CN105693143B - High solids content is modified the method that mid temperature pitch prepares City Road Maintenance material - Google Patents
High solids content is modified the method that mid temperature pitch prepares City Road Maintenance material Download PDFInfo
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- CN105693143B CN105693143B CN201610079137.XA CN201610079137A CN105693143B CN 105693143 B CN105693143 B CN 105693143B CN 201610079137 A CN201610079137 A CN 201610079137A CN 105693143 B CN105693143 B CN 105693143B
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
-
- 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
The invention discloses a kind of method that high solids content is modified mid temperature pitch preparation City Road Maintenance material, including lower step：1) it will gather materials and miberal powder is all delivered to and mixed and stirred in storehouse, by Pipeline transport to mixing and stirring in storehouse after high solids content modification mid temperature pitch is heated into 75~90 DEG C；2) gathering materials in storehouse will be mixed and stirred, miberal powder and pitch are mixed into semi-finished product；3) semi-finished product mixed and stirred in storehouse are delivered in finished product heating cabinet；When the temperature of well mixed asphalt is between 80 DEG C~95 DEG C, and during water content ＜ 1% in finished product, complete production.The construction temperature scope for the road maintenance material produced using the present invention is wider, can be constructed under the weather conditions not less than 5 DEG C.
Description
Technical field
The present invention relates to the technology of preparing of the asphalt in field of road, changes in particular to a kind of high solids content
Property mid temperature pitch prepare City Road Maintenance material method.
Background technology
As urban infrastructure construction is quickly grown, the demand of urban highway traffic and also more and more higher is required.Pitch
Road surface is under the comprehensive function of traffic load and climatic effect, and over time, pavement behavior and service ability will be gradual
Ground deteriorates.Rapid economic development in recent years, the volume of traffic is brought to increase rapidly, vehicle maximization, overload are serious, thus bring a system
The disease of row, rut is common are, ftractures, gather around bag, loose, depression, pit etc..In order to keep the good performance in road surface and
Extend its service life, need to use different maintenance measures in each different phase in pavement life cycle.Drip
The maintenance work on blue or green road surface extends its life cycle, and improve noise, vibration etc. pair to the service ability on holding road surface
The pollution of surrounding enviroment plays the role of important.
Asphalt is the general name of the compound mixed and stirred by mineral aggregate and asphalt binder, is a kind of common existing
Pavement maintenance material.It is specific mainly have hot-mix asphalt mixture and cold-repairing material both.Hot-mix asphalt mixture construction temperature
For 135~150 DEG C, cold repairing asphalt mixture construction temperature is usually normal temperature (20 DEG C).
Hot-mix asphalt mixture generally includes to be modified two kinds of compound, common compound, and its actual construction temperature is respectively
145 DEG C or so and 165 DEG C or so.
The characteristics of plain asphalt compound is production, construction temperature requirement height；Hot-mix asphalt mixture construction temperature is 135
~150 DEG C.Existing hot-mix asphalt mixture is used for repairing.When being heated due to the construction of the material, otherwise temperature is too low not
It is easy to construct, causes ageing of asphalt to accelerate or temperature is too high, all influences the performance of compound.Therefore, actual hot asphalt
The road life of compound repairing is typically only 1~2 month.
Because when temperature reaches more than 100 DEG C, pitch begins to aging, the general construction temperature of modified asphalt mixture is
160~180 DEG C, it is easier to quick aging.And in practice of construction, repairing work scale is general all smaller, and maintenance usage amount is also small,
Some pit dosages are less than 1t.This certainly exists repetition high temperature production.160~180 DEG C of construction temperature is also deposited to the engineering time
In certain influence, while quality is also difficult to ensure that, so using less in actual maintenance.
Because the hot-mix asphalt mixture extensive blending station that needs to construct is mixed and stirred, but opening blending station every time needs
A few houres, while blending station is ceaselessly opened, the energy is not only wasted, cost is again high.
《Standard specification for construction and acceptance of highway asphalt pavement》It is required that when hot-mix asphalt mixture is constructed, temperature must not be less than 10 DEG C.
Therefore hot-mix asphalt mixture in the winter time temperature be less than 10 DEG C when, or being unsatisfactory for construction requirement, construction rolling is also difficult to reach
The compactness 98% of code requirement.
