CN111705651A - Antiskid wearing layer for steel bridge deck pavement and maintenance method - Google Patents
Antiskid wearing layer for steel bridge deck pavement and maintenance method Download PDFInfo
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- CN111705651A CN111705651A CN202010524400.8A CN202010524400A CN111705651A CN 111705651 A CN111705651 A CN 111705651A CN 202010524400 A CN202010524400 A CN 202010524400A CN 111705651 A CN111705651 A CN 111705651A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
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Abstract
The invention provides an anti-skid wearing layer for paving a steel bridge deck, which is sequentially provided with a resin layer and at least one reinforcing layer from top to bottom; the resin layer is formed by curing resin cementing materials; the reinforced layer is formed by consolidating aggregate above the resin cementing material; the resin cementing material comprises a component A and a component B; the weight ratio of the component A to the component B is 1: 1-2: 1; the component A comprises 20-50 parts by weight of bisphenol A type epoxy resin, 8-10 parts by weight of reactive diluent, 3-5 parts by weight of toughening agent, 2-4 parts by weight of antioxidant and 7-12 parts by weight of accelerator; the component B comprises a curing agent and an ultraviolet absorbent. The invention also provides a steel bridge deck pavement maintenance method. The antiskid wearing layer is applied to maintenance of an epoxy asphalt concrete pavement layer of a steel bridge deck, so that the antiskid property, the wear resistance and the driving safety of a road surface are improved, and the surface attractiveness, the smoothness and the driving comfort of the road surface subjected to treatment are improved for the road surface subjected to disease treatment.
Description
Technical Field
The invention relates to the technical field of road construction, in particular to an anti-skid wearing layer for paving a steel bridge deck and a maintenance method.
Background
In the development of steel bridge deck pavement in China, the steel bridge deck pavement structure mainly comprises pavement structures in various schemes such as introduced American double-layer epoxy asphalt concrete, Germany double-layer pouring asphalt concrete, Japanese four-series connection bridge schemes and the like. Wherein, the common application in China is the pavement of double-layer epoxy asphalt rigid bridge decks. Due to high temperature and heavy load in China, the bridge deck can face diseases such as cracks, pits, breaking and falling, net crack pushing and the like after being driven by a vehicle, particularly the damage of parts with concentrated damage, the bridge deck can be repaired for many times, and the appearance, driving comfort and skid resistance of the repaired bridge deck surface are reduced to some extent. In addition, the double-layer epoxy asphalt concrete of the conventional steel bridge deck pavement structure has small void ratio, compact surface and small structural depth, and the traditional anti-sliding and anti-wear layer is difficult to form a close adhesion relation with the double-layer epoxy asphalt concrete of the steel bridge deck pavement structure and is easy to fall off or peel off under vehicle load and rain wash.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the anti-skid wearing layer for paving the steel bridge deck, which is applied to the maintenance of the epoxy asphalt concrete pavement layer of the steel bridge deck, improves the skid resistance and the wear resistance of the pavement, improves the driving safety, and improves the surface aesthetics and the surface smoothness of the pavement subjected to disease treatment and the driving comfort of the pavement subjected to disease treatment.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
The first purpose of the invention is to provide an anti-skid wearing layer for paving a steel bridge deck, which is provided with a resin layer and at least one reinforcing layer from top to bottom in sequence; the resin layer is formed by curing a resin cementing material; the reinforced layer is formed by consolidating aggregate above the resin cementing material; wherein the resin cementing agent comprises a component A and a component B; the weight ratio of the component A to the component B is 1: 1-2: 1;
the component A comprises 20-50 parts by weight of bisphenol A type epoxy resin, 8-10 parts by weight of reactive diluent, 3-5 parts by weight of toughening agent, 2-4 parts by weight of antioxidant and 7-12 parts by weight of accelerator;
the component B comprises a curing agent and an ultraviolet absorbent.
Preferably, the aggregate is quartz sand with the grain size of 30-70 meshes.
