CN101781468A - Modified asphalt viscosity decreasing agent - Google Patents
Modified asphalt viscosity decreasing agent Download PDFInfo
- Publication number
- CN101781468A CN101781468A CN200910191813A CN200910191813A CN101781468A CN 101781468 A CN101781468 A CN 101781468A CN 200910191813 A CN200910191813 A CN 200910191813A CN 200910191813 A CN200910191813 A CN 200910191813A CN 101781468 A CN101781468 A CN 101781468A
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- China
- Prior art keywords
- modified asphalt
- parts
- temperature
- asphalt
- viscosity
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Classifications
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- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/44—Thickening, gelling or viscosity increasing agents
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a modified asphalt viscosity decreasing agent which relates to a paving material for roads, bridges and tunnels. The viscosity decreasing agent is prepared from the following components in parts by weight: 4-20 parts of organic acid, 1-30 parts of surface active agent, 5-80 parts of synthesis paraffin, and 1-30 parts of compatilizer. After the viscosity decreasing agent is doped, the high-temperature viscosity of the modified asphalt is greatly decreased, while other various indexes are not changed. Simultaneously, compared with the common modified asphalt, after the viscosity decreasing agent is doped, the concrete stirring temperature, low-temperature property and fatigue property of the casting type asphalt are greatly improved. The invention is mainly used for road petroleum asphalt and SBS modified asphalt.
Description
Technical field
The present invention relates to road, bridge and tunnel pavement material, especially a kind of modified asphalt viscosity decreasing agent.
Technical background
Modifying asphalt has the pavement performance (particularly high-temperature stability, low temperature flexibility and fatigue cracking) that improves asphalt, prolong advantage such as service life of road surface, thereby obtained widespread use in pavement structures such as high grade pavement, open gradation antiskid wearing layer, macrovoid open gradation drainage type asphalt wearing layer, quadrature deformed steel deck paving.
Modified asphalt mixture is seasonal strong in pavement construction, natural condition such as the weather of its pavement quality and construction seasons, temperature, wind, rain have very big relation, especially the day and night temperature at northern area is big, temperature on average is low, therefore the temperature of asphalt descends fast, viscosity sharply descends, make time available for compaction reduce, cause in the construction process producing some insoluble problems, as: planeness is low and be difficult to control, degree of compactness is inhomogeneous and coefficient of loose laying is inaccurate, surface layer bonding difficulty, segregation etc. up and down.Because the temperature of modified asphalt mixture is low excessively, rolls in the process compound is produced damage simultaneously.
Summary of the invention
The objective of the invention is to solve the problem in the modifying asphalt application, provide a kind of high-performance practical modified asphalt viscosity decreasing agent.Compare with existing viscosity-depression agent in the market, this viscosity-depression agent has the modifying asphalt of reduction high temperature viscosity, reduces the construction temperature of asphalt; Improving modifying asphalt ductility and softening temperature softening temperature reduces; Wearing out of asphalt; Can effectively improve the technical characterstics such as anti-low-temperature cracking, high-temperature stability and chronic fatigue performance of asphalt.
Modified asphalt viscosity decreasing agent provided by the invention comprises organic acid, tensio-active agent, synthetic paraffin, compatilizer, and its composition is counted by weight:
4～20 parts of organic acids,
1～30 part in tensio-active agent,
5～80 parts in synthetic paraffin,
1～30 part of compatilizer.
Organic acid of the present invention is oxysuccinic acid, D-pHPG or stearic acid; Tensio-active agent is anhydrous sorbitol tristearate or polyoxyethylene (20) sorbitan monooleate; Synthetic paraffin is fusing point at 90～140 ℃ synthesizing aliphatic hydrocarbons or carboxylate; Compatilizer is Viscotrol C or phthalate esters.
The method for making of the modified asphalt viscosity decreasing agent of indication of the present invention:
With compatilizer 100～120 ℃ down the dehydration back add organic acid, tensio-active agent and synthetic paraffin, be blend in 80～100 ℃ the screw extrusion press in temperature, extrude, granulation, cooling forms.
Organic acid mainly act as and improves bituminous low-temperature performance and fatigue property among the present invention; Tensio-active agent mainly act as and reduces the bituminous high temperature viscosity and improve low-temperature performance; Synthetic paraffin mainly act as and reduces modifying asphalt high temperature viscosity and high-temperature behavior; Compatilizer mainly act as and improves bitumen construction performance and fatigue property.
