CN101173104A - Method for producing damping porous denoise tunnel asphalt covering material - Google Patents
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Abstract
The invention relates to a preparation method of tunnel asphalt surface coat material, in particular to the preparation method of damping multi-hole noise eliminating tunnel asphalt surface coat material. The preparation method is characterized in that the invention comprises the steps as follows: (1) modified asphalt with high viscosity and high elasticity is prepared by the components with a weight ratio that modifier SBS: activating rubber powder: thickening compatibilizer: antioxidant: stabilizing agent is equal to 100:6.0 to 18.3:20.2 to 45.7:1.2 to 3.7:0.2 to1.4:0.4 to 1.9; the modified asphalt with high viscosity and high elasticity is obtained; (2) a flame retardant is added in the modified asphalt with high viscosity and high elasticity, the modified asphalt with high viscosity and high elasticity is heated to melt and the flame retardant is added, after being mixed for 3 to 9 minutes and being reversed in stillness for 15 to 30 minutes in 150 to 170 DEG C, the flame retarding modified asphalt with high viscosity and high elasticity is produced; (3) mineral aggregate: the flame retarding modified asphalt with high viscosity and high elasticity: fiber stabilizer being equal to the weight ratio of 100 : 36 to 5.2 : 0.1 to 0.4 is chosen to produce the damping multi-hole noise eliminating tunnel asphalt surface coat material. The invention has the functions of reducing noise, retarding flame and resisting slip.
Description
Technical field
The invention belongs to the Materials Science and Engineering field, be specifically related to a kind of preparation method of tunnel asphalt surface material.
Technical background
The noise in tunnel is the technical problem of a common concern, noise reduction road surface research at present focuses mostly in utilizing porous asphalt mixture, as the OGFC asphalt, absorption of noise is also eliminated the tire pumping effect, but the sound absorption of porous material is limited, noise reduction is 2～4dB only generally, can't solve the tunnel noise problem at all at all.Damping mainly is to add the material that some increase elasticity or have spacial framework in the pitch, improves the damping characteristic of material, the vibratory noise of tire even car body during the elimination vehicle travels.
Present large-scale vcehicular tunnel has enclosed space, and it is poor to ventilate, and the characteristics that noise is big consider that for fire safety large-scale vcehicular tunnel is very careful to the use of bituminous material.In than long tunnel, use the part organic fire-retardant, as brominated flame retardant, the road surface pattern mostly is AC series bituminous concrete, but this flame-retardant pitch concrete road surface is the burning of liquid-phase combustion thing such as uncontrollable gasoline at all, fire to the tunnel vehicle does not have control action kou, studies show that under the condition of high temperature of gasoline perfect combustion, the limiting oxygen index(LOI) of flame-retardant pitch will reduce significantly, and with respect to combustionmaterials such as gasoline, the partial combustion of bituminous pavement is just insignificant at all, so must effectively control the flammable liquid scale of constructions such as participating in incendiary gasoline in the tunnel.
Summary of the invention
The object of the present invention is to provide a kind of preparation method with damping porous denoise tunnel asphalt covering material of noise reduction, fire-retardant, antiskid function.
