CN113929355B - Road quick-repair consolidation material prepared from recycled material and preparation method and application thereof - Google Patents
Road quick-repair consolidation material prepared from recycled material and preparation method and application thereof Download PDFInfo
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- CN113929355B CN113929355B CN202111209513.XA CN202111209513A CN113929355B CN 113929355 B CN113929355 B CN 113929355B CN 202111209513 A CN202111209513 A CN 202111209513A CN 113929355 B CN113929355 B CN 113929355B
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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
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/18—Polyesters; Polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/676—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
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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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/096—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating and filling
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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
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
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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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a road quick-repair consolidation material prepared by utilizing a recycled material, and a preparation method and application thereof, wherein the road quick-repair consolidation material comprises the following raw materials in parts by weight: 500 parts of graded aggregate; 0-200 parts of color matching filler; 0-200 parts of green stone; 0-300 parts of limestone powder; 0-400 parts of regenerated reinforcing fiber; 60-250 parts of environment-friendly regenerated resin; 0-15 parts of a plasticizer; 0-30 parts of a flame retardant; 0.5-5 parts of an initiator; 0.5-3 parts of an accelerator; 0-2 parts of a lubricant; 0-5 parts of high-purity oxygen. The road quick repair bonding material can be used for quickly repairing road surface wounds and cracks, is low in cost, causes little pollution to the environment and little harm to human bodies, and solves the difficult problems of configuration, transportation and construction period of the road quick repair material on the premise of not influencing the quick curing performance.
Description
Technical Field
The invention relates to the field of road engineering materials, in particular to a road quick-repair consolidation material prepared by utilizing a recycled material, and a preparation method and application thereof.
Background
Due to the large investment of the country to the infrastructure, the rapid development of the urbanization process and the rapid rise of the per-capita vehicle holding rate, the current road traffic pressure is increasingly improved. Under the repeated action of road congestion and engineering heavy-duty vehicles, cities and communicated trunk roads are often damaged in advance before the service life, the situations of local pavement damage, subgrade sinking, cracking, pot holes, ruts, sinking, loosening, net cracking, crowding and the like occur, and if the cities and the communicated trunk roads are not repaired in time, the cities and the communicated trunk roads can be rapidly developed and spread to the periphery, so that a road damage opening with a larger area is formed. The repair material and repair process adopted by road repair engineering must have the effects of quick curing, high-efficiency construction, early and strong performance, safety, environmental protection and the like, so that the road can be restored to pass under short-term maintenance even without maintenance.
Meanwhile, due to frequent natural disasters in recent years, a road emergency repair material with quick curing, high-efficiency construction, early strength, safety and environmental protection is urgently needed for the road to quickly pass through in the process of disaster resistance and relief. In emergency repair, the following three technologies can be adopted for repair on the basis of the existing road damage and destruction, and the technologies are respectively as follows: the method comprises a roadbed reinforcement technology, a retaining wall reinforcement technology and a pavement restoration technology, wherein the pavement restoration technology is the key point of emergency repair, and the problems of short emergency repair time, large engineering quantity, high manufacturing cost and the like cannot be satisfactorily solved so far.
Currently, the most common road repair materials mainly include concrete, asphalt materials and other polymer composite materials. The concrete structure has good mechanical property and durability, but the concrete is limited by the particle size and the fluidity of the concrete, so the concrete is generally only suitable for grouting treatment of wider (more than 3mm) cracks, and the concrete is inconvenient to construct or can not be constructed under the condition of rainy days; the asphalt material takes modified asphalt as a main body, although the curing time is short, the mechanical property of the formed material is poor, the compressive strength is low, in addition, the modified asphalt needs to be decocted or mixed on site, the process is complicated, the environment is easy to pollute, the construction time is long, and in addition, the defects of low cohesiveness, easy flowing under the high-temperature condition and the like exist; resin-based repair materials mainly include epoxy resins, polyurethane resins, acrylic resins, and the like, and are gradually emerging. The resin repair material solves the problems of heating, long maintenance time and the like of the traditional repair material, but has the problems of high price, low reaction speed, low strength, easy cracking and the like because of lack of pertinence and only direct use after the resin is mixed with aggregate or powder.
At present, some technical solutions related to resin-based road patching materials have been disclosed in the prior art, for example, in chinese patent application/patent No. CN201910257232.8, the invention discloses a resin-based road patching material, which comprises the following components in parts by weight: 100 parts of epoxy resin, 10-35 parts of curing agent, 500-600 parts of fine aggregate and 500-500 parts of color-mixing modifier. The curing agent is aliphatic polyamine curing agent, alicyclic polyamine curing agent, aromatic amine curing agent and anhydride curing agent, and the curing agent is prepared from the following components in percentage by weight (10-20): (5-10): (3-5): 1, and the color-adjusting modifier is obtained by modifying one or a mixture of a plurality of low-calcium fly ash, nickel slag powder and steel slag powder. The road repairing material disclosed by the invention has the advantages of fast improvement on short-term strength and suitability for fast rush repair of road surfaces. The disadvantages are that the cost of the raw material epoxy resin is high, the construction time is short and the control is impossible. The urban road maintenance amount is large, the existing cost of epoxy resin is about 3 ten thousand per ton, the raw material cost of each cubic road is 5000-10000 yuan, the difficulty is increased for large-area popularization of the technology, and the same problems exist in other technologies using epoxy resin or polyurethane resin and the like as polymer bonding materials.
