CN112210344B - Emulsified asphalt cold regeneration layer interface bonding material, preparation method and application thereof - Google Patents
Emulsified asphalt cold regeneration layer interface bonding material, preparation method and application thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J195/00—Adhesives based on bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/185—Isolating, separating or connecting intermediate layers, e.g. adhesive layers; Transmission of shearing force in horizontal intermediate planes, e.g. by protrusions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/329—Phosphorus containing acids
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- 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
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Abstract
The invention relates to an emulsified asphalt cold regeneration layer interface bonding material, which comprises a component A, a component B, a component C, a component D and a component E, wherein the component A comprises the following raw materials: the component A is water-based epoxy resin; the component B is a polyamide epoxy curing agent; the component C is formed by mixing a stabilizer and water; the component D is formed by mixing solid SBS, dimethylbenzene, a composite emulsifier, a defoaming agent and water; the component E is formed by mixing asphalt, a median crack emulsifier, phosphoric acid and water; the components are respectively as follows according to the mass portion ratio: 3-25 parts of component A, 3-25 parts of component B, 3-15 parts of component C, 5-10 parts of component D and 40-90 parts of component E; the interface bonding performance between the emulsified asphalt cold regeneration layer and the upper layer is improved, the water damage resistance and the durability of the pavement are improved, and the product is non-toxic, high in stability, high in bonding strength, high in shear strength, good in waterproof performance and good in durability.
Description
Technical Field
The invention belongs to the technical field of chemical building materials, and particularly relates to an emulsified asphalt cold regeneration layer interface bonding material, a preparation method and application thereof.
Background
In the road built in China, the asphalt pavement accounts for more than 80 percent and enters the large and medium repair periods, and a large amount of dug and milled asphalt mixture is abandoned, so that the environment is polluted and resources are wasted.
The cold regeneration technology of the emulsified asphalt on the asphalt pavement is a resource recycling mode of milling, crushing and screening the waste asphalt pavement, adding the emulsified asphalt and paving the waste asphalt pavement on the pavement again.
Cold regeneration technology of emulsified asphalt belongs to cold-mix cold-paving technology, compare hot-mix asphalt mixture, cold regeneration mixture lacks the process condition of heating activation because of original pitch, the surfactant in the emulsified asphalt only has weak activation to ageing pitch, it is relatively poor to add old and useless asphalt mixture as the intensity of aggregate itself, it is extremely easy to cause the breakage of aggregate to roll at construction or later stage service process vehicle, infiltration water gets into the back freeze thawing and destroys, cause regeneration layer performance decay, so emulsified asphalt cold regeneration water damage resistance performance is waited to further improve urgently.
The cold regeneration layer of emulsified asphalt is usually used as a base layer or a lower layer, conventional emulsified asphalt or modified emulsified asphalt can be sprayed on the regeneration layer for bonding and waterproofing, the softening point of residues of common emulsified asphalt or modified emulsified asphalt is usually 40-60 ℃, the temperature of a hot asphalt mixture on the upper layer is usually about 150 ℃, and the hot asphalt mixture is repeatedly rubbed and pressed by a road roller, so that the waterproof layer is easily broken, the interface bonding and water drainage effect is reduced, water seeps downwards into the regeneration layer in the later use process, the performance of the regeneration layer and other layers is influenced by freeze-thaw damage, and the service life of a road is influenced.
Disclosure of Invention
Based on the above-mentioned disadvantages and shortcomings of the prior art, it is an object of the present invention to at least solve one or more of the above-mentioned problems of the prior art, in other words, to provide an interface bonding material for cold recycled layer of emulsified asphalt that satisfies one or more of the above-mentioned needs.
The invention also aims to provide a preparation method of the interface bonding material of the cold recycled layer of the emulsified asphalt.
The invention also aims to provide an application scheme of the interface bonding material of the cold recycling layer of the emulsified asphalt.
