CN111849179A - Micro-surfacing emulsified asphalt suitable for low-temperature construction at night and preparation method and application thereof - Google Patents
Micro-surfacing emulsified asphalt suitable for low-temperature construction at night and preparation method and application thereof Download PDFInfo
- Publication number
- CN111849179A CN111849179A CN202010528503.1A CN202010528503A CN111849179A CN 111849179 A CN111849179 A CN 111849179A CN 202010528503 A CN202010528503 A CN 202010528503A CN 111849179 A CN111849179 A CN 111849179A
- Authority
- CN
- China
- Prior art keywords
- parts
- micro
- surfacing
- asphalt
- low
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2395/00—Bituminous materials, e.g. asphalt, tar or pitch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2409/06—Copolymers with styrene
- C08J2409/08—Latex
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2495/00—Bituminous materials, e.g. asphalt, tar or pitch
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides micro-surfacing emulsified asphalt suitable for low-temperature construction at night and a preparation method and application thereof, and the micro-surfacing emulsified asphalt suitable for low-temperature construction at night is prepared from the following raw materials in parts by weight: 50-65 parts of petroleum asphalt, 0.5-10 parts of emulsifier, 2-6 parts of warm mixing agent, 35-50 parts of water, 2-10 parts of modified latex and 2-10 parts of additive. The emulsified asphalt and the mixture prepared by the invention are particularly suitable for road night construction application, effectively solve the technical problems of low micro-surfacing demulsification speed and long maintenance time caused by low temperature and high humidity at night and are difficult to be suitable for highway night construction in Beijing areas, and the road surface has good seepage-proofing capacity, wear-resisting capacity and anti-skidding capacity, good driving service performance and can greatly improve the service life.
Description
Technical Field
The invention belongs to the technical field of highway maintenance, and particularly relates to micro-surfacing emulsified asphalt suitable for low-temperature construction at night, and a preparation method and application thereof.
Background
At present, most roads in China enter a maintenance period in succession, and as the traffic volume of heavy vehicles is increased day by day, the traffic load pressure is heavier, the anti-skid performance of a plurality of road surfaces is obviously insufficient, the wear of road surfaces is serious, and the anti-skid performance of the road surfaces is insufficient. The micro-surfacing technology is an economical, quick and efficient pavement maintenance technology, has the advantages of water resistance, skid resistance, wear resistance, pavement integrity and attractiveness improvement and the like, and is widely applied to the field of pavement maintenance at home and abroad at present, and particularly has a good application effect on highway sections with large vehicle load. But the forming process of the mixture is complex, and the chemical reaction between the emulsified asphalt and the aggregate is integrated, so that the emulsified asphalt is easily influenced by external environmental conditions in the construction and use process, wherein the most important influencing factor is the temperature.
The maintenance status of the highway pavement in China is good, but the traffic volume is large, and semi-closed or fully-closed maintenance construction cannot be carried out at any time, so that construction can be carried out only at night with relatively small traffic flow. The micro-surfacing technology has the advantages that the micro-surfacing demulsification speed is low and the health preserving time is long due to low temperature and high humidity at night, and the application of the traditional micro-surfacing material in regional maintenance is restricted, so that the micro-surfacing technology which is suitable for the night environment and can open traffic rapidly is urgently needed to be developed.
The Chinese patent with the patent application number of CN201610911463.2 discloses modified emulsified asphalt, a cold-patch material containing the emulsified asphalt and a preparation method thereof, wherein the modified emulsified asphalt comprises the following components in parts by mass: 35-55 parts of petroleum asphalt, 1-3 parts of emulsifier, 30-50 parts of water and 1-3 parts of modifier; the petroleum asphalt is 70# or 90# emulsifiable asphalt; the emulsifier is an anionic asphalt emulsifier BH-Y; the modifier is water-soluble acrylic resin. Compared with common asphalt, the modified emulsified asphalt provided by the invention has greatly increased viscosity, and can be applied to cold patching materials to improve the adhesion performance of the cold patching materials and the pavement. However, the patent does not solve the problems of low demulsification speed, long curing time and the like.