Chinese patent application/patent No. CN201911360072.6 discloses a method for quickly repairing a road surface, which comprises forming a base layer reinforcing material by using low shrinkage unsaturated polyester resin, a diluent, an expanding agent, an accelerator and a polymerization inhibitor, adding a curing agent, pouring the curing agent into the base layer at the broken part of the road surface until the curing agent does not permeate, laying chopped basalt fiber, forming a surface layer repairing material by using an acrylate monomer, an acrylic resin polymer, a silane coupling agent, fly ash, talcum powder, quartz sand, a metal hydroxide flame retardant, an accelerator, a polymerization inhibitor and chopped basalt fiber, adding a curing agent, filling the road surface, and curing. The technical repairing method can not only reinforce the road base, but also repair the surface layer of the damaged parts such as pavement cracks and the like, thereby realizing the double functions of base reinforcement and surface layer repair. The technology still has the problems of short preservation time of the cured material, uncontrollable construction period, small application scene and the like, and cannot solve the technical contradiction between high curing speed (early strength and short curing time) and long storage time (controllable construction period) of the repair material, particularly the technology adopts unsaturated resin taking styrene as a diluent, and causes great safety problems to the environment and surrounding people due to the harmfulness of the styrene.
Meanwhile, with the proliferation of plastic products in recent years, the recycling of a large amount of polyester plastics after use becomes a social problem, and how to recycle the waste materials is an important subject restricting the national resource type and green development. The polyester plastics are divided into thermoplastic plastics and thermosetting plastics, wherein the recycling rate of the thermoplastic plastics such as polyester mineral water bottles and the like is relatively high, while the thermosetting polyester wastes such as glass fiber reinforced plastic composite materials, circuit boards, wind power blades and the like and redundant materials increase the utilization difficulty of the thermosetting polyester wastes because the binder is thermosetting polyester which is infusible and insoluble, and the treatment cost is extremely high because the polyester wastes can only be incinerated or buried together with cement through a cement kiln at present.
The cost of the recycled polyester is 10-20% of that of the new polyester material, if the cheap recycled polyester material is used as the raw material to develop the environment-friendly unsaturated polyester, and meanwhile, the polyester glass fiber composite material recycled fiber is used as the aggregate and the reinforcing material to prepare the rapid pavement repair bonding material, the cost problem in large-area municipal repair is solved, the environment-friendly property, the safety and the service performance of the rapid pavement repair bonding material meet the requirement and the standard of road repair, and the economic value and the social value of the rapid pavement repair bonding material can be perfectly reflected.
Disclosure of Invention
The invention provides a road quick repair consolidation material prepared by utilizing a recycled material, which can be used for quick repair of roads.
The technical scheme of the invention is as follows:
a road quick-repair consolidation material prepared by utilizing a recycled material comprises the following raw materials in parts by weight:
the high-purity oxygen has a density of about 1.3 kg/m at 20 ℃ under 1 standard atmospheric pressure 3 。
The preparation method of the road quick repair consolidation material comprises the following steps:
(1) weighing the environment-friendly regenerated resin according to the formula amount, stirring and dispersing the flame retardant and the accelerator into the environment-friendly regenerated resin, and grinding and dispersing; then adding an initiator, and uniformly dispersing;
(2) adding the graded aggregate, the color matching filler, the Qingshi particles, the Qingshi powder, the regenerated fibers and the lubricant into a mixing and stirring kettle, uniformly stirring, adding the mixture obtained in the step (1), and stirring until the color is uniform to obtain a rapid solidification material;
(3) packaging the rapid solidification material in batches in a polyolefin sealing bag, exhausting air, and injecting high-purity oxygen until the sealing bag is swelled; and fully and uniformly mixing oxygen and the material by shaking the sealing bag to obtain the road quick-repair consolidation material.
The initiator (e.g., methyl ethyl ketone peroxide) is decomposed under the catalysis of an accelerator (e.g., cobalt naphthenate) to generate an alkoxy radical, which is unstable and generates ethyl and peracetic acid mainly by decomposition and fragmentation. The unstable peroxy acid will continue to decompose to produce an acyloxy radical and a hydroxyl radical, which further decompose to produce a methyl or ethyl radical, the ethyl, methyl and hydroxyl radicals thus formed being the true initiator for initiating polymerization of the monomer. Oxygen has a very high-efficiency polymerization inhibition effect at low temperature, oxygen can react with free radicals of an initiator and macromolecular chain free radicals to generate inactive peroxide free radicals, copolymerization reaction can not be initiated at room temperature or slightly high temperature, and polymerization activity can be recovered as long as oxygen is volatilized or compacted to extrude the oxygen. The invention uses oxygen inhibition to prolong the curing time of the consolidation material, thereby fully prolonging the construction time on the basis of not reducing the curing activity and solving the technical problems of the contradiction between quick curing, short curing time and controllable construction time of the type of material.
The flame retardant is one or two of flame retardant melamine cyanurate MCA and flame retardant ammonium polyphosphate APP-2000; the grain diameter is less than or equal to 2 um.
In the preparation method of the road quick-repair consolidation material, grinding and dispersing the flame retardant and the environment-friendly regenerated resin together are necessary means for improving the flame retardant efficiency or reducing the using amount of the flame retardant, and if the flame retardant is dispersed in the aggregate, the flame retardant effect is obviously reduced.
