CN111747713A - Early-strength self-leveling concrete pavement rapid repairing material and preparation method thereof - Google Patents
Early-strength self-leveling concrete pavement rapid repairing material and preparation method thereof Download PDFInfo
- Publication number
- CN111747713A CN111747713A CN202010750113.9A CN202010750113A CN111747713A CN 111747713 A CN111747713 A CN 111747713A CN 202010750113 A CN202010750113 A CN 202010750113A CN 111747713 A CN111747713 A CN 111747713A
- Authority
- CN
- China
- Prior art keywords
- parts
- cement
- water
- concrete pavement
- component
- 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
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/022—Carbon
- C04B14/024—Graphite
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2623—Polyvinylalcohols; Polyvinylacetates
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses an early-strength self-leveling concrete pavement rapid repairing material and a preparation method thereof, wherein the material comprises the following materials in parts by mass: 100 parts of composite cement-based reinforcing material, 5-15 parts of fly ash, 5-15 parts of mineral powder, 0.1-0.5 part of polypropylene fiber, 0.15-0.35 part of coagulation regulating component and 1-1.5 parts of water reducing component, and mixing with water. The self-leveling and self-permeability-improving rapid repairing material is obtained by mutually cooperating and optimizing inorganic and organic components, and the self-leveling property and the permeability of the rapid repairing material can be improved and the toughness of the rapid repairing material can be improved by adding the graphite and the organic water-soluble polyvinyl alcohol according to the mass ratio; the whole has the characteristics of high hardening speed, high early strength, small shrinkage deformation, self-leveling property, high permeability, adjustable setting time and the like. The invention can be applied to road surface repair of highways, airports and the like, and makes up for various defects of the prior similar products.
Description
Technical Field
The invention relates to an early-strength self-leveling concrete pavement rapid repairing material and a preparation method thereof, belonging to the technical field of road engineering materials.
Background
The highway is an important life line for national economy and national defense safety, and plays an irreplaceable role in other transportation modes due to the specific superiority and flexibility of the highway. With the rapid and continuous development of economy in China, the rapid increase of traffic volume and the rapid increase of vehicle-mounted weight in recent years, the damage of cement concrete pavements in China is increasingly serious, the cement concrete pavements built in early stages are close to the service life of the cement concrete pavements, and the newly built concrete pavements are damaged to different degrees when the newly built concrete pavements do not reach the design age, and in addition, the damage phenomenon inevitably occurs after the pavements are in service for a period of time due to the complex and severe use environment. The damage of the pavement caused by the above reasons not only affects the normal life of people but also causes huge economic loss. When roads with busy traffic are repaired, the long-time traffic closing is not allowed, particularly for expressways and urban roads, if ordinary cement concrete is adopted for repairing, the curing time is long, the early strength is low, and the traffic can be opened generally within 5-7 days. Its repair should be done as much as possible within a few hours of the operating gap.
At present, most of common cement-based rapid repair materials are in a dry-hard state and a semi-dry-hard state, and are molded by dry pressing or vibration. Therefore, the construction time is influenced, the rapid traffic opening is not facilitated, the labor intensity of workers is increased, and the material has low early strength, poor adhesion with old concrete, easy crack generation and influence on the repairing effect of the pavement.
Disclosure of Invention
The invention aims to provide a preparation method of an early-strength self-leveling concrete pavement rapid repairing material. The method solves the defects of troublesome construction, high labor intensity, low strength after construction, poor bonding property with old concrete, easy crack generation and influence on the repairing effect of the pavement in the prior art.
The technical scheme of the invention is as follows: the early-strength self-leveling concrete pavement rapid repairing material is characterized by comprising the following raw materials in parts by mass: 100 parts of composite cement-based reinforcing material, 5-15 parts of fly ash, 5-15 parts of mineral powder, 0.1-0.5 part of polypropylene fiber, 0.15-0.35 part of coagulation regulating component, 1-1.5 parts of water reducing component, 150-300 parts of fine aggregate, 0-400 parts of coarse aggregate and 28-35 parts of water.
The early-strength self-leveling concrete pavement rapid repairing material is prepared from the following raw materials in parts by mass: 100 parts of composite cement-based reinforcing material, 8 parts of fly ash, 6 parts of mineral powder, 0.3 part of polypropylene fiber, 0.25 part of coagulation regulating component, 1.2 parts of water reducing component, 150 parts of fine aggregate, 380 parts of coarse aggregate and 30 parts of water.
