CN111410495A - Rapid repairing material for bridge expansion joint and use method thereof - Google Patents
Rapid repairing material for bridge expansion joint and use method thereof Download PDFInfo
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- CN111410495A CN111410495A CN202010324962.8A CN202010324962A CN111410495A CN 111410495 A CN111410495 A CN 111410495A CN 202010324962 A CN202010324962 A CN 202010324962A CN 111410495 A CN111410495 A CN 111410495A
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- Prior art keywords
- water
- agent
- bridge expansion
- expansion joint
- repairing material
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Bridges Or Land Bridges (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a quick repairing material for a bridge expansion joint and a using method thereof. The patching material consists of A, B, C three components; wherein the component A consists of a composite hydraulic cementing material, aggregate, a water reducing agent, an early strength agent, a retarder, a coagulant, a defoaming agent, a water retention and health preserving agent, a high molecular polymer and composite fiber; the component B is a mixed solution of a water-based epoxy curing agent and deionized water; the component C is a mixed solution of water-based epoxy emulsion and deionized water. The rapid repairing material for the bridge expansion joint, prepared by the invention, has the characteristics of rapid strength increase in hours (the requirement of vehicle passing can be met in 3 hours), no need of health maintenance after vehicle passing, excellent anti-cracking performance, no later strength shrinkage, strong bonding performance with an old concrete interface and the like. The repairing material prepared by the invention is tested according to a testing method specified in JT/T1211.1-2018 fast repairing material for highway engineering, and the result can reach the standard requirement of CRRM-III type products.
Description
Technical Field
The invention relates to a quick repairing material for a bridge expansion joint and a using method thereof, belonging to the technical field of bridge reinforcement and maintenance.
Background
In recent years, the condition that the bridge expansion joints are damaged is more and more prominent due to the great improvement of the vehicle load grade and the rapid increase of the traffic flow in China. The statistical data show that: the expansion joint is the weakest part in the bridge structure, and the service life of the expansion joint is far shorter than the design life of the bridge. After the expansion joint suffered to destroy, influence the driving travelling comfort on the one hand, made the driver lack the sense of security, on the other hand leads to the vehicle to the impact of bridge superstructure, influences bridge major structure's atress, reduces bridge life. Frequent repair or replacement of the expansion joint not only seriously affects the smoothness and safety of traffic, but also brings resource waste and environmental problems, and improves the maintenance cost of the bridge.
According to the investigation and statistical analysis of the damage condition of the bridge expansion joint by related departments, the method comprises the following steps: almost all of the common expansion joint problems that are severely damaged are related to joint filling and concrete, with the majority of joint filling occurring in voids, hardening, cracking, loosening or tearing, and concrete spalling or cracking. The concrete damage is often the first disease to appear, which leads to the damage of the whole expansion joint anchoring system and further leads to the damage and the failure of the whole expansion joint device.
The traditional repairing material for the expansion joint mainly adopts steel fiber cement concrete, and has the advantages of high strength, large rigidity, strong bearing capacity, good stability, good durability and the like, but the traditional repairing material also has the problems that the traffic can not be opened immediately after the repairing, long-time maintenance is needed, and the traffic can be opened after the general repairing for 7-14 days, which is very troublesome for heavy traffic areas.
With the development of technology, rapid repair materials gradually appear in individual expansion joint repair engineering, but the repair time is 1-3 days, the requirement of rapid open traffic cannot be met, and if the rapid repair materials capable of enabling vehicles to pass in 3-6 hours can be developed, the problems can be effectively solved.
Disclosure of Invention
The invention aims to provide a quick repairing material for a bridge expansion joint and a using method thereof.
