CN102952293A - Compound rubber powder modifying agent as well as preparation method and application method thereof - Google Patents
Compound rubber powder modifying agent as well as preparation method and application method thereof Download PDFInfo
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- CN102952293A CN102952293A CN2011102517663A CN201110251766A CN102952293A CN 102952293 A CN102952293 A CN 102952293A CN 2011102517663 A CN2011102517663 A CN 2011102517663A CN 201110251766 A CN201110251766 A CN 201110251766A CN 102952293 A CN102952293 A CN 102952293A
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- 239000000843 powder Substances 0.000 title claims abstract description 128
- 229920001971 elastomer Polymers 0.000 title claims abstract description 94
- 239000005060 rubber Substances 0.000 title claims abstract description 94
- 150000001875 compounds Chemical class 0.000 title claims abstract description 51
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 63
- 239000010426 asphalt Substances 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000003292 glue Substances 0.000 claims description 46
- 239000002131 composite material Substances 0.000 claims description 42
- 239000012752 auxiliary agent Substances 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 239000004567 concrete Substances 0.000 claims description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 5
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 4
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 3
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 3
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- 239000005977 Ethylene Substances 0.000 claims description 2
- 244000043261 Hevea brasiliensis Species 0.000 claims description 2
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 claims description 2
- 229920003193 cis-1,4-polybutadiene polymer Polymers 0.000 claims description 2
- 239000011280 coal tar Substances 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 229920003052 natural elastomer Polymers 0.000 claims description 2
- 229920001194 natural rubber Polymers 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 claims description 2
- 229920001195 polyisoprene Polymers 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000010920 waste tyre Substances 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 3
- 239000011384 asphalt concrete Substances 0.000 abstract 1
- 239000004067 bulking agent Substances 0.000 abstract 1
- 239000011295 pitch Substances 0.000 description 29
- 230000000052 comparative effect Effects 0.000 description 20
- 238000005452 bending Methods 0.000 description 10
- 230000000717 retained effect Effects 0.000 description 10
- 238000010257 thawing Methods 0.000 description 10
- 235000019738 Limestone Nutrition 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 9
- 239000006028 limestone Substances 0.000 description 9
- 239000002699 waste material Substances 0.000 description 7
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 6
- 238000010998 test method Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000010074 rubber mixing Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 150000003935 benzaldehydes Chemical class 0.000 description 2
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VSKJLJHPAFKHBX-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 VSKJLJHPAFKHBX-UHFFFAOYSA-N 0.000 description 1
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 1
- VHOQXEIFYTTXJU-UHFFFAOYSA-N Isobutylene-isoprene copolymer Chemical group CC(C)=C.CC(=C)C=C VHOQXEIFYTTXJU-UHFFFAOYSA-N 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- UYMKPFRHYYNDTL-UHFFFAOYSA-N ethenamine Chemical compound NC=C UYMKPFRHYYNDTL-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2317/00—Characterised by the use of reclaimed rubber
Abstract
The invention provides a compound rubber powder modifying agent as well as a preparation method and an application method thereof. The preparation method comprises the step of stirring rubber powder, a bulking agent and an assistant for 0.5-5 hours at normal temperature to obtain a compound rubber powder modifying agent. In a process of producing asphalt concrete, the compound rubber powder modifying agent is directly added into a mixture stirring pot, and is mixed with stones and asphalt at a temperature of 120-220 DEG C and stirred for about 20-120 seconds to obtain a rubber powder modified asphalt mixture. A road paved by using the mixture has better high-temperature track resistance and low-temperature cracking resistance, and is a road paving material with excellent properties.
Description
Technical field
The present invention relates to a kind of composite glue powder properties-correcting agent and preparation method thereof, described composite glue powder properties-correcting agent is used for the bituminous concrete production process.
Background technology
Pitch is as the pavement material of road, building and water conservancy industry, develops very fastly, but pitch is larger to the susceptibility of temperature, has the summer high temperature trickling, and therefore the problem of winter low temperature cracking, has brought certain restriction to its application.