The oxidant is one or more of methyl ethyl ketone peroxide, cyclohexanone peroxide, tert-butyl peroxybenzoate, diisopropyl peroxydicarbonate and dibutyl sebacate dispersion liquid.
The accelerant is one or more of cobalt naphthenate (8%), cobalt isooctanoate (8%), cobalt naphthenate (4%), manganese naphthenate (3%), lead naphthenate (10%), dibutyltin dilaurate, zinc stearate and methyl methacrylate dispersion liquid thereof.
The grading aggregate is composed of quartz sand grades with different grain diameters. Preferably, the graded aggregate comprises the following components in parts by weight:
the color matching filler is one or more of basalt powder, Qing mountain powder, iron ore powder and carbon black; the grain diameter of the color matching filler is 800 meshes to 20 meshes.
The green stone particles are green stone particles or green stone melon seed slices; one or more grades with a particle size of 0.2cm-1.2 cm.
Preferably, the regenerated reinforcing fiber is prepared by tearing, crushing and screening waste or redundant materials of the glass fiber reinforced plastic composite material; the size of the regenerated reinforced fiber is 80-8 meshes; preferably 60-20 mesh.
The fiber of the regenerated reinforced fiber obtained by crushing the glass fiber reinforced plastic composite material is provided with the protrusions of the residual cured resin, and has a dumbbell shape or a sugarcoated haw string shape, and meanwhile, the fiber surface contains the residual unsaturated polyester resin, so that the fiber has very good affinity and compatibility with the regenerated unsaturated polyester in the road fast-repair binding material, and has higher excellent performance than the reinforcement of common glass fiber or chemical fiber. The invention changes waste into valuable and carries out value-added utilization on the regenerated fiber of the glass fiber reinforced plastic.
The environment-friendly regenerated resin is obtained by diluting unsaturated polyester resin with an active diluent; the viscosity of the environment-friendly regenerated resin is 1800-12000mPa.s, and the acid value is 18-36 mgKOH/g; the unsaturated polyester resin is prepared by carrying out alcoholysis on PET waste and then carrying out polycondensation on the PET waste and maleic anhydride.
Preferably, the environment-friendly recycled resin comprises the following raw materials in parts by weight:
most preferably, the environment-friendly recycled resin comprises the following components in parts by weight:
preferably, the preparation method of the environment-friendly recycled resin comprises the following steps:
(i) crushing and drying the recovered PET waste to prepare PET polyester chips;
(ii) under the protection of nitrogen, sequentially putting PET polyester chips, diethylene glycol, propylene glycol and a catalyst into a reaction kettle according to a ratio, stirring and heating to 180 ℃, and preserving heat for 60-120 min; then heating to 200 ℃ until the acid value is less than or equal to 10mg KOH/g, and cooling to 150 ℃;
(iii) adding maleic anhydride and an antioxidant which are measured in proportion into the reaction kettle in the step (ii), heating to 180 ℃ under the protection of nitrogen, reacting for 15min, heating to 215 ℃, keeping the temperature, and continuing to react for 60-120min, wherein the reaction end point is obtained when the acid value reaches 18-36mg KOH/g;
(iv) and (5) cooling the polycondensation product obtained in the step (iii) to below 120 ℃, adding a polymerization inhibitor according to the proportion, stirring and dissolving, then adding a metered active diluent, stirring uniformly at 60-80 ℃, cooling to 45 ℃, and discharging to obtain the environment-friendly regenerated resin.
The PET waste material is synthesized by using phthalic anhydride (m-benzene) and dihydric alcohol as main raw materials.
The reactive diluent is one or more of methoxypolyethylene glycol (350) mono (meth) acrylate, methoxypolyethylene glycol (550) mono (meth) acrylate, 2-phenoxyethyl acrylate, phenoxytriethoxy acrylate, tetrahydrofurfuryl (meth) acrylate, N-vinyl pyrrolidone, hydroxyethyl methacrylate, isobornyl methacrylate, and diallyl phthalate.
Further preferably, the reactive diluent A comprises the following components in parts by weight of the raw materials:
100 parts of methoxy polyethylene glycol (350) monoacrylate;
50 parts of 2-phenoxyethyl acrylate;
50 parts of N-vinyl pyrrolidone.
The reactive diluent B comprises the following raw materials in parts by weight:
the reactive diluent C comprises the following raw materials in parts by weight:
100 parts of isobornyl methacrylate;
and 100 parts of phenoxy triethoxy acrylate.
Different reactive diluents and regenerated unsaturated polyester systems are selected, and the environment-friendly regenerated resin has rigidity and flexibility change through original preparation and combination of the different reactive diluents and application of a plasticizer. The prepared road quick-repair consolidation material has very excellent toughness and elasticity when being soft, and can be used for repairing semi-rigid pavements such as asphalt pavements by adjusting a glass fiber reinforcing agent; when the resin is rigid, the resin has small curing shrinkage, and can be used for repairing rigid structural pavements such as cement pavements, water stabilization layers and the like. Such properties are not available in other known polymeric rapid repair materials.