Preferably, the reactive diluent is selected from at least one of glycidyl versatate and 1, 2-epoxycyclohexane; the toughening agent comprises a polyether toughening agent; the antioxidant is a phosphite antioxidant; the ultraviolet absorbent is at least one of phenyl ortho-hydroxybenzoate and carbon black.
Preferably, the curing agent comprises a polyamide.
Preferably, the weight of the ultraviolet absorbent is 0.5-1.5% of the weight of the A component.
Preferably, the reinforcing layer is two or three layers.
The second purpose of the invention is to provide a steel bridge deck pavement maintenance method, which comprises the following steps:
s10, spraying resin cement on the surface of the epoxy asphalt concrete pavement of the steel bridge deck, and uniformly spreading quartz sand on the surface of the sprayed resin cement to form a reinforcing layer;
s20, after the outermost reinforcing layer on the surface of the epoxy asphalt concrete pavement layer is in a solid state, spraying resin cementing material on the surface of the reinforcing layer to form the resin layer, so that the anti-skid wearing layer for paving the steel bridge deck is formed on the surface of the epoxy asphalt concrete pavement layer of the steel bridge deck.
Preferably, in step S10, the spraying amount of the resin binder is 0.8-1.0 Kg/m2(ii) a In step S10, the quartz sand is used in an amount of 1.8 to 2.0Kg/m2(ii) a In step S20, the spraying amount of the resin cementing material is 0.3-0.5 Kg/m2。
Preferably, step S10 further includes the step of forming several reinforcing layers arranged in a sequential stack:
s101, after the outermost reinforcing layer on the surface of the epoxy asphalt concrete pavement layer is in a solid state, spraying resin cement on the surface of the reinforcing layer, and uniformly spreading quartz sand on the surface of the sprayed resin cement to form a new outermost reinforcing layer on the surface of the epoxy asphalt concrete pavement layer;
s102, repeating the step S101 to form a plurality of enhancement layers which are sequentially stacked.
Preferably, the method further comprises the step of preparing a resin layer:
s11, weighing the epoxy resin, the reactive diluent, the toughening agent, the antioxidant and the accelerator according to the parts by weight, and stirring and mixing uniformly to obtain a component A mixture;
s12, weighing the curing agent and the ultraviolet absorbent according to the parts by weight, and stirring and mixing uniformly to obtain a component B mixture;
and S13, uniformly mixing the component A and the component B according to the weight ratio, and curing to form the resin layer.
Compared with the prior art, the invention has the beneficial effects that:
the anti-skid wearing layer for paving the steel bridge deck is environment-friendly, reduces energy consumption and carbon dioxide emission, is applied to maintenance of the epoxy asphalt concrete paving layer of the steel bridge deck, is easy to form a close adhesion relation with epoxy asphalt concrete and is not easy to peel off, improves the skid resistance and the wear resistance of the pavement, improves the driving safety, and also improves the surface aesthetics and the surface smoothness of the pavement after treatment and the driving comfort for the pavement subjected to disease treatment.
The invention provides a steel bridge deck pavement maintenance method, which constructs an anti-skid wearing layer on the surface of an epoxy asphalt concrete pavement layer of a steel bridge deck by spraying and spreading, is convenient to construct, and improves the skid resistance and the wear resistance of a lane pavement.
The foregoing description is only an overview of the technical solutions of the present invention, and some embodiments are described in detail below in order to make the technical solutions of the present invention more clearly understood and to implement the technical solutions according to the content of the description. Specific embodiments of the present invention are given in detail by the following examples.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a cross-sectional view of a steel bridge deck paving to construct an anti-skid wearing course in an embodiment of the present invention;
FIG. 2 is a schematic step view of a steel bridge deck pavement maintenance method according to an embodiment of the invention;
FIG. 3A is a top view of a roadway with an epoxy asphalt concrete pavement layer of a damaged steel deck according to an embodiment of the present invention;
FIG. 3B is a top view of a roadway with an epoxy asphalt concrete pavement layer of a steel deck treated for a disease according to an embodiment of the present invention;
fig. 3C is a top view of the lane after the anti-skid wearing layer is constructed on the epoxy asphalt concrete pavement layer of the steel bridge deck after the disease treatment in the embodiment of the invention.
