CN104610769A - Normal-temperature-modified asphalt for high-strength cold-laid asphalt mixture and preparation method of normal-temperature-modified asphalt - Google Patents
Normal-temperature-modified asphalt for high-strength cold-laid asphalt mixture and preparation method of normal-temperature-modified asphalt Download PDFInfo
- Publication number
- CN104610769A CN104610769A CN201510068521.5A CN201510068521A CN104610769A CN 104610769 A CN104610769 A CN 104610769A CN 201510068521 A CN201510068521 A CN 201510068521A CN 104610769 A CN104610769 A CN 104610769A
- Authority
- CN
- China
- Prior art keywords
- normal
- temperature
- asphalt
- normal temperature
- strength cold
- 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
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to normal-temperature-modified asphalt for a high-strength cold-laid asphalt mixture and a preparation method of normal-temperature-modified asphalt. The normal-temperature-modified asphalt for the high-strength cold-laid asphalt mixture comprises the following components in parts by weight: 58-64 parts of petroleum asphalt, 21-30 parts of a reactive diluent, 11-14 parts of a diluents, 0.01-1 part of a flame retardant and 0.01-1 part of a modifier. The normal-temperature-modified asphalt is small in viscosity at normal temperature and has good construction workability; the softening point of the normal-temperature-modified asphalt is higher than that of ordinary petroleum asphalt and the normal-temperature-modified asphalt has the advantages of large elastic recovery rate, short surface drying time, high curing-molding rate and strong coating force with an aggregate. The cold-laid asphalt mixture prepared from the normal-temperature-modified asphalt has the advantages of high early strength forming speed after paving, high molding strength and short open transportation time compared to the conventional cold-mixing asphalt mixture and meanwhile, the high temperature performance, water stability and the low-temperature performance can reach the technical requirements of the hot-mixing asphalt mixture and the preparation method is simple, economic, environmentally friendly and energy-saving.
Description
Technical field
The present invention relates to a kind of normal temperature modified pitch, the preparation method of this normal temperature modified pitch, and utilize this normal temperature modified pitch to prepare the method for cold laid asphaltic compound.
Background technology
By the end of the year in 2013, highway in China net total kilometrage will reach 398.4 ten thousand km, increase 63.9 ten thousand km between 5 years newly.Wherein, motorway has increased 3.3 ten thousand km newly, occupies second place of the world.In built motorway, be almost bituminous concrete pavement entirely.Bituminous pavement has pavement performance excellent, and comfortable, the plurality of advantages such as noise is little, easy to maintenance, construction speed is fast, dust pollution is few of driving a vehicle of driving a vehicle, have now become the principal mode of each standard highway of China and urban road laying.
Now, if Road construction medium pitch road base uses hot-mix asphalt mixture, but hot-mix asphalt mixture high temperature construction, energy consumption are high, operation is numerous and diverse and seriously polluted.And pitch long-time heating in mix, transport, paving process, also can produce " heat " catabiosis, not only seriously can affect road life, also can produce series of negative effect: 1, energy-output ratio is large, contaminate environment; 2, equipment is complicated, cost is high; 3, large by seasonal effect, effective engineering time is short.
A part based on above-mentioned hot-mix asphalt mixture self is not enough, and the appearance of Cold bituminous mixture can solve these technical barriers.It is applicable to multiple climatope, does not need heat, and power consumption low stain is little, easy to use, and construction is simple, and required equipment requires also low, not only may be used for Reparation of Bituminous Pavement, also can be used for paving.Present China more and more payes attention to environmental issue, therefore uses the bituminous material of low-energy environment-friendly to be also more and more necessary.
The normal temperature pitch of Current Domestic research is mainly divided into two large classes: emulsified bitumen and fluxed asphalt.The former is due to moisture, and anti-water damage property, adhesive property are poor; The latter contains Macrodilution agent, and volatilization needs for some time, and therefore strength derived value speed is slow.The normal temperature bituminous material performance of external import is higher, but it is expensive, and user is difficult to bear, and cannot use in a large number in engineering; Actively develop the research of normal temperature modified pitch and compounding process thereof, have very important meaning.