Preferably, the road quick-repair consolidation material prepared by utilizing the recycled material comprises the following raw materials in parts by weight:
the road fast-repairing cementing material is suitable for repairing road surface wounds. When the reactive diluent is the reactive diluent A, the road quick repair consolidation material is suitable for repairing the pavement of a cement road; when the reactive diluent is a reactive diluent B, the road quick repair consolidation material is suitable for asphalt road pavement repair; when the reactive diluent is the reactive diluent C, the road quick repair consolidation material is suitable for repairing the roadbed (water stabilization layer) of a cement road or an asphalt road.
The invention also provides a construction method for repairing road pavement wounds by using the rapid road repair solidification material, which comprises the following steps:
(I) drying the construction interface by using high-pressure air, and flatly paving the rapid road repair consolidation material on a construction site, wherein the thickness of each pavement is not more than 10-20 cm; after the pavement is paved, the pavement is vibrated and compacted, and a next layer is paved again and repeatedly until the pavement is leveled;
(II) paving release paper on the construction surface which is leveled with the road surface, and compacting by using a road roller to finish construction; after maintenance for 1-6h, can be passed after removing the release paper.
In order to improve the bonding strength of the new and old wound interfaces in road repair construction, preferably, the construction interfaces are dried by high-pressure air, then an interface treating agent is sprayed on the construction interfaces in a high-pressure atomization spraying mode, and then the road quick repair bonding material is paved;
the interface treating agent comprises the following raw materials in parts by weight:
the solvent is ethyl acetate.
Meanwhile, the invention can adjust the particle size grading and the resin content of the filler, so that the system has fluidity, and tiny cracks less than or equal to 3mm can be filled by pressurizing and punching, so that the application range of the system is greatly expanded.
Preferably, the road quick-repair consolidation material prepared by utilizing the recycled material comprises the following raw materials in parts by weight:
the road fast-repairing consolidation material is suitable for repairing cracks of a road surface which are less than or equal to 3mm, and the material for preparation is designed because the repairing dosage is very small each time.
The invention also provides a construction method for repairing cracks on a road pavement by using the rapid road repair consolidation material, which comprises the following steps: and determining the distribution condition of the cracks on the road surface by adopting crack detection equipment, designing and punching holes according to the distribution condition of the cracks on the road surface, pouring the road quick-repair consolidation material from the bottoms of the cracks, and enabling the vehicle to go on after consolidation.
Compared with the prior art, the invention has the beneficial effects that:
the large-scale popularization and application of new road rapid and road first-aid repair and emergency material technology must satisfy four conditions: firstly, the technical index meets or is higher than the requirement of the existing road quick repair; secondly, the cost is controllable or lower than that of the prior art; thirdly, the construction process is controllable, and large-scale implementation is facilitated; fourthly, the product is environment-friendly and pollution-free.
In light of the above factors, the present invention discloses a rapid repair polymer material for road, which uses a regenerated thermoplastic polyester resin as an environment-friendly adhesive and a regenerated thermosetting polyester composite material as a reinforcing fiber. (1) Preparing thermosetting unsaturated polyester as a binder by polyester recovery; the recycled glass fiber reinforced plastic material is used as a reinforcing fiber filler, so that the cost problem caused by large scale of rapid road repair is solved. (2) Through the selection and the proportion of the high-activity and low-volatility active diluents, the problems of environmental pollution and human body injury caused by the fact that styrene is used as the active diluents in the traditional thermosetting unsaturated resin are solved. (3) The oxygen inhibition technology is designed to solve the contradiction between curing activity and construction period of the two-component thermosetting resin, and the difficult problems of configuration, transportation and construction period of the road quick repair material are solved on the premise of not influencing quick curing performance.
Detailed Description
The present invention is described in further detail below by way of examples, which are intended to facilitate the understanding of the present invention without limiting it in any way.
The technology prepares unsaturated polyester matrix resin by recycling polyester, and then optimizes the active diluent with high polymerization rate, large reaction activity, low volatility and high environmental protection property through tests to reduce the resin viscosity and improve the curing property. The preparation of the environment-friendly regenerated resin comprises four steps of PET recovery, alcoholysis, polycondensation and dilution, wherein:
the preparation proportion of the environment-friendly regenerated resin comprises the following components (unit/kg):
the preparation process of the environment-friendly regenerated resin comprises the following steps:
(1) and (3) recovering PET, screening and crushing: removing other plastic and non-waste plastic components such as bottle caps, packaging paper and the like from the recycled PET bottles, then crushing and drying the PET bottles by using a screw crusher, and preparing polyester chips for later use.
(2) Alcoholysis reaction: under the protection of nitrogen, putting the recycled PET chips, diethylene glycol DEG, propylene glycol PG and a catalyst into a reaction bottle in sequence according to the proportion, stirring and heating to 180 ℃, and preserving heat for 60 min; then raising the temperature to 200 ℃, testing the acid value, cooling to 150 ℃ when the acid value is 5-10mg KOH/g, and carrying out polycondensation reaction.
(3) And (3) polycondensation reaction: adding the reaction raw materials of maleic anhydride MA and antioxidant which are proportioned and measured into a reaction kettle, and continuously heating under the protection of nitrogen. Gradually and slowly heating to 180 ℃, reacting for 15min, then heating at a heating rate of 215 ℃, keeping the reaction at a constant temperature for 60-120min, and determining that the acid value reaches 26mgKOH/g, thus obtaining the reaction end point.
