CN106634823A - Road sealant - Google Patents
Road sealant Download PDFInfo
- Publication number
- CN106634823A CN106634823A CN201710012280.1A CN201710012280A CN106634823A CN 106634823 A CN106634823 A CN 106634823A CN 201710012280 A CN201710012280 A CN 201710012280A CN 106634823 A CN106634823 A CN 106634823A
- Authority
- CN
- China
- Prior art keywords
- road
- sealant
- road sealant
- rubber powder
- rotating speed
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J195/00—Adhesives based on 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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
- C08L2207/24—Recycled plastic recycling of old tyres and caoutchouc and addition of caoutchouc particles
Abstract
The present invention discloses a road sealant. The road sealant is prepared from the following raw materials in mass percentages: 5%-6.5% of an adjusting modifier, 15%-17% of crumb rubber powder, 8%-9.2% of a cosolvent, 4.5%-6.8% of a tackifier, and an appropriate amount of matrix asphalt. The crumb rubber powder is waste tire rubber powder having a fineness of 60 meshes. The prepared rubber modified asphalt road sealant is strong in adhesive strength, low in costs, and excellent in water resistance, abrasion resistance, high temperature stability and low temperature flexibility. Combining testing regulations and detection indexes of JT/T 740-2015 "road surface heating sealant", the road sealant of the asphalt road surface in line with the specification requirements is prepared and a road surface fissure cementation technology of the produced road sealant is optimized.
Description
Technical field
The invention belongs to highway pavement patching material field, and in particular to one kind is used for bituminous paving, the cement pavement cementation of fissures
High-performance Road sealant.
Background technology
During the use of bituminous paving, with the passage of use time and being continuously increased for the volume of traffic, bituminous paving
Common crack disease occurs, it is almost accompanied by the whole validity period of bituminous paving, in becoming all kinds of infringements of bituminous paving
One of most common, most incident disease.The form in crack has various, and such as cracking, block splits, lobe, transverse fissure and reflection are split
Seam, its origin cause of formation is each different.However, being that the crack of which kind of form all should be repaired in time, otherwise rainwater will be by splitting
Seam enters basic unit, softens basic unit's even roadbed, causes basic unit, subgrade strength to reduce, and ultimately results in bituminous paving bearing capacity
Decline, in turn result in road surface local or damage in flakes, have a strong impact on road-ability, and substantially reduce pavement life.Crack
Breakage belongs to structural destruction, is more the durability for affecting bituminous paving.The generation in crack can cause asphalt pine
Dissipate, peel off, until producing pit, will result directly in the roughness descent of bituminous paving, have a strong impact on the comfortableness of car steering,
The security for causing running car declines, and jeopardizes the life of passenger.If repairing not in time and strengthening, road can be not only affected
Face attractive in appearance and increase will road surface breakage face, maintenance cost can be caused to be multiplied, and be easy to develop into road surface
Structural destruction and shorten the service life on road surface.
The material that filling cut of asphaltum road surface is adopted is referred to as Road sealant or base joint grouting glue, and Road sealant is generally using modified drip
Blue or green macromolecule polymer material heat construction.When Road sealant should have, high temperature strong with bituminous concrete slotted wall cementitiousness not
The performance such as not embrittlement when trickling, low temperature.But, various places highway maintenance department Road sealant application technology method be faced with
Under several key issues：
(1) domestic Road sealant wide material sources, quality is uneven
At present, the domestic Road sealant wide material sources for adopting, quality is uneven, and using effect is preferable not to the utmost, especially
It is that cryogenic property is generally poor, many Road sealants one to winter tear with sides of fracture, lose the effect of waterproof.
(2) the filling cut of asphaltum road surface material for meeting durability needs is less
The durability of filling cut of asphaltum road surface material includes high-temperature stability, cracking resistance extensibility, adhesion anti-de- property, anti-low-temperature cracking
Property.Gap-grouting material in summer high temperature weather, even trickle by softening of being easily heated.Under the compression stress effect that vehicular load is formed,
Material in crack is easy to be extruded or overflow crack, and makes the cementation of fissures fail.
(3) current gap-grouting material can not meet maintenance needs with technology
At present, some winter severe colds, summer extremely hot area, very high to the performance requirement of gap-grouting material, common pitch
Material winter embrittlement can ftracture, and summer feels like jelly trickling phenomenon substantially, does not have the effect of crack repairing.The cementation of fissures crash rate of a year
It is very high, it is required for repeating the cementation of fissures every year, time-intensive, expensive and produce little effect.
