CN111253111A - Preparation method and use method of normal-temperature rapid repair material for asphalt pavement - Google Patents
Preparation method and use method of normal-temperature rapid repair material for asphalt pavement Download PDFInfo
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- CN111253111A CN111253111A CN202010057049.6A CN202010057049A CN111253111A CN 111253111 A CN111253111 A CN 111253111A CN 202010057049 A CN202010057049 A CN 202010057049A CN 111253111 A CN111253111 A CN 111253111A
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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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/187—Repairing bituminous covers, e.g. regeneration of the covering material in situ, application of a new bituminous topping
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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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Road Repair (AREA)
- Road Paving Structures (AREA)
Abstract
The invention belongs to the technical field of asphalt road repair, and particularly relates to a preparation method and a use method of a normal-temperature rapid repair material for an asphalt pavement. The preparation method of the patching material comprises the following steps: s1: preparing asphalt; conveying the matrix asphalt into an asphalt tank, cooling, starting a stirring motor, pumping a normal-temperature modifier into the asphalt tank, stirring, placing, and mixing the asphalt pavement normal-temperature quick repair material after detecting that the uniformity of the asphalt is qualified; s2: mixing the aggregates of different grades and the mineral powder, dry-mixing the aggregates of different grades and the mineral powder, adding asphalt, mixing, and uniformly mixing to control no white material and no segregation to obtain the finished product. The normal-temperature quick asphalt pavement repairing material prepared by the method is suitable for repairing various pavement repairing pits, and has the advantages of good repairing effect, strong bearing capacity and low probability of secondary cracking of asphalt pavements.
Description
Technical Field
The invention belongs to the technical field of asphalt road repair, and particularly relates to a preparation method of a normal-temperature rapid repair material for an asphalt pavement, and a use method of the repair material.
Background
Along with the increase of road traffic volume, the increase of car axle load and the improvement of high-grade highway up run speed, the road of building according to traditional pitch standard has appeared serious initial stage and has damaged the phenomenon, and the common phenomenon of bituminous paving early destruction has: flooding, waves, bumps, cracks, pits, loose, etc. Early road surface diseases are one of the road diseases which are emphasized by a highway management and maintenance department, a plurality of early road surface pit slots are important, particularly, the phenomena of front repair and rear damage of a heavy-duty traffic highway occur, the highway maintenance needs to gradually realize real-time management, standardization, mechanization and information automation, and the timeliness and durability of daily maintenance needs to be reflected, so that the maintenance technology and maintenance materials are required to be continuously updated, and the road surface diseases can not occur again in a short time after being repaired.
At present, materials for pavement repair are mainly hot-mix asphalt mixture, penetrating asphalt macadam and cold patching material, which are traditional materials of highway maintenance departments, wherein the hot-mix asphalt mixture can only be used in seasons with higher temperature, most asphalt mixing plants which do not meet the environmental protection requirements cannot normally produce, the repair task of the pavement is severely restricted, and although the quality of the hot-mix asphalt mixture is ensured, the timeliness of the daily maintenance of the highway cannot be reflected.
The penetration type asphalt macadam and the cold patch are unstable in mixture gradation and long in cold patch liquid volatilization time, so that the strength of the mixture is slow to form, and new diseases such as loosening and crowding can occur in 3-6 months basically.
CN109401519A discloses an asphalt pavement repair material, which is characterized by comprising a component A and a component B, wherein the component A comprises the following components in parts by mass:
1-80 parts of a monomer of a thermosetting polymer and/or a prepolymer of the thermosetting polymer;
5-40 parts of admixture;
the B-type component comprises the following components in parts by mass:
1-80 parts of thermoplastic polymer;
polymerizing the monomer of the thermosetting polymer and/or the prepolymer of the thermosetting polymer to obtain the thermosetting polymer; the prepolymer of the thermosetting polymer comprises one or more of a thermosetting polyurethane prepolymer, a thermosetting phenolic resin prepolymer, an unsaturated polyester prepolymer, a furan resin prepolymer, a liquid polysulfide rubber prepolymer, an epoxy resin prepolymer, a polyurea prepolymer, a thermosetting melamine formaldehyde resin and a thermosetting acrylic resin;
the monomer of the thermosetting polymer is one or more of a monofunctional monomer, a difunctional monomer, a trifunctional monomer and a multifunctional monomer having reactivity;
the thermoplastic polymer comprises one or more of natural rubber, styrene-butadiene rubber, nitrile rubber, butadiene rubber, ethylene-propylene rubber, neoprene rubber, styrene-butadiene thermoplastic elastomers, thermoplastic polyurethane elastomers, polypropylene glycol, and road asphalt.