In order to achieve the purpose, the invention adopts the following technical scheme:
An interface bonding material of an emulsified asphalt cold regeneration layer is prepared from a preparation raw material containing a component A, a component B, a component C, a component D and a component E, wherein:
the component A is water-based epoxy resin;
the component B is a polyamide epoxy curing agent;
the component C is formed by mixing a stabilizer and water;
the component D is formed by mixing solid SBS, dimethylbenzene, a composite emulsifier, a defoaming agent and water;
the component E is formed by mixing asphalt, a median crack emulsifier, phosphoric acid and water;
the components are respectively as follows according to the mass portion ratio: 3-25 parts of component A, 3-25 parts of component B, 3-15 parts of component C, 5-10 parts of component D and 40-90 parts of component E.
As a preferred scheme, the component C comprises the following components in parts by mass: 0.3 to 1.5 portions of stabilizer and 2.7 to 13.5 portions of water.
As a preferred scheme, the component D comprises the following components in parts by mass: 2 to 4 portions of solid SBS, 0.175 to 0.35 portion of dimethylbenzene, 0.165 to 0.33 portion of composite emulsifier, 0.02 to 0.06 portion of defoamer and 2.64 to 5.26 portions of water.
As a preferred scheme, the component E comprises the following components in parts by mass: 16-63 parts of asphalt, 0.4-0.8 part of middle-split emulsifier, 0.5-1.5 parts of phosphoric acid and 12-54 parts of water.
Preferably, the composite emulsifier is two or more of dibenzyl biphenyl polyoxyethylene ether, alkylphenol polyoxyethylene ether sulfosuccinate, polyoxyethylene sorbitan stearic acid, fatty alcohol polyoxyethylene ether and alkylphenol polyoxyethylene.
Preferably, the defoaming agent is one or more of diethyl ethanol, isobutanol, isoamyl alcohol, tributyl phosphate and an organic silicon defoaming agent.
Preferably, the middle-split emulsifier is one or more of quaternary ammonium salt type emulsifier and N-alkyl propylene diamine.
Preferably, the stabilizer is polyvinyl alcohol, and the asphalt is No. 90 petroleum asphalt.
The invention also provides a preparation method of the interface bonding material of the emulsified asphalt cold regeneration layer, which comprises the following steps:
s1, preparing a component C: adding a stabilizer into water, soaking for 30 minutes, heating to 80 ℃ through a water bath, and cooling to room temperature for later use;
s2, preparing a component D: preparing solid SBS into powder, and dissolving the powder into dimethylbenzene to form liquid SBS; adding the composite emulsifier into water, heating to 50-60 ℃, adding the composite emulsifier into liquid SBS, and adding the defoaming agent to prepare SBS latex for later use;
s3, preparing a component E: adding a medium-splitting emulsifier into water to form an aqueous solution, adding phosphoric acid until the pH of the aqueous solution is 2.5, stirring and heating to 60 ℃; heating asphalt to 135 ℃, mixing the asphalt with the aqueous solution, and cooling the asphalt to room temperature for later use;
s4, mixing: uniformly premixing the component A, the component C, the component D and the component E to prepare an emulsified asphalt base stock; and adding the component B into the base material, and stirring until the component B is uniformly mixed to obtain the emulsified asphalt cold regeneration layer interface bonding material.
The invention also provides an application of the emulsified asphalt cold-recycling layer interface adhesive material according to any scheme or the emulsified asphalt cold-recycling layer interface adhesive material prepared by the preparation method according to the scheme, and the application is applied to interface adhesion between an emulsified asphalt cold-recycling layer and an upper layer.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts waterborne epoxy resin and SBS latex composite modified emulsified asphalt to solidify and form a stable three-dimensional net-shaped three-dimensional structure, is insensitive to temperature change, only sticks and does not flow at high temperature, has no migration, and ensures the stability of a waterproof layer in a high-temperature state, namely the construction of upper asphalt concrete; the waterproof adhesive layer is tough but not brittle at low temperature in winter, so that the waterproof adhesive layer is not cracked, and the waterproof effect is continuous and effective.