To achieve these goals, technical scheme of the present invention is: a kind of preparation method of damping porous denoise tunnel asphalt covering material is characterized in that it comprises the steps:
1) preparation of high viscosity high elasticity modifying asphalt: the mass ratio by each component is a matrix pitch: properties-correcting agent SBS: activating rubber powder: tackify expanding material: oxidation inhibitor: stablizer=100: 6.0～18.3: 20.2～45.7: 1.2～3.7: 0.2～1.4: 0.4～1.9, choose matrix pitch, properties-correcting agent SBS, activating rubber powder, tackify expanding material, oxidation inhibitor and stablizer, standby;
At first matrix pitch and the properties-correcting agent SBS with fusing drops in the colloidal mill jointly and mills, through once adding the tackify expanding material after the circulation, oxidation inhibitor and stablizer, 3～6 circulations continue to mill, 150～180 ℃ of temperature controls, asphalt mixture after will milling again is by the emulsify at a high speed shears, adjust rotating speed 3000～7000 commentaries on classics/min, slowly add activating rubber powder, after treating all to add, continue high speed shear 15～30min, controlled temperature is 160～180 ℃ during shearing, and the asphalt mixture after shearing after abundant swelling under 140～170 ℃, is promptly made the high viscosity high elasticity modifying asphalt;
2) in the high viscosity high elasticity modifying asphalt, add fire retardant, the mass ratio of high viscosity high elasticity modifying asphalt and fire retardant is 100: 8～22, high viscosity high elasticity modifying asphalt heat fused is added fire retardant, stir 3～9min, 150～170 ℃ leave standstill 15～30min, promptly get fire-retardant high viscosity high elasticity modifying asphalt;
3) be mineral aggregate by mass ratio: fire-retardant high viscosity high elasticity modifying asphalt: fiber stabilizer=100: 3.6～5.2: 0.1～0.4, choose mineral aggregate, fire-retardant high viscosity high elasticity modifying asphalt, fiber stabilizer, standby; Described mineral aggregate is made up of coarse aggregate, fine aggregate, filler and damping material, and mass ratio is a coarse aggregate: fine aggregate: filler: damping material=100: 11～18: 1～4: 2～6;
Adopt the intermittent type mixing apparatus, at first coarse aggregate, fine aggregate and fiber stabilizer are mixed and stirred 10～20s, spray into fire-retardant high viscosity high elasticity modifying asphalt then and mix and stir 15～30s, spray into filler and damping material simultaneously from two feed bins respectively, mix and stir 10～30s, mix and stir 170～185 ℃ of temperature, drop temperature is not less than 160 ℃, gets damping porous denoise tunnel asphalt covering material.
Described matrix pitch is selected bitumen A H-70 or bitumen A H-90 for use.
Described properties-correcting agent SBS is a styrene-butadiene-styrene block copolymer, selects the styrene-butadiene-styrene block copolymer of star-like or line style for use.
Described tackify expanding material is selected terpine resin, petroleum resin or Gum Rosin for use.
Described oxidation inhibitor is selected plumbous class, zinc class, calcium salt or amine for use.
Described stablizer is selected for use polyamide-based or sulphur class stablizer.
Described fire retardant is selected halogenated flame retardant, phosphorus flame retardant or inorganic combustion inhibitor for use.
Described coarse aggregate is selected basalt or diabase for use, and nominal maximum aggregate size is 16mm (9.5～16mm).
Described fine aggregate is selected basalt or diabase for use, nominal maximum aggregate size 4.75mm.
Described filler is selected the limestone breeze for use.
Described damping material is selected vermiculite power, swelling perlite powder or natural zeolite powder for use.
It is big that the present invention uses for reference the porous asphalt mixture gap rate, drainage performance is good, the characteristics that sound absorption coefficient is big, with big space asphalt is matrix, and preparation has the bituminous material of high viscosity high elasticity, and utilizes fire retardant that pitch is carried out flame-retarded technology and handle, in the preparation process of asphalt, add the damping material, make have high damping, big gap structure, and the tunnel asphalt surface material that tunnel fire hazard is had control action kou.