The present invention, simple and practical, the method for making of filling a prescription is convenient, can effectively reduce the high temperature viscosity of modifying asphalt, improves stability at high temperature of asphalt mixture, low-temperature cracking-resistance and chronic fatigue performance, mainly is applicable to bi tumenf orr oad and SBS modifying asphalt.
The performance table 1 of the modified asphalt viscosity decreasing agent of indication of the present invention
The technical feature of table 1 modified asphalt viscosity decreasing agent
| Technical indicator | Outward appearance | 175 ℃ of viscosity break ratio % | Flash-point ℃ | TFOT quality change % |
| Measured value | Faint yellow particle | ?34 | ??260 | ??0.5 |
| Standard-required | Range estimation | ?≥20 | ??≥240 | ??＜3 |
Embodiment
Further specify the present invention below in conjunction with embodiment.
Adopt the proportioning of following table to carry out the enforcement of viscosity-depression agent
| Component | Weight g |
| D-pHPG | ??5000 |
| The anhydrous sorbitol tristearate | ??1000 |
| 90～140 ℃ synthesizing aliphatic hydrocarbons | ??8000 |
| Viscotrol C | ??1000 |
Technology: with Viscotrol C 100～120 ℃ down the dehydration back add the synthesizing aliphatic hydrocarbons of D-pHPGs, anhydrous sorbitol tristearate and 90～140 ℃, be blend in 80～100 ℃ the screw extrusion press in temperature, extrude, granulation, cooling forms.
Modified asphalt viscosity decreasing agent to the performance impact of SBS modifying asphalt is:
Modified asphalt viscosity decreasing agent to the performance impact of pouring asphalt concrete GA10 is:
| Test subject | The pouring asphalt concrete of admixture 4% viscosity-depression agent | Common pouring asphalt concrete | Index request |
| Mix and stir temperature ℃ | ?210 | ??240 | ??- |
| Mobile s | ?8.2 | ??15 | ??＜50 |
| Pile penetration (60 ℃) mm | ?1.78 | ??1.75 | ??＜4.00 |
| Pile penetration increment (60 ℃) mm | ?0.26 | ??0.19 | ??＜0.40 |
| Maximum flexural-tensile strain (10 ℃) μ ε | ?8846 | ??7279 | ??＞8000 |
| Bending strength (10 ℃), MPa | ?17.5 | ??15.7 | ??- |
| Stiffness modulus (10 ℃), MPa | ?1999.6 | ??2159.3 | ??- |
| Fatigue lifetime (800 ц ε) (ten thousand times) | ?＞100 | ??60 | ??＞50 |
Annotate: the low-temperature bending test sample dimensions is 300 * 100 * 50mm, fatigue test sample dimensions 50.8mm * 63.5mm * 381mm
Test result from above several tables, admixture viscosity-depression agent post-modification pitch reduction high temperature viscosity by a relatively large margin, all the other every performance index all do not change, and admixture viscosity-depression agent after-pouring formula bituminous concrete mixes and stirs the more common modifying asphalt of temperature, low-temperature performance and fatigue property and obtained very big improvement simultaneously.
