CN106189291A - Iran's natural rock asphalt modified pitch and preparation method thereof - Google Patents
Iran's natural rock asphalt modified pitch and preparation method thereof Download PDFInfo
- Publication number
- CN106189291A CN106189291A CN201610560542.3A CN201610560542A CN106189291A CN 106189291 A CN106189291 A CN 106189291A CN 201610560542 A CN201610560542 A CN 201610560542A CN 106189291 A CN106189291 A CN 106189291A
- Authority
- CN
- China
- Prior art keywords
- iran
- parts
- natural rock
- rock asphalt
- modified pitch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention belongs to new material technology field, be specifically related to a kind of Iran natural rock asphalt modified pitch and preparation method thereof.There is blocking production equipment expensive, easy for processes of rock asphalt modified asphalt in prior art, be difficult to the defects such as storage, the present invention provides a kind of Iran natural rock asphalt modified pitch and preparation method thereof.This Iran's natural rock asphalt modified pitch, including the raw material of following parts by weight: Iran's natural rock asphalt 15～20 parts, matrix pitch 90～100 parts, aromatic naphtha 20～30 parts, thermoplastic elastomer (TPE) 15～30 parts, stabilizer 3～5 parts, compatilizer 3～5 parts, dispersant 0.5～1 part.The modified pitch prepared by special preparation method, the compatibility is good, is not easily blocked production equipment, and its preparation method operation safety, technique simple possible, provides a kind of brand-new selection for modified pitch.
Description
Technical field
The invention belongs to new material technology field, be specifically related to a kind of Iran's natural rock asphalt modified pitch and preparation side thereof
Method.
Background technology
Existing petroleum asphalt modified technology mainly has a thermoplastic elastomer class (SBS), rubber-like (SBR), resinae (EVA,
PE).Relevant natural rock asphalt modification technology aspect, existing data shows, Modified Asphalt Mixture of Natural Rock Asphalt, incessantly at height
The level of polymer modified asphalt it is all up on warm nature energy, cryogenic property and water stabilizing, and the most remote in other performances
Exceed polymer modified asphalt compound.
But there is presently no the corresponding job specfication of natural rock asphalt and concrete exercisable foundation.In prior art useful
The application in making asphalt road surface of China's Qing Chuan natural rock asphalt, but China's Qing Chuan kir yield is little, expensive,
Ash is big, is easily generated equipment pipeline blockage, is difficult to the defects such as storage.
Iran's natural rock asphalt is the high-quality natural rock asphalt of Iran's import, and Iran's natural rock asphalt is compatible with asphalt
Property good, production technology is simple, operates safety, properties of product stabilizing factor, and low in raw material price, kir compound cost performance
Height, and Iran's natural rock asphalt abundance, can effectively solve the problem that existing energy problem of China.
Summary of the invention
There is blocking production equipment expensive, easy for processes of rock asphalt modified asphalt in prior art, be difficult to storage etc. and lack
Falling into, the present invention provides a kind of Iran natural rock asphalt modified pitch and preparation method thereof.The modified pitch compatibility in the present invention
Good, it is not easily blocked production equipment, and its preparation method operation safety, technique simple possible, provides for modified pitch a kind of complete
New selection.
The present invention provides a kind of Iran natural rock asphalt modified pitch, including the raw material of following parts by weight: Iran is natural
Kir 15～20 parts, matrix pitch 90～100 parts, aromatic naphtha 20～30 parts, thermoplastic elastomer (TPE) 15～30 parts, stabilizer 3
～5 parts, compatilizer 3～5 parts, dispersant 0.5～1 part.
Preferably, above-mentioned Iran natural rock asphalt modified pitch, including the raw material of following parts by weight: Iran's natural rock drip
Blue or green 20 parts, matrix pitch 90 parts, aromatic naphtha 25 parts, thermoplastic elastomer (TPE) 20 parts, stabilizer 4 parts, compatilizer 4 parts, dispersant 1
Part.
Wherein, in above-mentioned Iran natural rock asphalt modified pitch, described Iran natural rock asphalt ash ＜ 15%, granularity is
100～120 mesh.
Wherein, in above-mentioned Iran natural rock asphalt modified pitch, described matrix pitch is asphalt, preferably 70# base
Matter Colophonium and 90# matrix pitch.