Cold repairing asphalt mixture technology can also be used in actual maintenance.Cold repairing asphalt mixture is exactly with foamed asphalt etc.
The compound that asphalt and aggregate for cold-patch are mixed to form.It is mainly used in hole emergency maintenance, plays filling effect.Due to cold-patch
Pitch is more expensive used in material, therefore cost is higher.But the stability of cold repairing asphalt mixture is generally below 5kN, it is difficult to reaches
Road deck is not less than 8kN requirement to asphalt intensity.
Therefore, the long-standing high energy consumption of hot-mix asphalt mixture, the problem of efficiency is low；And low-level, repetition are repaired
Congestion problems caused by and；Also long-standing disposal of pollutants and the health hazard problem to maintenance worker simultaneously.
On the other hand, cold repairing asphalt mixture can not also meet all construction needs.
The problem of City Road Maintenance material and technology are to be solved always, but gratifying technology is there is no up to now
Scheme comes out.
The content of the invention
In order to solve following drawback of the existing asphalt as material for road repair：
1) the heating and thermal insulation temperature of existing hot asphalt is high, produces high temperature ageing problem；
2) existing pitch is mixed and stirred in technique, the disposal of pollutants problem easily caused；
3) existing hot asphalt can not realize that small lot produces, it is not easy to control production cost, the judicial convenience that can not be produced
Problem；
4) in existing hot asphalt production, waste of gathering materials, and waste entrainment problem；
5) temperature is higher in existing hot asphalt production, the health hazard problem to operating personnel；
6) existing road service material, performance is low, grading is poor, and service life is generally some months, even lower.
The present invention provides a kind of high solids content and is modified the method that mid temperature pitch prepares City Road Maintenance material, including lower step
Suddenly：
1) gathering materials different-grain diameter by after corresponding particle diameter and component proportion, it is delivered to and mixes and stirs in storehouse,
By miberal powder by Pipeline transport to mixing and stirring in storehouse；
By Pipeline transport to mixing and stirring in storehouse after high solids content modification mid temperature pitch is heated into 75~90 DEG C；
2) gathering materials in storehouse will be mixed and stirred, miberal powder and pitch are mixed into semi-finished product；
3) semi-finished product mixed and stirred in storehouse are delivered in finished product heating cabinet；
When the temperature of well mixed asphalt is between 80 DEG C~95 DEG C, and during water content ＜ 1% in finished product,
Complete production.
In above-mentioned technical proposal, the heating and temperature control in the step 3) in heating cabinet is between 90~110 DEG C.
In above-mentioned technical proposal, more than 130 DEG C of hot blast is conveyed in the step 3) into heating cabinet.
In above-mentioned technical proposal, the modification mid temperature pitch of the high solids content used, it is made up of following components by mass fraction：
The matrix asphalt of 75~82 parts of solid contents more than 75%：3~7 parts of medium temperature modifying agent, 11~22 parts of water；
Described medium temperature modifying agent is made up of following components by mass fraction：
5~10 part of 18/16 tertiary amine；
5~12 parts of cationic additives, described cationic additive are selected from the chloro- 2- hydroxypropyls-trimethyl ammonium chlorides of 3-
And trimethyl lauryl ammonium chloride；
1~5 part of methanol；
40~50 parts of emulsifying agent, described emulsifying agent are selected from s-B-S, butadiene-styrene rubber, poly- second
Alkene, acrylonitrile-butadiene-styrene copolymer, high polymer polypropylene and polystyrene；
1~3 part of calcium chloride；
5~20 parts of deionized waters.
In above-mentioned technical proposal, the making of the modification mid temperature pitch of the high solids content used comprises the following steps：
1) component than water of medium temperature modifying agent is dissolved in the deionized water no less than 60 DEG C, and be sufficiently mixed
Uniformly；
2) matrix asphalt is heated to more than 150 DEG C；
3) 75 DEG C~95 are maintained the temperature at after mixing medium temperature modifying agent and matrix asphalt and water that step 1) obtains
DEG C, stir；
4) at 90 DEG C, when mixing the viscosity of the modification mid temperature pitch of generation and being less than 3Pas, asphalt production terminates, and obtains
High solids content is modified mid temperature pitch.