Hot type rubber modified asphalt Road sealant is the widest gap-grouting material of current domestic and international application, Technical comparing
Maturation, however it is necessary that special cementation of fissures equipment is carried out plus heat construction.Additionally, for common gap-grouting material, the punishment in crack
The punishment time should be grasped.If temperature is too high during punishment, due to Road sealant cool time it is slower, often in traffic bound
When taken away by wheel；If temperature is too low, Road sealant is difficult melting, not only cost of idleness, and waste of time.
(4) the gap-grouting material demand and construction technology based on asphalt pavement crack mechanism of production is not yet set up
The crack mechanism of bituminous paving can be generally divided into：Load Crack, non-load crack or the two coupling
The crack of effect.Influence depth and scope of the various cracks inside road surface is inconsistent, accordingly, it would be desirable at asphalt pavement crack
It is distinguish between in science and engineering skill, in the hope of extending the service life and using effect of gap-grouting material as far as possible.
Therefore, Highway Asphalt Pavement Cracks mechanism of production, filling cut of asphaltum road surface material and Slit-pouring Technology achievement in research are summarized,
Asphalt highway maintenance is strengthened using advanced gap-grouting material and technology, road surface early damage is prevented, is reduced road surface asset depreciation
Rate, reduces the maintenance cost of asphalt highway, safeguards pavement usage quality, accomplishes that maintenance fund is minimized and road
Face Performance optimization, is an important topic of urgent need to resolve.
The content of the invention
To solve the above problems, the invention provides a kind of Road sealant, cohesion is strong, low cost, water proofing property, wear-resisting
Property and high-temperature stability, low temperature flexibility are excellent.
For achieving the above object, the technical scheme taken of the present invention is：
A kind of Road sealant, it is characterised in that be prepared from by the raw material of following mass fraction：
Adjust modifying agent (SBS modifier) 5%～6.5%, rubber powder 15%～17%, cosolvent (epoxidized soybean oil) 8%
～9.2%, tackifier (C9 Petropols and organobentonite) 4.5%～6.8%, matrix pitch surplus.
Wherein, the rubber powder is rubber powder of waste tire that fineness is 60 mesh.
Preferably, the C9 Petropols are 2% and organobentonite is 2.5%.
Preferably, the C9 Petropols are 2.5% and organobentonite is 3.5%.
Preferably, the C9 Petropols are 3% and organobentonite is 3.8%
Present invention also offers a kind of preparation method of Road sealant, comprises the steps：
S1, weigh each component by above-mentioned formula；
S2, matrix pitch is warming up to 160 DEG C～170 DEG C, and is stirred continuously, rotating speed is 2000rpm；
S3, be subsequently adding modifying agent stirring melt swollen 30 minutes, add cosolvent, at a temperature of 160 DEG C～170 DEG C stir
45 minutes, rotating speed was 2000rpm；
S4, when being further continued for liter high-temperature to 185 DEG C～195 DEG C, it is slowly added to rubber powder and stirs development 60 minutes, rotating speed
For 1500rpm；
S5, tackifier are added, and stirred 30 minutes, rotating speed is 1500rpm；(being defined by list data)
S6, be eventually adding sulphur-containing stabilizer, and stir 1 hour, form stable mixture (rotating speed is 2000rpm).Fill
After dividing stirring, it is put into holding vessel by being cooled to 150 DEG C and packs, it is close so as to prepare high performance rubber modified asphalt road
Sealing.
The invention has the advantages that：
The present invention has prepared a kind of strong cohesion, low cost, water proofing property, wearability and high-temperature stability, low-temperature flexibility
The excellent rubber modified asphalt Road sealant of property.With reference to JT/T 740-2015《Road-surface heating type fluid sealant》Testing regulations
Require with Testing index, prepared the Asphalt Pavement Road fluid sealant for meeting its code requirement, optimize produced road close
The pavement seam filling technique of sealing.
Specific embodiment
In order that objects and advantages of the present invention become more apparent, the present invention is carried out further with reference to embodiments
Describe in detail.It should be appreciated that specific embodiment described herein is not used to limit this only to explain the present invention
It is bright.