Wherein, in above-mentioned Iran natural rock asphalt modified pitch, described thermoplastic elastomer (TPE) is styrene～butadiene
～styrol copolymer and styrene～the mixture of isoprene, both weight ratios are 3～5: 6～7.
Wherein, in above-mentioned Iran natural rock asphalt modified pitch, described aromatic hydrocarbons viscous crude is decompression distillation lube base
Oil.
Wherein, above-mentioned Iran natural rock asphalt modified pitch in, described stabilizer be cumyl peroxide and, triolefin
The mixture of propyl group isocyanuric acid ester weight ratio 1: 1.
Wherein, in above-mentioned Iran natural rock asphalt modified pitch, described compatilizer is that maleic anhydride is grafted compatilizer.
Wherein, in above-mentioned Iran natural rock asphalt modified pitch, described dispersant is sodium tripolyphosphate and hexa metaphosphoric acid
The mixture of sodium by weight 2: 3.
Present invention also offers the preparation method of a kind of above-mentioned Iran natural rock asphalt modified pitch, comprise the following steps:
A, Iran's natural rock asphalt is mixed at 150～180 DEG C with matrix pitch, after stirring premix swelling 0.5～1h
Preliminary shearing, is stirred for 1.5～2h；
B, stirred after, before storing use three grades of high-speed shearing machines carry out fine pruning, make Rock Powder uniformly merge
In matrix pitch；
C, store while stirring at temperature 150～160 DEG C；
D, aromatic naphtha, thermoplastic elastomer (TPE), stabilizer, compatilizer and dispersant are added in step C products therefrom, mixing
After react, reaction temperature 150～180 DEG C, the response time 3～4h, course of reaction high speed stir, mixing speed is 2000
～3000r/min, obtain Iran's natural rock asphalt modified pitch.
The invention have the benefit that and the present invention selects Iran's natural rock asphalt be modified, utilize natural rock asphalt
Good with the asphalt compatibility, production technology is simple, operates safety, properties of product stabilizing factor, and the drip of low in raw material price, rock
The advantages such as blue or green compound cost performance is high, mix it with asphalt and are modified, add a certain amount of in preparation process
Aromatic naphtha, thermoplastic elastomer (TPE), stabilizer, compatilizer and dispersant so that the modified pitch of preparation has preferable high/low temperature
Performance, water stabilizing, be especially suitable for deck paving, the mating formation of road junction, for the modified drip of China's road
Green grass or young crops provides a kind of brand-new selection.
Detailed description of the invention
The present invention provides a kind of Iran natural rock asphalt modified pitch, including the raw material of following parts by weight: Iran is natural
Kir 15～20 parts, matrix pitch 90～100 parts, aromatic naphtha 20～30 parts, thermoplastic elastomer (TPE) 15～30 parts, stabilizer 3
～5 parts, compatilizer 3～5 parts, dispersant 0.5～1 part.
Preferably, above-mentioned Iran natural rock asphalt modified pitch, including the raw material of following parts by weight: Iran's natural rock drip
Blue or green 20 parts, matrix pitch 90 parts, aromatic naphtha 25 parts, thermoplastic elastomer (TPE) 20 parts, stabilizer 4 parts, compatilizer 4 parts, dispersant 1
Part.
Wherein, in above-mentioned Iran natural rock asphalt modified pitch, described Iran natural rock asphalt content of ashes ＜ 15%, grain
Degree is 100～120 mesh.The granularity of kir plays great role to the performance of modified pitch, and kir granularity is excessive, kir
Long with matrix pitch time of fusion, in kir, the powder of sandstone and rock easily precipitates；Fineness is too small, and kir is floating to be difficult to
Miscible, therefore, through choosing comprehensively, inventor find kir granularity be 100～120 mesh be optimum granularity.Additionally, rock
The content of ashes of Colophonium is also the key influence factor of performance of modified bitumen, and ash is the index of a rock content, and ash contains
Amount size to modified pitch stirring and shear time state have large effect, be also cost height crucial effect because of
Element, the Iranian natural rock asphalt of preferred content of ashes ＜ 15% in technical solution of the present invention.