The Chinese invention patent with the patent application number of CN201811612685.X discloses a special high-solid-content emulsified asphalt for pavement sealing and a preparation and construction method thereof, the emulsified asphalt is prepared from common asphalt, an asphalt additive, an emulsifier, a modifier, water and a pH regulator, and the preparation steps are as follows: heating common asphalt, adding an asphalt additive into the common asphalt according to a proportion, and uniformly stirring to obtain a mixture of the asphalt and the asphalt additive; preparing an aqueous solution from an emulsifier, adding a modifier to prepare an emulsifier soap solution, adjusting the pH value of the emulsifier soap solution by using a pH regulator, and then heating; the emulsified asphalt finished product is obtained by sequentially passing the emulsifier soap solution and the mixture of asphalt and asphalt additive through a colloid mill and grinding, but the patent does not solve the problems of being not suitable for low-temperature construction and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention is particularly suitable for road night construction application, effectively solves the technical problems of low micro-surfacing demulsification speed and long maintenance time caused by low temperature and high humidity at night and is difficult to be suitable for highway night construction in Beijing areas, and the pavement has good water seepage resistance, wear resistance and skid resistance, good driving use performance and can greatly improve the service life of the pavement.
The technical scheme of the invention is as follows: the micro-surfacing emulsified asphalt suitable for low-temperature construction at night is prepared from the following raw materials in parts by weight: 50-65 parts of petroleum asphalt, 0.5-10 parts of emulsifier, 2-6 parts of warm mixing agent, 35-50 parts of water, 2-10 parts of modified latex and 2-10 parts of additive.
Preferably, the feed is prepared from the following raw materials in parts by weight: 55-60 parts of petroleum asphalt, 2-8 parts of emulsifier, 3-5 parts of warm mixing agent, 40-45 parts of water, 4-8 parts of modified latex and 4-8 parts of additive.
In any of the schemes, the traditional Chinese medicine composition is preferably prepared from the following raw materials in parts by weight: 50 parts of petroleum asphalt, 0.5 part of emulsifier, 2 parts of warm mixing agent, 35 parts of water, 2 parts of modified latex and 2 parts of additive.
In any of the schemes, the traditional Chinese medicine composition is preferably prepared from the following raw materials in parts by weight: 60 parts of petroleum asphalt, 5 parts of emulsifier, 4 parts of warm mixing agent, 42 parts of water, 6 parts of modified latex and 6 parts of additive.
In any of the schemes, the traditional Chinese medicine composition is preferably prepared from the following raw materials in parts by weight: 65 parts of petroleum asphalt, 10 parts of emulsifier, 6 parts of warm mixing agent, 50 parts of water, 10 parts of modified latex and 10 parts of additive.
In any of the above embodiments, the petroleum asphalt is preferably at least one of 70# petroleum asphalt, 90# petroleum asphalt, or 110# petroleum asphalt.
Preferably in any of the above embodiments, the emulsifier is a cationic emulsifier.
In any of the above embodiments, preferably, the warm-mix agent is a Cecabase RT surfactant type warm-mix agent. The physical and chemical indexes of the warm-mixing agent are as follows:
preferably in any of the above embodiments, the modified latex is SBR latex.
In any of the above embodiments, preferably, the additive is at least one of lake asphalt or rock asphalt.
The invention also discloses a preparation method of the micro-surfacing emulsified asphalt suitable for low-temperature construction at night, which comprises the following steps:
step (1), heating common petroleum asphalt, adding a warm mixing agent, and mixing and stirring;
preparing an emulsifier into an aqueous solution, adding modified latex, heating the prepared soap liquid, and adjusting the pH value;
and (3) shearing the soap liquid obtained in the step (2), then pouring the hot-melt asphalt and the additives stirred in the step (1) into the soap liquid in the shearing in sequence, and obtaining the emulsified asphalt after shearing. The steps (1) to (3) are sequentially performed.
Preferably, the modified asphalt is prepared from the following raw materials, by weight, 50-65 parts of petroleum asphalt, 0.5-10 parts of an emulsifier, 2-6 parts of a warm mixing agent, 35-50 parts of water, 2-10 parts of modified latex and 2-10 parts of an additive.