Claims (1)
1. a modified asphalt viscosity decreasing agent comprises organic acid, tensio-active agent, synthetic paraffin, compatilizer, it is characterized in that forming and counts by weight:
4～20 parts of organic acids,
1～30 part in tensio-active agent,
5～80 parts in synthetic paraffin,
1～30 part of compatilizer,
Wherein, described organic acid is oxysuccinic acid, D-pHPG or stearic acid; Described tensio-active agent is anhydrous sorbitol tristearate or polyoxyethylene (20) sorbitan monooleate; Described synthetic paraffin is fusing point at 90～140 ℃ synthesizing aliphatic hydrocarbons or carboxylate; Described compatilizer is Viscotrol C or phthalate esters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101918132A CN101781468B (en) | 2009-12-08 | 2009-12-08 | Modified asphalt viscosity decreasing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101918132A CN101781468B (en) | 2009-12-08 | 2009-12-08 | Modified asphalt viscosity decreasing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101781468A true CN101781468A (en) | 2010-07-21 |
| CN101781468B CN101781468B (en) | 2011-12-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101918132A Active CN101781468B (en) | 2009-12-08 | 2009-12-08 | Modified asphalt viscosity decreasing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101781468B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104559234A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Asphalt viscosity reducer and asphalt composition |
| CN106977961A (en) * | 2017-04-19 | 2017-07-25 | 上海台安实业集团有限公司 | A kind of useless rubber plastics modified bitumen thinner and preparation method thereof |
| CN108017330A (en) * | 2017-12-28 | 2018-05-11 | 安徽金丰新型建材有限公司 | A kind of highway cement pitch concrete |
| CN108299790A (en) * | 2018-02-01 | 2018-07-20 | 山东联星能源集团有限公司 | A kind of modified asphalt viscosity decreasing agent and preparation method thereof |
| CN108485228A (en) * | 2018-02-01 | 2018-09-04 | 山东联星能源集团有限公司 | A kind of asphalt viscosity reduction agent |
| CN108659553A (en) * | 2017-03-31 | 2018-10-16 | 中国石油化工股份有限公司 | Asphalt flame-retardant thinner and preparation method thereof |
| CN111349300A (en) * | 2020-03-03 | 2020-06-30 | 重庆交通大学 | Modified asphalt viscosity reducer and preparation method thereof |
| WO2021036093A1 (en) * | 2019-08-28 | 2021-03-04 | 长安大学 | High-performance sulfur-based modified asphalt and preparation method therefor |
| CN112724949A (en) * | 2019-10-14 | 2021-04-30 | 中国石油天然气股份有限公司 | Lactic acidlike blocking remover for blocking removal of thick oil well and application thereof |
| CN113072817A (en) * | 2021-05-10 | 2021-07-06 | 江阴泰富沥青有限公司 | Epoxy rubber composite modified asphalt and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7691788B2 (en) * | 2006-06-26 | 2010-04-06 | Schlumberger Technology Corporation | Compositions and methods of using same in producing heavy oil and bitumen |
| CN101463249B (en) * | 2009-01-16 | 2011-01-12 | 北京奥尔创新石油工程技术有限公司 | Oil soluble heavy crude thinner and preparation thereof |
-
2009
- 2009-12-08 CN CN2009101918132A patent/CN101781468B/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104559234B (en) * | 2013-10-22 | 2017-02-08 | 中国石油化工股份有限公司 | Asphalt viscosity reducer and asphalt composition |
| CN104559234A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Asphalt viscosity reducer and asphalt composition |
| CN108659553A (en) * | 2017-03-31 | 2018-10-16 | 中国石油化工股份有限公司 | Asphalt flame-retardant thinner and preparation method thereof |
| CN106977961A (en) * | 2017-04-19 | 2017-07-25 | 上海台安实业集团有限公司 | A kind of useless rubber plastics modified bitumen thinner and preparation method thereof |
| CN106977961B (en) * | 2017-04-19 | 2019-04-26 | 上海台安实业集团有限公司 | A kind of useless rubber plastics modified bitumen thinner and preparation method thereof |
| CN108017330A (en) * | 2017-12-28 | 2018-05-11 | 安徽金丰新型建材有限公司 | A kind of highway cement pitch concrete |
| CN108485228A (en) * | 2018-02-01 | 2018-09-04 | 山东联星能源集团有限公司 | A kind of asphalt viscosity reduction agent |
| CN108299790A (en) * | 2018-02-01 | 2018-07-20 | 山东联星能源集团有限公司 | A kind of modified asphalt viscosity decreasing agent and preparation method thereof |
| WO2021036093A1 (en) * | 2019-08-28 | 2021-03-04 | 长安大学 | High-performance sulfur-based modified asphalt and preparation method therefor |
| CN112724949A (en) * | 2019-10-14 | 2021-04-30 | 中国石油天然气股份有限公司 | Lactic acidlike blocking remover for blocking removal of thick oil well and application thereof |
| CN112724949B (en) * | 2019-10-14 | 2022-11-04 | 中国石油天然气股份有限公司 | Lactic acidlike blocking remover for blocking removal of thick oil well and application thereof |
| CN111349300A (en) * | 2020-03-03 | 2020-06-30 | 重庆交通大学 | Modified asphalt viscosity reducer and preparation method thereof |
| CN113072817A (en) * | 2021-05-10 | 2021-07-06 | 江阴泰富沥青有限公司 | Epoxy rubber composite modified asphalt and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101781468B (en) | 2011-12-14 |
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