Given this, adding the various material modified temperature sensitivities of improving pitch in the pitch more and more is subject to people's attention.At present, most widely used is polymer class properties-correcting agent, mainly comprises the thermoplastic elastomer class, as: styrene-butadiene-styrene (SBS), styrene-isoprene-phenylethene (SIS) etc.; Rubber-like, as: isoprene-isobutylene rubber, styrene-butadiene rubber(SBR) etc.; Resene, as: polyethylene (PE) etc.The adding of different sorts polymer modifiers can improve the high temperature resistant property of pitch, the cold resistance that improves pitch can or improve the high temperature performance of pitch simultaneously, thereby reaches the effect that reduces asphalt temperature susceptibility.But, because above-mentioned polymer modifiers price is very high, causes the cost of modifying asphalt significantly to increase, thereby restricted the propagation and employment of this class modifying asphalt, therefore, people attempt to seek the more excellent properties-correcting agent of the ratio of performance to price and change this situation.In this case, waste rubber powder has caused people's extensive concern as asphalt modifier.
At present, rubber powder is applied to asphalt modification and mainly contains two kinds of methods: 1, dry method.Be about to rubber powder and directly be added in the compound mix pot, directly improve mixture performance.Owing to reasons such as former rubber powder granularity are large, unprocessed, the compound of dry production exists performance index to improve the problems such as little and unstable; 2, wet method.Namely first rubber powder is added in the pitch and make rubber powder modified asphalt through high-temperature fusion or after further grinding shearing, and then mix with building stones, the asphalt index that this method is produced improves obvious and steady quality, and energy expenditure is large, environmental pollution large, the rubber powder degradation property descends, store the problems such as transportation is difficult but exist.
It is properties-correcting agent that CN 1041367A adopts the ethylene amine, at normal temperatures waste rubber powder is carried out modification, is used for the production of reclaimed rubber.Modified glue powder or the modified glue powder sheet of this law preparation can directly be mixed in proportion, the rubber-modified rubber powder matrix material physics that makes, mechanical property excellence.CN1087099A discloses a kind of modification processing method for waste amine sulfide powder, is to adopt quaternary ammonium salt compound as properties-correcting agent, and its add-on is 0.2～2 deal of rubber powder, adds simultaneously a certain amount of tenderizer and mixes under normal pressure, normal temperature.Waste amine sulfide powder after this modification can be used as the cheap raw material of making various rubber items (such as doughnut, travelling belt etc.).CN 1086229A relates to a kind of method for preparing fine particle regenerated rubber with waste old, the rubber powder that adopts is for passing through the meticulous uniformly rubber powder of 40-60 mesh sieve, rubber powder is 100 with the weight ratio of the regenerative mixed oil that stirs into: 5-10, the fine particle regenerated rubber cost that makes is low, can directly be incorporated into to replace the part rubber to use in the rubber item.CN 1133773A discloses a kind of process for regenerating used rubber.The method mainly comprises producing of waste rubber powder, mixing and three steps of compressing tablet finished product, its special character be mixing be at normal temperatures, in rubber mixing machine, 100 parts of waste rubber powders and 3-20 part benzaldehyde class material are dropped into rubber mixing machine, they are mixed, then, will be from rubber mixing machine out rubber powder slough benzaldehyde class material between xanthan molecule.
US4,992, relate to a kind of method that under 175～180 ℃ of conditions, prepares the rubber powder bituminous composition with pitch, useless pearl glue, extending oil and high molecular olefinic unsaturated synthetic rubber in 492, the method need to be stablized rubber powder granule with high molecular olefinic unsaturated synthetic rubber, it is stabilized in the pitch, belongs to the wet method rubber powder modified asphalt.
In addition, what the prior art of most of rubber powder modified asphalt related to is the wet method rubber powder modified asphalt, and does not relate to the dry process that rubber powder directly adds mix.
Summary of the invention
The purpose of this invention is to provide a kind of composite glue powder properties-correcting agent and its preparation method and application method, purpose is rationally to utilize the rubber powder resource, solves the problems such as the energy consumption that exists in the current rubber powder modified asphalt application process is large, pollution is large.
Composite glue powder properties-correcting agent provided by the invention is comprised of following component and corresponding ratio:
Rubber powder: 65～98.9% weights
Expanding material: 1～30% weight
Auxiliary agent: 0.1～5% weight,
Described rubber powder refers to waste-tyre rubber-powder;
Described expanding material refers to oily substance;
Described auxiliary agent is selected from one or more in superoxide, the metal oxide.