Preferably, the feed is prepared from the following raw materials in parts by weight: 55-60 parts of petroleum asphalt, 2-8 parts of emulsifier, 3-5 parts of warm mixing agent, 40-45 parts of water, 4-8 parts of modified latex and 4-8 parts of additive.
In any of the schemes, the traditional Chinese medicine composition is preferably prepared from the following raw materials in parts by weight: 50 parts of petroleum asphalt, 0.5 part of emulsifier, 2 parts of warm mixing agent, 35 parts of water, 2 parts of modified latex and 2 parts of additive.
In any of the schemes, the traditional Chinese medicine composition is preferably prepared from the following raw materials in parts by weight: 60 parts of petroleum asphalt, 5 parts of emulsifier, 4 parts of warm mixing agent, 42 parts of water, 6 parts of modified latex and 6 parts of additive.
In any of the schemes, the traditional Chinese medicine composition is preferably prepared from the following raw materials in parts by weight: 65 parts of petroleum asphalt, 10 parts of emulsifier, 6 parts of warm mixing agent, 50 parts of water, 10 parts of modified latex and 10 parts of additive.
In any scheme, the common asphalt in the step (1) is preferably heated to 140-160 ℃, and a warm-mixing agent is added, mixed and stirred for 3 minutes.
In any of the above schemes, preferably, the soap solution in the step (2) is heated to 45-70 ℃, and the pH of the soap solution is adjusted to 1.5-5.5 by acid.
In any of the above schemes, preferably, the soap solution in the step (2) is heated to 45 ℃, and the pH of the soap solution is adjusted to 1.5 by acid.
In any of the above embodiments, preferably, the soap solution in step (2) is heated to 55 ℃, and the pH of the soap solution is adjusted to 2 by using acid.
In any of the above embodiments, preferably, the soap solution in step (2) is heated to 60 ℃, and the pH of the soap solution is adjusted to 4 by using acid.
In any of the above embodiments, preferably, the soap solution in step (2) is heated to 70 ℃, and the pH of the soap solution is adjusted to 5.5 by using acid.
In any of the above schemes, preferably, in the step (3), the hot-melt asphalt and the additive stirred in the step (1) are sequentially poured into the soap solution in shearing, and are stirred manually, and the emulsified asphalt is obtained after shearing for 15 min.
The emulsified asphalt is used for preparing a micro-surfacing mixture, and the micro-surfacing mixture is prepared from the following raw materials in parts by weight: 6-10 parts of emulsified asphalt, 2-10 parts of inorganic filler and 90-100 parts of aggregate, wherein the emulsified asphalt is prepared by the method. And mixing the emulsified asphalt, the inorganic filler and the aggregate for 30min to obtain a micro-surfacing mixture, wherein the cohesive force of the micro-surfacing mixture for paving is not lower than 2.5 N.m. 69221095
Preferably, the inorganic filler is at least one of fly ash, lime or cement.
In any of the above schemes, preferably, the micro-surfacing mixture is prepared from the following raw materials in parts by weight: 7-9 parts of emulsified asphalt, 3-8 parts of inorganic filler and 92-98 parts of aggregate.
In any of the above schemes, preferably, the micro-surfacing mixture is prepared from the following raw materials in parts by weight: 6 parts of emulsified asphalt, 2 parts of inorganic filler and 90 parts of aggregate.
In any of the above schemes, preferably, the micro-surfacing mixture is prepared from the following raw materials in parts by weight: 8 parts of emulsified asphalt, 4 parts of inorganic filler and 95 parts of aggregate.
In any of the above schemes, preferably, the micro-surfacing mixture is prepared from the following raw materials in parts by weight: 9 parts of emulsified asphalt, 9 parts of inorganic filler and 98 parts of aggregate.
In any of the above schemes, preferably, the micro-surfacing mixture is prepared from the following raw materials in parts by weight: 10 parts of emulsified asphalt, 10 parts of inorganic filler and 100 parts of aggregate.
In any of the above schemes, preferably, the aggregate is a mixed aggregate of basalt and limestone, and the particle size of the aggregate is 0-10 mm.
In any of the above schemes, preferably, the aggregate with the grain size of 5-10mm adopts basalt, and the aggregate with the grain size of 0-3mm and 3-5mm adopts limestone.