In the figure: 1. an anti-skid wear layer; 11. a resin layer; 12. an enhancement layer; 2. a steel deck plate; 3. an epoxy asphalt concrete pavement layer; 31. cracking; 32. block diseases; 33. repairing cracks; 34. repairing the block-shaped diseases; 4. a first lane; 5. a second lane; 6. a third lane.
Detailed Description
In order that the invention described herein may be more fully understood, the following examples are set forth. It should be understood that these examples are for illustrative purposes only and are not to be construed as limiting the invention in any way.
The invention provides an anti-skid wearing layer for paving a steel bridge deck, wherein the anti-skid wearing layer 1 is sequentially provided with a resin layer 11 and at least one reinforcing layer 12 from top to bottom; the resin layer 11 is formed by curing a resin cementing material and is used for forming a protective layer on the surface of the reinforced layer 12 which is in contact with the resin layer 11 and flattening the outer surface of the anti-skid wearing layer; the reinforcing layer 12 is formed by consolidating aggregate above the resin cementing material, and the aggregate is consolidated and bonded by the numerical value cementing material, so that the strength of the reinforcing layer 12 is improved; wherein the resin cementing agent comprises a component A and a component B; the weight ratio of the component A to the component B is 1: 1-2: 1;
the component A comprises 20-50 parts by weight of bisphenol A type epoxy resin, 8-10 parts by weight of reactive diluent, 3-5 parts by weight of toughening agent and 2-4 parts by weight of antioxidant;
the component B comprises a curing agent and an ultraviolet absorbent. During construction, the component A and the component B are mixed to form the resin cementing material.
In one embodiment, the aggregate is quartz sand with a particle size of 30-70 meshes. The quartz sand is a hard, wear-resistant, chemically stable silicate mineral, so that the reinforcement layer 12 has a certain supporting strength and is wear-resistant.
In one embodiment, the reactive diluent is selected from at least one of glycidyl versatate, 1, 2-epoxycyclohexane. The diluent is used for reducing the viscosity of bisphenol A epoxy resin before curing, controlling the reaction heat in the mixing and curing process of the component A and the component B, prolonging the service life of the resin cementing material and further increasing the dosage of auxiliary materials which can be contained in the resin cementing material. The reactive diluent can participate in the curing reaction, so that after the non-reactive diluent is used, the non-reactive diluent does not participate in the reaction, and only physically permeates with the epoxy resin and the curing agent, and volatilizes along with the curing reaction to cause a gap to be left in the resin cementing material, so that the performance of the resin cementing material is not influenced. The tertiary carbonic acid glycidyl ester has shorter chain segment, and the bulky side group reduces intermolecular acting force, thereby reducing the viscosity of the bisphenol A type epoxy resin. The 1, 2-epoxy cyclohexane has stronger dissolving capacity to bisphenol A epoxy resin, and the 1, 2-epoxy cyclohexane has low viscosity, so that the viscosity of the bisphenol A epoxy resin before curing can be reduced, and the flowing property of the bisphenol A epoxy resin can be improved. Meanwhile, when bisphenol A epoxy resin is cured, the 1, 2-epoxy cyclohexane can generate epoxy group ring-opening polymerization to become a component part in a polymer with a network structure, so that the formed resin cementing material has certain mechanical strength and heat resistance.
In one embodiment, the toughening agent includes a polyether toughening agent for improving the overall toughness of the resin cement. Further, polyether toughening agents include, but are not limited to, polyether resins, carboxyl terminated polytetrahydrofuran polyethers. The carboxyl-terminated polytetrahydrofuran polyether has the advantages that a polytetrahydrofuran chain segment is introduced into a bisphenol A epoxy resin crosslinking network structure, so that the impact strength and crack expansion resistance of the resin cementing material are improved, and the low-temperature resistance of the resin cementing material is improved on the premise that the thermal property and the mechanical property of the formed resin cementing material are not influenced a little.