The early-strength self-leveling concrete pavement rapid repairing material is characterized in that the coagulation adjusting component comprises sodium gluconate and calcium chloride, and the mass ratio is 1: 4-2: 5.
The early-strength self-leveling concrete pavement rapid repair material is characterized in that the fly ash is I-grade ash, and the water demand ratio is not more than 95%; specific surface area of the mineral powder is not less than 650m2Per kg; the fine aggregate is 0-4.75 mm continuous grade river sand, and the coarse aggregate is 5-15 mm continuous grade limestone.
The early-strength self-leveling concrete pavement rapid repair material comprises water-reducing components of styrene-acrylic emulsion and polycarboxylic acid high-efficiency water reducing agent in a mass ratio of 1: 0.2 to 0.3.
The early-strength self-leveling concrete pavement rapid repair material is characterized in that the length of the polypropylene fiber is 1.5mm, and the density is 0.90-0.92g/cm3。
The preparation method of the early strength type self-leveling concrete pavement rapid repair material comprises the steps of mixing specified raw materials, wherein the mixing process comprises the steps of adding 2/3 of composite cement-based reinforcing material, fly ash, mineral powder, polypropylene fiber, coagulation regulating component, water reducing component and total water consumption, and carrying out low-speed mixing for 30 s; adding fine aggregate and stirring at high speed for 30 s; ③ adding the coarse aggregate and the rest water and stirring for 1 min.
In the preparation method of the early-strength self-leveling concrete pavement rapid repair material, the composite cement-based reinforcing material is obtained by doping inorganic components and organic components, wherein the inorganic components comprise: ordinary portland cement, quick-hardening cement, early strength cement, graphite; the organic component is polyvinyl alcohol. The mass ratio of the inorganic components is 1: 2: 1: 0.08-1: 2: 1: 0.1, the mass ratio of the inorganic components to the organic components is 1: 0.04 to 0.07;
in the preparation method of the early-strength self-leveling concrete pavement rapid repairing material, the particle size of the graphite is 50 meshes.
The water adding and mixing process is characterized in that firstly, a cement mixing pot is adopted, inorganic components in the composite cement-based reinforcing material, including Portland cement, rapid hardening cement, early strength cement and graphite, are mixed according to the mass ratio, and the mixing time is 30 s. And then adding the organic component polyvinyl alcohol according to the mass ratio, and stirring for 60s to form the composite cement-based reinforcing material. Secondly, adding the fly ash, the mineral powder, the polypropylene fiber, the coagulation regulating component and the fine aggregate into a cement stirring pot according to the mass ratio, stirring at a low speed for 60s, and forming a component A for later use after stirring. Thirdly, adding the cement-based reinforcing material into the component A, stirring at a low speed for 30s, adding the coarse aggregate, the water and the water-reducing component according to the mass ratio, and stirring at a high speed for 60 s.
Compared with the prior art, the repair material disclosed by the invention combines inorganic and organic components, forms an organic and inorganic compatible rapid repair material through material optimization selection, and can improve the self-leveling property and permeability of the rapid repair material by adding graphite and organic water-soluble polyvinyl alcohol. The cement components consisting of ordinary portland cement, quick-hardening cement and early strength cement are optimized and prepared according to the mass ratio, so that the cement components have the properties of high early strength and continuous increase and no shrinkage of later strength. The organic water-soluble polyvinyl alcohol and the styrene-acrylic emulsion in the water-reducing component can form a network structure with an inorganic cement material through hydration reaction, so that the toughness of the rapid repairing material is improved. The rapid repairing material is prepared by optimizing the components of cement, namely common Portland cement, rapid-hardening cement and early strength cement according to the mass ratio, and obtains the strength forming mechanism and the excellent macroscopic performance characteristics different from those of other rapid repairing materials by adding the cooperation mechanism of the optimally selected components such as water-soluble polyvinyl alcohol, styrene-acrylic emulsion, graphite and the like. The physical properties of the repairing material are equivalent to those of the original concrete, so that various elastic and plastic deformations of the repairing material under the action of external force and the change of temperature and humidity are consistent with those of the original pavement, and the conditions of transition region cracking, repairing material falling and the like caused by overlarge deformation difference of the repairing material and the original pavement can be reduced. Compared with the original pavement concrete, the patching material has better performances, such as high early strength, no later strength shrinkage, rapid strength increase, high toughness, good durability, high permeability, low shrinkage and the like, so that the concrete pavement can recover or have higher comprehensive performance after being patched. The repairing material has better fluidity, can achieve self-leveling without vibrating in a reinforcing steel bar dense area, greatly reduces the labor intensity of workers, and reduces the environmental load brought by construction. The repairing material can finish repairing and recover traffic in a short time, and the coagulation time of the mixture can be correspondingly adjusted according to the specific construction condition on site, so that the controllability is strong. The repairing material of the invention mainly comprises a composite cement-based reinforcing material, and the used raw materials have wide sources and low cost. When the invention is used, only water and aggregate are needed to be added according to the specified water-cement ratio and uniformly mixed, after mechanical pumping or manual construction, manual leveling is not needed, and a flat surface is formed by the flowing of slurry under the action of self weight. The repairing material can be widely applied to the rapid repairing of cement concrete structures of roads, airports, bridge floors, tunnels, parking lots, ports, wharfs and the like.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the present invention is not limited thereto.