Described rubber powder mainly refers to the rubber powder that junked tire obtains here after broken glue, pulverizing, demetalization, defiber, be to be made through pulverizing by one or more junked tires that consist of in natural rubber, styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber and the polyisoprene rubber.Described rubber powder belongs to rubber-like, but it is different from again above-mentioned rubber, and this rubber powder is the rubber through solid cure, self property is very stable, in addition, in described rubber powder, also contain a large amount of mineral fillers and the various auxiliary agents such as anti-aging agent, vulcanizing agent, form very complicated.The granularity of described rubber powder is between 20～200 orders.
Preferred described composite glue powder properties-correcting agent is comprised of following component and corresponding ratio:
Rubber powder: 70～90% weights
Expanding material: 5～15% weights
Auxiliary agent: 0.3～3% weight.
Preferred described expanding material is one or more that are selected from petroleum fractions, coal tar fraction, catalytically cracked oil, deasphalted oil, solvent treatment extraction oil, ethylene bottom oil, Yatall MA and the naphthenic oil.
Further preferred its initial boiling point of expanding material is higher than 200 ℃.
Described auxiliary agent is one or more in benzoyl peroxide, dicumyl peroxide, zinc oxide, the magnesium oxide.
The preparation method of above-mentioned any one composite glue powder properties-correcting agent with the mixture of rubber powder, expanding material, auxiliary agent at normal temperatures, stirred 0.5～5 hour, and preferred 1～3 hour, the product that obtains was composite glue powder properties-correcting agent.
The application method of above-mentioned any one composite glue powder properties-correcting agent, in the bituminous concrete production process, described composite glue powder properties-correcting agent is directly added in the compound mix pot, under 120～220 ℃ temperature condition with building stones, pitch about 20～120 seconds of mix and blend together, preferred 30～90 seconds, namely get the rubber powder modified asphalt compound.Take the integral body of rubber powder modified asphalt compound as the basis, by weight, the amount of described composite glue powder properties-correcting agent is 0.1%～1%, preferred 0.3%～0.8%.Road surface with described rubber powder modified asphalt compound making has the anti-rut of good high temperature and low temperature cracking resistance energy, is a kind of paving material of excellent property.
This composite glue powder properties-correcting agent of the present invention is mainly used in the Road construction field.Composite glue powder properties-correcting agent can directly add in the compound, can be fast and pitch react and reach the remarkable purpose of improving mixture performance, the present invention has namely solved the deficiency that previous dry process exists, the problems that wet processing exists have also been overcome simultaneously, reach the raising mixture performance, significantly reduced again the double effects of energy consumption, environmental contamination reduction.The present invention a kind ofly can rationally utilize the rubber powder resource, significantly improves the effective ways of pavement quality.
Embodiment
To be further described method of the present invention below by embodiment, but not thereby limiting the invention.
Compound evaluation test method is according to The Ministry of Communications of the People's Republic of China, MOC's standard among the embodiment, wherein, Marshall stability (KN) is the index of reflection stability at high temperature of asphalt mixture, and its its high temperature deformation resistance ability of higher explanation of value is stronger, and test method is T0709-2000.Freeze thawing splitting retained strength is the index of estimating stability of asphalt mixture than (%), and the performance of the higher explanation compound anti-water damage of its value is better, and test method is T0729-2000.Low-temperature bending breaking strain (μ ε) is the index of reflection low temperature performance of asphalt, and the higher explanation compound cold resistance of its value can be better, and test method is T0715-1993.。Dynamic stability (inferior/mm) also be the reflection High Temperature Stability of Asphalt Mixture index, its value higher explanation compound high temperature deformation resistance ability stronger, test method is T0719-1993.
Embodiment 1
With the mixture of rubber powder 88 heavy %, expanding material 10 heavy %, auxiliary agent 2 heavy % at normal temperatures, stirred 2 hours, obtain composite glue powder properties-correcting agent 1.Described expanding material is furfural extract oil (initial boiling point＞230 ℃), and described auxiliary agent is dicumyl peroxide.
Embodiment 2
With the mixture of rubber powder 93 heavy %, expanding material 5 heavy %, auxiliary agent 2 heavy % at normal temperatures, stirred 2 hours, obtain composite glue powder properties-correcting agent 2.Described expanding material is furfural extract oil (initial boiling point＞230 ℃), and described auxiliary agent is 2: 1 (mass ratio) mixtures of dicumyl peroxide and zinc oxide.