The above-mentioned patent application documents have the following disadvantages: 1. when the storage time exceeds 3 months, the repairing material becomes hard under the normal temperature condition, and the repairing material can be used after being heated by a heating device, so that the timeliness of repairing is influenced; 2. the storage requirement requires that the bagged patching material is placed in a room with the room temperature of more than 10 ℃, the temperature of the patching material is kept, and the storage requirement cannot be met in some places in northern areas or in humid and rainy areas.
Therefore, the invention of a new material which can realize the timeliness of daily maintenance and increase the durability of a road surface is a problem to be solved urgently in the field of highway maintenance.
Disclosure of Invention
In order to solve the technical problems, the invention provides a preparation method of a normal-temperature rapid repair material for an asphalt pavement; the method solves the problem that the repair material is hardened due to storage to influence the timeliness of repair in the existing method;
the invention also provides a use method of the normal-temperature rapid asphalt pavement patching material;
in view of the problems mentioned in the background technology, the inventor carries out different mixing amount tests on the normal temperature modifier in the normal temperature modified asphalt mixture on the basis of analyzing and summarizing the conventional daily maintenance materials, and finally determines the optimal mixing amount of the modifier of the normal temperature rapid repair material for the asphalt pavement, so that the mixture can be stored at normal temperature for more than 3 months and still has good workability, and no new diseases appear in repaired pavement pits for 2-3 years, so that the pavement durability is increased, and the highway maintenance fund can be saved by about 15%.
The preparation method of the normal-temperature rapid repair material for the asphalt pavement, provided by the invention, comprises the following steps of:
s1: preparation of bitumen
Conveying the matrix asphalt into an asphalt tank, cooling, starting a stirring motor, pumping a normal-temperature modifier into the asphalt tank, stirring, placing, and mixing the asphalt pavement normal-temperature quick repair material after detecting that the uniformity of the asphalt is qualified;
s2: mixing of
Mixing the aggregates of different grades and the mineral powder, dry-mixing the aggregates of different grades and the mineral powder, adding asphalt, mixing, and uniformly mixing to control no white material and no segregation to obtain the finished product.
Preferably, in S1, conveying the matrix asphalt into an asphalt tank, reducing the temperature to 100-120 ℃, starting a stirring motor, pumping a normal-temperature modifier into the asphalt tank, stirring for 60-120 min, keeping the temperature of the asphalt at 110-120 ℃, standing for 40-60 min, and mixing the asphalt pavement normal-temperature rapid repair material after detecting that the uniformity is qualified;
packaging the finished product into a packaging bag for storage;
preferably, the packaging bags for containing the finished products are an inner plastic cloth bag, a layer of woven bag and a layer of kraft paper outer bag, each bag is filled with 24-26 kg of materials, and the bags are tightly sealed to isolate air; the stacking is controlled within two layers, and the surface of the packaging bag is tightly covered by waterproof heat-insulating cotton cloth.
In S1, the temperature of the base asphalt is less than or equal to 120 ℃ when the normal temperature modifier is added.
The asphalt tank stores less than or equal to 2/3 of its volume.
The asphalt tank is located at a location remote from the fire source or the location where the smoke is drawn.
And S2, mixing the normal-temperature quick repair material with asphalt mixture plant or cement mixer.
The method comprises the steps of mixing the aggregates at a normal temperature to 50 ℃ in advance, heating the aggregates at all grades to 50 ℃ in advance, not heating mineral powder, mixing the aggregates at the temperature of 50 ℃ and the mineral powder for 10 seconds in a dry mode, adding asphalt, mixing, wherein the total mixing time is not less than 120 seconds, mixing by using an asphalt mixing plant, the total mixing time is not less than 60 seconds, uniformly mixing, controlling no white material and no segregation, and obtaining a finished product, wherein the temperature of the finished product mixed repairing material is 30-50 ℃.