Early-strength self-leveling concrete pavement rapid repairing materialThe preparation method of the material comprises the following steps of: 100 parts of composite cement-based reinforcing material, 5-15 parts of fly ash, 5-15 parts of mineral powder, 0.1-0.5 part of polypropylene fiber, 0.15-0.35 part of coagulation regulating component, 1-1.5 parts of water reducing component, 150-300 parts of fine aggregate, 0-400 parts of coarse aggregate and 28-35 parts of water. The best material in parts by mass is as follows: 100 parts of composite cement-based reinforcing material, 8 parts of fly ash, 6 parts of mineral powder, 0.3 part of polypropylene fiber, 0.25 part of coagulation regulating component, 1.2 parts of water reducing component, 150 parts of fine aggregate, 380 parts of coarse aggregate and 30 parts of water. The composite cement-based reinforcing material is obtained by doping inorganic components and organic components, wherein the inorganic components comprise: ordinary portland cement, quick-hardening cement, early strength cement, graphite; the organic component is polyvinyl alcohol. The mass ratio of the inorganic components is 1: 2: 1: 0.08-1: 2: 1: 0.1, the mass ratio of the inorganic components to the organic components is 1: 0.04 to 0.07. The water reducing component comprises styrene-acrylic emulsion and a polycarboxylic acid high-efficiency water reducing agent in a mass ratio of 1: 0.2 to 0.3. The polypropylene fiber has the length of 1.5mm and the density of 0.90-0.92g/cm3. The particle size of the graphite is 50 meshes.
The coagulation regulating component comprises sodium gluconate and calcium chloride in a mass ratio of 1: 4-2: 5; the fly ash is I-grade ash, and the water demand ratio is not more than 95 percent; the specific surface area of the ore powder is not less than 650m 2/kg; the fine aggregate is 0-4.75 mm continuous grade river sand, and the coarse aggregate is 5-15 mm continuous grade limestone. The process of adding water and mixing the inorganic components in the composite cement-based reinforcing material comprises mixing the inorganic components including Portland cement, rapid hardening cement, early strength cement and graphite in a mass ratio for 30s by adopting a cement mixing pot. And then adding the organic component polyvinyl alcohol according to the mass ratio, and stirring for 60s to form the composite cement-based reinforcing material. Secondly, adding the fly ash, the mineral powder, the polypropylene fiber, the coagulation regulating component and the fine aggregate into a cement stirring pot according to the mass ratio, stirring at a low speed for 60s, and forming a component A for later use after stirring. Thirdly, adding the cement-based reinforcing material into the component A, stirring at a low speed for 30s, adding the coarse aggregate, the water and the water-reducing component according to the mass ratio, and stirring at a high speed for 60 s.
Example one
The construction site of the embodiment is as follows: a road tunnel pavement of a certain highway in the western region; repairing the part: a thin overlay of pavement; disease types are as follows: peeling and cracking of the road surface.
