CN101337792A - Repairing agent for cement concrete bridge deck thin layer - Google Patents
Repairing agent for cement concrete bridge deck thin layer Download PDFInfo
- Publication number
- CN101337792A CN101337792A CNA2008101246319A CN200810124631A CN101337792A CN 101337792 A CN101337792 A CN 101337792A CN A2008101246319 A CNA2008101246319 A CN A2008101246319A CN 200810124631 A CN200810124631 A CN 200810124631A CN 101337792 A CN101337792 A CN 101337792A
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- thin layer
- cement concrete
- cement
- concrete
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Classifications
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/06—Acrylates
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Road Paving Structures (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a cement concrete deck lamina repairing agent, which comprises a component A and a component B. The component A is polymer emulsion which is either pure acrylic emulsion or styrene-acrylate emulsion. The component B is a powdered material rich in fiber, which is prepared with the following components by weight: 35 to 75 percent of an expansion agent; 0 to 20 percent of sodium sulphate; 0 to 6 percent of a water reducer; 0.5 to 6.0 percent of synthetic coarse fiber, 0 to 42 percent of pulverized fuel ash or powdered ore. After the component A and the component B are added to and mixed in concrete mixture pro rata, the repaired hardened concrete and the original concrete have high crack resistance, crush resistance, impact and grinding resistance and stripping resistance; the repaired concrete can be open to traffic after 24 hours. The cement concrete deck lamina repairing agent can be used for repairing laminae of cement concrete deck and road.
Description
[technical field]
The present invention relates to the anti-patching material that peels off thin layer of a kind of cement concrete bridge deck cracking resistance.
[background technology]
Cement concrete bridge deck its laminate of mating formation in the operation process is prone to cracking, comes off, and the damage of deck paving is mainly caused by following several respects factor:
1. the decking insufficient rigidity causes bigger deformation under the effect of heavy load, adds the bump vibrations of vehicle, make decking and the layer appearance cracking of mating formation, and development rapidly.
2. mat formation the layer and the beam face between the viscosifying power deficiency, the layer of mating formation under loading action can not bear external load with an overall work with main supporting member, destroyed concrete globality, under the severe impact of driving and loading action, made bridge floor decortication, crack occur easily, phenomenon such as peel off.
3. the influence of hogging moment owing to the effect of load produces hogging moment or pulling force, makes bridge deck pavement be subjected to the effect of pulling force and is easy to generate the crack, thereby causes the damage of deck paving.
4. the influence of bridge surface waterproof layer.Because the intensity of the intensity of waterproof layer and mainboard and the layer of mating formation is variant, middle flexible sandwich can increase tensile stress at the bottom of the plate at decking middle part, is in the layer of mating formation on the waterproof layer once cracking, under the dynamic load function of wheel, slit to each other is increasing, comes off up to loose.
Except that above structure reason, the construction quality of bridge deck pavement also can reduce cracking resistance, shock resistance, the counter-bending and wear resistance of bridge deck pavement, thereby directly influences the life-span of bridge deck pavement.
The concrete bridge deck pavement layer occur big area cracked, come off or during serious plant disease such as cave, can cut whole former breakages layer of mating formation and repair.When bridge floor is repaired, how to strengthen the mat formation layer and the cementability of bridge floor, and the cracking resistance that improves bridge floor, shock resistance and fatigue resistance become the gordian technique that bridge floor is repaired, combine closely for making bridge deck pavement and beam slab, usually adopt the technology of bar planting at present in the engineering, promptly when repairing, set up reinforcing mat or bar planting reinforcing with the junction of decking at the layer of mating formation, so that deck paving combines with beam slab closely, this method difficulty of construction is big, cycle is long, still there is the gap in the layer of mating formation during repairing with the bridge floor layer, under the heavy duty and repeated stock of vehicle, still can occur destroying.
