CN110317003A - Saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material and preparation method thereof - Google Patents
Saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material and preparation method thereof Download PDFInfo
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- CN110317003A CN110317003A CN201910564218.2A CN201910564218A CN110317003A CN 110317003 A CN110317003 A CN 110317003A CN 201910564218 A CN201910564218 A CN 201910564218A CN 110317003 A CN110317003 A CN 110317003A
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- China
- Prior art keywords
- butylbenzene
- repairing material
- saturated hydrocarbons
- liquid rubber
- rubber composite
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- 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
-
- 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
- C04B2111/72—Repairing or restoring existing buildings or building materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A kind of saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material and preparation method thereof, be made of by mass fraction the following raw material: bi tumenf orr oad 70# or 90#95~105 part, 0.5 part of surfactant, gather materials 1790~2000 parts at 20~26 parts of modifying agent.After above-mentioned pitch is heated to 100~110 DEG C by its production method, modifying agent, surfactant is added, and stir evenly；Gather materials 100~110 DEG C of heating, be then vented spacious place and wait for that temperature is down to 30~50 DEG C, gather materials to be put into and mix in pot, saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt is added, stirs evenly.This cold-repairing material intensity is suitable with hot asphalt after being formed.This cold-repairing material adhesion strength is strong, can have good caking property with bituminous concrete, cement concrete, metal, wooden road surface, the pit slot after repairing is not likely to produce the bad phenomenons such as fall off, be cracked.Pavement performance and service life are greatly improved than existing cold-repairing material, and cost is lower.
Description
Technical field
The present invention relates to a kind of material of highway engineering maintenance, specifically a kind of high-strength pitch cold-repairing material and its production side
Method.
Background technique
Saturated hydrocarbons is by producing in waste plastic, waste old with butylbenzene liquid rubber composite modified asphalt modifying agent
Methyl styrene based block copolymer (Styreneic Methyl Copolymers), abbreviation SMC, melt-moldable is dispersed in drip
In green class material, have the function of improving asphalt construction workability and pavement performance, may be used as pitch and pitch is mixed
The warm-mixing agent of material is closed, can reduce asphalt mixes and stirs temperature.
Saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material are mainly used for highway and following level highway
Superficial layer pit repairing, it is multiple that existing hot-mix asphalt mixture proportion design scheme is not suitable for saturated hydrocarbons and butylbenzene liquid rubber
Close modified pitch cold-patch.Present existing cold-repairing material viability is generally 3~6 months, and at least 1200 yuan of cost/
Ton；There are low-temperature construction workability it is poor, durability is poor, intensity is low and higher cost the deficiencies of.It is a kind of novel therefore, it is necessary to research and develop
High-strength pitch cold-repairing material.
Summary of the invention
The purpose of the present invention is to provide a kind of saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material, its room temperature
With workability is good, storage stability is high, road intensity is high, pollution-free.
Another object of the present invention provides a kind of saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material production side
Method provides a kind of simple, fast cold-repairing material processing method for the region of different temperatures.
Technical scheme is as follows:
A kind of saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material, according to the mass fraction by the following raw material structure
At:
Bi tumenf orr oad 70# or bi tumenf orr oad 90#95~105 part, 20~26 parts of modifying agent, surfactant
0.5 part, gather materials 1790~2000 parts.
Above-mentioned modifying agent is 55~65 parts of cyclooctane, 6~10 parts of modified epoxy glue, 0.6~1 part of dispersing agent, idol
5~10 parts of agent of connection.
Above-mentioned surfactant is a kind of nonionic surface active agent, is had to the very strong functional group of water affinity,
Emulsifying capacity is higher.
Above-mentioned proportion of gathering materials are as follows: 5~10mm of building stones partial size: 0~3mm of building stones partial size: limestone mineral powder=80: 17: 3.
