CN106638211A - Colored pavement structure and paving method therefor - Google Patents

Abstract

The invention discloses a colored pavement structure and a laying method thereof, belonging to the field of road construction. The colored pavement structure includes: a constrained base layer laid on the pavement substrate, a concrete surface layer laid on the constrained base layer; the constrained base layer includes a cementitious material layer and a colored aggregate layer coated on the cemented material layer; in the cemented material layer The bonding material includes the following components in parts by weight: 65-75 parts of polymethyl methacrylate, 20-30 parts of reactive diluent, 3-8 parts of toughening agent, 4-6 parts of curing agent, 1 part of toughness curing agent ‑4 parts, accelerator 1‑4 parts, toner 0.5‑2 parts. The colored pavement structure has the characteristics of not easy to crack, color aggregates are not easy to fall off, good durability, long service life, suitable for urban landscape roads, etc.

Description

A kind of colored pavement structure and laying method thereof

technical field

The invention relates to the field of road construction, in particular to a colored pavement structure and a laying method thereof.

Background technique

The pavement of traditional urban roads is either black (asphalt) or white (cement), the color is single, and the effect of dividing traffic sections is poor. It cannot make the vision quickly identify bus lanes, sidewalks, etc., so it cannot effectively reduce the incidence of traffic accidents. . Moreover, the pavement with a single color cannot be coordinated with the environment of the city, which destroys the urban landscape. With the explosive growth of traffic volume and people's demand for urban construction landscape, the laying of colored pavement has become a trend. Colored pavement can not only clearly divide the traffic section, but also coordinate with the surrounding environment. Moreover, the colored pavement can only be formed by laying a corresponding colored pavement structure, so it is very necessary to provide a colored pavement structure.

The prior art provides a colored pavement structure, which mainly includes cementing materials and colored ceramic aggregates, wherein the cementing materials mainly include: epoxy resin base material, curing agent, diluent, accelerator and colored filler. The laying process of the colored pavement structure is as follows: clean the surface of the pavement substrate, then apply a layer of cementing material, and immediately spread a layer of high-density colored ceramic aggregate evenly on the surface of the cementing material, and wait for cementation After the material is solidified, the unbonded colored ceramic aggregate on the surface of the cementitious material is removed to obtain a colored anti-skid road surface with a rough surface.

The inventor finds that the prior art has at least the following problems:

The colored ceramic aggregate on the colored pavement structure provided by the prior art is easy to fall off, and the fallen colored ceramic aggregate is likely to cause safety hazards to pedestrians, and the colored pavement structure is easy to crack and has poor durability, so it is only suitable for deceleration roads. Not suitable for urban landscape roads.

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a colored pavement structure that is not easy to fall off, the colored pavement structure is not easy to crack, has good durability, and is suitable for urban landscape roads and its laying method. The specific technical scheme is as follows:

In a first aspect, an embodiment of the present invention provides a colored pavement structure, the colored pavement structure comprising: a constrained base layer laid on the pavement base, a concrete surface layer laid on the constrained base layer; the constrained base layer Including a cementing material layer and a color aggregate layer coated on the cementing material layer; the cementing material layer includes the following components in parts by weight: 65-75 parts of polymethyl methacrylate, 20-20 parts of reactive diluent 30 parts, 3-8 parts of toughening agent, 4-6 parts of curing agent, 1-4 parts of toughness curing agent, 1-4 parts of accelerator, 0.5-2 parts of toner.

Specifically, preferably, the concrete surface layer includes the following components in parts by weight: 8-12 parts of cementing material, 55-70 parts of colored aggregate with a particle size of 4-6mm, and colored aggregate with a particle size of 2-4mm. 16-25 parts of aggregate, 10-16 parts of colored aggregate with a particle size of 0.1-2 mm, and 6-9 parts of mineral powder with a particle size of 0.01-0.09 mm.

Specifically, as a preference, the cementing material layer is prepared by the following method:

Step a: According to the parts by weight of each component, polymethyl methacrylate, reactive diluent and toughening agent were mixed and stirred for 3-5 minutes to obtain a modified cementing solution.

Step b. Mix and stir the curing agent, toughness curing agent and accelerator for 3-5 minutes to obtain a curing cement solution.