Wherein, in above-mentioned Iran natural rock asphalt modified pitch, described matrix pitch is asphalt, preferably 70# base
Matter Colophonium and 90# matrix pitch.
Wherein, in above-mentioned Iran natural rock asphalt modified pitch, described thermoplastic elastomer (TPE) is styrene～butadiene
～styrol copolymer and styrene～the mixture of isoprene, both weight ratios are 3～5: 6～7.
Thermoplastic elastomer (TPE) is conducive to the improvement of the high temperature performance of modified pitch in suitable content range.If it is hot
The amount of thermoplastic elastic is less than 15 weight portions, then do not have the effect of the high temperature performance improving modified pitch；If thermoplasticity
The amount of elastomer is more than 30 weight portions, then the viscosity that can make modified pitch is too high, affects the mixing of modified asphalt mixture and becomes
Type.Therefore, the present invention uses the thermoplastic elastomer (TPE) of 15～30 weight portions.
Wherein, in above-mentioned Iran natural rock asphalt modified pitch, described aromatic naphtha is decompression distillation lube base oil.
Aromatic naphtha is conducive to the improvement of the cryogenic property of modified pitch in suitable content range.If the amount of aromatic naphtha is less than 20 weights
Amount part, then improve DeGrain to the cryogenic property of modified pitch；If the amount of aromatic naphtha is more than 30 weight portions, then to low temperature
The amplitude of performance improvement is the most inconspicuous, and can significantly affect the high-temperature behavior of modified pitch, therefore, the present invention use 20～
The aromatic naphtha of 30 weight portions.
Wherein, above-mentioned Iran natural rock asphalt modified pitch in, described stabilizer be cumyl peroxide and, triolefin
The mixture of propyl group isocyanuric acid ester weight ratio 1: 1.
Wherein, in above-mentioned Iran natural rock asphalt modified pitch, described compatilizer is that maleic anhydride is grafted compatilizer.
Wherein, in above-mentioned Iran natural rock asphalt modified pitch, described dispersant is sodium tripolyphosphate and hexa metaphosphoric acid
The mixture of sodium by weight 2: 3.
Present invention also offers the preparation method of a kind of above-mentioned Iran natural rock asphalt modified pitch, comprise the following steps:
A, Iran's natural rock asphalt is mixed at 150～180 DEG C with matrix pitch, after stirring premix swelling 0.5～1h
Preliminary shearing, is stirred for 1.5～2h；
B, stirred after, before storing use three grades of high-speed shearing machines carry out fine pruning, make Rock Powder uniformly merge
In matrix pitch；
C, store while stirring at temperature 150～160 DEG C；
D, aromatic naphtha, thermoplastic elastomer (TPE), stabilizer, compatilizer and dispersant are added in step C products therefrom, mixing
After react, reaction temperature 150～180 DEG C, the response time 3～4h, course of reaction high speed stir, mixing speed is 2000
～3000r/min, obtain Iran's natural rock asphalt modified pitch.
Below by embodiment, the detailed description of the invention of the present invention is described further, but not by the protection of the present invention
In the range of scope is limited in described in embodiment.
Each product described in embodiment is common commercially available prod.
Embodiment 1 technical solution of the present invention prepares modified pitch 1
The raw material of modified pitch 1 consists of: count by weight, Iran's natural rock asphalt 15 parts, matrix pitch 90 parts, virtue
Hydrocarbon ils 20 parts, thermoplastic elastomer (TPE) 15 parts, stabilizer 3 parts, compatilizer 3 parts, dispersant 0.5 part.
Preparation method is as follows, comprises the following steps:
A, being mixed at 150 DEG C with matrix pitch by Iran's natural rock asphalt, stirring premixes preliminary shearing after swelling 0.5h, then stirs
Mix 1.5h；
B, stirred after, before storing use three grades of high-speed shearing machines carry out fine pruning, make Rock Powder uniformly merge
In matrix pitch；
C, store while stirring at temperature 150 DEG C；
D, aromatic naphtha, thermoplastic elastomer (TPE), stabilizer, compatilizer and dispersant are added in step C products therefrom, mixing
After react, reaction temperature 150 DEG C, response time 3h, course of reaction high speed stir, mixing speed is 2000r/min,
To Iran's natural rock asphalt modified pitch 1.
