CN101210086A - Asphalt concrete tracking-resisting modifier - Google Patents
Asphalt concrete tracking-resisting modifier Download PDFInfo
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- CN101210086A CN101210086A CNA2007101690042A CN200710169004A CN101210086A CN 101210086 A CN101210086 A CN 101210086A CN A2007101690042 A CNA2007101690042 A CN A2007101690042A CN 200710169004 A CN200710169004 A CN 200710169004A CN 101210086 A CN101210086 A CN 101210086A
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- asphalt concrete
- resisting modifier
- tracking
- asphalt
- rut
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Abstract
The invention relates to a track resistant modifying agent used in asphalt concrete. The asphalt concrete track resistant modifying agent is characterized in that the asphalt concrete track resistant modifying agent consists of raw materials with the weight portion ration of 65 to 80 portions of low density polyethylene, 10 to 30 portions of anchoring agent, and 0 to 5 portions of activated rubber powder. The anchoring agent is petroleum resin or abietic resin. The invention has inexpensive price and excellent performance, and can improve the stability of the asphalt concrete at high temperature, enhance pavement bearing capacity and prolong service life of the pavement.
Description
Technical field
The invention belongs to the material technology field, be specifically related to the tracking-resisting modifier that bituminous concrete uses.
Technical background
Rut is the tension set that produces on the runway wheel path, is made up of the depression of wheelmark and the protuberance of both sides.According to the different forming processes of rut, rut can be divided into the three major types type: unstability type rut, structure-type rut, wear pattern rut.Pertinent data studies show that at present serious is unstability type rut.Unstability type rut is meant that when the high-temperature stability deficiency of asphalt, asphalt pavement structural layer is under the wheel load effect, and its material inside produces transversal displacement and forms depression at the wheelmark place because of flowing.
The appearance of rut has had a strong impact on the work-ing life and the service quality on road surface, has brought many harm to road surface and road surface user: influence the planeness on road surface, reduced road-ability; Wheelmark place brea bed reduced thickness has weakened the bulk strength of pitch and pavement structure, thereby is easy to bring out various diseases, as check crack and damage by water evil idea etc.; Rainy day road table impeded drainage has reduced the anti-slide performance on road surface, can float cunning owing to rut ponding causes vehicle even, and winter, rut internal memory water-setting build-up ice, and the pavement skid resistance ability drop influences the safety of high speed traveling; Vehicle is out of control when overtaking other vehicles or change direction, influences the stability of trailer reversing.
More and more serious along with the rut problem, people attempt adopting modifying asphalt, SMA road surface, but still not can solve the rut problem.Adopting asphalt concrete tracking-resisting modifier is new approaches that solve the asphalt pavement rut problem in recent years.Asphalt concrete tracking-resisting modifier is a high molecular polymer, and main purpose is to improve the high temperature stability performance of bituminous concrete, uses and just can obtain good effect on a small quantity, existing abroad sophisticated product.But external product costs an arm and a leg, and causes construction cost to increase considerably, and can't big area use.
Chinese patent application CN1887951 (open day 20070103) " High Grade Bitumen Pavement track-resistant additive " has announced a kind of tracking-resisting modifier, this track-resistant additive is made up of new LDPE (film grade), high density polyethylene(HDPE), petroleum pitch and algae tripoli, this product waterproof, wear resisting property are good, and shaping speed is fast; Its weak point is: complex technical process, cost are higher.
Summary of the invention
The present invention aims to provide a kind of asphalt concrete tracking-resisting modifier of cheap, excellent performance.
For achieving the above object, technical scheme of the present invention is: asphalt concrete tracking-resisting modifier, it is characterized in that it is made up of following raw material, and each raw materials quality part proportioning is:
65～80 parts of regeneration new LDPE (film grade)s,
10～30 parts of tackifier,
0～5 part of activating rubber powder;
Described tackifier are petroleum resin or Gum Rosin.
The proportion by weight of described activating rubber powder is: 1～5 part.
When tackifier adopted petroleum resin, consumption was 10～25 parts; When tackifier adopted Gum Rosin, consumption was 15～30 parts.
The preparation method of above-mentioned asphalt concrete tracking-resisting modifier is as follows:
To regenerate after new LDPE (film grade), tackifier, activating rubber powder mix in proportion at normal temperatures, drop into twin screw extruder, 140～160 ℃ of start blending temperature controls, mixture is cooled to normal temperature and promptly gets asphalt concrete tracking-resisting modifier through the forcing machine extruding pelletization.