Step c, mixing and stirring the modified cementing solution, the solidified cementing solution, and the toner for 3-5 minutes to obtain a cementing material, and coating the cementing material on the pavement substrate to form the cementing material layer .

Specifically, preferably, the reactive diluent is at least one of butyl glycidyl ether, phenyl glycidyl ether, and benzyl glycidyl ether.

Specifically, preferably, the toughening agent is polypropylene glycol diglycidyl ether and/or chlorinated polyethylene.

Specifically, preferably, the curing agent is at least one of m-xylylenediamine, diethylenetriamine, and diethylaminopropylamine.

Specifically, preferably, the tough curing agent is polyetheramine.

Specifically, preferably, the accelerator is nonylphenol and/or resorcinol.

In a second aspect, an embodiment of the present invention provides a method for laying the above-mentioned colored pavement structure, and the method for laying includes the following steps:

Step α, selecting the target pavement substrate, and performing shot blasting cleaning treatment on the pavement substrate.

Step β, then coating a layer of cementing material layer on the pavement substrate after the cleaning treatment, after the coating is completed, immediately sprinkle colored aggregates on the surface of the cementing material layer to form a colored aggregate layer, and then obtain a constraint The bottom layer; wherein, the coating amount of the cementing material layer is 1.25-1.45 kg/m ² , and the coating amount of the color aggregate layer is 1.60-1.95 kg/m ² .

Step δ: After the constrained bottom layer is cured, pour a concrete surface layer on the cured constrained bottom layer, and after the concrete surface layer is cured, obtain the colored pavement structure; wherein, the concrete surface layer The coating amount is 2.5-3.5kg/m ² .

Specifically, preferably, in step β, the particle size of the colored aggregate is 3-5 mm; the colored aggregate is selected from natural colored gravel and/or artificially made colored calcined ceramsite.

The beneficial effects brought by the technical solution provided by the embodiments of the present invention are:

The color pavement structure provided by the embodiments of the present invention, through the synergistic effect of polymethyl methacrylate, reactive diluent, toughening agent, curing agent, toughness curing agent, accelerator, and toner, makes the cementitious material have excellent Viscosity, flexibility, thermal shock resistance, stability, and suitable curing rate, so that the color aggregate layer coated on the cementing material layer is not easy to fall off and break, and the impact resistance and durability are good. At the same time, the toner Color is imparted to the cementitious material. By laying the above-mentioned constrained bottom layer on the pavement, it can effectively solve the falling off of the colored aggregate on the colored pavement and the fracture of the colored aggregate layer. At the same time, the colored aggregate layer on the constrained bottom layer provides a rough surface for the concrete surface, Improves the bond between the concrete surface and the constrained substratum. By laying the concrete layer on the constrained bottom layer, the colored pavement can have anti-skid and anti-abrasion properties, protect the constrained bottom layer, and make the constrained bottom layer, the concrete surface layer and the original road surface form a whole, and then make the concrete surface layer The load is effectively transmitted to the original road surface, which can effectively solve the problem that the concrete surface layer is broken due to heavy load, thereby prolonging the service life of the road surface paved with the colored pavement structure. It can be seen that the colored pavement structure provided by the embodiment of the present invention is not easy to crack, the colored aggregate is not easy to fall off, has good durability, long service life, and is suitable for urban landscape roads.

detailed description

In order to make the purpose, technical solution and advantages of the present invention clearer, the implementation manners of the present invention will be further described in detail below.

In the first aspect, the embodiment of the present invention provides a colored pavement structure, the colored pavement structure includes: a constrained base layer laid on the pavement base, and a concrete surface layer laid on the constrained base layer; wherein, the constrained base layer includes a cementitious material layer and a colored aggregate layer coated on the binder layer. Moreover, the cementing material layer includes the following components in parts by weight: 65-75 parts of polymethyl methacrylate, 20-30 parts of reactive diluent, 3-8 parts of toughening agent, 4-6 parts of curing agent, toughness curing 1-4 parts of agent, 1-4 parts of accelerator, 0.5-2 parts of toner.