Summary of the invention
The invention provides a kind of high-strength cold laid asphaltic compound normal temperature modified pitch and preparation method thereof, under solving existing normal temperature, cold laid asphaltic compound intensity is low, the technical problem that strength derived value speed is slow; And solve current complicated process of preparation, the problem that cost is high.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: the normal temperature modified pitch of a kind of high-strength cold laid asphaltic compound, and its each feed composition is as follows by weight ratio:
The normal temperature modified pitch of high-strength cold laid asphaltic compound as above, preferably: described response type thinner is ethylene glycol, 1,2-butyleneglycol, plant asphalt, plant polyatomic alcohol one or more mix.
The normal temperature modified pitch of high-strength cold laid asphaltic compound as above, preferably: described thinner is normal heptane, tetrahydrofuran (THF), acetone, sherwood oil one or more mix.
State on the invention in technical scheme, preferably: described fire retardant is that one or more of three (2,3-dibromopropyl) isocyanuric acid ester, melamine phosphate and ammonium polyphosphate flame retardant mix.Described properties-correcting agent is styrene-butadiene-styrene block copolymer, styrene-butadiene rubber(SBR) one or more mix.
The present invention also provides the method for the normal temperature modified pitch of preparation high-strength cold laid asphaltic compound described above, carries out as follows:
Step one, heat oil pitch to 130 DEG C, stirs, adds response type thinner simultaneously under 500 r/min speed, stirs 15 ~ 30 min, until pitch mixes with it;
Step 2, joins in the mixed solution that step one prepares by asphalt flame-retardant agent, properties-correcting agent by proportioning, stirs and be trimmed to agranular uniform state, then continue stirring 10 ~ 20min under 3000 r/min speed at 100 DEG C;
Step 3, joins thinner in the mixed solution that step 2 prepares, is stirred to uniform state, then continues stirring 10 ~ 20min, sealed type storage under 1000r/min speed at 90 DEG C.
The present invention also provides a kind of method preparing high-strength cold laid asphaltic compound, carries out as follows:
Step one, will gather materials, normal temperature modified pitch according to any one of claim 1 to 3 pour in mix pot in certainweight ratio, and stir 60s, make normal temperature modified pitch be dispersed in surface of aggregate under 60r/min speed under normal temperature condition;
Step 2, pours breeze into by certain important proportion at normal temperatures, first rapid stirring 60s under 100r/min speed, then under 60r/min speed at a slow speed continue stir 60s, make to gather materials evenly wrap up in attached asphalite arogel slurry and without grey point;
Step 3, slowly pours high reactivity direct-throwing intensity adjustments additive in certainweight ratio, adds while stir 120s to evenly under 60r/min speed, obtains high-strength cold laid asphaltic compound.
Prepare the method for high-strength cold laid asphaltic compound as mentioned above, preferably: described high reactivity direct-throwing intensity adjustments additive is that one or both in vulcabond, polyisocyanates mix.
The invention has the beneficial effects as follows:
1, the normal temperature modified pitch of the present invention has good mobility, workability.Response type thinner kinematic viscosity is less than 1 Pa
s, and have good consistency with pitch, effectively can improve the normal temperature mobility of pitch, meanwhile, add a small amount of thinner and be in harmonious proportion, make product of the present invention kinematic viscosity at normal temperatures be less than 3 Pa
s, has good construction workability, meets the mix requirement of asphalt.
2, asphalt intensity of the present invention is high.The high reactivity direct-throwing intensity adjustments additive that asphalt of the present invention adds has-NCO group, and the active group-OH in its highly active unsaturated link(age) and response type thinner curing reaction can occur fast and generates elastomerics.The present invention reduces the usage quantity of volatile-type solvent, the early strength that the high reactivity direct-throwing intensity adjustments additive adopted improves normal temperature compound forms speed, early strength can account for 70 ~ 80% of total intensity, i.e. open to traffic time shorten, its shaping strength is also very high simultaneously, hot-mix asphalt mixture requirement of strength can be reached, be obviously better than the cold-mix asphalt compound of other types.
3, asphalt membrane thickness of the present invention is large, wraps power strong.The elastomerics that curing reaction generates is strong with the cohesive force of gathering materials, and effectively can increase the asphalt membrane thickness gathered materials, have excellent wear resistance and physical strength simultaneously, strengthens the power that wraps and improves pitch film strength.
4, Asphalt Mixture Performance of the present invention is excellent.The thermoset elastomer that in the present invention, response type thinner and high reactivity direct-throwing intensity adjustments additive reaction generate, effectively can improve the high-temperature behavior of asphalt, make its chemical property more stable, is not easy to migration; Low-temperature performance and water stability are also improved simultaneously, can reach the technical requirements of hot-mix asphalt mixture.