In an embodiment, the antioxidant is a phosphite antioxidant, which is used to delay yellowing of the formed resin binder, so as to improve the service life of the anti-sliding wear layer 1. Phosphite antioxidants retard oxidation processes and prolong service life by decomposing peroxides produced during oxidation and generating stable inactive products. The phosphite antioxidant can delay the oxidation of bisphenol A epoxy resin and resin cementing material formed by reaction in the storage process.
In one embodiment, the accelerator is selected to accelerate the curing reaction of the bisphenol a epoxy resin and the curing agent. Further, in an embodiment, the curing agent is polyamide, and the accelerator is selected from one of phenol and salicylic acid. In one embodiment, the ultraviolet absorber is at least one selected from phenyl ortho-hydroxybenzoate and carbon black. Factors causing oxidative yellowing of the oxidation system also comprise ultraviolet rays, the source of the ultraviolet rays is mainly sunlight, and an ultraviolet absorbent is added to improve the anti-aging performance of the resin cementing material.
In one embodiment, the curing agent comprises a polyamide. The polyamide curing agent has low viscosity, high bonding strength, high toughness and high heat resistance, and can meet the requirement of normal-temperature curing by modifying polyamide in order to ensure that the component A and the component B can be cured at normal temperature after being mixed.
In one embodiment, the weight of the ultraviolet absorber is 0.5-1.5% of the weight of the component a, so that the formed anti-sliding wear layer 1 has a certain ultraviolet resistance, and other mechanical properties of the anti-sliding wear layer 1 are not affected.
In one embodiment, the reinforcing layer 12 is two or three layers to ensure that the formed anti-sliding wearing layer 1 has a certain strength to delay the time of occurrence of a disease phenomenon on the road surface provided with the anti-sliding wearing layer 1. As shown in fig. 1, the anti-skid wearing layer 1 includes two reinforcing layers 2.
The invention also provides a steel bridge deck pavement maintenance method, as shown in fig. 2, comprising the following steps:
s10, spraying resin cement on the surface of the epoxy asphalt concrete pavement of the steel bridge deck, and uniformly spreading quartz sand on the surface of the sprayed resin cement to form a reinforcing layer 12; a part of the resin cementing material permeates into pores of the epoxy asphalt concrete pavement layer of the steel bridge deck to enhance the adhesion with the epoxy asphalt concrete pavement layer of the steel bridge deck, so as to avoid the phenomenon that the maintained pavement falls off or peels off under the action of vehicle load or rain wash;
s20, after the outermost reinforcing layer 12 on the surface of the epoxy asphalt concrete pavement layer is solid, resin cementing materials are sprayed on the surface of the reinforcing layer 12, a part of the resin cementing materials penetrate into gaps between aggregates in contact with the resin cementing materials, so that the adjacent aggregates form adhesion, and meanwhile, the resin cementing materials are cured to form the resin layer 11, so that the anti-sliding abrasion layer for paving the steel bridge deck is formed on the surface of the epoxy asphalt concrete pavement layer of the steel bridge deck.
The technical requirements for the quartz sand of the anti-sliding wear layer 1 are shown in table one.
| Performance of | Technical requirements |
| Apparent density (g/cm)3) | ≥2.5 |
| Water content (%) | ≤1.0 |
| Content of mud (%) | ≤0.5 |
| Silica content (%) | ≥99 |
| Particle size requirement | 30 to 70 mesh |
The technical requirements for the resin cement are shown in table two.