The color pavement structure provided by the embodiments of the present invention, through the synergistic effect of polymethyl methacrylate, reactive diluent, toughening agent, curing agent, toughness curing agent, accelerator, and toner, makes the cementitious material have excellent Viscosity, flexibility, thermal shock resistance, stability, and suitable curing rate, so that the color aggregate layer coated on the cementing material layer is not easy to fall off and break, and the impact resistance and durability are good. At the same time, the toner Color is imparted to the cementitious material. By laying the above-mentioned constrained bottom layer on the pavement, it can effectively solve the falling off of the colored aggregate on the colored pavement and the fracture of the colored aggregate layer. At the same time, the colored aggregate layer on the constrained bottom layer provides a rough surface for the concrete surface, Improves the bond between the concrete surface and the constrained substratum. By laying the concrete layer on the constrained bottom layer, the colored pavement can have anti-skid and anti-abrasion properties, protect the constrained bottom layer, and make the constrained bottom layer, the concrete surface layer and the original road surface form a whole, and then make the concrete surface layer The load is effectively transmitted to the original road surface, which can effectively solve the problem that the concrete surface layer is broken due to heavy load, thereby prolonging the service life of the road surface paved with the colored pavement structure. It can be seen that the colored pavement structure provided by the embodiment of the present invention is not easy to crack, the colored aggregate is not easy to fall off, has good durability, long service life, and is suitable for urban landscape roads.

Specifically, in the embodiment of the present invention, the concrete surface layer includes the following components in parts by weight: 8-12 parts of cementitious materials, 55-70 parts of colored aggregates with a particle size of 4-6mm, and 55-70 parts of colored aggregates with a particle size of 2-4mm. 16-25 parts of colored aggregates, 10-16 parts of colored aggregates with a particle size of 0.1-2mm, and 6-9 parts of mineral powder with a particle size of 0.01-0.09mm. For example, the parts by weight of the cementitious material can be 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, etc., and the parts by weight of the colored aggregates whose particle diameter can be 4mm, 5mm, 6mm, etc. can be 55 parts , 57 parts, 59 parts, 61 parts, 63 parts, 65 parts, 67 parts, 69 parts, 70 parts, etc., the parts by weight of color aggregates whose particle diameter can be 2mm, 3mm, 4mm, etc. can be 16 parts, 17 parts Parts, 18 parts, 19 parts, 20 parts, 22 parts, 24 parts, 25 parts, etc., the particle size can be 0.1mm, 0.3mm, 0.6mm, 0.9mm, 1.2mm, 1.5mm, 1.8mm, 2mm, etc. The weight parts of the aggregate can be 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, etc., and the particle size can be 0.01mm, 0.03mm, 0.05mm, 0.07mm, 0.09mm, etc. The parts by weight of mineral powder can be 6 parts, 7 parts, 8 parts, 9 parts, etc. By adding cementing materials, it can be ensured that the concrete surface layer can be bonded to the surface of the colored aggregate on the constrained bottom layer, and by adding colored aggregates and mineral powders of different particle sizes and different parts by weight, the concrete surface layer can be made The colored aggregates with large particle size form a layered skeleton, and the gaps in the layered skeleton are filled by the colored aggregate with small particle size, so that the concrete surface has good compactness and stability, which further improves the concrete surface layer. Load capacity and wear resistance of concrete surface.

Specifically, according to the parts by weight of each component in the concrete surface layer, the above-mentioned components are placed in a concrete mixer and stirred evenly to obtain the raw materials for the concrete surface layer. The particle size components are allocated to make corresponding concrete surface materials. Among them, the colored aggregate in the concrete surface layer is the same as that in the constrained bottom layer, and the cementing material in the concrete surface layer is the same as that in the constrained bottom layer, which can ensure the thermal expansion and contraction of the concrete surface layer and the constrained bottom layer The degree is similar, so as to prevent cracking between the concrete surface layer and the restrained bottom layer during the temperature change process. The cementing material and colored aggregate will be further elaborated below.