The present invention prepares a kind of collection noise reduction, fire-retardant, the multiple function of antiskid is in one, the tunnel asphalt surface material that the structure use properties is good, this surface material adopts open gradation porous design philosophy, voidage reaches 16～21%, vesicular structure can be eliminated the pumping effect of vehicle in travelling effectively, and can absorption of noise, reduce the tunnel noise greatly, porous pavement structure design simultaneously significantly strengthens the construction depth of surface layer, and cling property obviously improves, in addition, this porous pavement structure can effectively absorb and arrange the liquid combustiblematerials of ease road table in tunnel fire hazard, alleviate the loss of life and personal injury and the financial loss of tunnel fire hazard.Added a large amount of polar rubber powder in the modified asphalt material of high viscosity high elasticity, has elasticity preferably, elastomeric pitch can strengthen the damping action of ground surface material effectively, eliminate Vehicular vibration, reduce road rumble, simultaneously because the adding of a large amount of properties-correcting agent SBS and tackify expanding material, 60 ℃ of viscosity of bituminous can reach 80000Pas, full-bodied bituminous material is the indispensable material of preparation porous noise reduction ground surface material, the adding of flame retardant materials is increased to more than 26% the bituminous oxygen index, becomes firing-difficult matter matter, and flame retardant rating reaches the UL-94V-1 level, prevent the burning of road surface fire medium pitch material, reduce disaster hidden-trouble.In the process of preparation asphalt, add the damping material that has space three-dimensional frame shape structure in a large number and substitute filler, not only self can damping noise-reducing, and its three-dimensional frame shape structure can increase the consumption of bituminous material, the structure durability of strongthener and noise reduction, space framework can also improve the action effect of fire retardant greatly in tunnel fire hazard.
Adopt the damping porous denoise tunnel asphalt covering material of the present invention's preparation, sound absorption coefficient is more than 0.5, the general bituminous concrete pavement of noise level reduces more than the 4dBA, 60 ℃ of viscosity of bituminous material can reach 80000Pas, and fire-retardant limiting oxygen index(LOI) is more than 26%, the dynamic stability of asphalt 7000 times/more than the mm, general bituminous pavement is the noise reduction excellence not only, pavement performance is good, and self has anti-flaming function, is suitable for large-scale vcehicular tunnel road surface more and uses.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1:
A kind of preparation method of damping porous denoise tunnel asphalt covering material, it comprises the steps:
1) preparation of high viscosity high elasticity modifying asphalt: the high viscosity high elasticity modifying asphalt is made up of matrix pitch, properties-correcting agent SBS, activating rubber powder, tackify expanding material, oxidation inhibitor and stablizer, mass ratio by each component is a matrix pitch: properties-correcting agent SBS: activating rubber powder: tackify expanding material: oxidation inhibitor: stablizer=100: 6.0: 20.2: 1.2: 0.2: 0.4, choose matrix pitch, properties-correcting agent SBS, activating rubber powder, tackify expanding material, oxidation inhibitor and stablizer, standby;
At first matrix pitch and the properties-correcting agent SBS with fusing drops in the colloidal mill jointly and mills, through once adding the tackify expanding material after the circulation, oxidation inhibitor and stablizer, continue to mill and circulate for 3 times, 150 ℃ of temperature controls, asphalt mixture after will milling again is by the emulsify at a high speed shears, adjust rotating speed 3000 commentaries on classics/min, slowly add activating rubber powder, after treating all to add, continue high speed shear 15min, controlled temperature is 160 ℃ during shearing, and the asphalt mixture after shearing after abundant swelling under 140 ℃, is promptly made the high viscosity high elasticity modifying asphalt and (has high viscosity, snappiness);
Described matrix pitch is selected bitumen A H-70 for use;
Described properties-correcting agent SBS is a styrene-butadiene-styrene block copolymer, selects star-like styrene-butadiene-styrene block copolymer for use;
Described tackify expanding material is selected terpine resin for use;
Described oxidation inhibitor is selected plumbous class for use;
Described stablizer is selected for use polyamide-based;
2) in the high viscosity high elasticity modifying asphalt, add fire retardant, the mass ratio of high viscosity high elasticity modifying asphalt and fire retardant is 100: 8, and high viscosity high elasticity modifying asphalt heat fused is added fire retardant, stirs 3min, 150 ℃ leave standstill 15min, promptly get fire-retardant high viscosity high elasticity modifying asphalt;
Described fire retardant is selected halogenated flame retardant (as decabromodiphenyl oxide) for use;
3) damping porous denoise tunnel asphalt covering material is made up of mineral aggregate, fire-retardant high viscosity high elasticity modifying asphalt and fiber stabilizer, by mass ratio is mineral aggregate: fire-retardant high viscosity high elasticity modifying asphalt: fiber stabilizer=100: 3.6: 0.1, choose mineral aggregate, fire-retardant high viscosity high elasticity modifying asphalt, fiber stabilizer, standby; Described mineral aggregate is made up of coarse aggregate, fine aggregate, filler and damping material, and mass ratio is a coarse aggregate: fine aggregate: filler: damping material=100: 11: 1: 2;
Adopt the intermittent type mixing apparatus, at first coarse aggregate, fine aggregate and fiber stabilizer are mixed and stirred 10s, spray into fire-retardant high viscosity high elasticity modifying asphalt then and mix and stir 15s, spray into filler and damping material simultaneously from two feed bins respectively, mix and stir 10s, mix and stir 170 ℃ of temperature, drop temperature is not less than 160 ℃, gets damping porous denoise tunnel asphalt covering material.