The construction steps are as follows:
firstly, removing concrete fragments on the damaged surface by using sand paper and a steel brush;
wetting the surface of the disease with clear water to reach saturation surface dryness;
step three, manual mixing, namely preparing the repairing material on site, wherein the mixing process comprises the following steps: adding 100 parts of composite cement-based reinforcing material, 9 parts of fly ash, 6 parts of mineral powder, 0.03 part of polypropylene fiber, 0.15 part of coagulation regulating component, 1.23 parts of water reducing component and 22 parts of water, and stirring at a low speed for 30 s; ② adding 300 parts of fine aggregate and 11 parts of water, and stirring at high speed for 1.5 min. Placing the repairing material on the damaged part to enable the repairing material to be automatically leveled, and finishing repairing construction in 30min by means of manual plastering;
and step five, natural maintenance.
The construction effect is that the initial setting time is 45 minutes, the final setting time is 50 minutes, the compressive strength after construction is completed for 2 hours is 25.6MPa, the compressive strength after construction is completed for 24 hours is 47.9MPa, the compressive strength after construction is completed for 3 days is 51.8MPa, the flexural strength after construction is completed for 2 hours is 3.8MPa, the flexural strength after construction is completed for 24 hours is 4.5MPa, the flexural strength after construction is completed for 3 days is 4.8MPa, and the expansion rate after construction is completed for 28 days is 7 × 10-4% of the total weight of the composition. After the construction of the embodiment is used for more than three years, the repairing area has better cohesiveness with the original concrete, and the phenomena of peeling, stripping, cracking and the like do not occur.
Because the common cement is adopted, the hourly strength within 1 day cannot be tested, the compressive strength of 3 days after construction is 18.8MPa, the flexural strength is 1.5MPa, and the expansion rate of 28 days after construction is-16 × 10-4％。
Example two
The construction site of the embodiment is as follows: a road surface of an airport in the western region; repairing the part: airport tarmac; disease types are as follows: concrete road surface broken plate and corner drop.
The construction steps are as follows:
firstly, removing concrete fragments on the damaged surface by using sand paper and a steel brush;
wetting the surface of the disease with clear water to reach saturation surface dryness;
step three, manual mixing, namely preparing the repairing material on site, wherein the mixing process comprises the following steps: adding 100 parts of composite cement-based reinforcing material, 8 parts of fly ash, 8 parts of mineral powder, 0.06 part of polypropylene fiber, 0.15 part of coagulation regulating component, 1.20 parts of water reducing component and 20 parts of water, and stirring at a ground speed for 30 s; adding 150 parts of fine aggregate, and stirring at high speed for 30 s; thirdly, adding coarse aggregate and 10 parts of water and stirring for 1 min;
placing the repairing material on the damaged part to enable the repairing material to be automatically leveled, and finishing repairing construction in 30min by means of manual plastering;
and step five, natural maintenance.
The construction effect is that the initial setting time is 40 minutes, the final setting time is 50 minutes, the compressive strength after construction is finished for 2 hours is 32.5MPa, the compressive strength after construction is finished for 24 hours is 54MPa, the compressive strength after construction is finished for 3 days is 58.8MPa, the flexural strength after construction is finished for 2 hours is 4.2MPa, the flexural strength after construction is finished for 24 hours is 5.3MPa, the flexural strength after construction is finished for 3 days is 5.8MPa, and the expansion rate after construction is finished for 28 days is 25 × 10-4% of the total weight of the composition. The method can be used for construction at the take-off interval of the airplane, does not need to stop the airplane, can meet the take-off and landing requirements of the airplane within 2 hours, and ensures quick navigation.
Because the ordinary cement is adopted, the hourly strength within 1 day cannot be tested, the compressive strength within 3 days after construction is 21.3MPa, the flexural strength is 1.8MPa, and the expansion rate after 28 days after construction is-8 × 10-4％。
EXAMPLE III
Construction site: a concrete pavement layer of a highway bridge in the western region; repairing the part: a highway trunk; disease types are as follows: the concrete pavement layer is broken.
The construction process comprises the following steps:
step one, removing damaged surface concrete;
wetting the surface of the disease with clear water to reach saturation surface dryness;
step three, manual mixing, namely preparing the repairing material on site, wherein the mixing process comprises the following steps: adding 100 parts of composite cement-based reinforcing material, 7.5 parts of fly ash, 7 parts of mineral powder, 0.05 part of polypropylene fiber, 0.2 part of coagulation adjusting component, 1.20 parts of water reducing component and 22 parts of water, and stirring at low speed for 30 s; adding fine aggregate and stirring at high speed for 30 s; thirdly, adding the coarse aggregate and the rest water and stirring for 1 min;
placing the repairing material on the damaged part to enable the repairing material to be leveled automatically, assisting manual leveling, and finishing repairing construction within 30 min;
and step five, natural maintenance.