Specifically, in the embodiment of the present invention, the cementing material includes the following components in parts by weight: 65-75 parts of polymethyl methacrylate, 20-30 parts of reactive diluent, 3-8 parts of toughening agent, curing agent 4-6 parts, tough curing agent 1-4 parts, accelerator 1-4 parts, toner 0.5-2 parts. For example, the parts by weight of polymethyl methacrylate can be 65 parts, 67 parts, 69 parts, 71 parts, 73 parts, 75 parts, etc., and the parts by weight of reactive diluent can be 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, etc., the parts by weight of the toughening agent can be 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, etc., and the parts by weight of the curing agent can be 4 parts parts, 5 parts, 6 parts, etc., the parts by weight of the toughness curing agent can be 1 part, 2 parts, 3 parts, 4 parts, etc., and the parts by weight of the accelerator can be 1 part, 2 parts, 3 parts, 4 parts etc., the parts by weight of the toner can be 0.5 parts, 0.8 parts, 1.1 parts, 1.4 parts, 1.7 parts, 2.0 parts, etc. Setting the weight parts of the above components in this way can enhance the synergistic effect of the above components, and then make the cementitious material have excellent viscosity, flexibility, thermal shock resistance, stability, and suitable curing reaction rate. Among them, the color of the toner is similar to that of the color aggregate, and the toner provides the main color for the constrained bottom layer, and laying the colored aggregate on the cementitious material can further increase the color of the constrained bottom layer.

Specifically, in the embodiment of the present invention, the cementing material layer is prepared by the following method:

Step 101. According to the parts by weight of each component, mix polymethyl methacrylate, reactive diluent and toughening agent and stir for 3-5 minutes to obtain a modified cementing solution.

Step 102, mixing and stirring the curing agent, toughness curing agent, and accelerator for 3-5 minutes to obtain a curing cement solution.

Step 103, mixing the modified cementation solution, the solidified cementation solution, and the toner and stirring for 3-5 minutes to obtain a cementation material, and coating the cementation material on the pavement substrate to form a cementation material layer.

The above process for preparing the cementitious material is simple, and the entire preparation process is time-consuming, which is convenient for popularization and use. Wherein, under the synergistic effect of the reactive diluent and the toughening agent, it is convenient to stir to prepare the modified cementing solution, and the modified cementing solution can form a uniform system by mixing and stirring. Under the synergistic effect of reactive diluent and toughener, the impact strength and cold and hot impact performance of polymethyl methacrylate can be improved. Among them, the synergistic effect of curing agent, toughness curing agent and accelerator can improve the curing rate of the cementing material, and can make the cured cementing material layer have excellent toughness, impact resistance and durability.

Specifically, polymethyl methacrylate is a non-toxic and environmentally friendly material with excellent aging resistance, corrosion resistance and good mechanical strength. It can be used as a matrix for cementing materials, and the raw materials are easy to obtain. Among them, polymethacrylic acid The chemical structural formula of methyl ester is as follows:

Specifically, the reactive diluent can reduce the viscosity of polymethyl methacrylate, thereby facilitating the stirring of the modified cementing solution. Wherein, the reactive diluent is at least one of butyl glycidyl ether, phenyl glycidyl ether, and benzyl glycidyl ether, for example, the reactive diluent can be any one, two or more of these three reactive diluents. A mixture of three. Preferably, the reactive diluent is butyl glycidyl ether, which has a good effect on diluting polymethyl methacrylate, and is convenient to make the components of the system uniform, and the molecule of butyl glycidyl ether contains ether bonds and rings. Oxyl groups can participate in the reaction when polymethyl methacrylate is cured, wherein the chemical structural formula of butyl glycidyl ether is as follows:

Specifically, the molecular structure of the toughening agent contains free-rotating and elastic long chains, and can participate in the curing reaction of polymethyl methacrylate, thereby improving the impact strength and thermal shock resistance of the above-mentioned cementitious materials. Wherein, the toughening agent is polypropylene glycol diglycidyl ether and/or chlorinated polyethylene, and the toughening agent can be any one of polypropylene glycol diglycidyl ether and chlorinated polyethylene, or a mixture of the two. As preferably, toughening agent is polypropylene glycol diglycidyl ether, and polypropylene glycol diglycidyl ether also can reduce the viscosity of polymethyl methacrylate, and contains two epoxy functional groups in its molecular structure, and flexibility is good, can further Improve the toughness and impact resistance of polymethyl methacrylate, wherein, the chemical structural formula of polypropylene glycol diglycidyl ether is as follows:

Specifically, the curing agent can cure the modified cementing solution mixed with polymethyl methacrylate, reactive diluent and toughening agent at room temperature, and can also make the cured product have good chemical stability. Wherein, the curing agent is at least one of m-xylylenediamine, diethylenetriamine, and diethylaminopropylamine. For example, the curing agent can be any one, two or three mixtures of the above three curing agents. . Preferably, the curing agent is m-xylylenediamine, which has a good curing effect, is cheap, and is easy to obtain. Its chemical structural formula is as follows:

Specifically, the toughness curing agent can make the cured cementing material have excellent toughness and impact resistance, and prevent the cementing material from cracking. Preferably, the toughness curing agent is polyetheramine, which has good toughness and impact resistance, is cheap, and is easy to obtain. Its chemical structural formula is as follows:

Specifically, the accelerator can accelerate the curing rate of the above-mentioned mixture of the modified cementing solution, the curing cementing solution, and the toner, which shortens the construction time. Wherein, the accelerator is nonylphenol and/or resorcinol, for example, the accelerator can be any one of nonylphenol and resorcinol, or a mixture of the two. Preferably, the accelerator is nonylphenol, which can promote the curing reaction, and is cheap and easy to obtain. Its chemical structural formula is as follows:

In the second aspect, the embodiment of the present invention also provides a laying method of the above-mentioned colored pavement structure, the laying method includes the following steps:

Step 201 , selecting a target pavement substrate, and performing shot blasting cleaning on the pavement substrate.

Step 202, then coating a layer of cementing material on the cleaned pavement substrate, and immediately after the coating is completed, sprinkle colored aggregates on the surface of the cementing material layer to form a colored aggregate layer, and then obtain a constrained bottom layer; Wherein, the coating amount of the cementing material layer is 1.25-1.45 kg/m ² , and the coating amount of the color aggregate layer is 1.60-1.95 kg/m ² .

Step 203. After the constrained bottom layer is cured, pour a concrete surface layer on the cured constrained bottom layer. After the concrete surface layer is cured, a colored pavement structure is obtained; wherein, the coating amount of the concrete surface layer is 2.5-3.5kg/m ² .

The laying method of the above-mentioned colored pavement structure is simple, and is convenient for practical application and popularization.

Specifically, in step 201, the pavement matrix is the original road surface, and the target pavement matrix can be cement pavement, asphalt pavement or metal pavement. By performing shot blasting cleaning on the target pavement matrix, while cleaning the target pavement matrix, It is also possible to make the surface of the target pavement substrate have a certain roughness, which is convenient for constraining the firm bond between the bottom layer and the target pavement substrate.

Specifically, in step 202, a layer of cementitious material is coated on the pavement substrate after cleaning, and the color aggregate is immediately sprinkled on the cementitious material layer, which is convenient for the cementitious material layer to disperse the colored aggregate in the process of curing. Bonds firmly to its surface. Among them, the coating amount of the cementing material layer can be 1.25kg/m ² , 1.30kg/m ² , 1.35kg/m ² , 1.40kg/m ² , 1.45kg/m ² etc., the coating amount of the color aggregate layer Can be 1.60kg/m ² , 1.65kg/m ² , 1.70kg/m ² , 1.75kg/m ² , 1.80kg/m ² , 1.85kg/m ² , 1.90kg/m ² , 1.95kg/m ² etc. , so that the coating amount of the cementing material layer and the coating amount of the color aggregate layer are set, the color aggregate layer can be firmly bonded on the cementing material layer, and through the mutual cooperation of the cementing material layer and the color aggregate layer, the A constrained base layer with a thickness of 2-5mm is formed, and the constrained base layer can simultaneously expand with heat and contract with the pavement substrate, thereby avoiding cracking or concave-convex deformation of the paved colored pavement.

Wherein, the particle diameter of the color aggregate sprinkled on the cementing material layer is 3-5mm, such as 3mm, 3.5mm, 4mm, 4.5mm, 5mm, etc., the particle diameter of the color aggregate is set within the above range, The surface of the color aggregate layer can be made fine and has uniform roughness, which facilitates the bonding between the color aggregate layer, the cementitious material layer and the concrete surface layer.