The rapid repairing material for the bridge expansion joint consists of A, B, C three components; wherein the component A comprises the following components in parts by mass: 40-50 parts of composite hydraulic cementing material, 50-60 parts of aggregate, 0.3-0.4 part of water reducing agent, 0.3-0.4 part of early strength agent, 0.04-0.06 part of retarder, 0.03-0.05 part of coagulant, 0.06-0.08 part of defoaming agent, 0.01-0.02 part of water-retaining health preserving agent, 0.5-0.8 part of high molecular polymer and 0.06-0.1 part of composite fiber; the component B is a mixed solution of a water-based epoxy curing agent and deionized water, wherein the mass content of the water-based epoxy curing agent is 45-50%; the component C is a mixed solution of water-based epoxy emulsion and deionized water, wherein the mass content of the water-based epoxy emulsion is 75-80%.
The composite hydraulic cementing material consists of P.R 7.5.5 road portland cement, CA 50-II aluminate cement and building gypsum N3.0 in a mass ratio of 80-90:5-10: 5-10.
The aggregate is composed of quartz sand, corundum and carborundum according to the mass ratio of 15-20:25-35:45-55, wherein the particle size range of the quartz sand is 0.075mm-0.6mm, the particle size range of the corundum is 0.6mm-2.36mm, and the particle size range of the carborundum is 2.36mm-4.75 mm.
The water reducing agent is a polycarboxylic acid high-efficiency water reducing agent, and the water reducing rate is 25-35%.
The early strength agent is calcium formate, and the fineness of the early strength agent is more than or equal to 200 meshes.
The retarder is one or two of sodium citrate and citric acid, and the fineness of the retarder is more than or equal to 300 meshes.
The coagulant is lithium carbonate with the fineness larger than or equal to 300 meshes.
The defoaming agent is an organic silicon defoaming agent.
The water-retaining health preserving agent is one or two of cross-linked carboxymethyl cellulose grafted acrylamide and cross-linked hydroxyethyl cellulose grafted acrylamide, and the fineness is 150-200 meshes.
The high molecular polymer is vinyl acetate and ethylene and higher fatty acid vinyl ester ternary copolymer rubber powder or vinyl acetate and acrylate and higher fatty acid vinyl ester ternary copolymer rubber powder.
The composite fiber is polypropylene fiber and copper-plated steel fiber. Wherein the length of the polypropylene fiber is 6-12mm, and the equivalent diameter is 30-50 μm; the length of the copper-plated steel fiber is 12-15mm, and the length-diameter ratio is 60-65.
The waterborne epoxy curing agent is a modified amine curing agent, wherein the solid content is 75-80%, the active hydrogen equivalent is 110-120, and the amine value is 380-400 mgKOH/g.
The solid content of the aqueous epoxy emulsion is 75-80%, and the epoxy equivalent is 250-300.
The use method of the rapid repairing material for the bridge expansion joint comprises the following steps: chiseling damaged concrete of the bridge expansion joint, blowing the tiny particles and dust clean by using high-pressure gas, then mixing A, B, C three components according to the mass ratio of 5:1:1, adding no extra water in the mixing process, pouring the mixture to a part needing to be repaired after the mixture is uniformly mixed, covering plastic cloth or a soaked water absorption material for curing after the mixture is leveled, removing a curing cover and a traffic control facility after 3 hours, and opening traffic.
The rapid repairing material for the bridge expansion joint, prepared by the invention, has the characteristics of rapid strength increase in hours (the requirement of vehicle passing can be met in 3 hours), no need of health maintenance after vehicle passing, excellent anti-cracking performance, no later strength shrinkage, strong bonding performance with an old concrete interface and the like. The rapid repairing material for the bridge expansion joint prepared by the invention is tested according to a testing method specified in JT/T1211.1-2018 rapid repairing material for highway engineering, and the result can meet the standard requirement of CRRM-III type products.
Detailed Description
The present invention will be further described with reference to specific embodiments, but the scope of the present invention is not limited thereto.