Described coarse aggregate is selected basalt for use, nominal maximum aggregate size 9.5mm;
Described fine aggregate is selected basalt for use, nominal maximum aggregate size 4.75mm;
Described filler is selected the limestone breeze for use;
Described damping material is selected swelling perlite powder for use.
Embodiment 2:
A kind of preparation method of damping porous denoise tunnel asphalt covering material, it comprises the steps:
1) preparation of high viscosity high elasticity modifying asphalt: the high viscosity high elasticity modifying asphalt is made up of matrix pitch, properties-correcting agent SBS, activating rubber powder, tackify expanding material, oxidation inhibitor and stablizer, mass ratio by each component is a matrix pitch: properties-correcting agent SBS: activating rubber powder: tackify expanding material: oxidation inhibitor: stablizer=100: 12.4: 29.1: 2.6: 0.7: 0.8, choose matrix pitch, properties-correcting agent SBS, activating rubber powder, tackify expanding material, oxidation inhibitor and stablizer, standby;
At first matrix pitch and the properties-correcting agent SBS with fusing drops in the colloidal mill jointly and mills, through once adding the tackify expanding material after the circulation, oxidation inhibitor and stablizer, continue to mill and circulate for 4 times, 170 ℃ of temperature controls, asphalt mixture after will milling again is by the emulsify at a high speed shears, adjust rotating speed 4000 commentaries on classics/min, slowly add activating rubber powder, after treating all to add, continue high speed shear 20min, controlled temperature is 175 ℃ during shearing, and the asphalt mixture after shearing after abundant swelling under 160 ℃, is promptly made the high viscosity high elasticity modifying asphalt and (has high viscosity, snappiness);
Described matrix pitch is selected bitumen A H-70 for use;
Described properties-correcting agent SBS is a styrene-butadiene-styrene block copolymer, selects star-like styrene-butadiene-styrene block copolymer for use;
Described tackify expanding material is selected petroleum resin (C 9 petroleum resin) for use;
Described oxidation inhibitor is selected amine for use;
Described stablizer is selected sulphur class stablizer for use;
2) in the high viscosity high elasticity modifying asphalt, add fire retardant, the mass ratio of high viscosity high elasticity modifying asphalt and fire retardant is 100: 11, and high viscosity high elasticity modifying asphalt heat fused is added fire retardant, stirs 6min, 165 ℃ leave standstill 20min, promptly get fire-retardant high viscosity high elasticity modifying asphalt;
Described fire retardant is selected phosphorus flame retardant (as ammonium polyphosphate) for use;
3) damping porous denoise tunnel asphalt covering material is made up of mineral aggregate, fire-retardant high viscosity high elasticity modifying asphalt and fiber stabilizer, by mass ratio is mineral aggregate: fire-retardant high viscosity high elasticity modifying asphalt: fiber stabilizer=100: 4.6: 0.3, choose mineral aggregate, fire-retardant high viscosity high elasticity modifying asphalt, fiber stabilizer, standby; Described mineral aggregate is made up of coarse aggregate, fine aggregate, filler and damping material, and mass ratio is a coarse aggregate: fine aggregate: filler: damping material=100: 12: 2: 3;
Adopt the intermittent type mixing apparatus, at first coarse aggregate, fine aggregate and fiber stabilizer are mixed and stirred 15s, spray into fire-retardant high viscosity high elasticity modifying asphalt then and mix and stir 20s, spray into filler and damping material simultaneously from two feed bins respectively, mix and stir 15s, mix and stir 180 ℃ of temperature, drop temperature is not less than 160 ℃, gets damping porous denoise tunnel asphalt covering material.