Embodiment 3
With the mixture of rubber powder 88 heavy %, expanding material 10 heavy %, auxiliary agent 2 heavy % at normal temperatures, stirred 2 hours, obtain composite glue powder properties-correcting agent 3.Described expanding material is furfural extract oil (initial boiling point＞230 ℃), and described auxiliary agent is benzoyl peroxide and magnesian 1: 1 (mass ratio) mixture.
Comparative Examples 1
In the bituminous concrete production process, building stones under 160 ℃ temperature condition (AC-20 limestone building stones) and pitch (No. 90 straight-run pitches) is mix and blend 60 seconds together, obtain asphalt, Mixture Ratio and results of performance analysis thereof see Table 1.Do not add any rubber powder in this Comparative Examples.The compound index is as follows: Marshall stability: 13.1 (KN), and freeze thawing splitting retained strength ratio: 88.6 (%), low-temperature bending breaking strain: 2162 (μ ε), dynamic stability: 1806 (inferior/mm).
Comparative Examples 2
In the bituminous concrete production process, unmodified common rubber powder is directly added in the compound mix pot, under 190 ℃ temperature condition with building stones (AC-20 limestone building stones), pitch (No. 90 straight-run pitches) mix and blend 60 seconds together, obtain asphalt, Mixture Ratio and results of performance analysis thereof see Table 1.The compound index is as follows: Marshall stability: 13.7 (KN), and freeze thawing splitting retained strength ratio: 90.1 (%), low-temperature bending breaking strain: 2447 (μ ε), dynamic stability: 3231 (inferior/mm).
Comparative Examples 3
In the bituminous concrete production process, building stones under 190 ℃ temperature condition (AC-20 limestone building stones) and 15% rubber powder modified asphalt be mix and blend 60 seconds together, obtains asphalt, and Mixture Ratio and results of performance analysis thereof see Table 1.The rubber powder of this Comparative Examples has been added in the pitch, belongs to the wet method rubber powder modified asphalt.The compound index is as follows: Marshall stability: 14.3 (KN), and freeze thawing splitting retained strength ratio: 90.2 (%), low-temperature bending breaking strain: 2749 (μ ε), dynamic stability: 3516 (inferior/mm).
By table 3 data as seen: the performance of Comparative Examples 1 that does not add rubber powder is the poorest, adopts wet method rubber powder modified asphalt Comparative Examples 3 performances best, adopts Comparative Examples 2 performances of dry method placed in the middle.
Table 1
Embodiment 4
In the bituminous concrete production process, directly add the composite glue powder properties-correcting agent 1 of embodiment 1 gained in the compound mix pot, under 190 ℃ temperature condition with building stones (AC-20 limestone building stones), pitch (No. 90 straight-run pitches) mix and blend 60 seconds together, obtain the rubber powder modified asphalt compound, Mixture Ratio and results of performance analysis thereof see Table 2.The compound index is as follows: Marshall stability: 14.2 (KN), and freeze thawing splitting retained strength ratio: 90.3 (%), low-temperature bending breaking strain: 2660 (μ ε), dynamic stability: 3675 (inferior/mm).Data presentation: the compound that its high temperature performance of compound that adds embodiment 1 gained composite glue powder properties-correcting agent significantly is better than not adding rubber powder (Comparative Examples 1) and adds unmodified common rubber powder (Comparative Examples 2), and compare with wet method rubber powder modified asphalt compound (Comparative Examples 3), its low-temperature performance is slightly poor, and high-temperature behavior is dominant.
Embodiment 5
In the bituminous concrete production process, directly add the composite glue powder properties-correcting agent 2 of embodiment 2 gained in the compound mix pot, under 190 ℃ temperature condition with building stones (AC-20 limestone building stones), pitch (No. 90 straight-run pitches) mix and blend 60 seconds together, obtain the rubber powder modified asphalt compound, Mixture Ratio and results of performance analysis thereof see Table 2.The compound index is as follows: Marshall stability: 14.0 (KN), and freeze thawing splitting retained strength ratio: 90.1 (%), low-temperature bending breaking strain: 2546 (μ ε), dynamic stability: 3756 (inferior/mm).Similar to Example 4 with the comparative result of Comparative Examples.