Preferably, in S1, when the modifier is added, open fire or smoke around the modifier is avoided, and a fireproof facility is prepared;
preferably, the stone temperature is greater than or equal to 80 ℃, the asphalt temperature is greater than or equal to 100 ℃, the finished material is greater than or equal to 50 ℃ and no white material exists;
preferably, the finished mixed repairing material is bagged immediately after being stirred, the bag is formed by a layer of inner film and two layers of woven bags, and the inner film and the woven bags are respectively tied;
preferably, the finished mixed repairing material is stored indoors at the temperature of more than or equal to 20 ℃ when being stored;
preferably, the finished product mixed repairing material is heated for 15-25 min to be eliminated when in use;
preferably, the mixing amount of the modifier is 13% of the mass of the asphalt, and the mixing amount of the modifier is 25% of the mass of the asphalt during long-term storage.
The use method of the normal-temperature quick repair material for the asphalt pavement is characterized by comprising the following steps of:
the loose coefficient of the mixed repairing material is 1.3-1.4, and when the mixed repairing material is used, the mixed material is taken out from a storage chamber in advance and aired for 1-2 hours;
cutting pavement pits into squares or rectangles, thoroughly cleaning up sundries in the pits, blowing the pit area to a dry state by using a blower, spreading emulsified asphalt until the emulsified asphalt is demulsified and then filling the mixture, filling the mixture in layers when the depth of the pits is more than 4cm, and keeping the thickness of each layer to be not more than 4 cm;
after filling, immediately leveling and tamping, wherein the height of the tamped;
and after forming, cleaning gaps on four sides of the pit groove, pouring emulsified asphalt, reserving 1-2 cm of gaps on the top surface of the gaps, filling machine-made sand or stone chips, and opening traffic.
The invention has the advantages that the normal-temperature quick asphalt pavement repairing material prepared by the method is suitable for repairing various pavement repairing pits, and has good repairing effect, strong bearing capacity and low probability of re-cracking of asphalt pavements.
Detailed Description
For further explanation of the present invention, the present inventors will explain the present invention in detail by the following specific examples, but do not limit the present invention thereto.
Example 1
The preparation method of the normal-temperature rapid repair material for the asphalt pavement comprises the following steps:
s1, conveying the matrix asphalt into an asphalt tank, reducing the temperature to about 110 ℃, starting a stirring motor, pumping a normal-temperature modifier into the asphalt tank (when the normal-temperature modifier is added, the temperature of the asphalt cannot exceed 120 ℃), stirring for 90min, keeping the temperature of the asphalt at 115 ℃, standing for 50min, and mixing the asphalt with the normal-temperature rapid repair material for the asphalt pavement after the uniformity is detected to be qualified; keeping the volume of the asphalt stored in the asphalt tank not to exceed 2/3, and keeping the operator away from the opening of the asphalt tank to prevent the operator from being scalded by the asphalt sprayed out of the tank; the operation strictly prohibits the setting of a fire source near the asphalt tank and the smoking.
S2: mixing of
The normal temperature quick patching material for asphalt pavement is mixed, each grade of aggregate is heated to more than 50 ℃ in advance, mineral powder is not heated, each grade of aggregate and mineral powder with the temperature of more than or equal to 50 ℃ are firstly mixed for 10s in a dry mode during mixing, then asphalt is added and mixed, the total mixing time is not less than 120s, when an asphalt mixing plant is used for mixing, the total mixing time is not less than 60s, the materials are uniformly mixed, no material is whitened, no segregation is generated, finished products are obtained, and the temperature of the finished product mixed patching material is about 40 ℃.
And (3) storage:
after the normal-temperature quick repairing material for the asphalt pavement is mixed, the asphalt pavement is bagged and stored in time and cannot be placed in the air for a long time so as to prevent chemical substances in the modifier and CO in the air2The contact reaction occurs, and the workability of the mixture is influenced. When the asphalt pavement repair material is stored indoors, the indoor temperature is not lower than 20 ℃, the packaging bag for packaging the asphalt pavement normal-temperature rapid repair material must adopt 1 plastic cloth inner bag, 1 layer of woven bag and 1 layer of kraft paper outer bag, each bag is filled with about 25kg of materials, the sealing is tight, and the air is isolated as much as possible. The packed asphalt pavement normal temperature quick repairing material needs to be stored in a roomIn a room, the number of stacked packaging bags is not more than 2, so that the packaging bags are prevented from being compacted and paved difficultly, and the surfaces of the packaging bags are tightly covered by waterproof heat-insulating cotton cloth.