A kind of production method of saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material, it is by following steps structure
At:
A, saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt are prepared
After aforementioned proportion bi tumenf orr oad 70# or 90# are heated to 100~110 DEG C, it is added and is modified by said ratio
Agent, surfactant, and stir evenly；
B, the production gathered materials
The building stones that partial size is 0~3mm of 5~10mm and partial size are added in baking oven, moisture removal, stone are removed in 100~110 DEG C of heating
Expect that moisture content less than 0.3%, is placed on spacious place to temperature and is down to 30~50 DEG C after dedusting, to prevent building stones overheat from leading to modifying agent
It volatilizees too fast, proportion of gathering materials are as follows: 5~10mm of building stones partial size: 0~3mm of building stones partial size: limestone mineral powder=80: 17: 3；
C, saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material produce
30~50 DEG C of step B are gathered materials to be put into and is mixed in pot, saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt is added,
It stirs evenly；
D, the packaging of saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material, storage
As worker or mechanical pack are organized in production immediately, packaging bag requires internal double layers or three layers, wherein there is one layer of modeling
Material packaging, prevents run-down mixture from contacting with air, it is ensured that be fully sealed and do not contact with air；Packaged cold-repairing material is placed on room
Interior storage not accumulate storage, agglomerate too early to prevent cold-repairing material.
The present invention has the advantages that 1, this cold-repairing material needs to be modified dose of health certain time volatilization, intensity is gradually formed,
Intensity is suitable with hot asphalt after being formed.This cold-repairing material adhesion strength is strong, with bituminous concrete, cement concrete, metal, wooden road
Can there be good caking property in face, and the pit slot after repairing is not likely to produce the bad phenomenons such as fall off, be cracked, and repair without repeating.With
Other tradition cold-repairing materials are compared, and pavement performance and service life greatly improve, and cost is lower, and cost price is not higher than
900 yuan/ton.2, it can store for a long time in confined conditions, cold-repairing material can be used as needed not by weather and pit slot at 30~60 DEG C
Size limitation, heating and stirring, remaining material continue to be sealed when use, can continue to use in repairing next time, avoid wave
Take.3, production method of the invention is not necessarily to special process and equipment, can complete to give birth to using the original equipment of common mixing station
It produces, it is not necessary that bavin Water Oil Or Gas is added, has many advantages, such as environment friendly and pollution-free, and production process simplicity, fast.4, the road of cold asphalt mixture
It is suitable with hot-patch material with performance, it can be widely applied to the roads such as highway, ordinary highway, town road, airport, bridge, tunnel
The repairing and maintenance in face, and durability is up to 1~2 year, even more than traditional cold-repairing material.
Specific embodiment
Feature of the invention and other correlated characteristics are made further specifically below by way of specific ingredient and production process
It is bright, specific example is provided, in order to the understanding of researcher of the same trade, concrete operations are as follows:
Embodiment 1:
70#100 parts of bi tumenf orr oad, 0.5 part of surfactant, gathers materials 1800 parts at 20 parts of modifying agent.
Dispersing agent in modifying agent is glycerin monostearate, and the coupling agent in modifying agent is that the titanate esters of corrdination type are coupled
Agent；Surfactant is polyoxyethylene carboxylate.
Production method
A, saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt are prepared
Bi tumenf orr oad 70#, above-mentioned modifying agent and surfactant are weighed respectively in the ratio of embodiment 1, are heated to
After 105 DEG C, modifying agent, surfactant is added, and stir evenly；
B, the production gathered materials
The building stones that partial size is 0~3mm of 5~10mm and partial size are added in baking oven, heat 110 DEG C of removing moisture, building stones contain
Water rate is placed on spacious place to temperature and is down to 30~50 DEG C less than 0.3% after dedusting, to prevent building stones overheat from modifying agent being caused to volatilize
It is too fast, proportion of gathering materials are as follows: building stones partial size (5~10): building stones partial size (0~3): limestone mineral powder=80: 17: 3, drying of gathering materials,
Clean, free from admixture；
C, saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material produce
Pot, filling saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt, side are mixed into 30~50 DEG C of additions of gathering materials of step B
Charging side, which rolls, mixes pot, pays attention to not needing igniting heating at this time, bitumen aggregate ratio 6.7%, mix is accomplished to mix without grey material without isolation
It closes uniform；It can control drop temperature at this time, can directly pack packaging at 50 DEG C or less；
D, three layers are packed, packaging bag is inside and outside two layers bag, then plus a plastic inner bag, sealing is tight, completely cuts off air；Packet
The cold-repairing material installed, winter are stored in heating storehouse and take at any time, and no heating storehouse storage need to preheat when taking or other are done
Method heating.Packed cold-repairing material cannot be superimposed storage, avoid being compacted agglomeration and pave difficulty.