Example 1
The component A comprises:
the component B comprises:
| name (R) | Mass percent |
| Aqueous epoxy curing agent | 45 |
| Deionized water | 55 |
And the component C is as follows:
| name (R) | Mass percent |
| Aqueous epoxy emulsion | 75 |
| Deionized water | 25 |
Example 2A component:
the component B comprises:
| name (R) | Mass percent |
| Aqueous epoxy curing agent | 47 |
| Deionized water | 53 |
And the component C is as follows:
| name (R) | Mass percent |
| Aqueous epoxy emulsion | 77 |
| Deionized water | 23 |
Example 3
The component A comprises:
the component B comprises:
| name (R) | Mass percent |
| Aqueous epoxy curing agent | 50 |
| Deionized water | 50 |
And the component C is as follows:
| name (R) | Mass percent |
| Aqueous epoxy emulsion | 80 |
| Deionized water | 20 |
The rapid repair material for bridge expansion joints prepared in the above examples 1 to 3 was used for the concrete repair and application of bridge expansion joints: chiseling damaged concrete of the bridge expansion joint, blowing the tiny particles and dust clean by using high-pressure gas, then mechanically mixing according to the mass ratio of A, B, C components of 5:1:1, pouring the mixture to the chiseling part after uniformly mixing, manually collecting and leveling, covering plastic cloth for curing, removing curing covers and traffic control facilities after 3 hours, and opening traffic.
Example 1 test results
Example 2 test results
Example 3 test results
Test results show that the performance index of the rapid repair material prepared by the invention meets the standard requirement of CRRM-III type products in JT/T1211.1-2018 rapid repair materials for highway engineering.
Claims (10)
1. The quick repairing material for the bridge expansion joint is characterized by consisting of A, B, C components; wherein the component A comprises the following components in parts by mass: 40-50 parts of composite hydraulic cementing material, 50-60 parts of aggregate, 0.3-0.4 part of water reducing agent, 0.3-0.4 part of early strength agent, 0.04-0.06 part of retarder, 0.03-0.05 part of coagulant, 0.06-0.08 part of defoaming agent, 0.01-0.02 part of water-retaining health preserving agent, 0.5-0.8 part of high molecular polymer and 0.06-0.1 part of composite fiber; the component B is a mixed solution of a water-based epoxy curing agent and deionized water, wherein the mass content of the water-based epoxy curing agent is 45-50%; the component C is a mixed solution of water-based epoxy emulsion and deionized water, wherein the mass content of the water-based epoxy emulsion is 75-80%.
2. The quick repairing material for bridge expansion joints according to claim 1, wherein the composite hydraulic cementing material comprises P.R 7.5.5 road Portland cement, CA 50-II aluminate cement and building gypsum N3.0 in a mass ratio of 80-90:5-10: 5-10.
3. The quick repairing material for the bridge expansion joint according to claim 1, wherein the aggregate is composed of quartz sand, corundum and carborundum according to the mass ratio of 15-20:25-35:45-55, wherein the particle size range of the quartz sand is 0.075mm-0.6mm, the particle size range of the corundum is 0.6mm-2.36mm, and the particle size range of the carborundum is 2.36mm-4.75 mm.
4. The quick repairing material for the bridge expansion joint according to claim 1, wherein the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent, and the water reducing rate is 25-35%; the early strength agent is calcium formate, and the fineness of the early strength agent is more than or equal to 200 meshes; the retarder is one or two of sodium citrate and citric acid, and the fineness of the retarder is more than or equal to 300 meshes; the coagulant is lithium carbonate with the fineness more than or equal to 300 meshes; the defoaming agent is an organic silicon defoaming agent.
5. The rapid repairing material for the bridge expansion joint as claimed in claim 1, wherein the water retention and health preserving agent is one or two of cross-linked carboxymethyl cellulose grafted acrylamide and cross-linked hydroxyethyl cellulose grafted acrylamide, and the fineness is 150-200 mesh.