Specifically, in step 203, after the constrained bottom layer is cured, the slurry of the concrete surface layer can be spread on the surface of the constrained bottom layer with a paver, and the slurry can be further rolled and formed with a slick roller. After curing, a concrete surface can be obtained. By laying the concrete surface layer, the target pavement base, the restraint base layer, and the concrete surface layer can form a whole. When the concrete surface layer bears the load, the load can be effectively transferred to the target pavement base body, which can effectively solve the problem caused by the large load of the concrete surface layer. The fracture problem of the concrete surface layer occurs, and the concrete surface layer has excellent wear resistance and skid resistance, which further improves the service life of the colored pavement. Among them, the coating amount of the concrete surface layer can be 2.5kg/m ² , 2.6kg/m ² , 2.7kg/m ² , 2.8kg/m ² , 2.9kg/m ² , 3.0kg/m ² , 3.1kg/m 2 m ² , 3.2kg/m ² , 3.3kg/m ² , 3.4kg/m ² , 3.5kg/m ² , etc., so that the coating amount of the concrete surface layer can be set so that the laying thickness of the concrete surface layer is 6-25mm, In order to effectively protect and restrict the bottom layer.

Specifically, colored aggregates are added to the cementing material and the concrete surface layer. The colored aggregates can give the cementing material and the concrete surface a bright color, and can also form a layered skeleton structure that constrains the bottom layer and the concrete surface layer. The color aggregate also has excellent wear resistance and anti-skid performance, which can improve the service life of the colored pavement paved using the above-mentioned colored pavement structure. Wherein, the colored aggregate is selected from natural colored crushed stone and/or artificially made colored calcined ceramsite, for example, the colored aggregate can be selected from any one of colored crushed stone and artificially made colored calcined ceramsite, It can also be selected from the mixture of these two kinds of colored aggregates. These two kinds of colored aggregates have good wear-resistant and anti-slip effects, various colors, low prices, and easy access.

The present invention will be further described by specific examples below.

In the following specific examples, the operations involved were carried out in accordance with conventional conditions or the conditions suggested by the manufacturer for those whose conditions were not indicated. The raw materials used without indicating the manufacturer and specifications are all conventional products that can be obtained from the market.

Example 1

This embodiment provides a kind of colored pavement structure, and this pavement structure is laid by the following method and obtains: select the environmental protection electronic truck track (ECC) on the asphalt pavement as the target pavement substrate, carry out shot blasting cleaning treatment to this pavement substrate, Then on this pavement substrate, apply cementing material with the coating quantity of 1.35kg/m ² to form a cementing material layer, then immediately spread the average particle diameter of 4mm with the coating quantity of 1.7kg/m ² on the cementing material layer The red ceramic particles form a colored aggregate layer, and then get a bound bottom layer. After the constrained bottom layer is cured, its average thickness is 5mm. Then pour the slurry of the concrete surface layer on the constrained bottom layer with a coating amount of 3.2kg/ ^m2 , and spread the slurry through a paver, and use a smooth roller to roll the slurry into shape, and the concrete surface layer After curing, a concrete surface layer with an average thickness of 20 mm can be formed, and the colored pavement structure provided by this embodiment is obtained at this time.

Wherein, the cementing material is prepared by the following method: 70 parts by weight of polymethyl methacrylate, 25 parts by weight of butyl glycidyl ether, and 5 parts by weight of polypropylene glycol diglycidyl ether are mixed and stirred for 3 minutes to obtain a modified cementing solution. 5 parts by weight of xylylenediamine, 0.4 parts by weight of polyetheramine, 0.4 parts by weight of nonylphenol, mixed and stirred for 3 minutes to obtain a solidified cementation solution, and then the modified cementation solution, the solidified cementation solution and 0.8 parts by weight of red toner were mixed Stir for 3 minutes to prepare the cementitious material used in this implementation.

The concrete surface layer comprises the following components in parts by weight: 10 parts by weight of cementing material, 60 parts by weight of red calcined ceramsite with an average particle diameter of 5 mm, 25 parts by weight of red calcined ceramsite with an average particle diameter of 3 mm, and an average particle diameter of 13 parts by weight of 1mm red calcined ceramsite, 7 parts by weight of mineral powder with an average particle diameter of 0.05mm.

Example 2

This embodiment provides a kind of colored pavement structure, and this pavement structure is laid and obtained by the following method: select the sidewalk on a reinforced concrete bridge surface as the target pavement matrix, carry out shot blasting cleaning treatment to the pavement matrix of this sidewalk, and then On this pavement substrate, apply the cementitious material with a coating quantity of 1.25kg/m ² to form a cementitious material layer, and immediately spread an average particle diameter of 3.5mm with a coating quantity of 1.6kg/m ² on the cementitious material layer The green natural crushed stone forms a colored aggregate layer, which in turn gets bound to the bottom layer. After the constrained bottom layer is solidified, its average thickness is 3mm, and then the slurry of the concrete surface layer is poured on the constrained bottom layer with a coating amount of 2.6kg/ ^m2 , and the slurry is paved by a paver, and a light wheel is used to A road roller rolls the slurry into shape, wherein the coating amount of the concrete surface layer is 2.6kg/m ² , and after the concrete surface layer is solidified, a concrete surface layer with an average thickness of 10mm can be formed. At this time, the colored concrete surface layer provided by this embodiment is obtained. pavement structure.