(4) Diluting: cooling the polycondensation product to below 120 ℃, adding a polymerization inhibitor according to the proportion, stirring and dissolving, then adding different measured environment-friendly active diluents, stirring uniformly at 80 ℃, cooling to 45 ℃, and discharging to obtain the recovered PET unsaturated polyester resin. According to the mixture ratio, different resins A, B, C, D are prepared when different reactive diluents are selected.
Wherein the reactive diluent of resin A is (unit/kg):
methoxypolyethylene glycol (350) monoacrylate 100;
2-phenoxyethyl acrylate 50;
n-vinyl pyrrolidone 50.
Reactive diluents for resin B were (units/kg):
reactive diluents for resin C are (units/kg):
isobornyl methacrylate 100;
phenoxy triethoxy acrylate 100.
Reactive diluents for resin D were (units/kg):
150 parts of styrene;
methyl methacrylate 50.
Wherein, in order to improve the bonding strength of the new and old interfaces of the repaired wound, the resins in the table 1 are configured as interface treating agents to carry out on-site high-pressure spray gun atomization spraying treatment, and the spraying amount is 100-150g/m 2 。
TABLE 1 interfacial agent formulation
| Name of raw materials | Dosage (kilogram) |
| Resin A | 1 |
| Accelerator | 0.01 |
| Initiator | 0.015 |
| Solvent (ethyl acetate) | 0.5 |
Example 1 (resin A, Cement road surface repair)
The prepared road quick-repair binding material can be used for repairing the pavement of a cement road, before the road quick-repair binding material is prepared, the graded aggregate and the color matching filler are prepared, and the color and the granularity of the on-site pavement of the cement road are matched by finely adjusting the color matching filler.
A road quick repair consolidation material prepared by using a renewable material comprises the following raw materials in parts by weight:
a graded aggregate 500 comprising:
a color matching filler 150 comprising:
initiator 2.0, which includes:
the regenerated reinforced fiber is prepared by tearing, crushing and screening glass fiber reinforced plastic composite materials, and is generally selected from 80-8 meshes, preferably 60-20 meshes.
The preparation process comprises the following steps:
(1) accurately weighing the environment-friendly regenerated resin A according to the formula amount, stirring and dispersing the flame retardant and the accelerator into the environment-friendly regenerated resin A, dispersing for 15min by using a sand mill, taking out, adding the initiator, dispersing for about 2-3min by using a dissolving and dispersing paddle, and dispersing uniformly for later use.
(2) Adding the graded aggregate, the color matching filler, the green stone, the regenerated reinforcing fiber and the like into an artificial stone mixing and stirring kettle, uniformly stirring, then adding the resin mixture prepared in the step (1), and quickly stirring for 10-15min until the resin mixture is dispersed to be uniform in color, thus obtaining the quick solidification material.
(3) And packaging the rapid solidification material in batches in a sealed polyolefin plastic packaging bag, rapidly exhausting air, injecting quantitative high-purity oxygen until the sealing bag swells, and fully and uniformly mixing the oxygen and the material by shaking the bag, wherein the rapid solidification material is the rapid repair solidification material for the road after sealed packaging.
The road quick repair consolidation material prepared by the embodiment is suitable for surface construction of cement roads. Before repairing the quick repair consolidation material prepared in the embodiment, a construction interface is dried by high-pressure air, and the treatment agent is sprayed on the construction interface by adopting a high-pressure atomization spraying mode according to the proportion of the interface treatment agent. Then paving the quick repair curing agent on a construction site, paving each layer in one time until the thickness of each layer is not more than 20cm, performing vibration compaction after paving, and then continuing paving and performing vibration compaction until the layer is level with the road surface; after the pavement is leveled, release paper is paved on the construction surface, and then a small-sized road roller is used for compacting, thus completing construction. After 1 hour of maintenance, the surface release paper is removed to allow the product to pass. And the heavy-duty truck with the weight of more than 50 tons is forbidden to pass in 4 hours, and the truck is completely opened after 6 hours.
Example 2 (resin B, asphalt pavement restoration)
The prepared road quick-repair consolidation material can be used for repairing asphalt road surfaces, before the road quick-repair consolidation material is prepared, graded aggregate and color matching filler are prepared, and the color matching filler is finely adjusted to match the colors and the granularity of the on-site road surfaces of asphalt roads.
A road quick repair consolidation material prepared by using a renewable material comprises the following raw materials in parts by weight:
a graded aggregate 500 comprising:
a color matching filler 100 comprising:
initiator 3.5, which includes:
the preparation process comprises the following steps:
(1) accurately weighing the environment-friendly regenerated resin B according to the formula amount, stirring and dispersing the flame retardant, the accelerator and the plasticizer into the resin, dispersing for 15min by using a sand mill, taking out, adding the initiator, dispersing for about 2-3min by using a dissolving and dispersing paddle, and dispersing uniformly for later use.
(2) Adding the graded aggregate, the color matching filler, the green stone, the regenerated fiber and the like into an artificial stone mixing and stirring kettle, uniformly stirring, then adding the prepared resin, and quickly stirring for 10-15min until the resin is dispersed to be uniform in color, thus obtaining the quick solidification material.
(3) And packaging the rapid solidification material in batches in a sealed polyolefin plastic packaging bag, rapidly exhausting air, injecting quantitative high-purity oxygen until the sealing bag swells, and fully and uniformly mixing the oxygen and the material by shaking the bag, wherein the rapid solidification material is the rapid repair solidification material for the road after sealed packaging.