Advantage of the present invention is:
1, be main raw material with the regeneration new LDPE (film grade), cheap;
2, excellent performance: the viscosity that petroleum resin that add in the regeneration new LDPE (film grade) raw material or Gum Rosin can increase bituminous concrete, the adding of activating rubber powder can improve the resistance to deterioration and the low-temperature performance of bituminous concrete; New LDPE (film grade) can significantly improve and gathers materials and the bituminous adhesive property, has enlarged bituminous visco-elasticity simultaneously, has limited pitch and flow in bituminous concrete, has reduced the bituminous temperature sensitivity.This properties-correcting agent can improve the bituminous concrete high temperature stability performance, increase the road surface bearing capacity, prolongs road surface working life.
The asphalt concrete tracking-resisting modifier mechanism of action is as follows:
1), the viscosifying action that gathers materials, when tracking-resisting modifier mixes and stirs at first with the dry mixing of gathering materials, partial melting has improved the cohesiveness of gathering materials in surface of aggregate, effect is equal to has carried out pre-modification to gathering materials;
2), asphalt modification effect; Anti-rut agent is partly dissolved or swells in the pitch in wet-mixing and transportation, forms cementation, thereby reaches the effect that improves softening point temperature, increase viscosity, reduces asphalt modifications such as thermo-sensitivity;
3), fiber and steel bar reinforced effect; The micro-crystallization district of polymer formation has suitable stiffness, and the part wire drawing becomes plastic optical fibre in the process of mixing and stirring, and puts up a bridge crosslinked in the skeleton that gathers materials and forms fiber and steel bar reinforced effect;
4), fine aggregate skeleton function; Anti-rut agent is softening temporarily in construction, these particles thermoforming in the process of rolling then, single particle size fine aggregate with high-adhesiveness has been filled the space in the skeleton that gathers materials, thereby has both increased the skeleton function of asphalt structure, has reduced the perviousness on moulding road surface simultaneously again;
5), distortion restitution; The elastic component of anti-rut agent has the function of the crushed element recovery of elasticity that makes the road surface when comparatively high temps, thereby has reduced the tension set of moulding bituminous pavement.
The present invention is experimental study in the laboratory, can increase substantially the bituminous concrete high temperature stability performance.
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:
To produce the 1000g asphalt concrete tracking-resisting modifier is example, each raw material consumption following (regeneration new LDPE (film grade), tackifier, activating rubber powder, be the commercial goods):
The regeneration new LDPE (film grade) (melt flow rate (MFR) 0.3～0.8g/10min) 800g,
Petroleum resin (tackifier) 150g,
Activating rubber powder 50g.
The preparation method of above-mentioned asphalt concrete tracking-resisting modifier is as follows: after above-mentioned regeneration new LDPE (film grade), petroleum resin, activating rubber powder are mixed at normal temperatures, drop into twin screw extruder, 140 ℃ of start blending temperature controls, mixture is cooled to normal temperature and promptly gets this product through the forcing machine extruding pelletization.
Because regenerated polythene does not have canonical name, so define the polyethylene type of use with national standard index melt flow rate (MFR).Adopt melt flow rate (MFR) relatively good in 4～50,000 regenerated polythene effect at 0.3～0.8g/10min or molecular weight.
Embodiment 2:
To produce the 1000g asphalt concrete tracking-resisting modifier is example, and each amounts of components is as follows:
The regeneration new LDPE (film grade) (melt flow rate (MFR) 0.6～0.8g/10min) 650g,
Gum Rosin 300g,
Activating rubber powder 50g.
The preparation method of above-mentioned asphalt concrete tracking-resisting modifier is as follows: after will regenerate new LDPE (film grade), Gum Rosin, activating rubber powder mix in proportion at normal temperatures, drop into twin screw extruder, 150 ℃ of start blending temperature controls, mixture is extruded through forcing machine, is cooled to the normal temperature granulation and promptly gets product.
Embodiment 3:
To produce the 1000g asphalt concrete tracking-resisting modifier is example, and each amounts of components is as follows:
Regeneration new LDPE (film grade) 700g,
Gum Rosin 300g.
The preparation method of above-mentioned asphalt concrete tracking-resisting modifier is as follows: after will regenerate new LDPE (film grade), Gum Rosin mix in proportion at normal temperatures, drop into twin screw extruder, 160 ℃ of start blending temperature controls, mixture is cooled to normal temperature and promptly gets asphalt concrete tracking-resisting modifier through the forcing machine extruding pelletization.
The present invention through the laboratory indoor a large amount of evidences respond well.Test (JTJ052-2000) is carried out according to " highway engineering pitch and asphalt testing regulation ", and technical indicator is carried out according to " asphalt highway construction technique normalizing " (JTG F40-2004) contrast.