Among them, the cementing material is prepared by the following method: 70 parts by weight of polymethyl methacrylate, 25 parts by weight of phenyl glycidyl ether, and 5 parts by weight of chlorinated polyethylene were mixed and stirred for 4 minutes to obtain a modified cementing solution, and diethylene triethylene 5 parts by weight of amine, 0.4 part by weight of polyether amine, 0.4 part by weight of resorcinol, mixed and stirred for 4 minutes to obtain a solidified cementing solution, and then mixed and stirred for 4 minutes with the modified cementing solution, the solidified cementing solution and 1 part by weight of green toner, The cementitious material used in this practice was prepared.

The concrete surface layer comprises the following components in parts by weight: 8 parts by weight of cementing material, 70 parts by weight of green natural gravel with an average particle size of 4.5mm, 25 parts by weight of green natural gravel with an average particle size of 3.5mm, and an average particle size of 4.5mm. 13 parts by weight of green natural gravel with a diameter of 1.2 mm, and 5 parts by weight of mineral powder with an average particle size of 0.04 mm.

Example 3

This embodiment provides a kind of colored pavement structure, and this pavement structure is laid by the following method and obtains: select the sidewalk on a reinforced concrete bridge deck as the target pavement substrate, carry out shot blasting cleaning treatment to the pavement substrate of this sidewalk, and then On this pavement substrate, apply cementitious material with the coating quantity of 1.25kg/m ² , form the cementitious material layer, spread the average particle diameter of 3.8mm with the coating quantity of 1.6kg/m ² immediately on this cementitious material layer Green natural crushed stone, forming a colored aggregate layer, which in turn is bound to the subfloor. After the constrained bottom layer is cured, its average thickness is 3mm. Then pour the slurry of the concrete surface layer on the constrained bottom layer with a coating amount of 2.5kg/m ² , and spread the slurry through a paver, and use a slick roller to roll the slurry into shape, and the concrete surface layer After curing, a concrete surface layer with an average thickness of 7mm can be formed, and the colored pavement structure provided by this embodiment is obtained at this time.

Wherein, the cementing material is obtained by the following method: 70 parts by weight of polymethyl methacrylate, 24 parts by weight of benzyl glycidyl ether, and 5 parts by weight of polypropylene glycol diglycidyl ether are mixed and stirred for 5 minutes to obtain a modified cementing solution, and two 5 parts by weight of ethylaminopropylamine, 0.4 parts by weight of polyetheramine, 0.4 parts by weight of nonylphenol, mixed and stirred for 5 minutes to obtain a solidified cementing solution, and then mixed and stirred for 3 minutes with the modified cementing solution, the solidified cementing solution and 1.2 parts by weight of green toner , to prepare the cementing material used in this implementation.

The concrete surface layer comprises the following components by weight: 8 parts by weight of cementing material, 65 parts by weight of green natural crushed stone with an average particle diameter of 5 mm, 22 parts by weight of green natural crushed stone with an average particle diameter of 3.8 mm, and 22 parts by weight of green natural crushed stone with an average particle diameter of 5 mm. 12 parts by weight of 1.4mm green natural gravel and 5 parts by weight of mineral powder with an average particle size of 0.06mm.