The road quick repair consolidation material prepared by the embodiment is suitable for asphalt road surface construction. Before repairing the quick repair consolidation material prepared in the embodiment, an asphalt construction interface is dried by high-pressure air, and the treating agent is sprayed on the construction interface by adopting a high-pressure atomization spraying mode according to the proportion of the interface treating agent. Then paving the quick repair curing agent on a construction site, paving each layer in one time until the thickness of each layer is not more than 10-15cm, vibrating and compacting after paving, and then continuously paving and vibrating and compacting until the quick repair curing agent is leveled with the road surface; after the pavement is leveled, release paper is paved on the construction surface, and then a small-sized road roller is used for compacting, thus completing construction. After 1 hour of maintenance, the surface release paper is removed to allow the product to pass. And a heavy-duty truck with the weight of more than 50 tons is forbidden to pass in 4 hours, and the truck is completely opened after 6 hours.
Example 3 (resin C, Water Stable layer repair)
The road fast-repairing consolidation material can be used for repairing the roadbed (water stabilization layer) of a cement road or an asphalt road, and the roadbed is not required to be colored.
A road quick-repair consolidation material prepared by using a regenerated material comprises the following raw materials in parts by weight:
a graded aggregate 500 comprising:
the preparation process comprises the following steps:
(1) accurately weighing the environment-friendly regenerated resin C according to the formula amount, stirring and dispersing the accelerant into the resin, dispersing for about 2-3min by using a dissolving and dispersing paddle, adding the accelerant into the resin, dispersing for 2-3min, and dispersing uniformly for later use.
(2) Adding the graded aggregate, the color matching filler, the green stone, the regenerated fiber and the like into an artificial stone mixing and stirring kettle, uniformly stirring, then adding the prepared resin, and quickly stirring for 10-15min until the resin is dispersed to be uniform in color, thus obtaining the quick solidification material.
The road quick repair consolidation material prepared by the embodiment is suitable for the construction of cement roads or asphalt road beds (water stabilization layers). Before repairing the quick repair consolidation material prepared in the embodiment, a construction interface is dried by high-pressure air, and the treatment agent is sprayed on the construction interface by adopting a high-pressure atomization spraying mode according to the proportion of the interface treatment agent. Then paving the quick repair curing agent on a construction site, paving each layer with a thickness of not more than 10cm in one time, vibrating and compacting after paving, and then continuously paving, vibrating and compacting until the layer is leveled with a stable layer of the original water; then medium-temperature asphalt or low-temperature asphalt is paved on the surface, and the vehicle can be started after the asphalt is paved.
Example 4 (resin A, crack repair)
The prepared road quick-repair consolidation material can be used for repairing micro cracks of cement road pavements and asphalt road pavements, and the grouting consolidation material does not need color matching because of the adoption of a tapping pressurization pouring process.
A road quick repair consolidation material prepared by utilizing a renewable material comprises the following raw materials in parts by weight (unit/g):
a graded aggregate 500 comprising
The preparation process comprises the following steps:
(1) accurately weighing the environment-friendly regenerated resin A according to the formula amount, stirring and dispersing the accelerant into the resin, adding the initiator, dispersing for about 2-3min by using a dissolving and dispersing paddle, and dispersing uniformly for later use.
(2) Adding the prepared aggregate and the limestone powder into a mixing and stirring kettle, stirring uniformly, then adding the prepared resin, and stirring quickly for 5-10min until the resin is dispersed into a fluid colloid with uniform color, thus obtaining the grouting type quick consolidation material.
The road quick repair consolidation material prepared by the embodiment is suitable for crack repair on the surface of a cement road and the surface of an asphalt road, and the material for preparation is designed due to the fact that the repair dosage is very small each time. The quick repair consolidation material slurry prepared by the embodiment is mainly used for repairing cracks with the thickness of less than 3mm, crack distribution conditions are determined by adopting crack detection equipment during construction, holes are drilled according to design, consolidation slurry is poured from the bottoms of the cracks, and the vehicle can be started after consolidation construction.
Example 5 (regeneration of resin A, but increase in amount)
The prepared road quick-repair binding material can be used for repairing the pavement of a cement road, before the road quick-repair binding material is prepared, the graded aggregate and the color matching filler are prepared, and the color and the granularity of the on-site pavement of the cement road are matched by finely adjusting the color matching filler.
A road quick repair consolidation material prepared by using a renewable material comprises the following raw materials in parts by weight:
a graded aggregate 500 comprising:
a color matching filler 150 comprising:
initiator 2.7, which includes:
the preparation process comprises the following steps:
(1) accurately weighing the environment-friendly regenerated resin A according to the formula amount, stirring and dispersing the flame retardant and the accelerant into the resin, dispersing for 15min by using a sand mill, taking out, adding the initiator, dispersing for about 2-3min by using a dissolving and dispersing paddle, and dispersing uniformly for later use.
(2) Adding the graded aggregate, the color matching filler, the green stone, the regenerated fiber and the like into an artificial stone mixing and stirring kettle, uniformly stirring, then adding the prepared resin, and quickly stirring for 10-15min until the resin is dispersed to be uniform in color, thus obtaining the quick solidification material.