Test by actual production, compared with existing hot-mix asphalt mixture production technology, when being produced using the present invention, energy
Energy consumption 35% is enough reduced, pollutant emission reduces 55%.
It can be seen that the present invention can realize the small-sized customization mass production of road maintenance material；And road pavement maintenance intelligence
The supervision of change, use quality, the service efficiency of government fund are further improved, reduce cost, reduce the master of people in settlement process
Sight acts on；The generation of low-level repetition maintenance phenomenon can also be reduced simultaneously.
The construction temperature scope for the road maintenance material produced using the present invention is wider, can be in the weather bar not less than -5 DEG C
Constructed under part.And prior art modified pitch construction temperature cannot be below 10 DEG C of constructions, annual construction days can by contrast
Extend the several months, meet the demand of road maintenance.
Embodiment
The equipment and technique of the present invention are described in further detail below in conjunction with specific embodiment.
The present invention devises a kind of high solids content and is modified the method that mid temperature pitch prepares City Road Maintenance material.
The modification mid temperature pitch of the high solids content (solid content is up to up to more than 75%) used, quality is pressed by following components
Number forms：75~82 parts of matrix pitches：3~7 parts of medium temperature modifying agent, 11~22 parts of water.
Described medium temperature modifying agent is made up of following components by mass fraction：
5~10 part of 18/16 tertiary amine；
5~12 parts of cationic additives, described cationic additive are selected from the chloro- 2- hydroxypropyls-trimethyl ammonium chlorides of 3-
And trimethyl lauryl ammonium chloride；
1~5 part of methanol；
40~50 parts of emulsifying agent, described emulsifying agent are selected from s-B-S, butadiene-styrene rubber, poly- second
Alkene, acrylonitrile-butadiene-styrene copolymer, high polymer polypropylene and polystyrene；
1~3 part of calcium chloride；
5~20 parts of deionized waters.
Described matrix pitch is the matrix asphalt of solid content more than 75%.Various reagents in above-mentioned formula
To be directly chemically commercially available at preparation supplier.
The preparation method that the high solids content is modified mid temperature pitch comprises the following steps：
1) component than water of medium temperature modifying agent is dissolved in the deionized water no less than 60 DEG C, and be sufficiently mixed
Uniformly；
2) matrix asphalt is heated to more than 150 DEG C；
3) 75 DEG C~95 are maintained the temperature at after mixing medium temperature modifying agent and matrix asphalt and water that step 1) obtains
DEG C, stir；
4) at 90 DEG C, when mixing the viscosity of the modification mid temperature pitch of generation and being less than 3Pas, asphalt production terminates, and obtains
High solids content is modified mid temperature pitch.
Mid temperature pitch is modified using above-mentioned high solids content, it is specific as follows when producing the service material used during road construction
Step：
1) gathering materials different-grain diameter by after corresponding particle diameter and component proportion, it is delivered to and mixes and stirs in storehouse；
Gathering materials for different-grain diameter can be stored in the different storage warehouses that gathers materials, and be easy to match；
By miberal powder by Pipeline transport to mixing and stirring in storehouse；
Obtained high solids content is modified after mid temperature pitch is heated to 75~90 DEG C by Pipeline transport to mixing and stirring in storehouse；
2) gathering materials in storehouse will be mixed and stirred, miberal powder and pitch are mixed into semi-finished product；
3) semi-finished product mixed and stirred in storehouse are delivered in finished product heating cabinet；
Heating and temperature control in heating cabinet is between 90~110 DEG C；More than 130 DEG C of hot blast is conveyed into heating cabinet；
When the temperature of well mixed asphalt is between 80 DEG C~95 DEG C, and during water content ＜ 1% in finished product,
Obtain asphalt finished product.
Asphalt can be discharged into finished product transitional storehouse.Control the temperature of finished asphalt compound in finished product transitional storehouse
More than 80 DEG C, it can at least ensure to take consistency, not aging at any time in more than one week.
According to heating cabinet temperature, the wind speed of air blower in wind control system is adjusted in real time, ensures temperature range.Dedusting wind
The pollutants such as moisture, flue dust in the equipment such as machine collection compound reduce these pollutants to environment into Dust recovery bin
Pollution.