Application Example 1

In this application example, the comprehensive performance of the colored pavement paved using the colored pavement structures provided in Examples 1-3 is evaluated respectively, and then the comprehensive applicability of the colored pavement structures provided in the embodiments of the present invention is evaluated. Specifically, after using the colored pavement laid by the colored pavement structure provided in Examples 1-3 for half a year, the cracking or delamination of the constrained bottom layer of the colored pavement and the concrete surface layer, and the color aggregate in the concrete surface layer fall off. Conditions, deformation of the colored pavement and color fading of the colored pavement are tested in four aspects. The specific test results are shown in Table 1 below:

Table 1

colored pavement Cracking Shedding Deformation of road surface Discoloration of the pavement Example 1 uncracked Did not fall off Undeformed not faded Example 2 uncracked Did not fall off Undeformed not faded Example 3 uncracked Did not fall off Undeformed not faded

As can be seen from Table 1, the colored pavement laid by the colored pavement structure provided by Examples 1-3 does not appear to restrain the cracking or delamination of the bottom layer and the concrete surface layer after half a year of use, and the colored pavement in the concrete surface layer The aggregates did not fall off, and the colored pavement did not appear to be deformed or faded. It can be seen that the colored pavement structure provided by the embodiment of the present invention is not easy to crack, the colored aggregates are not easy to fall off, the durability is good, and the color is not easy to fade. It is suitable for It is mainly used in the color pavement of urban landscape roads.

The above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. a kind of colored paving structure, it is characterised in that the colored paving structure includes：The constraint being layed on the matrix of road surface Bottom, the concrete topping being layed on the constraint bottom；

The constraint bottom includes the agglutination material bed of material and the colored aggregate lift being coated on the agglutination material bed of material；

The agglutination material bed of material includes the component of following parts by weight：

Polymethyl methacrylate 65-75 parts, reactive diluent 20-30 parts, toughener 3-8 parts, curing agent 4-6 parts, toughness are solid Agent 1-4 part, accelerator 1-4 parts, toner 0.5-2 parts.

2. colored paving structure according to claim 1, it is characterised in that the concrete topping includes following weight portion Several components：

Cementing material 8-12 parts, particle diameter for 4-6mm colour gather materials 55-70 parts, particle diameter for 2-4mm colour gather materials 16-25 parts, Particle diameter for 0.1-2mm colour gather materials 10-16 parts, particle diameter for 0.01-0.09mm breeze 6-9 parts.

3. colored paving structure according to claim 1, it is characterised in that the agglutination material bed of material is made by the following method It is standby to obtain：

Step a, according to the parts by weight of each component, polymethyl methacrylate, reactive diluent, toughener are mixed and stirred for 3-5min, obtains the cementing solution that is modified；

Step b, curing agent, tough curing agent, accelerator are mixed and stirred for into 3-5min, obtain solidifying cementing solution；

Step c, the cementing solution that is modified, the cementing solution of the solidification, toner are mixed and stirred for into 3-5min, obtain agglutination material Material, the cementing material is coated on the road surface matrix, forms the agglutination material bed of material.

4. colored paving structure according to claim 1, it is characterised in that the reactive diluent is butyl glycidyl At least one in ether, phenyl glycidyl ether, benzyl glycidyl ether.

5. colored paving structure according to claim 1, it is characterised in that the toughener shrinks sweet for polypropylene glycol two Oily ether and/or haloflex.

6. colored paving structure according to claim 1, it is characterised in that the curing agent be the methanediamine of isophthalic two, two At least one in ethene triamine, diethylaminopropylamine.

7. colored paving structure according to claim 1, it is characterised in that the tough curing agent is polyetheramine.

8. colored paving structure according to claim 1, it is characterised in that the accelerator is nonyl phenol and/or isophthalic Diphenol.

9. the laying method of the colored paving structure described in any one of claim 1-8, it is characterised in that the laying method bag Include following steps：

Step α, selection target road surface matrix, to the road surface matrix ball blast cleaning treatment is carried out；

In step β and then road surface matrix after the cleaning process be coated with one layer of agglutination material bed of material, it is to be coated finish after, exist immediately Colour is dispensed on the surface of the agglutination material bed of material to gather materials, colored aggregate lift is formed, and then obtains constraint bottom；

Wherein, the coating weight of the agglutination material bed of material is 1.25-1.45kg/m², the coating weight of the colored aggregate lift is 1.60- 1.95kg/m²；

Step δ, after the constraint bottom solidification, casting concrete surface layer on the constraint bottom after hardening treats described After concrete topping solidification, the colored paving structure is obtained；

Wherein, the coating weight of the concrete topping is 2.5-3.5kg/m²。

10. laying method according to claim 9, it is characterised in that in step β, the particle diameter that the colour gathers materials is 3-5mm；

The colour gather materials selected from natural colored rubble and/or it is artificial made by colored calcination haydite.