Watch two
| Performance of | Technical requirements |
| Permeability (mm) | 14～16 |
| Curing time (h) | ≤8 |
| Tensile Strength at Break (MPa) | ≥15 |
| Elongation at Break (%) | ≥10 |
Specifically, the epoxy asphalt concrete pavement layer of the steel bridge deck comprises a newly laid epoxy asphalt concrete pavement layer of the steel bridge deck or an epoxy asphalt concrete pavement layer of the steel bridge deck subjected to disease repair. The epoxy asphalt concrete pavement layer of the steel bridge deck is usually formed by paving double-layer epoxy asphalt concrete on the steel bridge deck. For the epoxy asphalt concrete pavement layer of the steel bridge deck after the disease repair, the method further comprises the step of performing surface treatment on the epoxy asphalt concrete pavement layer of the steel bridge deck, as shown in fig. 3A, 3B and 3C, and the method comprises the following steps:
(1) repairing the crack:
slotting and cleaning the crack 31, then pouring the crack by using sealant, jointing by using a joint tape after the crack pouring is finished, and forming a crack repair 33 after the treatment is finished; further, a seam tape with the width of 15cm is adopted for seam sticking;
(2) repairing the block-shaped diseases:
digging out the block-shaped disease 32, derusting the steel plate, brushing adhesive layer oil, paving by adopting epoxy asphalt concrete, and forming a block-shaped repair 34 after treatment.
As shown in fig. 3, the first lane 4 is currently free of defects, the second lane 5 is cracked, and the third lane 6 is damaged in a block shape. And respectively treating surface diseases of the second lane 5 and the third lane 6, and respectively constructing anti-sliding wearing layers 1 with certain lengths on the surfaces of the treated road surfaces of the second lane 5 and the third lane 6 so as to enable the repaired road surfaces of the second lane 5 and the third lane 6 to be smooth, anti-sliding, improve driving safety, wear-resisting and prolong the service life of the road surfaces.
Further, when the surface treatment is carried out on the epoxy asphalt concrete pavement layer of the steel bridge deck, the structural depth of the surface of the pavement layer is increased by adopting a fine milling or shot blasting roughening mode, and the treatment depth is 2 mm. And (3) after the surface treatment is carried out on the epoxy asphalt concrete pavement layer of the steel bridge deck, forming an anti-sliding abrasion layer 1 on the surface of the epoxy asphalt concrete pavement layer of the steel bridge deck after the surface treatment according to the steps S10 and S20 so as to maintain the surface of the epoxy asphalt concrete pavement layer of the steel bridge deck and improve the anti-sliding property and the abrasion resistance of the epoxy asphalt concrete pavement layer. Furthermore, for the pavement layer for disease treatment, a single lane width construction mode is adopted, the anti-skid wearing layer 1 is constructed for the lane for disease treatment, and the surface attractiveness and the driving comfort of the lane after disease treatment are improved. Usually, after the road surface is opened for a period of time, the surface cleanliness of the road surface is reduced, and the anti-skid wearing layer 1 is not easy to construct on the whole road surface, namely, the length of the anti-skid wearing layer 1 constructed on the lane subjected to disease treatment is determined according to the field requirement, and the whole lane is not required to be constructed completely.
In one embodiment, in step S10, the spraying amount of the resin binder is 0.8 to 1.0Kg/m2(ii) a In step S10, the quartz sand is used in an amount of 1.8 to 2.0Kg/m2(ii) a To form a reinforcing layer 12 having a certain wear resistance.
In one embodiment, in step S20, the spraying amount of the resin binder is 0.3 to 0.5Kg/m2So that the road surface after maintenance is smooth.
In one embodiment, step S10 further includes the step of forming several layers of reinforcement layers 12 arranged in a sequential stack:
s101, after the outermost reinforcing layer 12 on the surface of the epoxy asphalt concrete pavement layer is in a solid state, spraying resin cement on the surface of the reinforcing layer 12, and uniformly spreading quartz sand on the surface of the sprayed resin cement to form a new outermost reinforcing layer 12 on the surface of the epoxy asphalt concrete pavement layer;
s102, repeating the step S101 to form a plurality of enhancement layers 12 which are sequentially stacked.