Described coarse aggregate is selected diabase for use, and nominal maximum aggregate size is 16mm;
Described fine aggregate is selected diabase for use, nominal maximum aggregate size 4.75mm;
Described filler is selected the limestone breeze for use;
Described damping material is selected vermiculite power for use.
The damping porous denoise tunnel asphalt covering material of preparation, sound absorption coefficient reaches 0.624, and the general bituminous concrete pavement of noise level reduces 5dBA, and 60 ℃ of viscosity of bituminous material reach 93800Pas, fire-retardant limiting oxygen index(LOI) 27.2%, the dynamic stability of asphalt reaches 7875 times/mm.
Embodiment 3:
A kind of preparation method of damping porous denoise tunnel asphalt covering material, it comprises the steps:
1) preparation of high viscosity high elasticity modifying asphalt: the high viscosity high elasticity modifying asphalt is made up of matrix pitch, properties-correcting agent SBS, activating rubber powder, tackify expanding material, oxidation inhibitor and stablizer, mass ratio by each component is a matrix pitch: properties-correcting agent SBS: activating rubber powder: tackify expanding material: oxidation inhibitor: stablizer=100: 18.3: 45.7: 3.7: 1.4: 1.9, choose matrix pitch, properties-correcting agent SBS, activating rubber powder, tackify expanding material, oxidation inhibitor and stablizer, standby;
At first matrix pitch and the properties-correcting agent SBS with fusing drops in the colloidal mill jointly and mills, through once adding the tackify expanding material after the circulation, oxidation inhibitor and stablizer, continue to mill and circulate for 6 times, 180 ℃ of temperature controls, asphalt mixture after will milling again is by the emulsify at a high speed shears, adjust rotating speed 7000 commentaries on classics/min, slowly add activating rubber powder, after treating all to add, continue high speed shear 30min, controlled temperature is 180 ℃ during shearing, and the asphalt mixture after shearing after abundant swelling under 170 ℃, is promptly made the high viscosity high elasticity modifying asphalt and (has high viscosity, snappiness);
Described matrix pitch is selected bitumen A H-90 for use;
Described properties-correcting agent SBS is a styrene-butadiene-styrene block copolymer, selects the styrene-butadiene-styrene block copolymer of line style for use;
Described tackify expanding material is selected Gum Rosin for use;
Described oxidation inhibitor is selected zinc class or calcium salt for use;
Described stablizer is selected sulphur class stablizer for use;
2) in the high viscosity high elasticity modifying asphalt, add fire retardant, the mass ratio of high viscosity high elasticity modifying asphalt and fire retardant is 100: 22, and high viscosity high elasticity modifying asphalt heat fused is added fire retardant, stirs 9min, 170 ℃ leave standstill 30min, promptly get fire-retardant high viscosity high elasticity modifying asphalt;
Described fire retardant is selected inorganic combustion inhibitor (as magnesium hydroxide) for use;
3) damping porous denoise tunnel asphalt covering material is made up of mineral aggregate, fire-retardant high viscosity high elasticity modifying asphalt and fiber stabilizer, by mass ratio is mineral aggregate: fire-retardant high viscosity high elasticity modifying asphalt: fiber stabilizer=100: 5.2: 0.4, choose mineral aggregate, fire-retardant high viscosity high elasticity modifying asphalt, fiber stabilizer, standby; Described mineral aggregate is made up of coarse aggregate, fine aggregate, filler and damping material, and mass ratio is a coarse aggregate: fine aggregate: filler: damping material=100: 18: 4: 6;
Adopt the intermittent type mixing apparatus, at first coarse aggregate, fine aggregate and fiber stabilizer are mixed and stirred 20s, spray into fire-retardant high viscosity high elasticity modifying asphalt then and mix and stir 30s, spray into filler and damping material simultaneously from two feed bins respectively, mix and stir 30s, mix and stir 185 ℃ of temperature, drop temperature is not less than 160 ℃, gets damping porous denoise tunnel asphalt covering material.