The use method of the normal-temperature rapid repair material for the asphalt pavement comprises the following steps:
the normal-temperature quick repairing material for the asphalt pavement is suitable for repairing various pavement repairing pits, the construction process is basically the same as that of the traditional hot-mix asphalt mixture, the difference is that the loose paving coefficient is different, the loose paving coefficient of the mixture is 1.3-1.4, the mixture is taken out from a storage chamber in advance when in use, the mixture is aired for 1-2 hours, the pavement pits are cut into squares or rectangles, sundries in the pits are thoroughly cleaned, a blower is used for blowing the pit area to a dry state, emulsified asphalt is sprayed until the emulsified asphalt is demulsified, the mixture can be filled, when the depth of the pits is more than 4cm, the mixture is filled in layers, the thickness of each layer is not more than 4cm, after filling, leveling and tamping are carried out, the gaps on the four sides of the pits are slightly larger than 2-3 mm of the original pavement after tamping, after forming, the gaps on the four sides of the pits are cleaned, the emulsified asphalt is poured, and the top surfaces of the, when filling machine-made sand or stone chips, the traffic can be opened.
In the preparation and use process of the repairing material, the repairing material of the invention is prepared according to the requirements of how:
aggregate strength, soft emulsion particle content, single-grade gradation, conversion flake content and passing rate smaller than 0.075mm, which are used by the asphalt pavement normal-temperature quick repairing material, are sources of quality control, and the monitoring of the technical indexes is enhanced when aggregate is selected, so that the technical indexes are guaranteed to be qualified and then used.
(1) Adding a normal-temperature modifier according to a set blending proportion strictly, and checking whether the blending proportion of the mixture is correct or not during blending, wherein if the aggregate changes, the blending proportion should be adjusted newly;
(2) during mixing, various temperatures and material weighing need to be accurately controlled, and deviation is controlled within a minimum range, so that the workability of a mixture is ensured;
(3) when in mixing, the uniformity of the mixture is observed at any time, and the mixture can not generate white materials and is immediately bagged and stored under the condition of proper temperature of the mixture;
(4) when repairing the pit slot, the method is strictly carried out according to the requirements of the asphalt pavement construction technical specification, and the surface gap is manually finished in a matching manner during tamping, so that the compactness is ensured.
A long-term monitoring system is established for road sections and pits repaired by the normal-temperature quick repairing material for the asphalt pavement, the repairing positions are observed irregularly, and the change condition of the mixture at the repairing positions is recorded in detail.
During the preparation and the use, the following should be ensured:
(1) heating common asphalt at a temperature not higher than 120 ℃, adding a modifier, and uniformly stirring;
(2) when the modifier is added, open fire and smoke cannot be exhausted around the fire-resistant material, and fire-resistant facilities (fire-resistant sand, fire extinguisher, cotton quilt and the like) are prepared;
(3) heating various stones to about 100 ℃ in advance for later use;
(4) when in mixing, the temperature of stone materials is not lower than 80 ℃, the temperature of asphalt is not lower than 100 ℃, and finished product materials are not lower than 50 ℃ and no white material with flowers is obtained;
(5) and (4) immediately bagging after the finished product is stirred, wherein the bag is bound with a layer of inner film and two layers of woven bags, and the inner film and the woven bags are respectively bound.
(6) When in use, if agglomeration occurs, the mixture can be heated in a heater for 20min and then can be used; the modifier is mixed in 13 wt% of asphalt and is mixed in 25 wt% of asphalt for long term storage.