In one embodiment, the method further comprises the steps of preparing the resin layer 11:
s11, weighing the epoxy resin, the reactive diluent, the toughening agent, the antioxidant and the accelerator according to the parts by weight, stirring for 5-15 min, and uniformly mixing to obtain a component A mixture;
s12, weighing the curing agent and the ultraviolet absorbent according to the parts by weight, stirring for 5-10 min, and uniformly mixing to obtain a component B mixture;
and S13, uniformly mixing the component A and the component B according to the weight ratio, stirring for 10-30 min, and curing to form the resin layer 11.
In order to illustrate the invention herein, various specific examples are set forth below. It should be understood that these examples are for illustrative purposes only and are not to be construed as limiting the invention in any way.
Example 1
Weighing the components A according to the parts by weight, stirring and mixing to obtain the component A, weighing the components B according to the parts by weight, stirring and mixing to obtain the component B, and mixing the component A and the component B to form the liquid resin cementing material. Weighing liquid resin cementing material and quartz sand with the grain diameter of 30 meshes according to weight at room temperature, and constructing the anti-sliding wearing layer 1 on the epoxy asphalt concrete slab cleaned in advance. Specifically, in the reinforcing layer 12, the spraying amount of the resin binder is 0.8Kg/m2The dosage of the quartz sand is 1.8Kg/m2(ii) a The spraying amount of the resin binder in the resin layer 11 was 0.3Kg/m2. The enhancement layer 12 is one layer.
Wherein the component A comprises 20 parts by weight of bisphenol A type epoxy resin, 8 parts by weight of 1, 2-epoxycyclohexane, 3 parts by weight of carboxyl-terminated polytetrahydrofuran polyether, 2 parts by weight of phosphite antioxidant and 7 parts by weight of salicylic acid; the component B comprises polyamide and 0.2 part by weight of phenyl o-hydroxybenzoate. The weight ratio of the component A to the component B is 1: 1.
example 2
Weighing the components A according to the parts by weight, stirring and mixing to obtain the component A, weighing the components B according to the parts by weight, stirring and mixing to obtain the component B, and mixing the component A and the component B to form the liquid resin cementing material. Weighing liquid resin cementing material and quartz sand with the grain diameter of 30 meshes according to weight at room temperature, and constructing the anti-sliding wearing layer 1 on the epoxy asphalt concrete slab cleaned in advance. Specifically, in the reinforcing layer 12, the spraying amount of the resin binder is 1.0Kg/m2The amount of the quartz sand is 2.0Kg/m2(ii) a The spraying amount of the resin binder in the resin layer 11 was 0.5Kg/m2. The enhancement layer 12 is one layer.
The component A comprises 50 parts by weight of bisphenol A epoxy resin, 10 parts by weight of 1, 2-epoxycyclohexane, 5 parts by weight of carboxyl-terminated polytetrahydrofuran polyether, 4 parts by weight of phosphite antioxidant and 12 parts by weight of salicylic acid; the component B comprises polyamide and 1.2 parts by weight of phenyl o-hydroxybenzoate. The weight ratio of the component A to the component B is 2: 1.
example 3
Weighing the components A according to the parts by weight, stirring and mixing to obtain the component A, weighing the components B according to the parts by weight, stirring and mixing to obtain the component B, and mixing the component A and the component B to form the liquid resin cementing material. Weighing liquid resin cementing material and quartz sand with the grain diameter of 30 meshes according to weight at room temperature, and constructing the anti-sliding wearing layer 1 on the epoxy asphalt concrete slab cleaned in advance. Specifically, in the reinforcing layer 12, the spraying amount of the resin binder is 1.0Kg/m2The dosage of the quartz sand is 2.0Kg/m2(ii) a The spraying amount of the resin binder in the resin layer 11 was 0.5Kg/m2. The enhancement layer 12 is one layer.