2. Compared with emulsified asphalt and even SBS modified emulsified asphalt, the interface cohesiveness and self cohesiveness of the emulsified asphalt composite modified by the waterborne epoxy resin and SBS latex are approximately 3 times higher, and the emulsified asphalt composite modified emulsified asphalt is used as an interface adhesive material between an emulsified asphalt cold regeneration layer and an upper layer, so that the adhesive strength and shearing strength between the asphalt layer and the cold regeneration layer can be improved, interlayer shearing damage caused by driving is reduced, and the water damage resistance of the cold regeneration layer and the durability of a pavement are improved.
3. The interface bonding material for the cold regeneration layer of the emulsified asphalt prepared by the invention greatly reduces the hidden troubles of diseases or durability and the like possibly caused by the poor water loss resistance of the cold regeneration layer of the emulsified asphalt, prolongs the service life of the pavement and improves the application value of the cold regeneration of the emulsified asphalt.
4. The interface bonding material of the emulsified asphalt cold regeneration layer prepared by the invention can effectively permeate into the emulsified asphalt cold regeneration layer, and forms a complete high-strength waterproof layer with the emulsified asphalt cold regeneration layer after being cured, so that the damage of dynamic water pressure to a pavement structure is effectively resisted, the water damage resistance of the cold regeneration layer is improved, the bonding property is excellent, the upper asphalt layer and the cold regeneration layer are bonded into a whole, the stress generated by pavement load can be effectively and uniformly transmitted, and the interlaminar shear damage caused by driving is reduced.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will be given by way of specific embodiments. It is obvious that the following description is only of some embodiments of the invention, and that other embodiments may be obtained by those skilled in the art without inventive step.
Example 1:
the preparation method of the interface bonding material of the emulsified asphalt cold-recycling layer in the embodiment specifically comprises the following steps:
S1, preparation of a component C: 1 part of polyvinyl alcohol particles are added to 9 parts of water, and the mixture is soaked for 30 minutes, and the soaking time is properly prolonged according to the dissolution condition of polyvinyl alcohol. Then heating to 80 ℃ by using a water bath, stopping heating, and cooling to room temperature for later use;
s2, preparation of a component D: 2 parts of solid SBS is crushed into powder with the diameter of less than 0.075 mm, and the powder is dissolved into dimethylbenzene at normal temperature until the powder is transparent and is used as precursor liquid SBS for standby; then adding 0.082 part of dibenzyl diphenyl polyoxyethylene ether and 0.083 part of fatty alcohol-polyoxyethylene ether into 2.64 parts of water to prepare a composite emulsifier solution, and heating to 50-60 ℃; adding the composite emulsifier solution into liquid SBS, shearing and emulsifying for 15 minutes at 7800-12000 r/min, then distilling under reduced pressure to recover xylene, adding 0.02 part of diethyl ethanol as an antifoaming agent, controlling the quantity of bubbles to ensure that the distillation is normally carried out, and finally controlling the residual amount of the toluene to be lower than 3.5 percent of the mass percent of the prepared SBS latex so as to prepare SBS latex with the solid content of 40-42 percent for later use;
s3, preparation of E component: adding 0.6 part of quaternary ammonium salt emulsifier serving as a mid-splitting emulsifier into 39.4 parts of water to form an aqueous solution, gradually adding phosphoric acid until the pH value of the aqueous solution is 2.5, heating to 60 ℃ while stirring, simultaneously heating 60 parts of No. 90 petroleum asphalt to 135 ℃, circulating, shearing and dispersing the petroleum asphalt and the mid-splitting emulsifier aqueous solution in asphalt emulsifying equipment to form uniform tan liquid, and cooling at room temperature to obtain a component E;
S4, preparing an interface bonding material between the emulsified asphalt cold regeneration layer and the layer arranged on the emulsified asphalt cold regeneration layer: and (2) uniformly premixing 20 parts of waterborne epoxy resin, 5 parts of component C, 5 parts of component D and 50 parts of component E to prepare a composite modified emulsified asphalt base material, adding 20 parts of polyamide epoxy curing agent into the base material after the construction of the emulsified asphalt cold regeneration layer is finished, and then strongly stirring until the mixture is uniformly mixed to prepare the interface bonding material between the emulsified asphalt cold regeneration layer and the upper layer.