Has the advantages that:
(1) according to the micro-surfacing emulsified asphalt, the slow-breaking quick-setting cationic emulsifier is adopted during preparation, the additive and the warm mixing agent are added into the matrix asphalt in advance, under the comprehensive action, the emulsion breaking speed of the emulsion material is high, the early strength of the formed mixture is high, construction can be carried out at the temperature of more than 5 ℃, and the adhesion between the micro-surfacing material and the original pavement stone can be enhanced by the emulsion material, so that the effect of enhancing the adhesion with the stone is achieved. The warm-mixing agent contains special hydrophilic groups, so that the asphalt can well wrap the aggregate at low temperature. In addition, the modified latex and the additive enable the emulsion part in the micro-surfacing material to better permeate into the gaps of the pavement, so that the micro-surfacing emulsified asphalt has good water sealing and adhering effects in the gaps, and the anti-sliding and anti-seepage performance of the surface layer is improved.
(2) The coal ash, lime or cement are added into the micro-surfacing mixture instead of mineral powder, so that the micro-surfacing mixture is fully fused and has high stability. The mineral powder adopted by the common micro-surfacing material can ensure construction at the ambient temperature of more than 10 ℃, cannot be rapidly demulsified and molded after being paved, is influenced by the ambient temperature and humidity, and is easy to cause the strength of the mixture to fail to reach the index regulation under the low-temperature condition at night. Therefore, the material can effectively shorten the construction period, improve the early strength of the mixture and open traffic earlier, thereby meeting the construction conditions of urban roads at night and having good economic and social benefits.
Detailed Description
In order to further understand the technical features of the present invention, the present invention is described in detail with reference to the specific embodiments below. The embodiments are given by way of illustration only and not by way of limitation, and any insubstantial modifications, based on the present disclosure, may be made by those skilled in the art without departing from the scope of the present disclosure.
Example 1
A preparation method of micro-surfacing emulsified asphalt suitable for low-temperature construction conditions at night comprises the following raw materials in parts by mass: 50 parts of petroleum asphalt, 1 part of emulsifier, 40 parts of water, 2 parts of warm mixing agent, 2 parts of modified latex and 3 parts of additive. The micro-surfacing mixture for paving comprises the following steps:
(1) heating the 90# petroleum asphalt to 160 ℃, adding a Cecabase RT surfactant warm mixing agent, and mixing and stirring for 3 minutes;
(2) adding MQK-3 type cationic emulsifier into water to prepare an aqueous solution, then adding SBR modified latex, heating the prepared soap solution to 65 ℃, and finally adjusting the pH of the soap solution to 2.5 by using acid;
(3) rapidly pouring the soap solution into an emulsifying machine colloid mill for shearing, then sequentially pouring the hot-melt asphalt and the rock asphalt additive which are stirred in the step (1) into the sheared soap solution, and assisting in manual stirring, and shearing for 15min to obtain emulsified asphalt;
(4) Uniformly stirring 6 parts by weight of emulsified asphalt, 90 parts by weight of aggregate and 2 parts by weight of cement filler to obtain a micro-surfacing mixture for paving; the aggregate is mixed aggregate of basalt and limestone, wherein the aggregate with the grain size of 5-10mm adopts basalt, and the aggregate with the grain size of 0-3mm and 3-5mm adopts limestone.
(5) Cleaning loose materials, soil and weeds on the road surface, removing impurities and determining a direction control line;
(6) aligning the prepared micro-surfacing mixture to a marked line, adjusting the height of a spreading device and the discharging angle of the mixture, starting the spreading device, spreading the low-temperature micro-surfacing material on the road surface at night, adjusting the spreading device in the advancing process of a spreading box to keep a vehicle moving at a constant speed until the uniform spreading is finished, wherein the temperature of the construction environment is not lower than 5 ℃, and after 30min, the cohesive force of the spread micro-surfacing material is not lower than 2.5 N.m;
(7) and opening traffic after the cultivation.