Embodiment 2
90#100 parts of bi tumenf orr oad, 0.5 part of surfactant, gathers materials 1800 parts at 23 parts of modifying agent.
Dispersing agent in modifying agent is one or both of glyceryl tristearate, and the coupling agent in modifying agent is coordination
The titanate coupling agent of type；Surfactant is polyoxyethylene carboxylate.
Embodiment 3
90#100 parts of bi tumenf orr oad, 0.5 part of surfactant, gathers materials 2000 parts at 26 parts of modifying agent.
Dispersing agent in modifying agent is glycerin monostearate, and the coupling agent in modifying agent is that the titanate esters of corrdination type are coupled
Agent；Surfactant is polyoxyethylene carboxylate.
The production method of embodiment 2 and embodiment 3 is same as Example 1 in addition to ingredient.
Gather materials proportion
According to each shelves gather materials screening result carry out final gradation, calculated result such as the following table 1:
Each shelves of table 1 gather materials screening result carry out gradation
Modifying agent is inflammable thing, is transporting and is preparing in production process and to keep fire away, is preventing open fire and smoking, it is necessary to match
Standby safety fire fighting equipment.
Application method
Indoor Marshall Test intensity is generally 3~5kN, since saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt are cold
Feed supplement will be after certain time health, and modifying agent gradually forms intensity by volatilization, and after cold-repairing material intensity is formed and heat mixes drip
Green intensity is suitable.
Finished product cold-repairing material after production should ensure that material temperature is used above at 20 DEG C when in use, can use alcohol blast burner when necessary
Or hot water carries out surface heating.
The performance test of 2 cold-repairing material of embodiment
Detection method carries out correlation test detection according to " Asphalt Pavement Construction Technique specification " (JTG F40-2004).Tradition
Cold-repairing material and the novel cold-repairing material items Testing index of the present invention see the table below 2:
The every Testing index comparison of table 2
Note:
1. cohesiveness test method: cold asphalt mixture 800g being fitted into Marshall die trial, is put into 4 DEG C of thermostatic chambers and keeps the temperature 2-
3h, it is two-sided after taking-up to hit real 5 times, it is placed on standard screen after demoulding, it is it is upright and roll around test specimen 20 times along screen frame, it breaks
Loss rate is not more than 40%.
2. Marshall experimental method: weighing mixture 1180g, (height 64.5mm after reality is hit in guarantee, and material weight can be according to working as
Ground building stones situation adjustment, generally in 1080~1180g) it is fitted into die trial at normal temperature, it is two-sided respectively to hit 100 times in fact, together with die trial
At room temperature health for 24 hours, after demoulding under the conditions of outdoor ventilation health 3 days, put health 30min in 60 DEG C of thermostatic water baths, then into
Row Marshall Test.
3. workability is tested: -10 DEG C of refrigerators of warp keep (cold for winter without obvious caking phenomenon for 24 hours in a loose state
Cold season section).
4. Water Resistance Test: being tested by mixture water-boiling method or water seaoning.
Claims (5)
1. a kind of saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material, it is characterised in that: according to the mass fraction by such as
Lower raw material is constituted:
90 #95~105 part bi tumenf orr oad 70# or bi tumenf orr oad, 20~26 parts of modifying agent, surfactant 0.5
Part is gathered materials 1790~2000 parts.
2. saturated hydrocarbons according to claim 1 and butylbenzene liquid rubber composite modified asphalt cold-repairing material, it is characterised in that: it
Modifying agent be 55~65 parts of cyclooctane, 6~10 parts of modified epoxy glue, 0.6~1 part of dispersing agent, 5~10 parts of coupling agent.
3. saturated hydrocarbons according to claim 1 and butylbenzene liquid rubber composite modified asphalt cold-repairing material, it is characterised in that: it
Surfactant be a kind of nonionic surface active agent, have to the very strong functional group of water affinity, emulsifying capacity is higher.
4. saturated hydrocarbons according to claim 1 and butylbenzene liquid rubber composite modified asphalt cold-repairing material, it is characterised in that: it
Proportion of gathering materials are as follows: 5~10mm of building stones partial size: 0~3mm of building stones partial size: limestone mineral powder=80: 17: 3.