Embodiment 6
In the bituminous concrete production process, directly add the composite glue powder properties-correcting agent 3 of embodiment 3 gained in the compound mix pot, under 190 ℃ temperature condition with building stones (AC-20 limestone building stones), pitch (No. 90 straight-run pitches) mix and blend 60 seconds together, obtain the rubber powder modified asphalt compound, Mixture Ratio and results of performance analysis thereof see Table 2.The compound index is as follows: Marshall stability: 14.0 (KN), and freeze thawing splitting retained strength ratio: 90.0 (%), low-temperature bending breaking strain: 2612 (μ ε), dynamic stability: 3653 (inferior/mm).Similar to Example 4 with the comparative result of Comparative Examples.
Table 2
Embodiment 7
In the bituminous concrete production process, directly add the composite glue powder properties-correcting agent 1 of embodiment 1 gained in the compound mix pot, under 190 ℃ temperature condition with building stones (AC-20 limestone building stones), pitch (No. 70 straight-run pitches) mix and blend 60 seconds together, obtain the rubber powder modified asphalt compound, Mixture Ratio and results of performance analysis thereof see Table 3.The compound index is as follows: Marshall stability: 14.6 (KN), and freeze thawing splitting retained strength ratio: 90.5 (%), low-temperature bending breaking strain: 2453 (μ ε), dynamic stability: 3860 (inferior/mm).Similar to Example 4 with the comparative result of Comparative Examples, and high-temperature behavior is more outstanding.
Embodiment 8
In the bituminous concrete production process, directly add the composite glue powder properties-correcting agent 2 of embodiment 2 gained in the compound mix pot, under 190 ℃ temperature condition with building stones (AC-20 limestone building stones), pitch (No. 90 straight-run pitches) mix and blend 60 seconds together, obtain the rubber powder modified asphalt compound, Mixture Ratio and results of performance analysis thereof are shown in Table 3.The compound index is as follows: Marshall stability: 13.8 (KN), and freeze thawing splitting retained strength ratio: 90.2 (%), low-temperature bending breaking strain: 2523 (μ ε), dynamic stability: 3505 (inferior/mm).Data presentation: after the composite glue powder dosage reduced, the compound index descended to some extent, but also significantly better than the Comparative Examples 1 that does not add rubber powder.
Embodiment 9
In the bituminous concrete production process, directly add the composite glue powder properties-correcting agent 3 of embodiment 3 gained in the compound mix pot, under 190 ℃ temperature condition with building stones (AC-20 limestone building stones), pitch (No. 90 straight-run pitches) mix and blend 60 seconds together, obtain the rubber powder modified asphalt compound, Mixture Ratio and results of performance analysis thereof are shown in Table 3.The compound index is as follows: Marshall stability: 14.9 (KN), and freeze thawing splitting retained strength ratio: 90.7 (%), low-temperature bending breaking strain: 2849 (μ ε), dynamic stability: 3986 (inferior/mm).Data presentation: after the composite glue powder dosage increased, the compound index significantly improved, and is much better than Comparative Examples 1,2,3.
Table 3
As seen adopt the prepared rubber powder modified asphalt compound of the present invention by above-described embodiment and Comparative Examples, its performance obviously is better than non-modifying asphalt, under equal rubber powder volume, the rubber powder modified asphalt compound that also is better than common rubber powder dry process, and compare with the rubber powder modified asphalt compound of wet method preparation, the compound low-temperature performance of the present invention's preparation is slightly poor, but high-temperature behavior is dominant.If consider from the angle of energy-conserving and environment-protective, adopt composite glue powder of the present invention and compare with the wet method rubber powder modified asphalt, have clear superiority.This shows that the present invention a kind ofly can rationally utilize the rubber powder resource, significantly improve pavement quality and the outstanding effective ways that embody environmental protection.
Claims (10)
1. composite glue powder properties-correcting agent is characterized in that this composite glue powder properties-correcting agent is comprised of following component and corresponding ratio:
Rubber powder: 65～98.9% weights
Expanding material: 1～30% weight
Auxiliary agent: 0.1～5% weight,
Described rubber powder refers to waste-tyre rubber-powder;
Described expanding material refers to oily substance;
Described auxiliary agent is selected from one or more in superoxide, the metal oxide.