In order to verify the effect of the patent, the material with the proportion in example 1 and low temperature at night on the micro-surfacing is adopted for actual paving, the test is carried out according to the test regulation of asphalt and asphalt mixture for road engineering E20, and the detection results are shown in the following table 1:
TABLE 1 micro-surfacing mixture Performance test indexes
| Detecting items | Actual measurement result |
| Forming speed (30min cohesion, N. m) | 2.7 |
| Coefficient of sliding resistance of not less than | 0.53 |
| Water permeability coefficient (mL/min) | 6 |
| Construction depth (mm) | 0.86 |
| Flatness (mm) | 1.4 |
Example 2
The micro-surfacing emulsified asphalt suitable for low-temperature construction at night comprises the following raw materials in parts by mass: 52 parts of petroleum asphalt, 2 parts of emulsifier, 35 parts of water, 4 parts of warm mixing agent, 3 parts of modified latex and 2 parts of additive.
The specific implementation process is basically the same as that of the embodiment 1, and the difference is that: the raw materials are slightly different in mass components, and in the step 4, 2 parts of inorganic filler, 10 parts of emulsified asphalt and 95 parts of aggregate are mixed and stirred.
In order to verify the effect of the patent, the low-temperature micro-surfacing mixed material prepared according to the proportion in the embodiment 2 is adopted for actual paving, the test is carried out according to the test procedure for asphalt and asphalt mixture in road engineering E20, and the detection results are shown in the table 2:
TABLE 2 Performance test indexes of low-temperature micro-surfacing mixed materials
Example 3
The micro-surfacing emulsified asphalt suitable for low-temperature construction at night comprises the following raw materials in parts by mass: 50 parts of petroleum asphalt, 5 parts of emulsifier, 40 parts of water and 5 parts of modified latex.
The specific implementation process is basically the same as that of the embodiment 1, and the difference is that: the addition amounts of the emulsifier and the modified latex are slightly different, no warm mixing agent is added in the step (1), and no inorganic filler is added in the step (4).
In order to verify the effect of the patent, the low-temperature micro-surfacing mixture prepared according to the proportion in example 3 is adopted for actual paving, the test is carried out according to the test procedure for asphalt and asphalt mixtures for road engineering E20, and the detection results are shown in Table 3:
TABLE 3 Performance test indexes of low-temperature micro-surfacing mixture
| Detecting items | Actual measurement result |
| Forming speed (30min cohesion, N. m) | 1.8 |
| Coefficient of sliding resistance of not less than | 0.51 |
| Water permeability coefficient (mL/min) | 5 |
| Construction depth (mm) | 0.62 |
| Flatness (mm) | 1.8 |
As can be seen from tables 1, 2 and 3 above: based on the micro-surfacing mixture suitable for low-temperature construction used in the foregoing examples 1 and 2, different material proportions are adopted, and the molding speed, the slip resistance, the anti-permeability performance, the structural depth and the flatness all meet the standard requirements, but the test result of the micro-surfacing mixture prepared in the example 3 does not have the construction usability in the low-temperature environment at night.
Example 4
A micro-surfacing emulsified asphalt suitable for low-temperature construction at night is similar to that in example 1, except that the micro-surfacing emulsified asphalt is prepared from the following raw materials in parts by weight: 50 parts of petroleum asphalt, 0.5 part of emulsifier, 2 parts of warm mixing agent, 35 parts of water, 2 parts of modified latex and 2 parts of additive.
Example 5
A micro-surfacing emulsified asphalt suitable for low-temperature construction at night is similar to that in example 1, except that the micro-surfacing emulsified asphalt is prepared from the following raw materials in parts by weight: 60 parts of petroleum asphalt, 5 parts of emulsifier, 4 parts of warm mixing agent, 42 parts of water, 6 parts of modified latex and 6 parts of additive.
Example 6
A micro-surfacing emulsified asphalt suitable for low-temperature construction at night is similar to that in example 1, except that the micro-surfacing emulsified asphalt is prepared from the following raw materials in parts by weight: 65 parts of petroleum asphalt, 10 parts of emulsifier, 6 parts of warm mixing agent, 50 parts of water, 10 parts of modified latex and 10 parts of additive.
Example 7
A micro-surfacing mixture suitable for low-temperature construction at night is similar to that of example 1, except that in the step (1), common asphalt is heated to 140 ℃, a warm-mixing agent is added, and the mixture is mixed and stirred for 3 minutes.