Example 2:
the preparation method of the interface bonding material of the emulsified asphalt cold-recycling layer in the embodiment specifically comprises the following steps:
s1, preparation of a component C: 0.7 part of polyvinyl alcohol particles was added to 9.3 parts of water, and the mixture was immersed for 30 minutes, and the immersion time was appropriately prolonged depending on the dissolution of polyvinyl alcohol. Then heating to 80 ℃ by using a water bath, stopping heating, and cooling to room temperature for later use;
s2, preparation of a component D: 2 parts of solid SBS is crushed into powder with the diameter of less than 0.075 mm, and the powder is dissolved into dimethylbenzene at normal temperature until the powder is transparent and is used as precursor liquid SBS for standby; then 0.082 part of alkylphenol polyoxyethylene ether sulfosuccinate and 0.083 part of alkylphenol polyoxyethylene are added into 2.64 parts of water to prepare a composite emulsifier solution, and the mixture is heated to 50-60 ℃; adding the composite emulsifier solution into liquid SBS, shearing and emulsifying for 15 minutes at 7800-12000 r/min, distilling under reduced pressure to recover xylene, adding 0.02 part of organic silicon defoamer to prepare SBS latex, controlling the quantity of bubbles to ensure that the distillation is normally carried out, and finally controlling the residual xylene content to be lower than 3.5 percent of the mass percent of the prepared SBS latex so as to prepare SBS latex with the solid content of 40-42 percent for later use;
S3, preparation of E component: adding 0.5 part of a medium cracking emulsifier into 45.5 parts of water to form an aqueous solution, gradually adding phosphoric acid until the pH value of the aqueous solution is 2.5, heating to 60 ℃ while stirring, simultaneously heating 54 parts of No. 90 petroleum asphalt to 135 ℃, circulating, shearing and dispersing the petroleum asphalt and the aqueous solution of the medium cracking emulsifier in asphalt emulsifying equipment to form uniform tan liquid, and cooling at room temperature to obtain a component E;
s4, preparing an interface bonding material between the emulsified asphalt cold regeneration layer and the layer arranged on the emulsified asphalt cold regeneration layer: and after the construction of the cold regeneration layer of the emulsified asphalt is finished, 15 parts of polyamide epoxy curing agent is added into the base material, and then the mixture is stirred with strong force until the mixture is uniform, so that the interface bonding material between the cold regeneration layer of the emulsified asphalt and the upper layer can be prepared.
Example 3:
the preparation method of the interface bonding material of the emulsified asphalt cold-recycling layer in the embodiment specifically comprises the following steps:
s1, preparation of a component C: 0.5 part of polyvinyl alcohol particles was added to 9.5 parts of water, and the mixture was soaked for 30 minutes, and the soaking time was appropriately prolonged depending on the dissolution of polyvinyl alcohol. Then heating to 80 ℃ by using a water bath, stopping heating, and cooling to room temperature for later use;
S2, preparation of a component D: 2 parts of solid SBS is crushed into powder with the diameter of less than 0.075 mm, and the powder is dissolved into dimethylbenzene at normal temperature until the powder is transparent and is used as precursor liquid SBS for standby; then 0.055 part of alkylphenol polyoxyethylene ether sulfosuccinate, 0.055 part of dibenzyl biphenyl polyoxyethylene ether and 0.055 part of alkylphenol polyoxyethylene are added into 2.64 parts of water to prepare a composite emulsifier solution, and the solution is heated to 50-60 ℃; adding the composite emulsifier solution into liquid SBS, shearing and emulsifying for 15 minutes at 7800-12000 r/min, distilling under reduced pressure to recover xylene, adding 0.01 part of isobutanol and 0.01 part of isoamylol as defoaming agents to prepare SBS latex, controlling the quantity of bubbles to ensure that the distillation is normally carried out, and finally controlling the residual quantity of the xylene to be lower than 3.5 percent of the mass percent of the prepared SBS latex so as to prepare SBS latex with the solid content of 40-42 percent for later use;
s3, preparation of E component: adding 0.5 part of quaternary ammonium salt emulsifier serving as a mid-splitting emulsifier into 44.5 parts of water to form an aqueous solution, gradually adding phosphoric acid until the pH value of the aqueous solution is 2.5, heating to 60 ℃ while stirring, simultaneously heating 55 parts of No. 90 petroleum asphalt to 135 ℃, circulating, shearing and dispersing the petroleum asphalt and the mid-splitting emulsifier aqueous solution in asphalt emulsifying equipment to form uniform tan liquid, and cooling at room temperature to obtain a component E;
S4, preparing an interface bonding material between the emulsified asphalt cold regeneration layer and the layer arranged on the emulsified asphalt cold regeneration layer: and after the construction of the cold regeneration layer of the emulsified asphalt is finished, adding 10 parts of polyamide epoxy curing agent into the base material, and then strongly stirring until the mixture is uniformly mixed, thus preparing the interface bonding material between the cold regeneration layer of the emulsified asphalt and the upper layer.