In following examples pitch used be Korea production SK-90 bi tumenf orr oads, fineness be 60 purposes it is waste and old
Tyre rubber powder, modifying agent, cosolvent, tackifier and stabilizer.(table 1)
The Road sealant test material of table 1
Experimental procedure：
S1, the data as described in table 2 weigh each component；
S2, matrix pitch is warming up to 160 DEG C～170 DEG C, and is stirred continuously, rotating speed is 2000rpm；
S3, be subsequently adding modifying agent stirring melt swollen 30 minutes, add cosolvent, at a temperature of 160 DEG C～170 DEG C stir
45 minutes, rotating speed was 2000rpm；
S4, when being further continued for liter high-temperature to 185 DEG C～195 DEG C, it is slowly added to rubber powder and stirs development 60 minutes, rotating speed
For 1500rpm；
S5, tackifier are added, and stirred 30 minutes, rotating speed is 1500rpm；(being defined by list data)
S6, be eventually adding sulphur-containing stabilizer, and stir 1 hour, form stable mixture (rotating speed is 2000rpm).Fill
After dividing stirring, it is put into holding vessel by being cooled to 150 DEG C and packs, it is close so as to prepare high performance rubber modified asphalt road
Sealing
According to JT/T 740-2015《Road-surface heating type fluid sealant》Code requirement, determines its slamp value, cone penetration, softening
Point, cryogenic tensile and elastic restoration ratio.Cone penetration is the evaluation index for judging rubber asphalt soft or hard degree, for showing rubber drip
The blue or green sensitiveness to temperature；General cone penetration value is bigger, shows that rubber asphalt is softer, and denseness is less, and this is more beneficial to construction behaviour
Make.Softening point refers to that under certain condition rubber asphalt reaches temperature during a certain denseness, shows the hot properties of pitch.Stream
Dynamic test is to determine the degree that Road sealant produces trickling in high temperature.Elasticity recovers test and is used for evaluation path fluid sealant pair
The embedded resistivity of the debris such as sandstone.Cryogenic tensile test objective is to test the low temperature anti-cracking performance of Road sealant.
The Optimal Parameters of rubber powder modified asphalt are prepared according to above-mentioned test gained, and will with reference to JT/T740-2015 specifications
Ask, carried out substantial amounts of development test, finally show that preparation meets JT/T 740-2015《Road-surface heating type fluid sealant》Specification will
The optimum proportioning of the three kinds of Road sealants asked, as shown in table 2, its testing result is as shown in table 3.
Table 2 prepares the optimum proportioning of three types Road sealant
The performance indications of the different types of road fluid sealant of table 3
Note：In cryogenic tensile test, high temperature modification, plain edition, the test temperature of low form are respectively：0℃、-10℃、-20
℃；25%th, 50%, 100% amount of tension is respectively 3.75mm, 7.5mm, 15mm.
Rubber powder of waste tire merges under the high temperature conditions with heated bitumen.Containing natural in one side tyre rubber powder
Rubber, synthetic rubber, carbon black, antioxidant, age resister, zinc compound isoreactivity composition, if natural rubber content is high, no
Only be conducive to improving the compatibility of rubber powder and matrix pitch, while the melt and dissolved elastomeric material in pitch can also be lifted to pitch
The modifying function for rising, so as to compensate because high intensity process is to matrix pitch loss of energy, rubber powder particles absorb pitch
In light components volume melt swollen, rubber powder granule mechanical property is improved.On the other hand due to light components reduction in pitch,
Asphalt viscosity increases, and temperature sensitivity is improved.Meanwhile, melt it is swollen during rubber powder granule part occur oxidative degradation, glue
Active component in powder enters pitch colloidal dispersion, is improved asphalt temperature stability；Affecting Road sealant performance
Three principal elements in, the volume of rubber powder is the most key, next to that the addition of cosolvent, is finally reaction temperature.
Between 185 DEG C～195 DEG C, mixing speed is 2000rpm to reaction temperature, and total mixing time is the process conditions of 200min or so
Under, select fineness be 60 mesh rubber powder of waste tire, according to the technical requirements of JT/T 740-2015 adjust modifying agent (5%～
6.5%), the consumption of rubber powder (15%～17%), cosolvent (8～9.2%) and tackifier 4.5～6.8%, can make and meet skill
Above-mentioned three kinds of Road sealants of art index request.