The construction effect is that the initial setting time is 40 minutes, the final setting time is 50 minutes, the compressive strength after construction is finished for 2 hours is 28.6MPa, the compressive strength after construction is finished for 24 hours is 48.9MPa, the compressive strength after construction is finished for 3 days is 56.7MPa, the flexural strength after construction is finished for 2 hours is 4MPa, the flexural strength after construction is finished for 24 hours is 5MPa, the flexural strength after construction is finished for 3 days is 5.5MPa, and the expansion rate after construction is finished for 28 days is 29 × 10-4% of the total weight of the composition. The vehicle can be recovered within 2 hours after the repair, and in the using process of more than one year later, the appearance of the repaired part is good, the repaired part has better cohesiveness with the original concrete, the damage is not further developed, and the repairing material plays an expected role.
Because the common cement is adopted, the hourly strength within 1 day cannot be tested, the compressive strength of 3 days after construction is 19.7MPa, the flexural strength is 1.5MPa, and the expansion rate of 28 days after construction is-8 × 10-4％。
Because the working condition is three-purpose for the bridge structure, and the requirement is provided for the durability of the material, the durability of the two materials is compared by reserving the test piece on site.
The invention can replace cement in concrete, adopts a secondary mixing process in the using process, can be directly used for construction after being uniformly mixed, has the characteristics of high hardening speed, high early strength, small shrinkage deformation, adjustable setting time and the like, has simple process flow, can achieve self-leveling, effectively reduces the labor intensity of workers, reduces the environmental load caused by construction, has no pollution to the surrounding environment, and is a novel green material. The invention can be applied to road surface repair of highways, airports and the like, overcomes the defects of the prior similar products, can be determined according to the grade of the required concrete, needs to design the concrete before construction, tests according to the concrete design, and determines the doping amount of the repair material according to the test result.
Claims (10)
1. The early-strength self-leveling concrete pavement rapid repairing material is characterized by comprising the following raw materials in parts by mass: 100 parts of composite cement-based reinforcing material, 5-15 parts of fly ash, 5-15 parts of mineral powder, 0.1-0.5 part of polypropylene fiber, 0.15-0.35 part of coagulation regulating component, 1-1.5 parts of water reducing component, 150-300 parts of fine aggregate, 0-400 parts of coarse aggregate and 28-35 parts of water.
2. The early strength self-leveling concrete pavement rapid repair material according to claim 1, which is composed of the following raw materials in parts by mass: 100 parts of composite cement-based reinforcing material, 8 parts of fly ash, 6 parts of mineral powder, 0.3 part of polypropylene fiber, 0.25 part of coagulation regulating component, 1.2 parts of water reducing component, 150 parts of fine aggregate, 380 parts of coarse aggregate and 30 parts of water.
3. The early strength self-leveling concrete pavement rapid repair material according to claim 1 or 2, characterized in that: the coagulation regulating component comprises sodium gluconate and calcium chloride in a mass ratio of 1: 4-2: 5.
4. The early strength self-leveling concrete pavement rapid repair material according to claim 1 or 2, characterized in that: the fly ash is I-grade ash, and the water demand ratio is not more than 95 percent; specific surface area of the mineral powder is not less than 650m2Per kg; the fine aggregate is 0-4.75 mm continuous grade river sand, and the coarse aggregate is 5-15 mm continuous grade limestone.
5. The early strength self-leveling concrete pavement rapid repair material according to claim 1 or 2, characterized in that: the water reducing component comprises styrene-acrylic emulsion and a polycarboxylic acid high-efficiency water reducing agent in a mass ratio of 1: 0.2 to 0.3.
6. The early strength self-leveling concrete pavement rapid repair material according to claim 1 or 2, characterized in that: the polypropylene fiber has the length of 1.5mm and the density of 0.90-0.92g/cm3。
7. The method for preparing the early strength self-leveling concrete pavement rapid repair material according to any one of claims, wherein the method comprises the following steps: the method comprises the steps of mixing specified raw materials, wherein 2/3 of composite cement-based reinforcing material, fly ash, mineral powder, polypropylene fiber, coagulation regulating component, water reducing component and total water consumption is added in the mixing process, and the mixture is stirred at a low speed for 30 s; adding fine aggregate and stirring at high speed for 30 s; ③ adding the coarse aggregate and the rest water and stirring for 1 min.