Embodiment 2 technical solution of the present invention prepares modified pitch 2
The raw material of modified pitch 2 consists of: count by weight, Iran's natural rock asphalt 20 parts, matrix pitch 100 parts,
Aromatic naphtha 30 parts, thermoplastic elastomer (TPE) 30 parts, stabilizer 5 parts, compatilizer 5 parts, dispersant 1 part.
Preparation method is as follows, comprises the following steps:
A, being mixed at 180 DEG C with matrix pitch by Iran's natural rock asphalt, stirring premixes preliminary shearing after swelling 1h, is stirred for
2h；
B, stirred after, before storing use three grades of high-speed shearing machines carry out fine pruning, make Rock Powder uniformly merge
In matrix pitch；
C, store while stirring at temperature 160 DEG C；
D, aromatic naphtha, thermoplastic elastomer (TPE), stabilizer, compatilizer and dispersant are added in step C products therefrom, mixing
After react, reaction temperature 180 DEG C, response time 4h, course of reaction high speed stir, mixing speed is 3000r/min,
To Iran's natural rock asphalt modified pitch 2.
Embodiment 3 technical solution of the present invention prepares modified pitch 3
The raw material of modified pitch 3 consists of: count by weight, Iran's natural rock asphalt 20 parts, matrix pitch 90 parts, virtue
Hydrocarbon ils 25 parts, thermoplastic elastomer (TPE) 20 parts, stabilizer 4 parts, compatilizer 4 parts, dispersant 1 part.
Preparation method is as follows, comprises the following steps:
A, being mixed at 160 DEG C with matrix pitch by Iran's natural rock asphalt, stirring premixes preliminary shearing after swelling 1h, is stirred for
2h；
B, stirred after, before storing use three grades of high-speed shearing machines carry out fine pruning, make Rock Powder uniformly merge
In matrix pitch；
C, store while stirring at temperature 160 DEG C；
D, aromatic naphtha, thermoplastic elastomer (TPE), stabilizer, compatilizer and dispersant are added in step C products therefrom, mixing
After react, reaction temperature 180 DEG C, response time 4h, course of reaction high speed stir, mixing speed is 2500r/min,
To Iran's natural rock asphalt modified pitch 3.
The kir that comparative example 4 substitutes the present invention by equivalent SBS prepares modified pitch 4
The raw material of modified pitch 4 is in addition to substituting the SBS of Iran's natural rock asphalt equivalent, and remaining raw material and step are with real
Execute example 3.The modified pitch of embodiment and comparative example gained is carried out performance test, obtains result as shown in table 1 below.
The performance measurement table of table 1 modified pitch
As seen from the experiment, the modified pitch that technical solution of the present invention prepares meets " asphalt highway construction technology
Specification " method of (JTGF40-2004) performance requirement to modified pitch, meanwhile, the modified drip of technical solution of the present invention gained
It is very big that blue or green compound high-temperature behavior promotes amplitude, and cryogenic property is not affected, and water stabilizing is excellent, preferably
Bridge floor or intersection are mated formation.
Claims (10)
1. an Iranian natural rock asphalt modified pitch, it is characterised in that include the raw material of following parts by weight: Iran's natural rock
Colophonium 15～20 parts, matrix pitch 90～100 parts, aromatic naphtha 20～30 parts, thermoplastic elastomer (TPE) 15～30 parts, stabilizer 3～5
Part, compatilizer 3～5 parts, dispersant 0.5～1 part.
Iran the most according to claim 1 natural rock asphalt modified pitch, it is characterised in that include following parts by weight
Raw material: Iran's natural rock asphalt 20 parts, matrix pitch 90 parts, aromatic naphtha 25 parts, thermoplastic elastomer (TPE) 20 parts, stabilizer 4 parts, phase
Hold agent 4 parts, dispersant 1 part.
Iran the most according to claim 1 natural rock asphalt modified pitch, it is characterised in that: described Iran natural rock asphalt
Ash ＜ 15%, granularity is 100～120 mesh.
Iran the most according to claim 1 natural rock asphalt modified pitch, it is characterised in that: described matrix pitch is
70# matrix pitch or 90# matrix pitch.