Example 4:
the preparation method of the interface bonding material of the emulsified asphalt cold recycling layer in the embodiment specifically comprises the following steps:
s1, preparation of a component C: 0.5 part of polyvinyl alcohol particles was added to 9.5 parts of water, and the mixture was soaked for 30 minutes, and the soaking time was appropriately prolonged depending on the dissolution of polyvinyl alcohol. Then heating to 80 ℃ by using a water bath, stopping heating, and cooling to room temperature for later use;
s2, preparation of a component D: 4 parts of solid SBS is crushed into powder with the diameter of less than 0.075 mm, and the powder is dissolved into dimethylbenzene at normal temperature until the powder is transparent and is used as precursor liquid SBS for standby; then 0.164 part of polyoxyethylene sorbitan stearic acid and 0.164 part of dibenzylbiphenyl polyoxyethylene ether are added into 5.26 parts of water to prepare a composite emulsifier solution, and the composite emulsifier solution is heated to 50-60 ℃; adding the composite emulsifier solution into liquid SBS, shearing and emulsifying for 15 minutes at 7800-12000 r/min, then distilling under reduced pressure to recover xylene, adding 0.04 part of tributyl phosphate as an antifoaming agent to prepare SBS latex, controlling the quantity of bubbles to ensure that the distillation is normally carried out, and finally controlling the residual quantity of xylene to be lower than 3.5 percent of the mass percent of the prepared SBS latex so as to prepare SBS latex with the solid content of 40-42 percent for later use;
S3, preparation of E component: adding 0.5 part of N-alkyl propylene diamine serving as a middle-split emulsifier into 49.5 parts of water to form an aqueous solution, gradually adding phosphoric acid until the pH value of the aqueous solution is 2.5, heating to 60 ℃ while stirring, simultaneously heating 50 parts of No. 90 petroleum asphalt to 135 ℃, circulating, shearing and dispersing the petroleum asphalt and the aqueous solution of the middle-split emulsifier in asphalt emulsifying equipment to form uniform tan liquid, and cooling at room temperature to obtain a component E;
s4, preparing an interface bonding material between the emulsified asphalt cold regeneration layer and the layer arranged on the emulsified asphalt cold regeneration layer: 5 parts of water-based epoxy resin, 10 parts of component C, 5 parts of component D and 75 parts of component E are premixed uniformly to prepare a composite modified emulsified asphalt base material, after the construction of the emulsified asphalt cold regeneration layer is finished, 5 parts of polyamide epoxy curing agent is added into the base material, and then the mixture is stirred strongly until the mixture is uniform, so that the interface adhesive material between the emulsified asphalt cold regeneration layer and the upper layer can be prepared.
The results of testing the emulsified asphalt cold recycled layer interface adhesive materials prepared in examples 1-4 are shown in the following table:
from the above table, the interface bonding material of the emulsified asphalt cold recycling layer of the present invention has the following advantages compared with the traditional SBS modified emulsified asphalt interface bonding material: the coating at 180 ℃ does not flow or slide, so that the upper modified asphalt mixture can not damage the waterproof bonding interface layer when the paving and rolling temperatures of the upper modified asphalt mixture are 150 ℃ and 160 ℃; the coating at 15 ℃ below zero has no fracture and crack, and can effectively reduce the shearing damage between layers caused by low pavement temperature and vehicle running in winter; the bonding strength is about 3 times of that of the traditional material, the bonding effect between layers is ensured, and the durability of the cold recycling engineering of the emulsified asphalt is improved.