5, preparation technology of the present invention is simple, cheap.Preparation technology of the present invention is simple, does not need large-scale specific installation, and preparation process fast, economy, energy-saving and environmental protection, excellent performance, there is very high using value.
Embodiment
The preparation method of the normal temperature modified pitch of specific embodiment is:
Step one, heating shell A level 70# pitch to 130 DEG C, stirs, adds response type thinner simultaneously, stir 15 ~ 30 min, until pitch mixes with it under 500 r/min speed;
Step 2, joins in the mixed solution that step one prepares by asphalt flame-retardant agent, properties-correcting agent by proportioning, stirs and be trimmed to agranular uniform state, then continue stirring 10 ~ 20min under 3000 r/min speed at 100 DEG C;
Step 3, joins thinner in the mixed solution that step 2 prepares, is stirred to uniform state, then continues stirring 10 ~ 20min, sealed type storage under 1000r/min speed at 90 DEG C.
The preparation method of the normal temperature modified asphalt of specific embodiment is:
Step one, will gather materials and normal temperature modified pitch pours mix pot into, make normal temperature modified pitch uniformly dispersing in surface of aggregate, under 60r/min speed, stir 60s;
Step 2, pours breeze into, under 100r/min speed, stir 60s, and material to be mixed is homogeneous, then stirs 60s under 60r/min speed;
Step 3, evenly pours high reactivity direct-throwing intensity adjustments additive into, stirs 120s, obtain Cold bituminous mixture under 60r/min speed.
High reactivity direct-throwing intensity adjustments additive described in the enforcement of this example is diphenylmethanediisocyanate (MDI).
Describedly to gather materials, associated specifications that breeze, properties-correcting agent all meet communications and transportation standard JTG F40-2004 " standard specification for construction and acceptance of highway asphalt pavement " promulgated by the ministries or commissions of the Central Government, the gradation types of embodiment of the present invention Cold bituminous mixture is AC-13C type, and concrete material composition sees the following form.
Be described principle of the present invention and feature below in conjunction with embodiment, example, only for explaining the present invention, is not intended to limit scope of the present invention.
embodiment 1
Normal temperature modified pitch is made up of the raw material of following weight part:
In the present embodiment, response type thinner is plant polyatomic alcohol, thinner is normal heptane, fire retardant is the agent of DS-ZR asphalt flame-retardant, properties-correcting agent is styrene-butadiene-styrene block copolymer.The present embodiment and following examples PetroChina Company Limited. pitch are shell A level 70# pitch.
The indices detected result of the normal temperature modified pitch that embodiment 1 prepares is as following table.
Each feed composition of normal temperature modified asphalt is as follows by weight ratio:
Normal temperature modified pitch 4.7 parts;
Gather materials and breeze 94.5 parts;
High reactivity direct-throwing intensity adjustments additive 0.8 part.
The proportion relation of normal temperature modified pitch and intensity adjustments additive, to make the mole number of active group-OH in response type thinner: in intensity adjustments additive, active group-NCO equals or determines close to 1:1.Normal temperature modified pitch and intensity adjustments additive quality summation account for cold laid asphaltic compound 4 ~ 7%.
Compound (by the above-mentioned weight) performance that the normal temperature modified pitch prepared according to example 1 and the aggregate blending of AC-13 type are formed is as following table.
Heat mixes matrix pitch A level 70#, and manufacturer is shell, and model is AH-70.
Heat mixes SBS modifying asphalt, and manufacturer is shell, and model is I-D.
embodiment 2
Normal temperature modified pitch is made up of the raw material of following weight part:
In the present embodiment, response type thinner is 1,2-butyleneglycol, thinner is tetrahydrofuran (THF), fire retardant is the agent of DS-ZR asphalt flame-retardant, properties-correcting agent is styrene-butadiene rubber(SBR).
The indices detected result of the normal temperature modified pitch that embodiment 2 prepares is as following table.
Each feed composition of normal temperature modified asphalt is as follows by weight ratio:
Normal temperature modified pitch 4.8 parts;
Gather materials and breeze 94.5 parts;
High reactivity direct-throwing intensity adjustments additive 0.7 part.
Compound (by the above-mentioned weight) performance that the eu-bitumen prepared according to example 2 and the aggregate blending of AC-13 type are formed is as following table.
embodiment 3
Normal temperature modified pitch is made up of the raw material of following weight part:
In the present embodiment, response type thinner is plant asphalt, thinner is acetone, fire retardant is the agent of DS-ZR asphalt flame-retardant, properties-correcting agent is styrene-butadiene rubber(SBR).