6. The rapid repair material for bridge expansion joints according to claim 1, wherein the high molecular polymer is a terpolymer rubber powder of vinyl acetate, ethylene and higher fatty acid vinyl ester or a terpolymer rubber powder of vinyl acetate, acrylic ester and higher fatty acid vinyl ester.
7. The quick repairing material for bridge expansion joints according to claim 1, wherein the composite fiber is polypropylene fiber and copper-plated steel fiber.
8. The rapid repair material for bridge expansion joints as claimed in claim 1, wherein the aqueous epoxy curing agent is a modified amine curing agent, wherein the solid content is 75-80%, the active hydrogen equivalent is 110-120, and the amine value is 380-400 mgKOH/g.
9. The rapid repair material for bridge expansion joints according to claim 1, wherein the solid content of the aqueous epoxy emulsion is 75-80%, and the epoxy equivalent is 250-300.
10. The use method of the rapid repair material for the bridge expansion joint according to any one of claims 1 to 9, which is characterized in that the use method comprises the following specific operations: chiseling damaged concrete of the bridge expansion joint, blowing the tiny particles and dust clean by using high-pressure gas, then mixing A, B, C three components according to the mass ratio of 5:1:1, adding no extra water in the mixing process, pouring the mixture to a part needing to be repaired after the mixture is uniformly mixed, covering plastic cloth or a soaked water absorption material for curing after the mixture is leveled, removing a curing cover and a traffic control facility after 3 hours, and opening traffic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010324962.8A CN111410495A (en) | 2020-04-23 | 2020-04-23 | Rapid repairing material for bridge expansion joint and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010324962.8A CN111410495A (en) | 2020-04-23 | 2020-04-23 | Rapid repairing material for bridge expansion joint and use method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111410495A true CN111410495A (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010324962.8A Pending CN111410495A (en) | 2020-04-23 | 2020-04-23 | Rapid repairing material for bridge expansion joint and use method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659369A (en) * | 2012-05-18 | 2012-09-12 | 山西省交通科学研究院 | Epoxy emulsion modified quick repair mortar for concrete roads and bridges and preparation method for mortar |
| CN104926253A (en) * | 2015-06-03 | 2015-09-23 | 河南汇能路桥科技有限公司 | Pavement/bridge deck concrete fast mending material and application thereof |
| US20170121918A1 (en) * | 2015-10-14 | 2017-05-04 | Heeron Tech(Wuhan)New Materials Co., Ltd. | Epoxy mortar adapted in bridge expansion joint and construction method thereof |
| CN107840626A (en) * | 2017-10-31 | 2018-03-27 | 长安大学 | Repair with double-doped injecting paste material and preparation method thereof in a kind of road face |
| CN110357544A (en) * | 2019-07-15 | 2019-10-22 | 天津炬实科技发展股份有限公司 | A kind of upper flow regime cracking resistance early-strength repairing mortar and preparation method thereof |
-
2020
- 2020-04-23 CN CN202010324962.8A patent/CN111410495A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659369A (en) * | 2012-05-18 | 2012-09-12 | 山西省交通科学研究院 | Epoxy emulsion modified quick repair mortar for concrete roads and bridges and preparation method for mortar |
| CN104926253A (en) * | 2015-06-03 | 2015-09-23 | 河南汇能路桥科技有限公司 | Pavement/bridge deck concrete fast mending material and application thereof |
| US20170121918A1 (en) * | 2015-10-14 | 2017-05-04 | Heeron Tech(Wuhan)New Materials Co., Ltd. | Epoxy mortar adapted in bridge expansion joint and construction method thereof |
| CN107840626A (en) * | 2017-10-31 | 2018-03-27 | 长安大学 | Repair with double-doped injecting paste material and preparation method thereof in a kind of road face |
| CN110357544A (en) * | 2019-07-15 | 2019-10-22 | 天津炬实科技发展股份有限公司 | A kind of upper flow regime cracking resistance early-strength repairing mortar and preparation method thereof |
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Application publication date: 20200714 |
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