The interface bonding material of the emulsified asphalt cold regeneration layer can effectively permeate into the emulsified asphalt cold regeneration layer, and a complete high-strength waterproof layer is formed with the emulsified asphalt cold regeneration layer after solidification, so that the damage of dynamic water pressure to a pavement structure is effectively resisted, and the water damage resistance of the cold regeneration layer is improved. After the emulsified asphalt modified by the waterborne epoxy resin and the SBS latex in a composite mode is cured, the bonding performance is excellent, the upper asphalt layer and the cold regeneration layer are bonded into a whole, the stress generated by road surface load can be effectively and uniformly transmitted, and the interlayer shear failure caused by driving is reduced.
The waterborne epoxy resin and SBS latex compound modified emulsified asphalt is solidified to form a stable three-dimensional network three-dimensional structure, is insensitive to temperature change, only sticks and does not flow at high temperature, has no migration, and ensures the stability of a waterproof layer in a high-temperature state, namely the construction of the upper asphalt concrete layer; the waterproof adhesive layer is tough but not brittle at low temperature in winter, so that the waterproof adhesive layer is not cracked, and the waterproof effect is continuous and effective.
The characteristics of high binding power and high cohesive force of the emulsified asphalt cold regeneration layer can be fully exerted through the interfacial binding layer between the emulsified asphalt cold regeneration layer and the asphalt mixture layer which are compositely modified by the aqueous epoxy resin and the SBS latex, the hidden dangers of diseases or durability and the like possibly caused by poor water loss resistance of the emulsified asphalt cold regeneration layer are greatly reduced, the service life of the pavement is prolonged, the popularization and application of the waste asphalt pavement resource recycling technology are promoted, the application added value is improved, the application value is certain, the emulsified asphalt cold regeneration layer and the SBS latex composite modified emulsified asphalt composite material layer play a great role in the field of traffic construction, and the market prospect is wide.
In the above embodiment and its alternatives, the component A can be optionally selected from 3 to 25 parts, and the component B can be optionally selected from 3 to 25 parts; the component C can be selected randomly from 3 to 15 parts; the component D can be optionally selected from 5 to 10 parts; the E component can be arbitrarily selected from 40-90 parts.
In the above examples and alternatives, the stabilizer is 0.3-1.5 parts, and the water is 2.7-13.5 parts in the component C; the components can be selected randomly within the mass portion interval corresponding to each component.
In the above embodiment and its alternative, in the component D, the solid SBS is 2-4 parts, the xylene is 0.175-0.35 part, the composite emulsifier is 0.165-0.33 part, the defoamer is 0.02-0.06 part, the water is 2.64-5.26 parts; the components can be selected randomly within the mass portion interval corresponding to each component.
In the above embodiment and its alternative, in the component E, 16-63 parts of asphalt, 0.4-0.8 part of middle-split emulsifier, 0.5-1.5 parts of phosphoric acid and 12-54 parts of water; the components can be selected randomly within the mass portion interval of the components.
In the above embodiments and their alternatives, the composite emulsifier may also be any two or more selected from dibenzylbiphenyl polyoxyethylene ether, alkylphenol polyoxyethylene ether sulfosuccinate, polyoxyethylene sorbitan stearic acid, fatty alcohol polyoxyethylene ether, and alkylphenol polyoxyethylene.
In the above embodiments and their alternatives, the defoaming agent can also be selected from any one or more of diethyl ethanol, isobutanol, isoamyl alcohol, tributyl phosphate and silicone defoaming agent.
The foregoing has outlined rather broadly the preferred embodiments and principles of the present invention and it will be appreciated that those skilled in the art may devise variations of the present invention that are within the spirit and scope of the appended claims.