Described coarse aggregate is selected diabase for use, and nominal maximum aggregate size is 16mm;
Described fine aggregate is selected basalt for use, nominal maximum aggregate size 4.75mm;
Described filler is selected the limestone breeze for use;
Described damping material is selected vermiculite power, swelling perlite powder or natural zeolite powder for use.
Claims (4)
1. the preparation method of a damping porous denoise tunnel asphalt covering material is characterized in that it comprises the steps:
1) preparation of high viscosity high elasticity modifying asphalt: the mass ratio by each component is a matrix pitch: properties-correcting agent SBS: activating rubber powder: tackify expanding material: oxidation inhibitor: stablizer=100: 6.0～18.3: 20.2～45.7: 1.2～3.7: 0.2～1.4: 0.4～1.9, choose matrix pitch, properties-correcting agent SBS, activating rubber powder, tackify expanding material, oxidation inhibitor and stablizer, standby;
At first matrix pitch and the properties-correcting agent SBS with fusing drops in the colloidal mill jointly and mills, through once adding the tackify expanding material after the circulation, oxidation inhibitor and stablizer, 3～6 circulations continue to mill, 150～180 ℃ of temperature controls, asphalt mixture after will milling again is by the emulsify at a high speed shears, adjust rotating speed 3000～7000 commentaries on classics/min, slowly add activating rubber powder, after treating all to add, continue high speed shear 15～30min, controlled temperature is 160～180 ℃ during shearing, and the asphalt mixture after shearing after abundant swelling under 140～170 ℃, is promptly made the high viscosity high elasticity modifying asphalt;
2) in the high viscosity high elasticity modifying asphalt, add fire retardant, the mass ratio of high viscosity high elasticity modifying asphalt and fire retardant is 100: 8～22, high viscosity high elasticity modifying asphalt heat fused is added fire retardant, stir 3～9min, 150～170 ℃ leave standstill 15～30min, promptly get fire-retardant high viscosity high elasticity modifying asphalt;
3) be mineral aggregate by mass ratio: fire-retardant high viscosity high elasticity modifying asphalt: fiber stabilizer=100: 3.6～5.2: 0.1～0.4, choose mineral aggregate, fire-retardant high viscosity high elasticity modifying asphalt, fiber stabilizer, standby; Described mineral aggregate is made up of coarse aggregate, fine aggregate, filler and damping material, and mass ratio is a coarse aggregate: fine aggregate: filler: damping material=100: 11～18: 1～4: 2～6;
Adopt the intermittent type mixing apparatus, at first coarse aggregate, fine aggregate and fiber stabilizer are mixed and stirred 10～20s, spray into fire-retardant high viscosity high elasticity modifying asphalt then and mix and stir 15～30s, spray into filler and damping material simultaneously from two feed bins respectively, mix and stir 10～30s, mix and stir 170～185 ℃ of temperature, drop temperature is not less than 160 ℃, gets damping porous denoise tunnel asphalt covering material.
