or more mixing;
The described delayed-action activator that freezes is N, dinethylformamide, N, N-N,N-DIMETHYLACETAMIDE, N, any one or any two or more mixing in N-dihydroxy ethyl long chain fatty acids amides, sodium polyacrylate, maleic anhydride isobutene polymer, is any proportioning during any two or more mixing;
Described ice sheet tenderizer is any one or any two or more mixing in 1,6 hexanediol diacrylate, octadecyl trimethylammonium sulfate methyl ammonium, 1-Methoxy-2-propyl acetate, is that any proportioning combines during any two or more mixing;
Described release stablizer is the mixing of any one or any two kinds in cement, slaked lime, and the mass ratio of two kinds of cement while mixing and slaked lime is: 100 ︰ 1-40.
2. a kind of salt formula deicing material special for asphalt pavement that holds according to claim 1, is characterized in that: described cement is ordinary Portland cement, and label is P.O 52.5, and specific surface area is not less than 300m
2/ kg.
3. a kind of preparation method who holds salt formula deicing material special for asphalt pavement as claimed in claim 1, is characterized in that it comprises the steps:
1) by the shared mass fraction of each component, be: inorganic freeze point depression host 20-40 part, organic auxiliary freeze point depression agent 10-30 part, freeze delayed-action activator 5-25 part, ice sheet tenderizer 5-25 part, discharge stablizer 30-60 part, choose inorganic freeze point depression host, organic auxiliary freeze point depression agent, freeze delayed-action activator, ice sheet tenderizer and discharge stablizer, standby;
2) inorganic freeze point depression host and release stablizer are added to the opening for feed of fluidized bed pelletizer; open bottom air; mix 5-10min; then organic auxiliary freeze point depression agent, freeze delayed-action activator, ice sheet tenderizer by infusion set by spraying into after pressurized air carries out atomization mixing in the bed of fluidized bed pelletizer; mix, granulation; dry, what obtain particle diameter and be 0.5mm-2mm holds salt formula deicing material special for asphalt pavement.
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| CN111087827A (en) * | 2019-12-20 | 2020-05-01 | 中国人民解放军空军勤务学院 | Asphalt composite additive containing amorphous carbon and silicone rubber elastohydrodynamic and preparation method thereof |
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| CN102408872A (en) | 2012-04-11 |
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