The using method of asphalt concrete tracking-resisting modifier is as follows:
When bituminous concrete heat is gathered materials dry mixing, asphalt concrete tracking-resisting modifier is thrown in the agitator, even with the compound that gathers materials, the mix temperature need improve 10～15 ℃.The asphalt concrete tracking-resisting modifier usage quantity is 0.2～0.6% of an asphalt concrete quality, and when consumption was 0.2～0.4%, the bituminous concrete oil was than constant; When consumption was 0.5～0.6%, the bituminous concrete bitumen aggregate ratio improved 0.05～0.01%.
1, high temperature rut performance:
Table 1 asphalt mixture in track test (anti-rut agent among the table 1-3 is an asphalt concrete tracking-resisting modifier of the present invention)
| Project | Dynamic stability (inferior/mm) | The rut degree of depth (inferior/mm) |
| Bituminous concrete+0.0% anti-rut agent bituminous concrete+0.3% anti-rut agent bituminous concrete+0.5% anti-rut agent | 2410 7329 10692 | 2.481 0.774 0.674 |
2, anti-bad performance of damage by water:
Table 2 asphalt freeze thawing split test
| Project | Cleavage strength (MPa) before the freeze thawing | Cleavage strength after the freeze thawing (MPa) | TSR(％) |
| Bituminous concrete+0.0% anti-rut agent bituminous concrete+0.3% anti-rut agent bituminous concrete+0.5% anti-rut agent | 1.00 1.30 1.50 | 0.80 1.20 1.40 | 80 92 93 |
3, crack resistance at low-temperature:
Table 3 asphalt low-temperature bending performance test (10 ℃)
| Project | Flexural tensile strength (Mpa) | Stiffness modulus (Mpa) | Flexural-tensile strain (μ ε) |
| Bituminous concrete+0.0% anti-rut agent bituminous concrete+0.3% anti-rut agent bituminous concrete+0.5% anti-rut agent | 13.7 14.8 15.8 | 9503 11152 10539 | 1429 1489 1354 |
Embodiment 4:
Asphalt concrete tracking-resisting modifier, it is made up of following raw material, and each raw materials quality part proportioning is:
65 parts of regeneration new LDPE (film grade)s,
10 parts of petroleum resin.
The preparation method of above-mentioned asphalt concrete tracking-resisting modifier is as follows:
To regenerate after new LDPE (film grade), petroleum resin mix in proportion at normal temperatures, drop into twin screw extruder, 160 ℃ of start blending temperature controls, mixture is cooled to normal temperature and promptly gets asphalt concrete tracking-resisting modifier through the forcing machine extruding pelletization.
Embodiment 5:
Asphalt concrete tracking-resisting modifier, it is made up of following raw material, and each raw materials quality part proportioning is:
65 parts of regeneration new LDPE (film grade)s,
10 parts of petroleum resin,
1 part of activating rubber powder;
The preparation method of above-mentioned asphalt concrete tracking-resisting modifier is as follows:
To regenerate after new LDPE (film grade), petroleum resin, activating rubber powder mix in proportion at normal temperatures, drop into twin screw extruder, 140 ℃ of start blending temperature controls, mixture is cooled to normal temperature and promptly gets asphalt concrete tracking-resisting modifier through the forcing machine extruding pelletization.
Embodiment 6:
Asphalt concrete tracking-resisting modifier, it is made up of following raw material, and each raw materials quality part proportioning is:
80 parts of regeneration new LDPE (film grade)s,
30 parts of Gum Rosins,
5 parts of activating rubber powders;
The preparation method of above-mentioned asphalt concrete tracking-resisting modifier is as follows:
To regenerate after new LDPE (film grade), Gum Rosin, activating rubber powder mix in proportion at normal temperatures, drop into twin screw extruder, 160 ℃ of start blending temperature controls, mixture is cooled to normal temperature and promptly gets asphalt concrete tracking-resisting modifier through the forcing machine extruding pelletization.
Claims (3)
1. asphalt concrete tracking-resisting modifier is characterized in that it is made up of following raw material, and each raw materials quality part proportioning is:
65～80 parts of regeneration new LDPE (film grade)s,
10～30 parts of tackifier,
0～5 part of activating rubber powder;
Described tackifier are petroleum resin or Gum Rosin.
2. asphalt concrete tracking-resisting modifier according to claim 1 is characterized in that: the proportion by weight of described activating rubber powder is: 1～5 part.