The component A comprises 50 parts by weight of bisphenol A epoxy resin, 10 parts by weight of glycidyl versatate, 5 parts by weight of carboxyl-terminated polytetrahydrofuran polyether, 4 parts by weight of phosphite antioxidant and 12 parts by weight of salicylic acid; the component B comprises polyamide and 1.2 parts by weight of phenyl o-hydroxybenzoate. The weight ratio of the component A to the component B is 2: 1.
example 4
Weighing the components A according to the parts by weight, stirring and mixing to obtain the component A, weighing the components B according to the parts by weight, stirring and mixing to obtain the component B, and mixing the component A and the component B to form the liquid resin cementing material. Weighing liquid resin cementing material and quartz sand with the grain diameter of 30 meshes according to weight at room temperature, and constructing the anti-sliding wearing layer 1 on the epoxy asphalt concrete slab cleaned in advance. Specifically, in the reinforcing layer 12, the spraying amount of the resin binder is 1.0Kg/m2The dosage of the quartz sand is 2.0Kg/m2(ii) a In the resin layer 11, the spraying amount of the resin binder was 0.5Kg/m2. The reinforcing layer 12 is two layers.
The component A comprises 50 parts by weight of bisphenol A epoxy resin, 10 parts by weight of 1, 2-epoxycyclohexane, 5 parts by weight of carboxyl-terminated polytetrahydrofuran polyether, 4 parts by weight of phosphite antioxidant and 12 parts by weight of salicylic acid; the component B comprises polyamide and 1.2 parts by weight of phenyl o-hydroxybenzoate. The weight ratio of the component A to the component B is 2: 1.
comparative example 1
The component A comprises 50 parts by weight of bisphenol A type epoxy resin, 10 parts by weight of 1, 2-epoxycyclohexane, 5 parts by weight of carboxyl-terminated polytetrahydrofuran polyether, 4 parts by weight of phosphite antioxidant and 12 parts by weight of salicylic acid; the component B comprises an acid anhydride curing agent and 1.2 parts by weight of phenyl o-hydroxybenzoate. The weight ratio of the component A to the component B is 2: 1. and (3) after the A component and the B component are mixed, heating to 120 ℃ for curing. The other technical means are the same as those of the embodiment 4.
Comparative example 2
The component A comprises 50 parts by weight of bisphenol A type epoxy resin, 5 parts by weight of carboxyl-terminated polytetrahydrofuran polyether, 4 parts by weight of phosphite antioxidant and 12 parts by weight of salicylic acid; the component B comprises polyamide and 1 part by weight of phenyl o-hydroxybenzoate. The weight ratio of the component A to the component B is 2: 1. the other technical means are the same as those of the embodiment 4.
Comparative example 3
The component A comprises 50 parts by weight of bisphenol A type epoxy resin, 10 parts by weight of 1, 2-epoxy cyclohexane and 12 parts by weight of salicylic acid; the component B comprises polyamide. The weight ratio of the component A to the component B is 2: 1. the other technical means are the same as those of the embodiment 4.
Example 5
The performance indexes of the anti-sliding wear layer materials prepared in examples 1 to 4 and comparative examples 1 to 3 were measured and shown in table three.
Watch III
The anti-skid wearing layer for paving the steel bridge deck is environment-friendly, reduces energy consumption and carbon dioxide emission, is easy to form a close adhesion relation with epoxy asphalt concrete and not easy to peel off, improves the skid resistance and the wear resistance of the pavement, improves the driving safety, and also improves the surface aesthetics and the surface smoothness of the pavement subjected to disease treatment and the driving comfort of the pavement subjected to disease treatment.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of adaptation of the invention, and further modifications can be easily implemented by those skilled in the art, so that the invention is not limited to the specific details and the examples shown herein, without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. The anti-skid wearing layer for paving the steel bridge deck is characterized in that the anti-skid wearing layer (1) is sequentially provided with a resin layer (11) and at least one reinforcing layer (12) from top to bottom; the resin layer (11) is formed by curing a resin cementing material; the reinforcing layer (12) is formed by consolidating aggregate above the resin binder; wherein the resin cementing agent comprises a component A and a component B; the weight ratio of the component A to the component B is 1: 1-2: 1;
the component A comprises 20-50 parts by weight of bisphenol A type epoxy resin, 8-10 parts by weight of reactive diluent, 3-5 parts by weight of toughening agent, 2-4 parts by weight of antioxidant and 7-12 parts by weight of accelerator;
the component B comprises a curing agent and an ultraviolet absorbent.