Example 8
A micro-surfacing mixture suitable for low-temperature construction at night is similar to that of example 1, except that in the step (1), ordinary asphalt is heated to 150 ℃, a warm-mixing agent is added, and the mixture is mixed and stirred for 3 minutes.
Example 9
A micro-surfacing compound suitable for low temperature construction at night, similar to example 1, except that in step (2) the soap solution was heated to 45 ℃ and the pH of the soap solution was adjusted to 1.5 with acid.
Example 10
A micro-surfacing compound suitable for low temperature construction at night, similar to example 1, except that in step (2) the soap solution was heated to 55 ℃, and the pH of the soap solution was adjusted to 3 with acid.
Example 11
A micro-surfacing compound suitable for low temperature construction at night, similar to example 1, except that in step (2) the soap solution was heated to 70 ℃, and the pH of the soap solution was adjusted to 5.5 with acid.
Example 12
A micro-surfacing compound suitable for low-temperature construction at night is similar to that of example 1, except that in the step (4), basalt is used as aggregate with the particle size of 5mm, and limestone is used as aggregate with the particle sizes of 1mm and 3 mm.
Example 13
A micro-surfacing compound suitable for low temperature construction at night, similar to example 1, except that in step (4) the inorganic filler is fly ash.
Example 14
A micro-surfacing compound suitable for low temperature construction at night, similar to example 1, except that in step (4) the inorganic filler is lime.
Example 15
A micro-surfacing compound suitable for nighttime low temperature construction, similar to example 1, except that in step (4) the inorganic filler is 1: 1: 1.
Example 16
A micro-surfacing mixture suitable for low-temperature construction at night, similar to example 1, except that the micro-surfacing mixture is prepared from the following raw materials in parts by weight: 6 parts of emulsified asphalt, 2 parts of inorganic filler and 90 parts of aggregate.
Example 17
A micro-surfacing mixture suitable for low-temperature construction at night, similar to example 1, except that the micro-surfacing mixture is prepared from the following raw materials in parts by weight: 8 parts of emulsified asphalt, 4 parts of inorganic filler and 95 parts of aggregate.
Example 18
A micro-surfacing mixture suitable for low-temperature construction at night, similar to example 1, except that the micro-surfacing mixture is prepared from the following raw materials in parts by weight: 9 parts of emulsified asphalt, 9 parts of inorganic filler and 98 parts of aggregate.
Example 19
A micro-surfacing compound suitable for nighttime low-temperature construction, similar to example 1, except that 10 parts of emulsified asphalt, 10 parts of inorganic filler, and 100 parts of aggregate.
The micro-surfacing emulsified asphalt suitable for low-temperature construction at night and the mixture thereof prepared in the examples 4 to 19 have good molding speed, anti-slip property, anti-permeability property, structural depth and flatness after detection, and all meet the standard requirements.
According to the micro-surfacing emulsified asphalt, the slow-breaking quick-setting cationic emulsifier is adopted during preparation, the additive and the warm mixing agent are added into the matrix asphalt in advance, under the comprehensive action, the emulsion breaking speed of the emulsion material is high, the early strength of the formed mixture is high, construction can be carried out at the temperature of more than 5 ℃, and the adhesion between the micro-surfacing material and the original pavement stone can be enhanced by the emulsion material, so that the effect of enhancing the adhesion with the stone is achieved. The warm-mixing agent contains special hydrophilic groups, so that the asphalt can well wrap the aggregate at low temperature. In addition, the modified latex and the additive enable the emulsion part in the micro-surfacing material to better permeate into the gaps of the pavement, so that the micro-surfacing emulsified asphalt has good water sealing and adhering effects in the gaps, and the anti-sliding and anti-seepage performance of the surface layer is improved.
The coal ash, lime or cement are added into the micro-surfacing mixture instead of mineral powder, so that the micro-surfacing mixture is fully fused and has high stability. Therefore, the material can effectively shorten the construction period, improve the early strength of the mixture and open traffic earlier, thereby meeting the construction conditions of urban roads at night and having good economic and social benefits.