5. the production method of saturated hydrocarbons according to claim 1 and butylbenzene liquid rubber composite modified asphalt cold-repairing material,
Be characterized in that: it is made of following steps:
A, saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt are prepared
After aforementioned proportion bi tumenf orr oad 70# or 90# are heated to 100~110 DEG C, modifying agent, table is added by said ratio
Face activating agent, and stir evenly；
B, the production gathered materials
The building stones that partial size is 0~3mm of 5~10mm and partial size are added in baking oven, moisture removal is removed in 100~110 DEG C of heating, and building stones contain
Water rate is placed on spacious place to temperature and is down to 30~50 DEG C less than 0.3% after dedusting, to prevent building stones overheat from modifying agent being caused to volatilize
It is too fast, proportion of gathering materials are as follows: 5~10mm of building stones partial size: 0~3mm of building stones partial size: limestone mineral powder=80: 17: 3；
C, saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material produce
30~50 DEG C of step B are gathered materials to be put into and is mixed in pot, saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt, stirring is added
Uniformly；
D, the packaging of saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material, storage
As production packs immediately, packaging bag requires internal double layers or three layers, wherein there is one layer of plastics package, it is ensured that be fully sealed
It is not contacted with air；Packaged cold-repairing material is placed on indoor storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910564218.2A CN110317003A (en) | 2019-06-15 | 2019-06-15 | Saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material and preparation method thereof |
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| CN201910564218.2A CN110317003A (en) | 2019-06-15 | 2019-06-15 | Saturated hydrocarbons and butylbenzene liquid rubber composite modified asphalt cold-repairing material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112341046A (en) * | 2020-10-29 | 2021-02-09 | 四川中广建材有限公司 | Novel asphalt cold-patch material and preparation method thereof |
| CN112761040A (en) * | 2021-02-20 | 2021-05-07 | 内蒙古自治区交通建设工程质量监督局 | Prefabricated asphalt pavement block and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3263741B2 (en) * | 1992-07-28 | 2002-03-11 | コニシ株式会社 | Polymer / asphalt modified cement mortar composition |
| CN105672078A (en) * | 2016-01-25 | 2016-06-15 | 新疆富翔交通工程材料有限公司 | Winter construction method of styreneic methyl copolymers (SMC) normal-temperature modified asphalt road surface |
| 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 |
| CN107814512A (en) * | 2017-06-16 | 2018-03-20 | 宁夏睿泰节能建筑技术推广有限公司 | A kind of asphalt cold repairing gathers materials and preparation method thereof |
| CN108034268A (en) * | 2017-12-26 | 2018-05-15 | 长沙理工大学 | Asphalt cold repairing liquid and preparation method thereof |
| CN109161164A (en) * | 2018-08-07 | 2019-01-08 | 内蒙古自治区交通建设工程质量监督局 | Ultra-thin wearing layer room temperature asphalt modifier and preparation method thereof |
-
2019
- 2019-06-15 CN CN201910564218.2A patent/CN110317003A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3263741B2 (en) * | 1992-07-28 | 2002-03-11 | コニシ株式会社 | Polymer / asphalt modified cement mortar composition |
| CN105672078A (en) * | 2016-01-25 | 2016-06-15 | 新疆富翔交通工程材料有限公司 | Winter construction method of styreneic methyl copolymers (SMC) normal-temperature modified asphalt road surface |
| 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 |
| CN107814512A (en) * | 2017-06-16 | 2018-03-20 | 宁夏睿泰节能建筑技术推广有限公司 | A kind of asphalt cold repairing gathers materials and preparation method thereof |
| CN108034268A (en) * | 2017-12-26 | 2018-05-15 | 长沙理工大学 | Asphalt cold repairing liquid and preparation method thereof |
| CN109161164A (en) * | 2018-08-07 | 2019-01-08 | 内蒙古自治区交通建设工程质量监督局 | Ultra-thin wearing layer room temperature asphalt modifier and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112341046A (en) * | 2020-10-29 | 2021-02-09 | 四川中广建材有限公司 | Novel asphalt cold-patch material and preparation method thereof |
| CN112761040A (en) * | 2021-02-20 | 2021-05-07 | 内蒙古自治区交通建设工程质量监督局 | Prefabricated asphalt pavement block and manufacturing method thereof |
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