The indices detected result of the normal temperature modified pitch that embodiment 3 prepares is as following table.
Each feed composition of normal temperature modified asphalt is as follows by weight ratio:
Normal temperature modified pitch 4.7 parts;
Gather materials and breeze 94.5 parts;
High reactivity direct-throwing intensity adjustments agent 0.8 part.
Compound (by the above-mentioned weight) performance that the eu-bitumen prepared according to example 3 and the aggregate blending of AC-13 type are formed is as following table.
Can draw from the test result of above three embodiments, the normal temperature modified pitch of the present invention at normal temperatures kinematic viscosity is less than 3Pa
s, has good construction workability, meets construction requirement; Normal temperature modified pitch softening point is higher than common petroleum pitch, and simultaneously elastic recovery properties is excellent, and surface drying time is short, and curing molding speed is fast, and gathers materials that to wrap power strong.
High intensity cold petrolize compound prepared by the present invention is compared to other cold-mix asphalt compounds, it is fast that early strength forms speed, and can account for 70 ~ 80% of total intensity, shaping strength is high, namely shorten the open to traffic time, intensity can reach hot-mix asphalt mixture technical requirements; Its high-temperature behavior, water stability and low-temperature performance all can reach hot-mix asphalt mixture requirement simultaneously, have good pavement performance; And prepare easy, economy, environmental protection, energy-conservation, there is very high using value.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the normal temperature modified pitch of high-strength cold laid asphaltic compound, is characterized in that: its each feed composition is as follows by weight ratio:
58 ~ 64 parts, petroleum pitch;
Response type thinner 21 ~ 30 parts;
Thinner 11 ~ 14 parts;
Fire retardant 0.01 ~ 1 part;
Properties-correcting agent 0.01 ~ 1 part.
2. the normal temperature modified pitch of high-strength cold laid asphaltic compound according to claim 1, is characterized in that: described response type thinner is ethylene glycol, 1,2-butyleneglycol, plant asphalt, plant polyatomic alcohol one or more mix.
3. the normal temperature modified pitch of high-strength cold laid asphaltic compound according to claim 1, is characterized in that: described thinner is normal heptane, tetrahydrofuran (THF), acetone, sherwood oil one or more mix.
4. preparation high-strength cold laid asphaltic compound method of normal temperature modified pitch according to any one of claim 1-3, is characterized in that carrying out as follows:
Step one, heat oil pitch to 130 DEG C, stirs, adds response type thinner simultaneously under 500 r/min speed, stirs 15 ~ 30 min, until pitch mixes with it;
Step 2, joins in the mixed solution that step one prepares by asphalt flame-retardant agent, properties-correcting agent by proportioning, stirs and be trimmed to agranular uniform state, then continue stirring 10 ~ 20min under 3000 r/min speed at 100 DEG C;
Step 3, joins thinner in the mixed solution that step 2 prepares, is stirred to uniform state, then continues stirring 10 ~ 20min, sealed type storage under 1000r/min speed at 90 DEG C.
5. prepare the method for high-strength cold laid asphaltic compound, it is characterized in that carrying out as follows:
Step one, will gather materials, normal temperature modified pitch according to any one of claim 1 to 3 pour in mix pot in certainweight ratio, and stir 60s, make normal temperature modified pitch be dispersed in surface of aggregate under 60r/min speed under normal temperature condition;
Step 2, pours breeze into by certain important proportion at normal temperatures, first rapid stirring 60s under 100r/min speed, then under 60r/min speed at a slow speed continue stir 60s, make to gather materials evenly wrap up in attached asphalite arogel slurry and without grey point;
Step 3, slowly pours high reactivity direct-throwing intensity adjustments additive in certainweight ratio, adds while stir 120s to evenly under 60r/min speed, obtains high-strength cold laid asphaltic compound.