8. The preparation method of the early strength self-leveling concrete pavement rapid repair material according to claim 7, characterized by comprising the following steps: the composite cement-based reinforcing material is obtained by doping inorganic components and organic components, wherein the inorganic components comprise: ordinary portland cement, quick-hardening cement, early strength cement, graphite; the organic component is polyvinyl alcohol. The mass ratio of the inorganic components is 1: 2: 1: 0.08-1: 2: 1: 0.1, the mass ratio of the inorganic components to the organic components is 1: 0.04 to 0.07.
9. The preparation method of the early strength self-leveling concrete pavement rapid repair material according to claim 8, characterized by comprising the following steps: the particle size of the graphite is 50 meshes.
10. The preparation method of the early strength self-leveling concrete pavement rapid repair material according to claim 8, characterized by comprising the following steps: the water adding and mixing process is characterized in that firstly, a cement mixing pot is adopted, inorganic components in the composite cement-based reinforcing material, including Portland cement, rapid hardening cement, early strength cement and graphite, are mixed according to the mass ratio, and the mixing time is 30 s. And then adding the organic component polyvinyl alcohol according to the mass ratio, and stirring for 60s to form the composite cement-based reinforcing material. Secondly, adding the fly ash, the mineral powder, the polypropylene fiber, the coagulation regulating component and the fine aggregate into a cement stirring pot according to the mass ratio, stirring at a low speed for 60s, and forming a component A for later use after stirring. Thirdly, adding the cement-based reinforcing material into the component A, stirring at a low speed for 30s, adding the coarse aggregate, the water and the water-reducing component according to the mass ratio, and stirring at a high speed for 60 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010750113.9A CN111747713A (en) | 2020-07-30 | 2020-07-30 | Early-strength self-leveling concrete pavement rapid repairing material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010750113.9A CN111747713A (en) | 2020-07-30 | 2020-07-30 | Early-strength self-leveling concrete pavement rapid repairing material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111747713A true CN111747713A (en) | 2020-10-09 |
Family
ID=72712629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010750113.9A Pending CN111747713A (en) | 2020-07-30 | 2020-07-30 | Early-strength self-leveling concrete pavement rapid repairing material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111747713A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112456938A (en) * | 2020-12-10 | 2021-03-09 | 上海阳森精细化工有限公司 | High-fluidity long-operation-period polyurethane urea cement concrete mortar terrace |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250043A (en) * | 2008-03-07 | 2008-08-27 | 南京航空航天大学 | Rapid mending agent for microscopic checks of airport pavement and preparation thereof |
| CN105294049A (en) * | 2015-10-12 | 2016-02-03 | 广西交通科学研究院 | Special cement-base patching material and cement concrete pavement quick repairing method |
| CN106186863A (en) * | 2016-07-10 | 2016-12-07 | 中国电建集团贵阳勘测设计研究院有限公司 | Preparation method of rapid repairing material for concrete pavement |
| KR20160147154A (en) * | 2015-06-12 | 2016-12-22 | (주)콘텍이엔지 | Mortar for repairing road, concrete for repairing road using the same and road repairing method using the same |
| CN107324738A (en) * | 2017-08-29 | 2017-11-07 | 李建州 | A kind of Cement Concrete Pavement Reconstruction material and Cement Concrete Pavement Reconstruction method |
| CN107721328A (en) * | 2017-09-15 | 2018-02-23 | 广西交通科学研究院有限公司 | Cement concrete pavement locally changes plate with quick be open to traffic patching material and construction method |
| CN109778655A (en) * | 2019-03-15 | 2019-05-21 | 四川轻化工大学 | Method for repairing damaged road surface |
| CN110627458A (en) * | 2019-09-03 | 2019-12-31 | 中国能源建设集团甘肃省电力设计院有限公司 | High-early-strength cement-based rapid repairing material and preparation method thereof |
| CN111153670A (en) * | 2020-01-16 | 2020-05-15 | 西安建筑科技大学 | Cement concrete pavement rapid repairing material, mortar and preparation method |
-
2020
- 2020-07-30 CN CN202010750113.9A patent/CN111747713A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250043A (en) * | 2008-03-07 | 2008-08-27 | 南京航空航天大学 | Rapid mending agent for microscopic checks of airport pavement and preparation thereof |