Example 2
S1, conveying the matrix asphalt into an asphalt tank, reducing the temperature to 100 ℃, starting a stirring motor, pumping a normal-temperature modifier into the asphalt tank, stirring for 60min, keeping the temperature of the asphalt at 110 ℃, standing for about 40min, and mixing the asphalt pavement normal-temperature quick repair material after detecting that the uniformity is qualified;
s2: the normal temperature quick patching material for asphalt pavement is mixed, each grade of aggregate is heated to more than 50 ℃ in advance, mineral powder is not heated, each grade of aggregate and mineral powder with the temperature of more than or equal to 50 ℃ are firstly mixed for 10s in a dry mode during mixing, then asphalt is added and mixed, the total mixing time is not less than 120s, when an asphalt mixing plant is used for mixing, the total mixing time is not less than 60s, the materials are uniformly mixed, no material is whitened, no segregation is generated, finished products are obtained, and the temperature of the finished product mixed patching material is about 40 ℃.
The packaging bags contained in the finished product are a plastic cloth inner bag, a layer of woven bag and a layer of kraft paper outer bag, each bag is filled with about 25kg of materials, and the bag is tightly sealed to isolate air; the stacking is controlled within two layers, and the surface of the packaging bag is tightly covered by waterproof heat-insulating cotton cloth.
The method of use in example 2 was the same as in example 1.
Example 3
S1, conveying the matrix asphalt into an asphalt tank, reducing the temperature to 120 ℃, starting a stirring motor, pumping a normal-temperature modifier into the asphalt tank, stirring for 60min, keeping the temperature of the asphalt at about 120 ℃, standing for about 40min, and mixing the asphalt pavement normal-temperature quick repair material after detecting that the uniformity is qualified;
s2: the normal temperature quick patching material for asphalt pavement is mixed, each grade of aggregate is heated to more than 50 ℃ in advance, mineral powder is not heated, each grade of aggregate and mineral powder with the temperature of more than or equal to 50 ℃ are firstly mixed for 10s in a dry mode during mixing, then asphalt is added and mixed, the total mixing time is not less than 120s, when an asphalt mixing plant is used for mixing, the total mixing time is not less than 60s, the materials are uniformly mixed, no material is whitened, no segregation is generated, finished products are obtained, and the temperature of the finished product mixed patching material is about 40 ℃.
When the finished product mixed repairing material is stored, the finished product mixed repairing material is stored indoors, and the temperature is more than or equal to 20 ℃; the packaging bags contained in the finished product are a plastic cloth inner bag, a layer of woven bag and a layer of kraft paper outer bag, each bag is filled with about 25kg of materials, and the bag is tightly sealed to isolate air; the stacking is controlled within two layers, and the surface of the packaging bag is tightly covered by waterproof heat-insulating cotton cloth.
The method of use in example 3 was the same as in example 1.
And (3) on-site repairing time, after the excavation of the disease pit is finished and the quantity is calculated, manually and directly putting the repairing material into the disease position, and immediately tamping and sealing the edge after the repairing material is simply leveled. The pit repairing work of about 5 square can be completed within 20 minutes generally.
TABLE 1 storable test results of room temperature modified asphalt mixture
As can be seen from the data in the above table, the repairing material of the present invention is ideal in terms of both compactness, water permeability coefficient, flatness and friction coefficient.
Claims (10)
1. The preparation method of the normal-temperature rapid repair material for the asphalt pavement comprises the following steps:
s1: preparation of bitumen
Conveying the matrix asphalt into an asphalt tank, cooling, starting a stirring motor, pumping a normal-temperature modifier into the asphalt tank, stirring, placing, and mixing the asphalt pavement normal-temperature quick repair material after detecting that the uniformity of the asphalt is qualified;
s2: mixing of
Mixing the aggregates of different grades and the mineral powder, dry-mixing the aggregates of different grades and the mineral powder, adding asphalt, mixing, and uniformly mixing to control no white material and no segregation to obtain the finished product.
2. The preparation method of the normal-temperature rapid asphalt pavement patching material as claimed in claim 1, which is characterized by comprising the following steps:
s1, conveying the matrix asphalt into an asphalt tank, reducing the temperature to 100-120 ℃, starting a stirring motor, pumping a normal-temperature modifier into the asphalt tank, stirring for 60-120 min, keeping the temperature of the asphalt at 110-120 ℃, standing for 40-60 min, detecting that the uniformity is qualified, and then mixing the normal-temperature rapid repair material for the asphalt pavement.