It should be noted that the above embodiments are only for understanding the present invention, the present invention is not limited to the embodiments, and any addition, equivalent replacement or modification of technical features based on the technical solution of the present invention should be regarded as the protection scope of the present invention.
Claims (10)
1. The micro-surfacing emulsified asphalt suitable for low-temperature construction at night is characterized by comprising the following components in parts by weight: the health-care food is prepared from the following raw materials in parts by weight: 50-65 parts of petroleum asphalt, 0.5-10 parts of emulsifier, 2-6 parts of warm mixing agent, 35-50 parts of water, 2-10 parts of modified latex and 2-10 parts of additive.
2. The micro-surfacing emulsified asphalt suitable for low-temperature construction at night according to claim 1, wherein: the health-care food is prepared from the following raw materials in parts by weight: 55-60 parts of petroleum asphalt, 2-8 parts of emulsifier, 3-5 parts of warm mixing agent, 40-45 parts of water, 4-8 parts of modified latex and 4-8 parts of additive.
3. The micro-surfacing emulsified asphalt suitable for low-temperature construction at night according to claim 1, wherein: the emulsifier is a cationic emulsifier.
4. The micro-surfacing emulsified asphalt suitable for low-temperature construction at night according to claim 1, wherein: the warm mixing agent is a Cecabase RT surface active agent type warm mixing agent.
5. The micro-surfacing emulsified asphalt suitable for low-temperature construction at night according to claim 1, wherein: the modified latex is SBR latex.
6. The micro-surfacing emulsified asphalt suitable for low-temperature construction at night according to claim 1, wherein: the additive is at least one of lake asphalt or rock asphalt.
7. A method for preparing micro-surfacing emulsified asphalt suitable for low-temperature construction at night according to any one of claims 1 to 6, wherein the method comprises the following steps: the method comprises the following steps:
step (1), heating common petroleum asphalt, adding a warm mixing agent, and mixing and stirring;
preparing an emulsifier into an aqueous solution, adding modified latex, heating the prepared soap liquid, and adjusting the pH value;
and (3) shearing the soap liquid obtained in the step (2), then pouring the hot-melt asphalt and the additives stirred in the step (1) into the soap liquid in the shearing in sequence, and obtaining the emulsified asphalt after shearing.
8. The method for preparing micro-surfacing emulsified asphalt suitable for low-temperature construction at night according to claim 7, wherein the method comprises the following steps: heating the common asphalt in the step (1) to 140-160 ℃, adding a warm-mixing agent, and mixing and stirring for 3 minutes.
9. The method for preparing micro-surfacing emulsified asphalt suitable for low-temperature construction at night according to claim 7, wherein the method comprises the following steps: and (3) heating the soap liquid in the step (2) to 45-70 ℃, and adjusting the pH of the soap liquid to 1.5-5.5 by using acid.
10. Use of the emulsified asphalt of any one of claims 1 to 6 for preparing a micro-surfacing mix, the micro-surfacing mix being prepared from the following raw materials in parts by weight: 6-10 parts of emulsified asphalt, 2-10 parts of inorganic filler and 90-100 parts of aggregate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020102875535 | 2020-04-13 | ||
| CN202010287553 | 2020-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111849179A true CN111849179A (en) | 2020-10-30 |
Family
ID=72986552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010528503.1A Pending CN111849179A (en) | 2020-04-13 | 2020-06-11 | Micro-surfacing emulsified asphalt suitable for low-temperature construction at night and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111849179A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113956844A (en) * | 2021-12-01 | 2022-01-21 | 淄博恒信路面材料有限公司 | Normal-temperature tortoise net crack repairing material, preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073232A (en) * | 2013-01-06 | 2013-05-01 | 重庆市智翔铺道技术工程有限公司 | Micro-surfacing mixture |
| EP2985309A2 (en) * | 2014-08-11 | 2016-02-17 | Research Institute of Highway Ministry of Transport | Waterborn polymer-modified emulsified asphalt mixture and process for producing the same |