2. The anti-sliding wearing layer for paving the steel bridge deck as claimed in claim 1, wherein the aggregate is quartz sand with a particle size of 30-70 meshes.
3. The anti-skid wearing layer for paving the steel bridge deck as claimed in claim 1, wherein the reactive diluent is selected from at least one of glycidyl versatate and 1, 2-epoxycyclohexane; the toughening agent comprises a polyether toughening agent; the antioxidant is a phosphite antioxidant; the ultraviolet absorbent is at least one of phenyl ortho-hydroxybenzoate and carbon black.
4. The anti-skid wearing layer for steel bridge deck pavement according to claim 1, wherein the curing agent comprises polyamide.
5. The anti-skid wearing layer for paving the steel bridge deck as claimed in claim 1, wherein the weight of the ultraviolet absorbent is 0.5-1.5% of that of the A component.
6. The anti-skid wearing layer for paving the steel bridge deck as claimed in claim 1, wherein the reinforcing layer (12) has two or three layers.
7. The steel bridge deck pavement maintenance method is characterized by comprising the following steps:
s10, spraying resin cement on the surface of the epoxy asphalt concrete pavement of the steel bridge deck, and uniformly spreading quartz sand on the surface of the sprayed resin cement to form a reinforcing layer (12);
s20, after the outermost reinforcing layer (12) on the surface of the epoxy asphalt concrete pavement layer is in a solid state, spraying resin cementing material on the surface of the reinforcing layer (12) to form the resin layer (11), so that the anti-skid wearing layer for paving the steel bridge deck as claimed in any one of claims 1 to 6 is formed on the surface of the epoxy asphalt concrete pavement layer of the steel bridge deck.
8. The method for paving and maintaining the steel bridge deck as claimed in claim 7, wherein in the step S10, the spraying amount of the resin cement is 0.8-1.0 Kg/m2(ii) a In step S10, the quartz sand is used in an amount of 1.8 to 2.0Kg/m2(ii) a In step S20, the spraying amount of the resin cementing material is 0.3-0.5 Kg/m2。
9. The method for paving and maintaining the steel bridge deck as claimed in claim 7, wherein the step S10 further comprises the steps of forming a plurality of reinforcing layers (12) which are sequentially stacked:
s101, after an outermost reinforcing layer (12) on the surface of the epoxy asphalt concrete pavement layer is in a solid state, spraying resin cement on the surface of the reinforcing layer (12), and uniformly spreading quartz sand on the surface of the sprayed resin cement to form a new outermost reinforcing layer (12) on the surface of the epoxy asphalt concrete pavement layer;
s102, repeating the step S101 to form a plurality of enhancement layers (12) which are sequentially stacked.
10. The paving and maintenance method of the steel bridge deck according to claim 7, characterized by further comprising the steps of preparing a resin layer (11):
s11, weighing the epoxy resin, the reactive diluent, the toughening agent, the antioxidant and the accelerator according to the parts by weight, and stirring and mixing uniformly to obtain a component A mixture;
s12, weighing the curing agent and the ultraviolet absorbent according to the parts by weight, and stirring and mixing uniformly to obtain a component B mixture;
and S13, uniformly mixing the component A and the component B according to the weight ratio, and curing to form the resin layer (11).
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| CN115286769A (en) * | 2022-08-08 | 2022-11-04 | 广西交科集团有限公司 | Modified epoxy resin-based cementing material for colored ultrathin composite layer and preparation method thereof |
| CN115627051A (en) * | 2022-10-18 | 2023-01-20 | 保利长大工程有限公司 | Preparation method of high-performance wide-temperature-range epoxy resin binder |
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| CN115286769A (en) * | 2022-08-08 | 2022-11-04 | 广西交科集团有限公司 | Modified epoxy resin-based cementing material for colored ultrathin composite layer and preparation method thereof |
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