6. prepare the method for high-strength cold laid asphaltic compound according to claim 5, it is characterized in that: described high reactivity direct-throwing intensity adjustments additive is that one or both in vulcabond, polyisocyanates mix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068521.5A CN104610769B (en) | 2015-02-10 | 2015-02-10 | A kind of preparation method of high-strength cold laid asphaltic compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068521.5A CN104610769B (en) | 2015-02-10 | 2015-02-10 | A kind of preparation method of high-strength cold laid asphaltic compound |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104610769A true CN104610769A (en) | 2015-05-13 |
| CN104610769B CN104610769B (en) | 2017-10-13 |
Family
ID=53145431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510068521.5A Active CN104610769B (en) | 2015-02-10 | 2015-02-10 | A kind of preparation method of high-strength cold laid asphaltic compound |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104610769B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293994A (en) * | 2015-10-31 | 2016-02-03 | 菏泽海诺知识产权服务有限公司 | Coloured asphalt pavement mixture |
| CN105348827A (en) * | 2015-11-09 | 2016-02-24 | 长安大学 | Solvent-type cold-patch asphalt liquid and preparation technology therefor |
| CN105712663A (en) * | 2016-01-25 | 2016-06-29 | 新疆富翔交通工程材料有限公司 | Bag-storable SMC normal temperature modified asphalt mixture |
| CN106116269A (en) * | 2016-07-07 | 2016-11-16 | 沈阳建筑大学 | A kind of cold repairing asphalt mixture and preparation method thereof |
| CN106673500A (en) * | 2016-06-23 | 2017-05-17 | 北京市政路桥建材集团有限公司 | Normal temperature asphalt mixture and its construction design method |
| CN107722651A (en) * | 2017-10-19 | 2018-02-23 | 上海市政工程设计研究总院（集团）有限公司 | It is a kind of can the quick high intensity micro-surface area bituminous cements of open to traffic preparation method |
| CN107778890A (en) * | 2017-10-19 | 2018-03-09 | 上海市政工程设计研究总院（集团）有限公司 | It is a kind of can quick open to traffic high intensity micro-surface area bituminous cements |
| CN108726924A (en) * | 2018-07-23 | 2018-11-02 | 湖南鑫长胜材料科技有限公司 | Response type Cold bituminous mixture and preparation method thereof |
| CN110054907A (en) * | 2019-05-10 | 2019-07-26 | 湖南鑫长胜材料科技有限公司 | Biology base Normal Atmospheric Temperature Liquid pitch and the preparation method and application thereof |
| CN115180877A (en) * | 2022-07-06 | 2022-10-14 | 哈尔滨工业大学 | Composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI (diphenylmethane diisocyanate) and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554708A (en) * | 2003-12-28 | 2004-12-15 | 大连市政设施修建总公司材料综合加工 | Method for preparing cold stirring cold laying road asphalt |
| WO2005100481A1 (en) * | 2004-04-09 | 2005-10-27 | Kao Specialty Americas, Llc | Extended life slurry seal composition |
| CN102329102A (en) * | 2010-07-13 | 2012-01-25 | 上海道柯特沥青科技有限公司 | Hot-mix-cold-laid SBS (styrene butadiene styrene) modified asphalt mixture |
| CN102464892A (en) * | 2010-11-13 | 2012-05-23 | 烟台万华聚氨酯股份有限公司 | Composite polyurethane modifier for road asphalt |
| CN103923475A (en) * | 2014-04-14 | 2014-07-16 | 长安大学 | Improved solvent cold laid asphalt as well as preparation process and using method thereof |
-
2015
- 2015-02-10 CN CN201510068521.5A patent/CN104610769B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554708A (en) * | 2003-12-28 | 2004-12-15 | 大连市政设施修建总公司材料综合加工 | Method for preparing cold stirring cold laying road asphalt |
| WO2005100481A1 (en) * | 2004-04-09 | 2005-10-27 | Kao Specialty Americas, Llc | Extended life slurry seal composition |
| CN102329102A (en) * | 2010-07-13 | 2012-01-25 | 上海道柯特沥青科技有限公司 | Hot-mix-cold-laid SBS (styrene butadiene styrene) modified asphalt mixture |
| CN102464892A (en) * | 2010-11-13 | 2012-05-23 | 烟台万华聚氨酯股份有限公司 | Composite polyurethane modifier for road asphalt |
| CN103923475A (en) * | 2014-04-14 | 2014-07-16 | 长安大学 | Improved solvent cold laid asphalt as well as preparation process and using method thereof |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293994A (en) * | 2015-10-31 | 2016-02-03 | 菏泽海诺知识产权服务有限公司 | Coloured asphalt pavement mixture |
| CN105293994B (en) * | 2015-10-31 | 2018-03-09 | 山东大山路桥工程有限公司 | A kind of Colorful Asphalt Pavement mixture |