Iran the most according to claim 1 natural rock asphalt modified pitch, it is characterised in that: described thermoplastic elastomer (TPE)
For styrene～butadiene～styrol copolymer and styrene～the mixture of isoprene, both weight ratios are 3～5:6
～7.
Iran the most according to claim 1 natural rock asphalt modified pitch, it is characterised in that: described aromatic hydrocarbons viscous crude is for subtracting
Pressure distillation lube base oil.
Iran the most according to claim 1 natural rock asphalt modified pitch, it is characterised in that: described stabilizer is peroxide
Change diisopropylbenzene (DIPB) and, the mixture of Triallyl isocyanurate weight ratio 1:1.
Iran the most according to claim 1 natural rock asphalt modified pitch, it is characterised in that: described compatilizer is Malaysia
Acid anhydride-grafted compatilizer.
Iran the most according to claim 1 natural rock asphalt modified pitch, it is characterised in that: described dispersant is trimerization
The mixture of sodium phosphate and sodium hexameta phosphate 2:3 by weight.
10., according to the preparation method of the Iranian natural rock asphalt modified pitch described in any one of claim 1～9, its feature exists
In, comprise the following steps:
A, Iran's natural rock asphalt is mixed at 150～180 DEG C with matrix pitch, preliminary shearing after stirring premix swelling 0.5～1h,
It is stirred for 1.5～2h；
B, stirred after, before storing use three grades of high-speed shearing machines carry out fine pruning, make Rock Powder uniformly merge in substrate
In Colophonium；
C, store while stirring at temperature 150～160 DEG C；
D, aromatic naphtha, thermoplastic elastomer (TPE), stabilizer, compatilizer and dispersant are added in step C products therefrom, mix laggard
Row reaction, reaction temperature 150～180 DEG C, the response time 3～4h, course of reaction high speed stir, mixing speed be 2000～
3000r/min, obtains Iran's natural rock asphalt modified pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610560542.3A CN106189291B (en) | 2016-07-15 | 2016-07-15 | Iranian natural rock asphalt modified pitch and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610560542.3A CN106189291B (en) | 2016-07-15 | 2016-07-15 | Iranian natural rock asphalt modified pitch and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106189291A true CN106189291A (en) | 2016-12-07 |
| CN106189291B CN106189291B (en) | 2018-10-23 |
Family
ID=57475809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610560542.3A Active CN106189291B (en) | 2016-07-15 | 2016-07-15 | Iranian natural rock asphalt modified pitch and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106189291B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107383902A (en) * | 2017-06-29 | 2017-11-24 | 安徽和轩岩沥青科技有限公司 | A kind of preparation method of processes of rock asphalt modified asphalt |
| CN107698993A (en) * | 2017-11-01 | 2018-02-16 | 中交瑞通路桥养护科技有限公司 | High Modulus Bituminous Mixtures Additive based on kir and preparation method thereof |
| CN110951270A (en) * | 2019-08-19 | 2020-04-03 | 湖北正康天然沥青科技有限公司 | Process for improving freezing resistance of rock asphalt mortar by adding aromatic hydrocarbon |
| CN113429801A (en) * | 2021-07-12 | 2021-09-24 | 甘肃路桥建设集团养护科技有限责任公司 | Anti-rutting anti-fatigue high-modulus composite modified asphalt and preparation method thereof |
| CN113444373A (en) * | 2021-06-03 | 2021-09-28 | 李威风 | Composition for modifying asphalt, modified asphalt, method for producing same, and asphalt mixture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103374230A (en) * | 2012-04-13 | 2013-10-30 | 中国石油天然气股份有限公司 | Preparation method of SBS modified asphalt |
| CN104725882A (en) * | 2014-10-11 | 2015-06-24 | 江苏苏博特新材料股份有限公司 | High-modulus asphalt based on natural asphalt modification, as well as preparation method and application thereof |
| CN105199406A (en) * | 2015-10-10 | 2015-12-30 | 上海森锐道路工程技术有限公司 | Rock-asphalt-modified asphalt mixture and preparation method thereof |
-
2016
- 2016-07-15 CN CN201610560542.3A patent/CN106189291B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103374230A (en) * | 2012-04-13 | 2013-10-30 | 中国石油天然气股份有限公司 | Preparation method of SBS modified asphalt |