2. the preparation method of a kind of damping porous denoise tunnel asphalt covering material according to claim 1, it is characterized in that: described tackify expanding material is selected terpine resin, petroleum resin or Gum Rosin for use.
3. the preparation method of a kind of damping porous denoise tunnel asphalt covering material according to claim 1, it is characterized in that: described fire retardant is selected halogenated flame retardant, phosphorus flame retardant or inorganic combustion inhibitor for use.
4. the preparation method of a kind of damping porous denoise tunnel asphalt covering material according to claim 1, it is characterized in that: described damping material is selected vermiculite power, swelling perlite powder or natural zeolite powder for use.
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| CN101654561B (en) * | 2008-08-22 | 2011-11-02 | 株洲时代新材料科技股份有限公司 | Modified asphalt hot-melt damping material for vehicles and preparation method and construction method thereof |
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| CN101892622A (en) * | 2010-06-28 | 2010-11-24 | 宁波大学 | Modified emulsified asphalt slurry seal and preparation method thereof |
| CN101892622B (en) * | 2010-06-28 | 2011-12-14 | 宁波大学 | preparation method of modified emulsified asphalt slurry seal |
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| CN102863182B (en) * | 2012-08-18 | 2014-01-22 | 北京市政路桥建材集团有限公司 | Ultrathin rubber asphalt wearing layer mixing material for preventive conservation |
| CN103214205A (en) * | 2013-04-07 | 2013-07-24 | 浙江大学宁波理工学院 | Chemical erosion-resistant additive of bituminous mixture |
| CN103214205B (en) * | 2013-04-07 | 2014-09-17 | 浙江大学宁波理工学院 | Chemical erosion-resistant additive of bituminous mixture |
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| CN106633961A (en) * | 2016-12-19 | 2017-05-10 | 长安大学 | High-viscosity modified asphalt material and preparation method thereof |
| CN107227028A (en) * | 2017-07-19 | 2017-10-03 | 芜湖凯奥尔环保科技有限公司 | A kind of stalk fibre is modified the preparation method of rhamnolipid emulsified asphalt |
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| CN109735127A (en) * | 2019-02-20 | 2019-05-10 | 翟治国 | A kind of preparation method of high frequency noise reduction pitch |
| CN109943085A (en) * | 2019-03-20 | 2019-06-28 | 广西交通科学研究院有限公司 | A kind of composite modified high-viscosity asphalt of noise reduction drainage pavement rubber powder and preparation method |
| CN110818322A (en) * | 2019-09-30 | 2020-02-21 | 东珠生态环保股份有限公司 | Low-heat-capacity anti-cracking municipal pavement asphalt mixing material |
| CN110818322B (en) * | 2019-09-30 | 2022-04-12 | 东珠生态环保股份有限公司 | Low-heat-capacity anti-cracking municipal pavement asphalt mixing material |
| CN111056770A (en) * | 2019-12-31 | 2020-04-24 | 江苏宝利路面材料技术有限公司 | Preparation method of asphalt mixture for low-temperature paved and high-weather-resistance drainage pavement |
| CN111153634A (en) * | 2020-01-09 | 2020-05-15 | 江苏中新苏通市政工程有限公司 | Noise-reducing rubber modified asphalt concrete and preparation method thereof |
| CN111153634B (en) * | 2020-01-09 | 2022-03-18 | 江苏中新苏通市政工程有限公司 | Noise-reducing rubber modified asphalt concrete and preparation method thereof |
| CN114806194A (en) * | 2022-03-17 | 2022-07-29 | 山东汇达新型建筑材料有限公司 | Low-temperature high-viscosity modified asphalt and processing technology thereof |
| CN115010406A (en) * | 2022-06-01 | 2022-09-06 | 上海市城市建设设计研究总院（集团）有限公司 | High-damping high-sound-absorption noise-reduction asphalt mixture and preparation method thereof |
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