3. The preparation method of the normal-temperature rapid asphalt pavement patching material as claimed in claim 1, which is characterized by comprising the following steps:
packaging the finished product into a packaging bag for storage;
preferably, the packaging bags for containing the finished products are an inner plastic cloth bag, a layer of woven bag and a layer of kraft paper outer bag, each bag is filled with 24-26 kg of materials, and the bags are tightly sealed to isolate air; the stacking is controlled within two layers, and the surface of the packaging bag is tightly covered by waterproof heat-insulating cotton cloth.
4. The preparation method of the normal-temperature rapid asphalt pavement patching material as claimed in claim 1, which is characterized by comprising the following steps:
in S1, the temperature of the base asphalt is less than or equal to 120 ℃ when the normal temperature modifier is added.
5. The preparation method of the normal-temperature rapid asphalt pavement patching material as claimed in claim 1, which is characterized by comprising the following steps:
the asphalt tank stores less than or equal to 2/3 of its volume.
6. The preparation method of the normal-temperature rapid asphalt pavement patching material as claimed in claim 1, which is characterized by comprising the following steps:
the asphalt tank is located at a location remote from the fire source or the location where the smoke is drawn.
7. The preparation method of the normal-temperature rapid asphalt pavement patching material as claimed in claim 1, which is characterized by comprising the following steps:
and S2, mixing the normal-temperature quick repair material with asphalt mixture plant or cement mixer.
8. The preparation method of the normal-temperature rapid asphalt pavement patching material as claimed in claim 1, which is characterized by comprising the following steps:
s2: the method comprises the steps of mixing the aggregates at a normal temperature to 50 ℃ in advance, heating the aggregates at all grades to 50 ℃ in advance, not heating mineral powder, mixing the aggregates at the temperature of 50 ℃ and the mineral powder for 10 seconds in a dry mode, adding asphalt, mixing, wherein the total mixing time is not less than 120 seconds, mixing by using an asphalt mixing plant, the total mixing time is not less than 60 seconds, uniformly mixing, controlling no white material and no segregation, and obtaining a finished product, wherein the temperature of the finished product mixed repairing material is 30-50 ℃.
9. The preparation method of the normal-temperature rapid asphalt pavement patching material as claimed in claim 1, which is characterized by comprising the following steps:
in S1, when a modifier is added, open fire or smoke is avoided around, and fireproof facilities are prepared;
preferably, the stone temperature is greater than or equal to 80 ℃, the asphalt temperature is greater than or equal to 100 ℃, the finished material is greater than or equal to 50 ℃ and no white material exists;
preferably, the finished mixed repairing material is bagged immediately after being stirred, the bag is formed by a layer of inner film and two layers of woven bags, and the inner film and the woven bags are respectively tied;
preferably, the finished mixed repairing material is stored indoors at the temperature of more than or equal to 20 ℃ when being stored;
preferably, the finished product mixed repairing material is heated for 15-25 min to be eliminated when in use;
preferably, the mixing amount of the modifier is 13% of the mass of the asphalt, and the mixing amount of the modifier is 25% of the mass of the asphalt during long-term storage.
10. The use method of the normal-temperature rapid asphalt pavement patching material as claimed in claim 1, is characterized in that:
the loose coefficient of the mixed repairing material is 1.3-1.4, and when the mixed repairing material is used, the mixed material is taken out from a storage chamber in advance and aired for 1-2 hours;
cutting pavement pits into squares or rectangles, thoroughly cleaning up sundries in the pits, blowing the pit area to a dry state by using a blower, spreading emulsified asphalt until the emulsified asphalt is demulsified and then filling the mixture, filling the mixture in layers when the depth of the pits is more than 4cm, and keeping the thickness of each layer to be not more than 4 cm;
after filling, immediately leveling and tamping, wherein the height of the tamped;
and after forming, cleaning gaps on four sides of the pit groove, pouring emulsified asphalt, reserving 1-2 cm of gaps on the top surface of the gaps, filling machine-made sand or stone chips, and opening traffic.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112609554A (en) * | 2020-12-22 | 2021-04-06 | 朱鑫 | Road repairing device capable of increasing friction coefficient |
| CN116289384A (en) * | 2023-02-27 | 2023-06-23 | 广州大学 | Method for preventing and treating reflective recracking of pavement by cement-filled asphalt mixture |
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