It can be mixed and stirred according to repairing needs from inhomogeneous compound, aggregate grading and pitch the bitumen aggregate ratio ginseng of compound
According to《Standard specification for construction and acceptance of highway asphalt pavement》(JTG F40-2004) is designed.
Compared with existing No. 70 conventional A level pitches, the high solids content that the present invention produces is modified producing for mid temperature pitch
The temperature requirement of links during use substantially reduces.
The construction temperature such as table 1 below of common mid temperature pitch compound：The construction temperature scope institute of mid temperature pitch compound
Show, temperature unit is DEG C：
Table 1：The construction temperature scope of mid temperature pitch compound
Other technologies index meets industry specifications《Standard specification for construction and acceptance of highway asphalt pavement》(JTGF40-2004)
With Hubei Province's local regulation《High solids content emulsifying mid temperature pitch pavement technique code》(DB42/T 1045-2015).
It is heated above asphalt temperature with mineral aggregate, it is necessary to will gather materials in existing bituminous mixture, then can just enters
Row mixes and stirs production.The present invention directly mixes and stirs mineral aggregate and gathering materials with pitch, it is not necessary to heating in advance, saves production stage and energy
Source.
, it is necessary to be heated to gathering materials when particularly conventional hot-mix asphalt mixture produces, it is necessary to remove in advance in gathering materials
A large amount of dusts.The present invention is not to heating of gathering materials, it is not required that pretreatment dust.Process is mixed and stirred in conventional pitch compound
In, temperature is higher, pitch heating, aging, then the harmful substance such as a large amount of CO2, NOx, phenylpropyl alcohol compound can volatilize, arrange in pitch
Put, generate a large amount of pollutants.The present invention is considerably reduced under high temperature and produced using directly being mixed and stirred using mid temperature pitch with gathering materials
Raw pollutant.
Just because of this complete equipment is carried out before compound mixes and stirs, it is not necessary to gathering materials, mineral aggregate and pitch heat, Ke Yigen
Factually border demand adjustment feeding coal, start production, facilitates demand at any time.The production of the relatively conventional strike number ton of hot asphalt station one
For amount, the scale is smaller of this complete equipment, also it is relatively easy to operate, convenient production, reduces；Waste.Meanwhile conventional hot asphalt
Compound blending station is before manufacture, it is necessary to which a few houres heat to pitch in advance.Therefore, conventional hot asphalt blending station is not
It can drive to produce at any time；And the cost for opening needs every time is higher.In general, the once start cost of conventional blending station exists
Tens of thousands of members.It is obvious that if carry out small-scale production, open that the benefit of conventional blending station is low, and cost is too high.
Mix and stir demand of the temperature in storehouse only up to pitch.Then semi-finished product transhipment is delivered to finished product heating cabinet
In, finished asphalt compound is made in heating, dehydration.Actual asphalt heating temperature is 75~90 DEG C, is also not reaching to aging temperature,
For basic guarantee during heating is mixed and stirred, pitch do not produce aging.When finished asphalt compound stores, control temperature is 80
More than DEG C, you can ensure storage at least 1 time-of-week, take at any time.Therefore, compared according to material for road repair produced by the present invention
Prior art, it is more durable.Actual tests can ensure that the road of more than 1 year after repairing is still intact.And existing repairing material
Material needs to reprocess again because ageing of asphalt caused by high temperature production is serious after often only repairing half a year.
Test by actual production, compared with existing hot-mix asphalt mixture production technology, when being produced using the present invention, energy
Energy consumption 35% is enough reduced, pollutant emission reduces 55%.
It can be seen that the present invention can realize the small-sized customization mass production of road maintenance material；And road pavement maintenance intelligence
The supervision of change, use quality, the service efficiency of government fund are further improved, reduce cost, reduce the master of people in settlement process
Sight acts on；The generation of low-level repetition maintenance phenomenon can also be reduced simultaneously.
The construction temperature scope for the road maintenance material produced using the present invention is wider, can be in the weather bar not less than -5 DEG C
Constructed under part.And prior art modified pitch construction temperature cannot be below 10 DEG C of constructions, annual construction days can by contrast
Extend the several months, meet the demand of road maintenance.