3. asphalt concrete tracking-resisting modifier according to claim 1 is characterized in that: when tackifier were petroleum resin, consumption was 10～25 parts; When tackifier were Gum Rosin, consumption was 15～30 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101690042A CN101210086B (en) | 2007-12-25 | 2007-12-25 | Asphalt concrete tracking-resisting modifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101690042A CN101210086B (en) | 2007-12-25 | 2007-12-25 | Asphalt concrete tracking-resisting modifier |
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| CN101210086A true CN101210086A (en) | 2008-07-02 |
| CN101210086B CN101210086B (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101690042A Expired - Fee Related CN101210086B (en) | 2007-12-25 | 2007-12-25 | Asphalt concrete tracking-resisting modifier |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174265A (en) * | 2011-01-26 | 2011-09-07 | 北京厚德交通科技有限公司 | Anti-rutting additive with high modulus and high strength as well as preparation method and applications thereof |
| CN102702601A (en) * | 2012-06-04 | 2012-10-03 | 深圳市科中大交通建材有限公司 | Direct addition type rubber powder composite asphalt mixture modifier and preparation method thereof |
| CN101817659B (en) * | 2010-02-01 | 2012-10-17 | 北京天成垦特莱科技有限公司 | Composite road surface intensifier and production method thereof |
| CN102910850A (en) * | 2012-09-26 | 2013-02-06 | 天津市市政工程研究院 | Novel asphalt pavement anti-rut agent and preparation method |
| CN104194359A (en) * | 2014-08-27 | 2014-12-10 | 成都市容德建筑劳务有限公司 | Hot-melt-adhesive viscous modified pavement asphalt |
| CN104530730A (en) * | 2014-12-31 | 2015-04-22 | 无锡朴晟科技有限公司 | Modified asphalt reinforcing additive and application thereof |
| CN105271898A (en) * | 2014-12-12 | 2016-01-27 | 深圳市利安建材发展有限公司 | Bituminous pavement modified anti-rut agent and preparation method therefor |
| CN107759869A (en) * | 2016-08-22 | 2018-03-06 | 深圳海川新材料科技有限公司 | A kind of bituminous concrete anti-rut agent of natural fiber base and preparation method thereof |
| CN116063022A (en) * | 2022-12-31 | 2023-05-05 | 山西省交通科技研发有限公司 | Asphalt concrete externally doped anti-rutting agent with shell-core structure and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100700078B1 (en) * | 2005-04-06 | 2007-03-28 | 허정도 | Compositions and manufacturing methods of bitumen modifiers having complex functionality |
| ES2261077B1 (en) * | 2005-04-25 | 2007-12-16 | Repsol Ypf, S.A. | BITUNIMOUS BINDING, PROCEDURE FOR THE APPLICATION OF THE SAME AND ITS USE FOR ROAD PAVING. |
| CN100451064C (en) * | 2006-07-31 | 2009-01-14 | 西安高远公路养护技术有限公司 | Rut resisting admixutre for high-grade asphalt highway |
| CN101054451B (en) * | 2007-05-22 | 2010-05-26 | 杨林江 | Artificial asphalt for pavement and preparation method thereof |
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2007
- 2007-12-25 CN CN2007101690042A patent/CN101210086B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817659B (en) * | 2010-02-01 | 2012-10-17 | 北京天成垦特莱科技有限公司 | Composite road surface intensifier and production method thereof |
| CN102174265A (en) * | 2011-01-26 | 2011-09-07 | 北京厚德交通科技有限公司 | Anti-rutting additive with high modulus and high strength as well as preparation method and applications thereof |
| CN102174265B (en) * | 2011-01-26 | 2012-10-03 | 北京厚德交通科技有限公司 | Anti-rutting additive with high modulus and high strength as well as preparation method and applications thereof |
| CN102702601A (en) * | 2012-06-04 | 2012-10-03 | 深圳市科中大交通建材有限公司 | Direct addition type rubber powder composite asphalt mixture modifier and preparation method thereof |
| CN102910850A (en) * | 2012-09-26 | 2013-02-06 | 天津市市政工程研究院 | Novel asphalt pavement anti-rut agent and preparation method |
| CN104194359A (en) * | 2014-08-27 | 2014-12-10 | 成都市容德建筑劳务有限公司 | Hot-melt-adhesive viscous modified pavement asphalt |
| CN105271898A (en) * | 2014-12-12 | 2016-01-27 | 深圳市利安建材发展有限公司 | Bituminous pavement modified anti-rut agent and preparation method therefor |
| CN104530730A (en) * | 2014-12-31 | 2015-04-22 | 无锡朴晟科技有限公司 | Modified asphalt reinforcing additive and application thereof |
| CN107759869A (en) * | 2016-08-22 | 2018-03-06 | 深圳海川新材料科技有限公司 | A kind of bituminous concrete anti-rut agent of natural fiber base and preparation method thereof |
| CN116063022A (en) * | 2022-12-31 | 2023-05-05 | 山西省交通科技研发有限公司 | Asphalt concrete externally doped anti-rutting agent with shell-core structure and preparation method thereof |
| CN116063022B (en) * | 2022-12-31 | 2024-04-02 | 山西省交通科技研发有限公司 | Asphalt concrete externally doped anti-rutting agent with shell-core structure and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN101210086B (en) | 2010-11-03 |
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