| CN104725882A (en) * | 2014-10-11 | 2015-06-24 | 江苏苏博特新材料股份有限公司 | High-modulus asphalt based on natural asphalt modification, as well as preparation method and application thereof |
| CN105199406A (en) * | 2015-10-10 | 2015-12-30 | 上海森锐道路工程技术有限公司 | Rock-asphalt-modified asphalt mixture and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 夏寿荣: "《建筑防水材料生产工艺与配方精选》", 31 October 2010, 北京：化学工业出版社 * |
| 廖克俭 等: "《道路沥青生产与应用技术》", 31 August 2004, 北京：化学工业出版社 * |
| 李永成 等: "《路基路面工程施工技术》", 31 December 2014, 北京：人民交通出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107383902A (en) * | 2017-06-29 | 2017-11-24 | 安徽和轩岩沥青科技有限公司 | A kind of preparation method of processes of rock asphalt modified asphalt |
| CN107698993A (en) * | 2017-11-01 | 2018-02-16 | 中交瑞通路桥养护科技有限公司 | High Modulus Bituminous Mixtures Additive based on kir and preparation method thereof |
| CN110951270A (en) * | 2019-08-19 | 2020-04-03 | 湖北正康天然沥青科技有限公司 | Process for improving freezing resistance of rock asphalt mortar by adding aromatic hydrocarbon |
| CN113444373A (en) * | 2021-06-03 | 2021-09-28 | 李威风 | Composition for modifying asphalt, modified asphalt, method for producing same, and asphalt mixture |
| CN113429801A (en) * | 2021-07-12 | 2021-09-24 | 甘肃路桥建设集团养护科技有限责任公司 | Anti-rutting anti-fatigue high-modulus composite modified asphalt and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106189291B (en) | 2018-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106189291A (en) | Iran's natural rock asphalt modified pitch and preparation method thereof | |
| CN100595234C (en) | Bitumen compositions and preparation method thereof | |
| CN102977621A (en) | SBS (styrene-butadiene-styrene)/scrap rubber powder composite modified asphalt and preparation method thereof | |
| CN105038280B (en) | A kind of SBS modified pitch and preparation method thereof | |
| CN102585523A (en) | Composition for warm-mix asphalt pavements | |
| CN102770494A (en) | Polymer-modified asphalt with a crosslinking agent and methods of preparing | |
| CN104513488B (en) | Road asphalt modifier and modified pavement asphalt containing coal directly-liquefied residue and preparation method thereof | |
| CN104725883A (en) | High-viscosity high-elasticity asphalt based on surface modification of rubber particles, and high-viscosity high-elasticity SMA (stone mastic asphalt) mixture based on surface modification of rubber particles and preparing method thereof | |
| CN102532920A (en) | Warm-mixed asphalt cement and preparation method thereof | |
| CN104591575B (en) | A kind of preparation method of coal directly-liquefied residue Stability of Modified Asphalt Mortar | |
| US9458320B2 (en) | Pre-swelled ground tire rubber and methods of making and using the same | |
| CN105368084B (en) | A kind of modified pitch and preparation method thereof | |
| CN103305015A (en) | Warm-mixing high-elastoplasticity bridge expansion joint sealing material and preparation method thereof | |
| EP2350200A1 (en) | Bituminous mixtures with a high polymer content | |
| CN107057387A (en) | It is a kind of to refine road mix asphalt of tar sand and preparation method thereof altogether containing kerosene | |
| CN104650602A (en) | High-grade road hard asphalt and preparation method thereof | |
| CN103911009B (en) | Emulsified rubber powder-modified asphalt and preparation method thereof | |
| CN102408733B (en) | Warm mix asphalt viscosity breaking agent | |
| CN102010603A (en) | Rubber powder modified emulsified asphalt and preparation method thereof | |
| EA008663B1 (en) | Multigrade asphalt powder additive | |
| CN101724277B (en) | Flame retarding asphalt composition for roads and preparation method thereof | |
| CN107849304A (en) | Use the modified pitch of phosphorous acid | |
| CN110499034A (en) | A kind of dedicated modified pitch of pouring asphalt concrete and preparation method thereof | |
| CN102504854A (en) | Method of producing modified asphalt | |
| CN105985041B (en) | A kind of asphalt mixture additive and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |