CN112479632A - Unsaturated polyester concrete for pavement restoration and preparation method thereof - Google Patents
Unsaturated polyester concrete for pavement restoration and preparation method thereof Download PDFInfo
- Publication number
- CN112479632A CN112479632A CN202011261821.2A CN202011261821A CN112479632A CN 112479632 A CN112479632 A CN 112479632A CN 202011261821 A CN202011261821 A CN 202011261821A CN 112479632 A CN112479632 A CN 112479632A
- Authority
- CN
- China
- Prior art keywords
- unsaturated polyester
- parts
- concrete
- pavement
- aggregate
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/18—Polyesters; Polycarbonates
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
The invention belongs to the technical field of pavement restoration, and particularly relates to unsaturated polyester concrete for pavement restoration and a preparation method thereof, wherein the unsaturated polyester concrete comprises the following raw materials: modified unsaturated polyester, aggregate, fiber and anti-aging agent; according to the invention, the unsaturated polyester is modified by the liquid nitrile rubber, the liquid nitrile rubber and the unsaturated polyester are both liquid, the compatibility is good, the liquid nitrile rubber improves the toughness of the unsaturated polyester and also improves the low-temperature bending performance, the modification process is simple and easy to implement, the modified unsaturated polyester is used as an adhesive, the problem of 'jumping' caused by inconsistent rigidity between different materials is solved, the self-made anti-aging agent is added, the problem of easy aging of resin concrete is solved, the wear resistance is improved, and the selected aggregate is obtained by recycling and crushing the old asphalt pavement milling material, so that the ideas of changing waste into valuables, saving energy and protecting environment can be well reflected.
Description
Technical Field
The invention belongs to the technical field of pavement maintenance and repair, and particularly relates to unsaturated polyester concrete for pavement repair and a preparation method thereof.
Background
By 2019, the total mileage of the Chinese expressway reaches 14.26 kilometers, and the Chinese expressway is the first in the world, wherein most of the Chinese expressway is provided with asphalt pavements. Asphalt pavements are various types of pavements formed by spreading and rolling asphalt concrete. The newly-built asphalt pavement is flat, dark black and excellent in pavement performance, but as time goes on, due to the comprehensive influence of various factors such as environment, climate and traffic load, the asphalt pavement is gradually aged, and damages such as oil bleeding, rutting and cracks in different degrees occur, so that the service performance of the pavement is reduced. The pit is one of typical and common diseases which have the greatest influence on the service performance of the asphalt pavement, and the traditional repairing material is prepared by taking asphalt as a bonding agent, adding a diluent and preparing the asphalt concrete type repairing material with specific-grade mineral aggregate. After the asphalt concrete milling material is abandoned, the environment for human existence is seriously polluted and resources are wasted, and how to utilize the abandoned milling material to change waste into valuable is significant and especially necessary nowadays when environmental protection and energy conservation are increasingly emphasized.
With the increasing awareness of energy conservation and environmental protection in recent years, the number of novel and environment-friendly pavement repair materials is increasing, various resin concretes become the object of controversial research, and compared with common concretes, the resin concretes have the following advantages: the concrete has excellent durability and good mechanical properties, the tensile strength, the compressive strength and the bending strength of the concrete are higher than those of common concrete, and the impact resistance, the wear resistance, the freezing resistance, the impermeability, the water resistance and the chemical corrosion resistance of the concrete are good; secondly, because the strength of the resin concrete is increased more quickly than that of common cement concrete, the resin concrete can be cured at normal temperature and low temperature, and the strength of 24 hours can reach 80 percent of the final strength; thirdly, the resin concrete is an excellent rapid repairing material because of good adhesion with most materials.
The patent CN103086643A discloses a self-compacting fast-curing pavement patching material and a preparation method and application thereof, which consists of compact aggregate, thermoplastic resin binder and heat-initiated latent curing agent, wherein the aggregate needs to be heated to 800 ℃ of 700-; the patent CN105712669A discloses a geopolymer-fiber road pavement patching material and a preparation method thereof, which mainly utilizes materials such as industrial waste residue mineral components and the like to form an inorganic high-performance polymer cementing material with a cementing structure through an alkali activator, has environment-friendly materials with high compression resistance and high breaking strength, and is mainly used for the rush repair and reinforcement of cement concrete pavements; patent CN105802041A discloses an asphalt pavement patching material and a preparation method thereof, wherein the asphalt pavement patching material is prepared from an organic matrix, reinforcing particles, reinforcing fibers and an auxiliary agent, wherein the reinforcing particles need to be heated to 1900 ℃ during preparation, the consumed energy is large, and the economic and environmental protection properties are poor; patent CN111087774A discloses a pavement patching material and a preparation method thereof, wherein polylactic acid is modified and combined with fraxinus mandshurica to form a wood-plastic composite patching base material with high bonding stability, castor oil containing more ester groups, trimethylchlorosilane and a binder are added into the base material for blending and grinding, the ester groups can be well dispersed to contribute to the formation of a water film, the water-resistant bonding stability is improved, pavement patching is facilitated in a humid environment, and the compressive strength is poor.
The prior pavement patching material mainly has the following problems that petroleum asphalt is a petroleum byproduct, belongs to non-renewable energy, has limited yield, causes excessive consumption of petroleum asphalt resources due to patching by the petroleum asphalt, has poor low-temperature resistance, low bonding strength with old oil surface and high aging speed under the action of hot oxygen and photo-oxygen; rigidity among materials is not coordinated, and a 'jumping' phenomenon that a vehicle jumps and impacts is easily generated when the vehicle passes through.
Disclosure of Invention
In order to solve the problems, the patent discloses unsaturated polyester concrete for pavement repair, which is realized by the following technical method:
the unsaturated polyester concrete for pavement repair comprises the following raw materials in parts by weight: 8-15 parts of modified unsaturated polyester, 90-100 parts of aggregate, 0.12-0.24 part of fiber and 3-5 parts of anti-aging agent;
further, the modified unsaturated polyester comprises the following raw materials in parts by weight: 88-92 parts of unsaturated polyester, 0.5-1.5 parts of initiator, 0.5-1.5 parts of accelerator, 0.8-1.0 part of polymerization inhibitor and 8-12 parts of liquid nitrile rubber;
further, the content of acrylic anhydride in the liquid nitrile rubber is between 26% and 29%, and the viscosity of the liquid nitrile rubber is between 3000 mPa & s and 5000mPa & s;
further, the initiator is one of Methyl Ethyl Ketone Peroxide (MEKP) and Benzoyl Peroxide (BPO), the polymerization inhibitor is 1, 4-benzenediol, the accelerator is one of cobalt isooctanoate and N, N-dimethyl aniline, and the unsaturated polyester is m-benzene type unsaturated polyester;
further, the aggregate is an old asphalt pavement milling material, is treated by methods such as recovery, crushing, screening and the like, and is mixed with new aggregate if necessary, so that the grading meets the AC-13 grading range in Table 5.3.2-2 of technical Specification for construction of asphalt pavement for highways JTG F40-2004(5.3.2), and the specific grading range is shown in Table 1;
further, the fiber is one or more of glass fiber, sisal, hemp, coconut fiber or sugarcane fiber;
further, the anti-aging agent comprises the following raw materials in parts by weight: 30-35 parts of carbon black, 55-60 parts of waste tire rubber powder and 5-10 parts of organic montmorillonite;
further, the unsaturated polyester concrete is prepared by the following method:
(1) preparation of modified unsaturated polyester: putting liquid nitrile rubber and unsaturated polyester into a stirrer, stirring for 120-150 s at the rotating speed of 200-250 rpm, adding an initiator, stirring for 55-60 s at the speed of 100-120 rpm, adding a polymerization inhibitor, stirring for 55-60 s at the same speed, finally adding an accelerator, and stirring for 55-60 s at the same speed to obtain modified unsaturated polyester;
(2) preparation of the anti-aging agent: placing carbon black, waste tire rubber powder and organic montmorillonite in a planetary ball mill, and performing ball milling for 10-12 h at a revolution speed of 200-250 rpm and a rotation speed of 300-350 rpm to obtain an anti-aging agent;
(3) preparation of aggregate: recovering, crushing and screening the milling material of the old asphalt pavement, and blending the milling material with a new aggregate if necessary to ensure that the grading meets the AC-13 grading range in the technical Specification for constructing asphalt pavements for highways JTG F40-2004(5.3.2) table 5.3.2-2;
(4) preparing modified unsaturated polyester concrete: and (3) weighing the modified unsaturated polyester prepared in the step (1), adding fibers, the anti-aging agent prepared in the step (2) and the aggregate obtained in the step (3), and placing the mixture in a stirrer to be uniformly mixed to obtain the modified unsaturated polyester concrete.
The invention has the following technical effects:
the unsaturated polyester is a linear high molecular compound with multifunctional groups, a backbone of the unsaturated polyester is provided with a polyester chain bond and an unsaturated double bond, two ends of a macromolecular chain are respectively provided with a carboxyl group and a hydroxyl group, and the unsaturated double bond and an ethylene-based monomer generate copolymerization crosslinking reaction to quickly harden the unsaturated polyester, so that the unsaturated polyester can be used for quickly repairing a road surface; the liquid butyl rubber is in a viscous liquid state at normal temperature by taking butadiene and acrylonitrile as main chain structures, has good oil resistance and adhesiveness, and has good fluidity; the unsaturated polyester is modified by the liquid nitrile rubber, the liquid nitrile rubber can be well dispersed in the unsaturated polyester which is liquid to form an adhesive with strong adhesive force and good oil resistance, the phenomenon of 'jumping' caused by uncoordinated rigidity among different materials is better solved, and the toughness and the low-temperature bending property of the unsaturated polyester concrete can be greatly improved; the carbon black, the waste tire rubber powder and the like are prepared into the anti-aging agent, so that the anti-aging agent has environmental protection property on the premise of enhancing peptization of the polyester material, slowing down oxidation and obviously improving the ultraviolet resistance and wear resistance of unsaturated polyester concrete; the method is simple to operate and low in raw material cost, changes waste into valuable and saves cost at the same time.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The unsaturated polyester concrete for pavement repair comprises the following raw materials in parts by weight: 8-15 parts of modified unsaturated polyester, 90-100 parts of aggregate, 0.12-0.24 part of fiber and 3-5 parts of anti-aging agent;
the fiber is one or more of glass fiber, sisal, hemp, coconut fiber or sugarcane fiber;
the modified unsaturated polyester comprises the following raw materials in parts by weight: 88-92 parts of unsaturated polyester, 0.5-1.5 parts of initiator, 0.5-1.5 parts of accelerator, 0.8-1.0 part of polymerization inhibitor and 8-12 parts of liquid nitrile rubber;
the liquid nitrile rubber has the acrylic anhydride content of 26-29% and the viscosity of 3000-5000 mPa & s; the initiator is one of Methyl Ethyl Ketone Peroxide (MEKP) and Benzoyl Peroxide (BPO), the polymerization inhibitor is 1, 4-benzenediol, the accelerator is one of cobalt isooctanoate and N, N-dimethylaniline, and the unsaturated polyester is m-benzene unsaturated polyester;
the anti-aging agent comprises the following raw materials in parts by weight: 30-35 parts of carbon black, 55-60 parts of waste tire rubber powder and 5-10 parts of organic montmorillonite;
the unsaturated polyester concrete is prepared by the following method:
(1) preparation of modified unsaturated polyester: putting liquid nitrile rubber and unsaturated polyester into a stirrer, stirring for 120-150 s at the rotating speed of 200-250 rpm, adding an initiator, stirring for 55-60 s at the speed of 100-120 rpm, adding a polymerization inhibitor, stirring for 55-60 s at the same speed, finally adding an accelerator, and stirring for 55-60 s at the same speed to obtain modified unsaturated polyester;
(2) preparation of the anti-aging agent: placing carbon black, waste tire rubber powder and organic montmorillonite in a planetary ball mill, and performing ball milling for 10-12 h at a revolution speed of 200-250 rpm and a rotation speed of 300-350 rpm to obtain an anti-aging agent;
(3) obtaining of aggregate: recovering, crushing and screening the milling material of the old asphalt pavement, and blending the milling material with a new aggregate if necessary to ensure that the grading meets the AC-13 grading range in the technical Specification for constructing asphalt pavements for highways JTG F40-2004(5.3.2) table 5.3.2-2, wherein the specific grading range is shown in table 1;
(4) preparing modified unsaturated polyester concrete: and (3) weighing the modified unsaturated polyester prepared in the step (1), adding fibers, the anti-aging agent prepared in the step (2) and the aggregate obtained in the step (3), and placing the mixture in a stirrer to be uniformly mixed to obtain the modified unsaturated polyester concrete.
Example 1
The unsaturated polyester concrete for pavement restoration is prepared by the following steps:
(1) preparation of modified unsaturated polyester: weighing 320g of liquid nitrile rubber and 3.52kg of unsaturated polyester, placing the liquid nitrile rubber and the unsaturated polyester in a stirrer, stirring the mixture for 120s at the rotating speed of 200rpm, adding 20g of methyl ethyl ketone peroxide into the mixture, stirring the mixture for 55s at the speed of 100rpm, adding 32g of 1, 4-benzenediol into the mixture, stirring the mixture for 55s at the same speed, finally adding 20g of cobalt isooctanoate into the mixture, and stirring the mixture for 55s at the same speed to obtain modified unsaturated polyester;
(2) preparation of the anti-aging agent: weighing 0.6kg of carbon black, 1.1kg of waste tire rubber powder and 0.1kg of organic montmorillonite, placing the mixture in a planetary ball mill, and performing ball milling for 10 hours at a revolution speed of 200rpm and a rotation speed of 300rpm to obtain the anti-aging agent;
(3) obtaining of aggregate: recovering, crushing and screening the old asphalt pavement milling material, blending the old asphalt pavement milling material with new aggregate, and carrying out grading test on the obtained aggregate according to JTG E20-2011(T0725-2000) of road engineering asphalt and asphalt mixture test regulations, wherein the grading test analysis result of the aggregate meeting the grading requirement is shown in Table 2;
(4) preparing modified unsaturated polyester concrete: weighing 2.4kg of the modified unsaturated polyester prepared in the step (1), adding 36g of glass fiber, 0.9kg of anti-aging agent prepared in the step (2) and 27g of aggregate obtained in the step (3), and uniformly mixing in a stirrer to obtain modified unsaturated polyester concrete;
example 2
The unsaturated polyester concrete for pavement restoration is prepared by the following steps:
(1) preparation of modified unsaturated polyester: weighing 400g of liquid nitrile rubber and 3.6kg of unsaturated polyester, placing the liquid nitrile rubber and the unsaturated polyester in a stirrer, stirring the mixture for 135s at the rotating speed of 225rpm, adding 40g of methyl ethyl ketone peroxide into the mixture, stirring the mixture for 57s at the speed of 110rpm, adding 36g of 1, 4-benzenediol into the mixture, stirring the mixture for 57s at the same speed, finally adding 40g of cobalt isooctanoate into the mixture, and stirring the mixture for 57s at the same speed to obtain modified unsaturated polyester;
(2) preparation of the anti-aging agent: the same as example 1;
(3) obtaining of aggregate: the same as example 1;
(4) preparing modified unsaturated polyester concrete: weighing 3.45g of the modified unsaturated polyester prepared in the step (1), adding 54g of glass fiber, 1.2kg of the anti-aging agent prepared in the step (2) and 28.5g of aggregate prepared in the step (3), and uniformly mixing in a stirrer to obtain modified unsaturated polyester concrete;
example 3
The unsaturated polyester concrete for pavement restoration is prepared by the following steps:
(1) preparation of modified unsaturated polyester: 480g of liquid nitrile rubber and 3.68kg of unsaturated polyester are weighed and placed in a stirrer, the mixture is stirred for 150s at the rotating speed of 250rpm, 60g of methyl ethyl ketone peroxide is added into the mixture, the mixture is stirred for 60s at the speed of 120rpm, 40g of 1, 4-benzenediol is added into the mixture, the mixture is stirred for 60s at the same speed, and finally, 60g of cobalt isooctanoate is added into the mixture, and the mixture is stirred for 60s at the same speed, so that modified unsaturated polyester is obtained;
(2) preparation of the anti-aging agent: the same as example 1;
(3) obtaining of aggregate: the same as example 1;
(4) preparing modified unsaturated polyester concrete: weighing 4.5kg of the modified unsaturated polyester prepared in the step (1), adding 72g of glass fiber, 1.5kg of the anti-aging agent prepared in the step (2) and 30kg of aggregate obtained in the step (3), and uniformly mixing in a stirrer to obtain modified unsaturated polyester concrete;
example 4:
the unsaturated polyester concrete for pavement restoration is prepared by the following steps:
(1) preparation of modified unsaturated polyester: weighing 320g of liquid nitrile rubber and 3.52kg of unsaturated polyester, placing the liquid nitrile rubber and the unsaturated polyester in a stirrer, stirring the mixture for 120s at the rotating speed of 200rpm, adding 20g of benzoyl peroxide into the mixture, stirring the mixture for 55s at the speed of 100rpm, adding 32g of 1, 4-benzenediol into the mixture, stirring the mixture for 55s at the same speed, adding 20g of N, N-dimethylaniline into the mixture, and stirring the mixture for 55s at the same speed to obtain modified unsaturated polyester;
(2) preparation of the anti-aging agent: weighing 0.7kg of carbon black, 1.2kg of waste tire rubber powder and 0.2kg of organic montmorillonite, placing the mixture in a planetary ball mill, and performing ball milling for 12 hours at the revolution speed of 250rpm and the rotation speed of 350rpm to obtain the anti-aging agent;
(3) obtaining of aggregate: the same as example 1;
(4) preparing modified unsaturated polyester concrete: weighing 2.4kg of the modified unsaturated polyester prepared in the step (1), adding 36g of the ramie, 0.9kg of the anti-aging agent prepared in the step (2) and 27kg of the aggregate obtained in the step (3), and uniformly mixing in a stirrer to obtain modified unsaturated polyester concrete;
example 5:
the unsaturated polyester concrete for pavement restoration is prepared by the following steps:
(1) preparation of modified unsaturated polyester: weighing 400g of liquid nitrile rubber and 3.6kg of unsaturated polyester, placing the liquid nitrile rubber and the unsaturated polyester in a stirrer, stirring the mixture for 135s at the rotating speed of 225rpm, adding 40g of benzoyl peroxide into the mixture, stirring the mixture for 57s at the speed of 110rpm, adding 36g of 1, 4-benzenediol into the mixture, stirring the mixture for 57s at the same speed, adding 40g of N, N-dimethylaniline into the mixture, and stirring the mixture for 57s at the same speed to obtain modified unsaturated polyester;
(2) preparation of the anti-aging agent: the same as example 4;
(3) obtaining of aggregate: the same as example 1;
(4) preparing modified unsaturated polyester concrete: weighing 3.45g of the modified unsaturated polyester prepared in the step (1), adding 54g of the ramie, 1.2kg of the anti-aging agent prepared in the step (2) and 28.5kg of the aggregate prepared in the step (3), and uniformly mixing in a stirrer to obtain modified unsaturated polyester concrete;
example 6:
the unsaturated polyester concrete for pavement restoration is prepared by the following steps:
(1) preparation of modified unsaturated polyester: 480g of liquid nitrile rubber and 3.68kg of unsaturated polyester are weighed and placed in a stirrer, the mixture is stirred for 150s at the rotating speed of 250rpm, 60g of benzoyl peroxide is added into the mixture, the mixture is stirred for 60s at the speed of 120rpm, 40g of 1, 4-benzenediol is added into the mixture, the mixture is stirred for 60s at the same speed, and finally, 60g of N, N-dimethylaniline is added into the mixture, and the mixture is stirred for 60s at the same speed, so that modified unsaturated polyester is obtained;
(2) preparation of the anti-aging agent: the same as example 4;
(3) obtaining of aggregate: the same as example 1;
(4) preparing modified unsaturated polyester concrete: weighing 4.5kg of the modified unsaturated polyester prepared in the step (1), adding 72g of ramie, 1.5kg of the anti-aging agent prepared in the step (2) and 30kg of the aggregate obtained in the step (3), and uniformly mixing in a stirrer to obtain modified unsaturated polyester concrete;
and (3) low-temperature performance detection: the epoxy resin mixtures obtained in examples 1 to 6 were subjected to a low-temperature bending resistance test by referring to "road engineering asphalt and asphalt mixture test procedure" JTG E20-2011(T0715-2011), wherein the test pieces were prismatic and had the dimensions: the length was 250 mm. + -. 2.0mm, the width was 30 mm. + -. 2.0mm, and the height was 35 mm. + -. 2.0mm, and the average values of the flexural tensile strengths at failure were 16.1MPa, 15.9MPa, 16.3MPa, 15.2MPa, 15.3MPa, and 15.7MPa, respectively, as measured for the test pieces of examples 1 to 6, for each of the 3 test pieces of example.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The unsaturated polyester concrete for pavement restoration is characterized by comprising the following raw materials in parts by weight: 8-15 parts of modified unsaturated polyester, 90-100 parts of aggregate, 0.12-0.24 part of fiber and 3-5 parts of anti-aging agent.
2. The unsaturated polyester concrete for pavement restoration according to claim 1, wherein the modified unsaturated polyester comprises the following raw materials in parts by weight: 88-92 parts of unsaturated polyester, 0.5-1.5 parts of initiator, 0.5-1.5 parts of accelerator, 0.8-1.0 part of polymerization inhibitor and 8-12 parts of liquid nitrile rubber.
3. The unsaturated polyester concrete for pavement restoration according to claim 2, wherein the liquid nitrile rubber has an acrylic anhydride content of 26-29% and a viscosity of 3000-5000 mPa-s.
4. The unsaturated polyester concrete for pavement restoration according to claim 2, wherein the initiator is one of methyl ethyl ketone peroxide and benzoyl peroxide; the accelerator is one of cobalt iso-octoate and N, N-dimethylaniline; the polymerization inhibitor is 1, 4-benzenediol; the unsaturated polyester is m-benzene unsaturated polyester.
5. The unsaturated polyester concrete for pavement restoration according to claim 1, wherein the fibers are one or more of glass fibers, sisal, hemp, coconut fibers and sugarcane fibers.
6. The unsaturated polyester concrete for pavement restoration according to claim 1, wherein the anti-aging agent comprises the following raw materials in parts by weight: 30-35 parts of carbon black, 55-60 parts of waste tire rubber powder and 5-10 parts of organic montmorillonite.
7. A method for preparing unsaturated polyester concrete for pavement restoration according to any one of claims 1 to 6, wherein the unsaturated polyester concrete is prepared by the following method:
(1) preparation of modified unsaturated polyester: putting liquid nitrile rubber and unsaturated polyester into a stirrer, stirring for 120-150 s at the rotating speed of 200-250 rpm, adding an initiator, stirring for 55-60 s at the speed of 100-120 rpm, adding a polymerization inhibitor, stirring for 55-60 s at the same speed, adding an accelerator, and stirring for 55-60 s at the same speed to obtain modified unsaturated polyester;
(2) preparation of the anti-aging agent: placing carbon black, waste tire rubber powder and organic montmorillonite in a planetary ball mill, performing ball milling for 10-12 h at a revolution speed of 200-250 rpm and a rotation speed of 300-350 rpm to obtain an anti-aging agent;
(3) preparation of aggregate: recovering and crushing the old asphalt pavement milling material, screening the crushed old asphalt pavement milling material, and blending the screened old asphalt pavement milling material with new aggregate to obtain aggregate;
(4) preparing modified unsaturated polyester concrete: and (3) adding fibers, the anti-aging agent prepared in the step (2) and the aggregate obtained in the step (3) into the modified unsaturated polyester prepared in the step (1), and uniformly mixing in a stirrer to obtain the modified unsaturated polyester concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011261821.2A CN112479632A (en) | 2020-11-12 | 2020-11-12 | Unsaturated polyester concrete for pavement restoration and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011261821.2A CN112479632A (en) | 2020-11-12 | 2020-11-12 | Unsaturated polyester concrete for pavement restoration and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112479632A true CN112479632A (en) | 2021-03-12 |
Family
ID=74930032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011261821.2A Pending CN112479632A (en) | 2020-11-12 | 2020-11-12 | Unsaturated polyester concrete for pavement restoration and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112479632A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921798A (en) * | 2021-04-06 | 2021-06-08 | 孙正东 | Construction method of bridge expansion joint |
| CN116003023A (en) * | 2022-12-28 | 2023-04-25 | 湖南科技大学 | Modified glass fiber powder reinforced polyurethane concrete and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101624950B1 (en) * | 2016-01-25 | 2016-05-27 | 주식회사 유버스 | Mortar composition for repairing and reinforcing concrete structures, and method of repairing and reinforcing concrete structures using the same |
| CN109401519A (en) * | 2018-12-14 | 2019-03-01 | 大连理工大学 | A kind of bituminous pavement repair materials |
| CN111087197A (en) * | 2020-01-15 | 2020-05-01 | 长安大学 | Liquid nitrile rubber toughened unsaturated polyester resin concrete and preparation method thereof |
-
2020
- 2020-11-12 CN CN202011261821.2A patent/CN112479632A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101624950B1 (en) * | 2016-01-25 | 2016-05-27 | 주식회사 유버스 | Mortar composition for repairing and reinforcing concrete structures, and method of repairing and reinforcing concrete structures using the same |
| CN109401519A (en) * | 2018-12-14 | 2019-03-01 | 大连理工大学 | A kind of bituminous pavement repair materials |
| CN111087197A (en) * | 2020-01-15 | 2020-05-01 | 长安大学 | Liquid nitrile rubber toughened unsaturated polyester resin concrete and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921798A (en) * | 2021-04-06 | 2021-06-08 | 孙正东 | Construction method of bridge expansion joint |
| CN116003023A (en) * | 2022-12-28 | 2023-04-25 | 湖南科技大学 | Modified glass fiber powder reinforced polyurethane concrete and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101085871B (en) | Asphalt modified by epoxy resin and rubber powder | |
| CN109180077B (en) | Asphalt mixture and production process thereof | |
| CN104402311B (en) | A kind of rubber powder modified asphalt compound and preparation method thereof | |
| CN112479632A (en) | Unsaturated polyester concrete for pavement restoration and preparation method thereof | |
| CN109704648B (en) | Recycled asphalt concrete and preparation method thereof | |
| CN101643636A (en) | Water-base joint grouting glue for normal temperature road | |
| CN109627686B (en) | Thin-layer paving material suitable for wet road bridge deck and preparation method thereof | |
| Wang et al. | Advanced cold patching materials (CPMs) for asphalt pavement pothole rehabilitation: State of the art | |
| CN109095828B (en) | Asphalt concrete and production process thereof | |
| CN103421467A (en) | High-performance rubber asphalt pouring sealant and preparation method thereof | |
| CN109337297B (en) | High-asphalt-content cold-mix epoxy asphalt for road and bridge pavement and preparation method and application thereof | |
| CN104231995A (en) | Low-temperature rapidly cured acrylic ester modified epoxy resin joint sealant used in road and bridge | |
| CN102898084A (en) | High-intensity high-toughness coarse aggregate, preparation method thereof and concrete prepared from high-intensity high-toughness coarse aggregate | |
| CN109880384A (en) | A kind of composite modified high-viscosity asphalt of environment-friendly type and preparation method | |
| CN113235351B (en) | Airport pavement structure with asphalt layer paved on old cement airport runway and paving method thereof | |
| CN102910861A (en) | Asphalt mixture with high anti-rut capability and preparation method therefor | |
| KR101844847B1 (en) | Polymer-Asphalt composite road repair materials | |
| CN111574186B (en) | Rapid repair material for bridge expansion joint and preparation method thereof | |
| CN116789393A (en) | Emulsifier type cold-mixing and cold-paving asphalt mixture and preparation method thereof | |
| CN101250043A (en) | Rapid mending agent for microscopic checks of airport pavement and preparation thereof | |
| CN112408856A (en) | Environment-friendly pavement rapid repairing material and preparation method thereof | |
| Xia et al. | Road performance comprehensive evaluation of polymer modified emulsified asphalt fiber microsurfacing | |
| CN113845332A (en) | Preparation method of polyurethane concrete and rapid repair method of polyurethane concrete for airport pavement | |
| CN114804726A (en) | EME-14 high-modulus asphalt concrete and preparation method thereof | |
| CN112250347A (en) | Asphalt concrete suitable for low-heat valley areas and preparation method 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210312 |