| KR20160147154A (en) * | 2015-06-12 | 2016-12-22 | (주)콘텍이엔지 | Mortar for repairing road, concrete for repairing road using the same and road repairing method using the same |
| CN105294049A (en) * | 2015-10-12 | 2016-02-03 | 广西交通科学研究院 | Special cement-base patching material and cement concrete pavement quick repairing method |
| CN106186863A (en) * | 2016-07-10 | 2016-12-07 | 中国电建集团贵阳勘测设计研究院有限公司 | Preparation method of rapid repairing material for concrete pavement |
| CN107324738A (en) * | 2017-08-29 | 2017-11-07 | 李建州 | A kind of Cement Concrete Pavement Reconstruction material and Cement Concrete Pavement Reconstruction method |
| CN107721328A (en) * | 2017-09-15 | 2018-02-23 | 广西交通科学研究院有限公司 | Cement concrete pavement locally changes plate with quick be open to traffic patching material and construction method |
| CN109778655A (en) * | 2019-03-15 | 2019-05-21 | 四川轻化工大学 | Method for repairing damaged road surface |
| CN110627458A (en) * | 2019-09-03 | 2019-12-31 | 中国能源建设集团甘肃省电力设计院有限公司 | High-early-strength cement-based rapid repairing material and preparation method thereof |
| CN111153670A (en) * | 2020-01-16 | 2020-05-15 | 西安建筑科技大学 | Cement concrete pavement rapid repairing material, mortar and preparation method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112456938A (en) * | 2020-12-10 | 2021-03-09 | 上海阳森精细化工有限公司 | High-fluidity long-operation-period polyurethane urea cement concrete mortar terrace |
| CN112456938B (en) * | 2020-12-10 | 2022-08-26 | 上海阳森精细化工有限公司 | High-fluidity long-operation-period polyurethane urea cement concrete mortar terrace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110903056B (en) | High-strength self-compacting fair-faced concrete and preparation method thereof | |
| CN105294049B (en) | The patching material and cement concrete pavement quick service method of special cement base | |
| CN110105022B (en) | High-strength super-frost-resistant dry-hard concrete material and preparation method thereof | |
| CN104926253A (en) | Pavement/bridge deck concrete fast mending material and application thereof | |
| CN104402339A (en) | Pervious concrete and construction method thereof | |
| CN111533512B (en) | Preparation method of ductility delayed coagulation fine aggregate concrete with initial setting time of 48-72 h | |
| CN103771796B (en) | Thin-layer pavement patching mortar | |
| CN111574164A (en) | Rapid repairing material for super-early-strength shrinkage compensation road bridge and preparation method thereof | |
| CN109797620B (en) | Anti rut road surface pavement structure of heavy traffic wholeness based on combined material | |
| CN113698170B (en) | High-performance pervious concrete rapid repairing material and preparation method and application thereof | |
| CN102320793A (en) | Quick-hardening self-compacting anti-cracking high-performance grouting material | |
| CN103360009A (en) | Black high-strength concrete pouring material for rapid repairing of city road inspection well | |
| CN114853411B (en) | High-damping full-recycled aggregate concrete ink material for 3D printing and preparation method | |
| CN110862250B (en) | High-viscosity non-shrinkage cement-based frosted floor material and paving process thereof | |
| CN106800400A (en) | A kind of preparation method and applications of road repair mortar dry powder | |
| CN107721328B (en) | Rapid traffic repairing material for local plate replacement of cement concrete pavement and construction method | |
| CN111747713A (en) | Early-strength self-leveling concrete pavement rapid repairing material and preparation method thereof | |
| CN113636802A (en) | Ultrahigh-performance concrete and preparation method thereof | |
| CN106186863A (en) | Preparation method of rapid repairing material for concrete pavement | |
| CN100450966C (en) | Quick repairing agent for cement concrete | |
| CN114276049B (en) | Environment-friendly asphalt-cement composite material, preparation method and construction process | |
| KR100833133B1 (en) | Mortar composition for reinforcement and construction method by use thereof | |
| CN106927752B (en) | Rubber super-early-strength concrete and preparation method thereof | |
| CN114436621A (en) | Alkali-activated composite recycled powder recycled aggregate pervious concrete and preparation method thereof | |
| CN109553327B (en) | Concrete additive and preparation method and application thereof |
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: 20201009 |
|
| RJ01 | Rejection of invention patent application after publication |