(3) And packaging the rapid solidification material in batches in a sealed polyolefin plastic packaging bag, quickly exhausting air, injecting quantitative high-purity oxygen until the sealing bag is swelled, shaking the bag to fully mix the oxygen and the material, and then sealing and packaging to obtain the rapid repair solidification material for the road.
The road quick repair consolidation material prepared by the embodiment is suitable for surface construction of cement roads. Before repairing the quick repair consolidation material prepared in the embodiment, a construction interface is dried by high-pressure air, and the treatment agent is sprayed on the construction interface by adopting a high-pressure atomization spraying mode according to the proportion of the interface treatment agent. Then paving the quick repair curing agent on a construction site, paving each layer in one time until the thickness of each layer is not more than 20cm, performing vibration compaction after paving, and then continuing paving and performing vibration compaction until the layer is level with the road surface; after the pavement is leveled, release paper is paved on the construction surface, and then a small-sized road roller is used for compacting, thus completing construction. After 1 hour of maintenance, the surface release paper is removed to allow the product to pass. And the heavy-duty truck with the weight of more than 50 tons is forbidden to pass in 4 hours, and the truck is completely opened after 6 hours.
Comparative example 1 (regenerated resin D)
This comparative example differs from example 1 in that it replaces resin a with regenerated resin D, the other conditions being unchanged.
Comparative example 2 (flame retardant not ground with resin)
The comparative example was prepared in the same ratio as in example 1, except that the flame retardant was dispersed with the aggregate and was not ground with the resin a in the preparation of the fast-setting material.
COMPARATIVE EXAMPLE 3 (without oxygen)
The proportion of the comparative example is the same as that of the example 1, except that oxygen is not added for inhibiting polymerization when the comparative example is packaged.
COMPARATIVE EXAMPLE 4 (without reinforcing fiber)
This comparative example differs from example 1 in that it does not have regenerated reinforcing fibers, and its amount is replaced with 40 mesh limestone powder, and the other conditions are unchanged. The mixture ratio is as follows:
a graded aggregate 500 comprising:
a color matching filler 150 comprising:
initiator 2.0, which includes:
COMPARATIVE EXAMPLE 5 (outsourcing resin)
This comparative example is different from example 1 in that this comparative example employs an outsourced unsaturated resin 7982 (Jiangsu Yabang coatings Co., Ltd.) in place of resin A, and the other conditions are not changed.
Test example 1
1. Test of road rapid solidification material storage time
The pre-construction storage time and post-construction curing initial setting time of the epoxy mortar prepared in examples 1 to 5 and comparative examples 1 to 5 were tested by referring to "method for testing pot life and curing time of epoxy mortar" in DL/T5193-2004 technical Specification for epoxy mortar ". When the storage time before construction is tested, the road quick-repair binding material and the package thereof are placed in a constant-temperature constant-humidity chamber with the temperature of 25 +/-2 ℃ and the humidity of 65, the polymerization stability (the instability is determined by the occurrence of hard blocks and polymerization) of the binding material is observed, and the time is recorded in unit hours; the solidification initial setting time after construction is that the solidification material is unpacked and packed, and is paved on site and then compacted, and the initial setting is tested once every 5 minutes by a test needle in an upper Vicat instrument (a cement consistency setting time tester) until the solidification initial setting time can not be stabbed, namely the solidification initial setting time in unit of min. The properties are shown in Table 2:
TABLE 2 holding time and initial setting time of the solidification materials
In example 3, when the proportion of the resin is reduced to a certain degree, the resin can only wrap the surface of the grading material, the gap between the grading base materials is large, the gap is filled with air, oxygen in the air is enough to block polymerization at normal temperature, and when construction and pressing are carried out, the pressure must be increased to remove the air or the temperature must be increased when the pressing is carried out. When repairing the water-stable layer, medium-temperature asphalt or low-temperature asphalt is generally pressed on the surface, and the temperature of the asphalt material is higher than 100 ℃ and is enough to be solidified. And when other embodiments are implemented, the heating is not carried out, the dosage of the resin is required to be increased, and the resin is convenient to fill the gaps among the grading materials and drive away the oxygen for curing during the pressing.
The medium temperature curing system of example 3 was not tested because it was cured by heat during construction of medium temperature asphalt or low temperature asphalt pavement.
2. Compression strength test
The samples of examples 1-5 and comparative examples 1-5 were subjected to the cubic compressive strength test of JGJ70-2009, basic performance test method for building mortar, and the above-mentioned consolidated materials were consolidated in a 70.7mm mold according to the construction requirements, and tested for unconfined compressive strength for 1 hour, 4 hours, 24 hours, and 28 days. And (3) testing equipment: the test was carried out using a 100T high performance tester manufactured by INSTRON-Division of ITW Ltd, UK, and the test results are shown in Table 3.
TABLE 3 compressive Strength test
3. Flame retardant property test of road quick-repair consolidation material
The road quick repair solidification materials prepared in example 1 and comparative example 2 were sampled according to GB T5471-. The measurement instrument adopts HC-2 oxygen index measuring instrument produced by Jiangning district analytical instrument factory in Nanjing to measure, and the measurement result is shown in Table 4.