Claims (2)
1. a kind of high solids content is modified the method that mid temperature pitch prepares City Road Maintenance material, it is characterised in that including lower step
Suddenly：
1) gathering materials different-grain diameter by after corresponding particle diameter and component proportion, it is delivered to and mixes and stirs in storehouse,
By miberal powder by Pipeline transport to mixing and stirring in storehouse；
By Pipeline transport to mixing and stirring in storehouse after high solids content modification mid temperature pitch is heated into 75~90 DEG C；
2) gathering materials in storehouse will be mixed and stirred, miberal powder and pitch are mixed into semi-finished product；
3) semi-finished product mixed and stirred in storehouse are delivered in finished product heating cabinet；
When the temperature of well mixed asphalt is between 80 DEG C~95 DEG C, and during water content ＜ 1% in finished product, complete
Production；
Heating and temperature control in the step 3) in heating cabinet is between 90~110 DEG C；
More than 130 DEG C of hot blast is conveyed in the step 3) into heating cabinet；
The modification mid temperature pitch of the high solids content used, it is made up of following components by mass fraction：75~82 parts of solid contents 75%
Matrix asphalt above：3~7 parts of medium temperature modifying agent, 11~22 parts of water；
Described medium temperature modifying agent is made up of following components by mass fraction：
5~10 part of 18/16 tertiary amine；
5~12 parts of cationic additives, described cationic additive are selected from the chloro- 2- hydroxypropyls-trimethyl ammonium chlorides of 3- and chlorine
Change trimethyldodecane base ammonium；
1~5 part of methanol；
40~50 parts of emulsifying agent, described emulsifying agent are selected from s-B-S, butadiene-styrene rubber, polyethylene, third
Alkene nitrile-BS, high polymer polypropylene and polystyrene；
1~3 part of calcium chloride；
5~20 parts of deionized waters.
2. high solids content according to claim 1 is modified the method that mid temperature pitch prepares City Road Maintenance material, it is special
Sign is：The making of the modification mid temperature pitch of the high solids content used comprises the following steps：
1) component than water of medium temperature modifying agent is dissolved in the deionized water not less than 60 DEG C, and be sufficiently mixed
It is even；
2) matrix asphalt is heated to more than 150 DEG C；
3) 75 DEG C~95 DEG C are maintained the temperature at after mixing medium temperature modifying agent and matrix asphalt and water that step 1) obtains, is stirred
Mix uniformly；
4) at 90 DEG C, when mixing the viscosity of the modification mid temperature pitch of generation and being less than 3Pas, asphalt production terminates, and obtains Gao Gu
Content is modified mid temperature pitch.
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| RU2119465C1 (en) * | 1997-04-14 | 1998-09-27 | Ростовский государственный строительный университет | Asphalt concrete mixture |
| CN1478821A (en) * | 2003-07-10 | 2004-03-03 | 武汉路祥工贸有限公司 | Asphalt road surface normal temperature repairing material and its preparation method |
| CN101302348B (en) * | 2007-05-11 | 2013-05-15 | 深圳市海川实业股份有限公司 | Warm-mix bitumen mixture and preparation therof |
| CN105255205B (en) * | 2015-10-21 | 2017-08-25 | 王立志 | A kind of low-temp recovery asphalt and preparation method thereof |
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Inventor after: Zhang Yong Inventor after: Xiao Mingzhao Inventor after: Lu Ji Inventor after: Huang Kui Inventor after: Wu Dan Inventor after: Chen Shaoping Inventor after: Peng Lei Inventor before: Chen Shaoping |
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Effective date of registration: 20170717 Address after: 430056 Hubei city of Wuhan Province Economic and Technological Development Zone Chunxiao Road No. 6 Applicant after: Wuhan Municipal Construction Group Co., Ltd. Applicant after: WUHAN CHENGSHITONG ENVIRONMENT PROTECTION PITCH ENGINEERING CO., LTD. Address before: 430012, room 6, building 01, building 1-01, Optics Valley core, 111 Optics Valley Road, East Lake New Technology Development Zone, Hubei, Wuhan, China Applicant before: WUHAN CHENGSHITONG ENVIRONMENT PROTECTION PITCH ENGINEERING CO., LTD. |
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