| CN105348827A (en) * | 2015-11-09 | 2016-02-24 | 长安大学 | Solvent-type cold-patch asphalt liquid and preparation technology therefor |
| CN105348827B (en) * | 2015-11-09 | 2018-10-19 | 长安大学 | A kind of solvent type asphalt cold repairing liquid and its preparation process |
| CN105712663A (en) * | 2016-01-25 | 2016-06-29 | 新疆富翔交通工程材料有限公司 | Bag-storable SMC normal temperature modified asphalt mixture |
| CN106673500A (en) * | 2016-06-23 | 2017-05-17 | 北京市政路桥建材集团有限公司 | Normal temperature asphalt mixture and its construction design method |
| CN106116269A (en) * | 2016-07-07 | 2016-11-16 | 沈阳建筑大学 | A kind of cold repairing asphalt mixture and preparation method thereof |
| CN107722651A (en) * | 2017-10-19 | 2018-02-23 | 上海市政工程设计研究总院（集团）有限公司 | It is a kind of can the quick high intensity micro-surface area bituminous cements of open to traffic preparation method |
| CN107778890A (en) * | 2017-10-19 | 2018-03-09 | 上海市政工程设计研究总院（集团）有限公司 | It is a kind of can quick open to traffic high intensity micro-surface area bituminous cements |
| CN108726924A (en) * | 2018-07-23 | 2018-11-02 | 湖南鑫长胜材料科技有限公司 | Response type Cold bituminous mixture and preparation method thereof |
| CN110054907A (en) * | 2019-05-10 | 2019-07-26 | 湖南鑫长胜材料科技有限公司 | Biology base Normal Atmospheric Temperature Liquid pitch and the preparation method and application thereof |
| CN115180877A (en) * | 2022-07-06 | 2022-10-14 | 哈尔滨工业大学 | Composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI (diphenylmethane diisocyanate) and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104610769B (en) | 2017-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104610769A (en) | Normal-temperature-modified asphalt for high-strength cold-laid asphalt mixture and preparation method of normal-temperature-modified asphalt | |
| CN101085871B (en) | Asphalt modified by epoxy resin and rubber powder | |
| CN106675055B (en) | Asphalt warm-mixing modifier and preparation method thereof | |
| CN104987734A (en) | High fracture toughness and elasticity modified asphalt, preparing method and application thereof | |
| CN101899218A (en) | Asphalt warm-mix agent and asphalt mixture mixed by same as well as preparation methods thereof | |
| CN105236831A (en) | Aged-asphalt regeneration agent, regenerated asphalt mixture and preparation method of two | |
| CN106396502A (en) | Foamed warm mix recycled asphalt mixture and preparation method thereof | |
| CN103849153B (en) | The preparation method of high-viscosity high-elasticity asphalt and high-viscosity high-elasticity asphalt | |
| CN107188461A (en) | Inspire confidence in the preparation method of basalt fibre water-permeating pitch mixed material in a kind of incorporation North America | |
| CN103289420A (en) | Admixing type modifier of asphalt mixture | |
| CN113462176A (en) | Warm-mixed flame-retardant SMA asphalt mixture, and preparation method, application and construction method thereof | |
| CN106519718A (en) | High-modulus asphalt additive | |
| CN105418964A (en) | Microwave catalytic activation rubber powder composition and preparation method therefor | |
| CN109517395A (en) | A kind of flame-retardant high-strength asphalt additive and preparation method thereof | |
| CN101240093B (en) | Road surface strengthening agent | |
| CN107500611B (en) | Waste grease premixed reinforced asphalt mixture and preparation method thereof | |
| CN107265926A (en) | Inspire confidence in basalt fibre water-permeating pitch mixed material in one kind incorporation North America | |
| CN103936927A (en) | Reactive type asphalt mixture additive, as well as mixture, preparation method and applications thereof | |
| CN105348832A (en) | High-viscosity anti-rutting performance modified asphalt and processing method | |
| CN106751949A (en) | A kind of preparation method of SBS modified asphalt waterproofs material | |
| CN113527899A (en) | Cast modified asphalt and cast modified asphalt concrete | |
| CN110982094B (en) | Reactive solvent and application | |
| CN104944843A (en) | High-performance asphalt mixture for steel bridge floor pavement and preparation method thereof | |
| CN111533491A (en) | Environment-friendly asphalt mixture and preparation method thereof | |
| CN101830669A (en) | Method for manufacturing synthetic asphalt for extra heavy traffic |
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 |