TABLE 4 limiting oxygen index test
| Source of test sample | Example 1 | Comparative example 2 |
| Limiting oxygen index | 31 | 29 |
4. Linear expansion coefficient of road quick-repairing cementing material
The road quick-repair binders prepared in example 1 and comparative example 5 were used to determine the linear expansion coefficients thereof according to the method for determining the linear expansion coefficient of 5.15 epoxy mortar in DL/T5193-2004 technical Specification for epoxy resin mortar, and the results of the tests are shown in Table 5.
TABLE 5 Linear expansion coefficient of road quick-repair binder
| Sample source | Example 1 | Comparative example 5 |
| Coefficient of linear expansion (10) -6 /℃) | 17.9 | 45.8 |
The above-mentioned embodiments are intended to illustrate the technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, additions, equivalents, etc. made within the scope of the principles of the present invention should be included in the scope of the present invention.
Claims (6)
1. The road quick-repair consolidation material prepared by utilizing the recycled material is characterized by comprising the following raw materials in parts by weight:
500 parts of graded aggregate;
0-200 parts of color matching filler;
0-200 parts of green stone;
0-300 parts of limestone powder;
20-400 parts of regenerated reinforcing fiber;
60-250 parts of environment-friendly regenerated resin;
0-15 parts of a plasticizer;
0-30 parts of a flame retardant;
0.5-5 parts of an initiator;
0.5-3 parts of an accelerator;
0-2 parts of a lubricant;
0.5-5 parts of high-purity oxygen;
the regenerated reinforced fiber is prepared by tearing, crushing and screening waste or redundant materials of the glass fiber reinforced plastic composite material; the size of the regenerated reinforced fiber is 80-8 meshes;
the environment-friendly regenerated resin is obtained by diluting unsaturated polyester resin with an active diluent; the viscosity of the environment-friendly regenerated resin is 1800-12000mPa.s, and the acid value is 18-36 mgKOH/g; the unsaturated polyester resin is formed by carrying out alcoholysis on PET waste and then carrying out polycondensation with maleic anhydride; the environment-friendly regenerated resin comprises the following raw materials in parts by weight:
190 and 200 parts of PET waste;
95-100 parts of maleic anhydride;
40-45 parts of propylene glycol;
55-60 parts of diethylene glycol;
200 parts of a reactive diluent;
0.5-1.5 parts of catalyst stannous octoate;
catalyst 1,5, 7-triazabicyclo [4.4.0] deca-5-ene 0.1-0.5 weight portions;
0.1-0.5 part of antioxidant triphenyl phosphite;
0.1-0.5 part of polymerization inhibitor hydroquinone;
the active diluent is one or more of methoxypolyethylene glycol (350) mono (methyl) acrylate, methoxypolyethylene glycol (550) mono (methyl) acrylate, 2-phenoxyethyl acrylate, phenoxytriethoxy acrylate, tetrahydrofurfuryl (methyl) acrylate, N-vinyl pyrrolidone, hydroxyethyl methacrylate, isobornyl methacrylate and diallyl phthalate.
2. The road quick-repair solidification material prepared by using the recycled material as claimed in claim 1, wherein the graded aggregate comprises the following components in parts by weight:
12.5-50 parts of 800-sand 325-mesh quartz sand;
30-40 parts of 80-140-mesh quartz sand;
15-20 parts of 40-60-mesh quartz sand;
20-30 parts of 8-20-mesh quartz sand.
3. The road quick-repair consolidation material prepared by using the recycled material as claimed in claim 1, wherein the color-matching filler is one or more of basalt powder, limestone powder, iron ore powder and carbon black; the grain diameter of the color matching filler is 800 meshes to 20 meshes.
4. A method for preparing a road quick-repair binder as claimed in any one of claims 1 to 3, comprising the steps of:
(1) weighing the environment-friendly regenerated resin according to the formula amount, stirring and dispersing the flame retardant and the accelerator into the environment-friendly regenerated resin, and grinding and dispersing; then adding an initiator, and uniformly dispersing;
(2) adding the graded aggregate, the color matching filler, the Qingshi particles, the Qingshi powder, the regenerated fiber and the lubricant into a mixing and stirring kettle, uniformly stirring, adding the mixture obtained in the step (1), and stirring until the color is uniform to obtain a rapid solidification material;
(3) packaging the rapid consolidation materials in batches in polyolefin sealing bags, exhausting air, and injecting high-purity oxygen until the sealing bags swell; and fully and uniformly mixing oxygen and the material by shaking the sealing bag to obtain the road quick-repair consolidation material.
5. A construction method for road pavement wound repair using the road quick-repair binder as set forth in any one of claims 1 to 3, comprising the steps of:
（
) Drying the construction interface by using high-pressure air, and flatly paving the rapid road repair consolidation material on a construction site, wherein the thickness of each pavement is not more than 10-20 cm; after the pavement is paved, vibrating and compacting, paving a next layer, and repeating for multiple times until the pavement is leveled;
（
) Paving release paper on the construction surface leveled with the road surface, and compacting by using a road roller to finish construction; after maintenance for 1-6h, can be passed after removing the release paper.
6. A construction method for repairing cracks on a road pavement using the rapid-repair road binder as claimed in any one of claims 1 to 3, comprising: and determining the distribution condition of the cracks on the road surface by adopting crack detection equipment, designing and punching holes according to the distribution condition of the cracks on the road surface, pouring the road quick-repair consolidation material from the bottoms of the cracks, and enabling the vehicle to go on after consolidation.
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