| CN109880383A (en) * | 2019-01-21 | 2019-06-14 | 重庆工商职业学院 | A kind of micro-surface area modified hard emulsified asphalt and preparation method thereof |
| CN110272228A (en) * | 2019-06-18 | 2019-09-24 | 河南省交通规划设计研究院股份有限公司 | The low peculiar smell rubber-asphalt mixture of road engineering |
-
2020
- 2020-06-11 CN CN202010528503.1A patent/CN111849179A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073232A (en) * | 2013-01-06 | 2013-05-01 | 重庆市智翔铺道技术工程有限公司 | Micro-surfacing mixture |
| EP2985309A2 (en) * | 2014-08-11 | 2016-02-17 | Research Institute of Highway Ministry of Transport | Waterborn polymer-modified emulsified asphalt mixture and process for producing the same |
| CN109880383A (en) * | 2019-01-21 | 2019-06-14 | 重庆工商职业学院 | A kind of micro-surface area modified hard emulsified asphalt and preparation method thereof |
| CN110272228A (en) * | 2019-06-18 | 2019-09-24 | 河南省交通规划设计研究院股份有限公司 | The low peculiar smell rubber-asphalt mixture of road engineering |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113956844A (en) * | 2021-12-01 | 2022-01-21 | 淄博恒信路面材料有限公司 | Normal-temperature tortoise net crack repairing material, preparation method and application thereof |
| CN113956844B (en) * | 2021-12-01 | 2022-08-26 | 淄博恒信路面材料有限公司 | Normal-temperature tortoise net crack repairing material, preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1208393C (en) | Polymer emulsified and re-cross-linked asphalt colloid mixture and its preparing process | |
| CN108070269A (en) | A kind of epoxy-modified emulsified asphalt mist containing sand sealing material and its preparation method and application | |
| EP0866837B1 (en) | Rubber base asphalt emulsion additive and method | |
| CN104556906A (en) | Worn ultrathin road surface material and preparation method thereof | |
| CN104277462A (en) | Emulsified asphalt for ballastless track cement emulsified asphalt mortar and preparation method of emulsified asphalt | |
| CN104151844B (en) | A kind of cationic emulsified modified asphalt and the application in plate-type ballastless track | |
| CN102153874A (en) | Composite modified asphalt and preparation method thereof | |
| CN108129073A (en) | A kind of cold mixing cold laid asphaltic mixture and cold mixing cold laid asphaltic mixture wearing course | |
| CN108727842A (en) | A kind of emulsified asphalt and preparation method, stability and durability type cement pavement slurry seal Sub-sealing Course and preparation method thereof | |
| CN101323516B (en) | Rubber modified solidified soil, and preparing and construction method | |
| CN114644493B (en) | High-performance water-based epoxy modified emulsified asphalt micro-surfacing material and preparation method thereof | |
| CN101784612A (en) | Asphalt emulsion priming compositions and methods of use | |
| CN105801010A (en) | Cold patch asphalt mixture prepared from clay minerals and preparation method of cold patch asphalt mixture | |
| CN103204654B (en) | Micro-surfacing mixing material doped with rock asphalt and preparation method thereof | |
| CN109161164A (en) | Ultra-thin wearing layer room temperature asphalt modifier and preparation method thereof | |
| CN111849179A (en) | Micro-surfacing emulsified asphalt suitable for low-temperature construction at night and preparation method and application thereof | |
| CN112252108B (en) | Road construction method for in-situ cold recycling of asphalt pavement | |
| CN114075053A (en) | Ultrathin overlay mixture for preventive maintenance of asphalt pavement, preparation method and additive | |
| CN103755225A (en) | Modified bituminous mixture and preparation method thereof | |
| CN104087003B (en) | A kind of SBR modified emulsifying asphalt | |
| CN101735625B (en) | Special modified cold-mixing asphalt for cold-region normal-temperature mixing-type asphalt concrete | |
| CN111807764B (en) | Full basalt micro-surfacing material and preparation method thereof | |
| CN113622247B (en) | Low-carbon rapid maintenance paving method for asphalt pavement track | |
| CN109437676A (en) | SBR high-modulus composite modified asphalt mixture and preparation method thereof and pavement structure | |
| CN108558274A (en) | The preparation method of road surface aqueous epoxy resins emulsified bitulith |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |
|
| RJ01 | Rejection of invention patent application after publication |