Claims (9)
1. The interface bonding material of the cold regeneration layer of the emulsified asphalt is characterized in that a preparation raw material comprises a component A, a component B, a component C, a component D and a component E, wherein:
the component A is water-based epoxy resin;
the component B is a polyamide epoxy curing agent;
the component C is formed by mixing a stabilizer and water;
the component D is formed by mixing solid SBS, dimethylbenzene, a composite emulsifier, a defoaming agent and water;
the component E is formed by mixing asphalt, a median crack emulsifier, phosphoric acid and water;
the components are respectively as follows according to the mass portion ratio:
the component A is 3-25 parts,
The component B is 3-25 parts,
The component C is 3-15 parts,
The component D is 5-10 parts,
The component E is 40-90 parts.
2. The interface bonding material for the cold regeneration layer of the emulsified asphalt as claimed in claim 1, wherein the component C comprises the following components in parts by mass: 0.3 to 1.5 portions of stabilizer and 2.7 to 13.5 portions of water.
3. The interface bonding material for the cold regeneration layer of the emulsified asphalt as claimed in claim 1, wherein the component D comprises the following components in parts by mass: 2 to 4 portions of solid SBS, 0.175 to 0.35 portion of dimethylbenzene, 0.165 to 0.33 portion of composite emulsifier, 0.02 to 0.06 portion of defoamer and 2.64 to 5.26 portions of water.
4. The interfacial bonding material for cold recycled layer of emulsified asphalt as claimed in claim 1, wherein said composite emulsifier is two or more selected from dibenzyl biphenyl polyoxyethylene ether, alkylphenol polyoxyethylene ether sulfosuccinate, polyoxyethylene sorbitan stearic acid, fatty alcohol polyoxyethylene ether and alkylphenol polyoxyethylene.
5. The interface bonding material for the cold regeneration layer of the emulsified asphalt as claimed in claim 1, wherein the defoaming agent is one or more of diethyl ethanol, isobutyl alcohol, isoamyl alcohol, tributyl phosphate and silicone defoaming agent.
6. The interface bonding material for cold recycling layer of emulsified asphalt as claimed in claim 1, wherein the mid-crack emulsifier is one or more of quaternary ammonium salt type emulsifier and N-alkyl propylene diamine.
7. The interfacial bonding material for cold recycled layer of emulsified asphalt as claimed in claim 1, wherein said stabilizer is polyvinyl alcohol.
8. The method for preparing the interface bonding material of the emulsified asphalt cold recycled layer as claimed in any one of claims 1 to 7, comprising the steps of:
s1, preparing a component C: adding a stabilizer into water, soaking for 30 minutes, heating to 80 ℃ through a water bath, and cooling to room temperature for later use;
s2, preparing a component D: preparing solid SBS into powder, and dissolving the powder into dimethylbenzene to form liquid SBS; adding the composite emulsifier into water, heating to 50-60 ℃, adding the composite emulsifier into liquid SBS, and adding the defoamer to prepare SBS latex for later use;
s3, preparing a component E: adding a medium-splitting emulsifier into water to form an aqueous solution, adding phosphoric acid until the pH of the aqueous solution is 2.5, stirring and heating to 60 ℃; heating asphalt to 135 ℃, mixing the asphalt with the aqueous solution, and cooling the asphalt to room temperature for later use;
s4, mixing: uniformly premixing the component A, the component C, the component D and the component E to prepare an emulsified asphalt base stock; and adding the component B into the base material, and stirring until the mixture is uniformly mixed to obtain the emulsified asphalt cold recycled layer interface bonding material.
9. Use of the interface bonding material for cold-recycled layer of emulsified asphalt according to any one of claims 1 to 7 or the interface bonding material for cold-recycled layer of emulsified asphalt prepared by the preparation method according to claim 8, wherein the interface bonding material is used for the interface bonding between the cold-recycled layer of emulsified asphalt and the upper layer.
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| CN113881371A (en) * | 2021-09-22 | 2022-01-04 | 无锡绿环交通科技有限公司 | Single-component second-order reaction water-based epoxy asphalt waterproof adhesive |
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