2. according to the properties-correcting agent of composite glue powder described in the claim 1, it is characterized in that described composite glue powder properties-correcting agent is comprised of following component and corresponding ratio:
Rubber powder: 70～90% weights
Expanding material: 5～15% weights
Auxiliary agent: 0.3～3% weight.
3. according to the properties-correcting agent of composite glue powder described in the claim 1, it is characterized in that described rubber powder, is to be made through pulverizing by one or more junked tires that consist of in natural rubber, styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber and the polyisoprene rubber.
4. according to the properties-correcting agent of composite glue powder described in the claim 1, it is characterized in that the granularity of described rubber powder is between 20～200 orders.
5. according to the properties-correcting agent of composite glue powder described in the claim 1, it is characterized in that described expanding material is one or more that are selected from petroleum fractions, coal tar fraction, catalytically cracked oil, deasphalted oil, solvent treatment extraction oil, ethylene bottom oil, Yatall MA and the naphthenic oil.
6. according to the properties-correcting agent of composite glue powder described in the claim 5, it is characterized in that the initial boiling point of described expanding material is higher than 200 ℃.
7. according to the properties-correcting agent of composite glue powder described in the claim 1, it is characterized in that described auxiliary agent is one or more in benzoyl peroxide, dicumyl peroxide, zinc oxide, the magnesium oxide.
8. the preparation method of any one composite glue powder properties-correcting agent among the claim 1-7 is characterized in that stirring 0.5～5 hour with the mixture of rubber powder, expanding material, auxiliary agent at normal temperatures, and the product that obtains is composite glue powder properties-correcting agent.
9. the application method of any one composite glue powder properties-correcting agent among the claim 1-7, it is characterized in that in the bituminous concrete production process, described composite glue powder properties-correcting agent is directly added in the compound mix pot, under 120～220 ℃ temperature condition, with building stones, pitch about 20～120 seconds of mix and blend together, namely get the rubber powder modified asphalt compound; Take the integral body of rubber powder modified asphalt compound as the basis, by weight, the amount of described composite glue powder properties-correcting agent is 0.1%～1%.
10. according to application method claimed in claim 9, it is characterized in that described composite glue powder properties-correcting agent is in compound mix pot, with building stones, pitch about 30～90 seconds of mix and blend together, take the integral body of rubber powder modified asphalt compound as the basis, by weight, the amount of described composite glue powder properties-correcting agent is 0.3%～0.8%.
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| CN103601407A (en) * | 2013-11-19 | 2014-02-26 | 青岛广联达精密机械有限公司 | Rut-resistant modifying agent for concrete |
| CN103709767A (en) * | 2013-12-13 | 2014-04-09 | 许昌金欧特沥青股份有限公司 | Mixing-type rubber powder modified emulsified asphalt and preparation method thereof |
| CN103709769A (en) * | 2013-12-25 | 2014-04-09 | 济南开发区星火科学技术研究院 | Method of preparing modified road asphalt by utilizing waste tyres |
| WO2014138788A1 (en) * | 2013-03-15 | 2014-09-18 | Close The Loop Technologies Pty Ltd | Ground tire rubber additive and asphalt including same |
| CN105419360A (en) * | 2015-12-28 | 2016-03-23 | 重庆交通大学 | Low-temperature anti-cracking rubber asphalt |
| CN107954635A (en) * | 2018-01-04 | 2018-04-24 | 山东科达基建有限公司 | Asphalt concrete modifying agent |
| CN114426412A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Asphalt pavement sealing material and preparation method and application thereof |
| CN115461400A (en) * | 2020-04-20 | 2022-12-09 | 安德烈·列昂尼多维奇·沃罗贝夫 | Low temperature process for making modified crumb rubber |
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| CN107954635A (en) * | 2018-01-04 | 2018-04-24 | 山东科达基建有限公司 | Asphalt concrete modifying agent |
| CN115461400A (en) * | 2020-04-20 | 2022-12-09 | 安德烈·列昂尼多维奇·沃罗贝夫 | Low temperature process for making modified crumb rubber |
| CN114426412A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Asphalt pavement sealing material and preparation method and application thereof |
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Application publication date: 20130306 |