Result of the test shows, using the cone penetration of this formula and the Asphalt Pavement Road fluid sealant of preparation method production,
Softening point, slamp value, elastic restoration ratio, cryogenic tensile all technical reach People's Republic of China's traffic industry standard
JT/T 740-2015《Road-surface heating type fluid sealant》The technical requirements of middle fracture patching material, and with elastic high, caking property
Well, the features such as wearability is strong, cost is relatively low.Can meet road surface bond repeatedly, the demand of Fracture Deformation, and be adapted to the whole nation it is various
Use under temperature environment.
The present invention uses rubber powder of waste tire, not only increases properties of product, reduces product cost, and reduces
Environmental pollution；Stable homogeneous mixture will be formed using cosolvent between modifying agent, rubber powder and pitch so that resin base
Group, rubber powder group and pitch group form stable cross-linked structure, while modifying agent can improve its Pavement Performance such as improves soft
Change point, improve low temperature crack resistance energy etc., new crack can be effectively prevented and produced.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of Road sealant, it is characterised in that be prepared from by the raw material of following mass fraction：
Adjust modifying agent 5%～6.5%, rubber powder 15%～17%, cosolvent 8%～9.2%, tackifier 4.5%～6.8%,
Matrix pitch surplus.
2. a kind of Road sealant as claimed in claim 1, it is characterised in that it is the waste and old wheel of 60 purposes that the rubber powder is fineness
Tire rubber powder.
3. a kind of Road sealant as claimed in claim 1, it is characterised in that the cosolvent is epoxidized soybean oil.
4. a kind of Road sealant as claimed in claim 1, it is characterised in that the regulation modifying agent is SBS modifier.
5. a kind of Road sealant as claimed in claim 1, it is characterised in that the tackifier are C9 Petropols and organic
Bentonite.
6. a kind of Road sealant as claimed in claim 1, it is characterised in that the C9 Petropols are 2% and organic bentonite
Profit soil is 2.5%.
7. a kind of Road sealant as claimed in claim 1, it is characterised in that the C9 Petropols are 2.5% and organic
Bentonite is 3.5%.
8. a kind of Road sealant as claimed in claim 1, it is characterised in that the C9 Petropols are 3% and organic bentonite
Profit soil is 3.8%.
9. a kind of preparation method of Road sealant, it is characterised in that comprise the steps：
S1, the formula as described in claim 1 weigh each component；
S2, matrix pitch is warming up to 160 DEG C～170 DEG C, and is stirred continuously, rotating speed is 2000rpm；
S3, be subsequently adding modifying agent stirring melt swollen 30 minutes, add cosolvent, at a temperature of 160 DEG C～170 DEG C stir 45 points
Clock, rotating speed is 2000rpm；
S4, when being further continued for liter high-temperature to 185 DEG C～195 DEG C, it is slowly added to rubber powder and stirs development 60 minutes, rotating speed is
1500rpm；
S5, tackifier are added, and stirred 30 minutes, rotating speed is 1500rpm；
S6, be eventually adding sulphur-containing stabilizer, and stir 1 hour, form stable mixture (rotating speed is 2000rpm).Fully stir
After mixing, it is put into holding vessel by being cooled to 150 DEG C and packs, so as to prepares high performance rubber modified asphalt road sealing
Glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710012280.1A CN106634823A (en) | 2017-01-09 | 2017-01-09 | Road sealant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710012280.1A CN106634823A (en) | 2017-01-09 | 2017-01-09 | Road sealant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106634823A true CN106634823A (en) | 2017-05-10 |
Family
ID=58843657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710012280.1A Pending CN106634823A (en) | 2017-01-09 | 2017-01-09 | Road sealant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106634823A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110452624A (en) * | 2019-09-10 | 2019-11-15 | 广州市市政工程维修处 | A kind of expansion joints without seals joint sealing material sealant and its preparation method and application |
| CN112322255A (en) * | 2020-11-25 | 2021-02-05 | 新乡市时瑞公路养护技术有限公司 | Hot-melt road sealant and preparation method thereof |
-
2017
- 2017-01-09 CN CN201710012280.1A patent/CN106634823A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110452624A (en) * | 2019-09-10 | 2019-11-15 | 广州市市政工程维修处 | A kind of expansion joints without seals joint sealing material sealant and its preparation method and application |
| CN112322255A (en) * | 2020-11-25 | 2021-02-05 | 新乡市时瑞公路养护技术有限公司 | Hot-melt road sealant and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20170510 |