Another kind of common deck paving method for repairing and mending is to mix steel fiber in concrete, to strengthen the splitting resistance and the shock resistance of bridge floor.Because volume content of steel fibers is too high, disperse to be difficult to evenly, when repairing, thin layer often appears, and therefore puncture tire easily, thereby influence traffic safety.The deck paving early damage has had a strong impact on the comfortableness that traffic is passed through, security, has brought bigger improvement maintenance difficulty for maintenance maintenance department, it is unimpeded to influence normal traffic operation, for fundamentally addressing this problem, should accelerate further research to the deck paving repairing technique.
[summary of the invention]
What the present invention will solve is exactly the cement concrete bridge deck problem that its laminate of mating formation is prone to cracking, comes off in the operation process, proposes a kind of repairing agent for cement concrete bridge deck thin layer.
The present invention includes the two components of planting of A, B, when construction, mix in the concrete mix; Described A component is a polymer emulsion, select a kind of in pure-acrylic emulsion, the benzene emulsion for use, described B component is the powder material of fiber-enriched, formulated by weight proportion by following component: swelling agent 35-75%, Sodium sulfate anhydrous.min(99) 0-20%, water reducer 0-6%, synthetic robust fibre 0.5-6.0%, flyash or breeze 0-42%.
The volume of above-mentioned A component is the 5-15% of the used cement weight of mending concrete, and the volume scope of B component is the 12-16% of the used cement weight of mending concrete.
Above-mentioned swelling agent is selected from calcium sulphoaluminate class swelling agent or the alunite class swelling agent that satisfies the JC476-2001 standard-required.
Above-mentioned Sodium sulfate anhydrous.min(99) is technical grade powdery Na
2SO
4
Above-mentioned water reducer is selected from GB8076-1997 standard-required solid naphthalene system or polycarboxylate water-reducer, is the solid naphthalene water reducer or the polycarboxylate water-reducer of major ingredient with beta-naphthalenesulfonic-acid salt formaldehyde condensation polymers preferably.
Above-mentioned synthetic robust fibre is the equivalent diameter that formed by polypropylene and the wire drawing of polyethylene particles mixed melting greater than 0.5 millimeter fiber, and profile mostly is waviness, has commercially availablely, and the commodity that applicant oneself produces Rimix structural fibers by name promptly is this kind fiber.
Above-mentioned flyash is the waste that the coal-burning power plant adopts the method for electrostatic precipitation to collect from boiler smoke, is selected from I level ash or the II level ash any one.
Above-mentioned breeze is used the granulation blast furnace iron powder for ironmaking, is the S95 level.
Major function of the present invention is:
1. improve mending concrete Crack Control ability
Concrete primary fracture be can suppress effectively, fissured quantity and size reduced.Simultaneously, when the crack occurs, can make concrete after splitting, still keep advantages of higher tensile strength, control fissured development.
2. improve the cementability of mending concrete and bridge floor
Mending concrete and bridge floor have very high bonding strength and can improve the Young's modulus of the limit elongation of mending concrete, reduction mending concrete.Young's modulus, thermal expansivity and substrate concrete are very approaching, therefore are difficult for hollowing.
3. accelerate the intensity of mending concrete
Mending concrete has fast strong fast hard characteristics, and one sky ultimate compression strength can reach 20.0Mpa, and folding strength can reach 3.0Mpa, thereby makes mending concrete open to traffic in 1 day.
4. improve elastic modulus of concrete, wear-resistant antidetonation, the anti-crushing ability of undermining
Make concrete water bleeding even, and the segregation of obstruction aggregate, make concrete form more firm surface, thereby significantly improve concrete wear resistance, simultaneously owing to absorbed striking energy and increased the continuity of concrete medium, concrete shock resistance and antidetonation, anti-crushing ability increase substantially.
5. improve the toughness and the ductility of mending concrete
Can increase substantially concrete bend ductility, thereby can improve concrete fragility, improve concrete globality and ductility, concrete anti-fatigue ability and weather resistance are improved significantly.
6. improve the impervious ability of mending concrete
Suppress the generation of through crack, improved concrete density, thereby improved concrete anti-permeability performance.
Technical characterstic of the present invention is:
1, the thin layer that is applicable to positions such as deck paving, leveling layer is repaired, and when repairing thickness and being 2-6cm, mending concrete is a 5-20mm continuous grading pea gravel concreten, and when repairing thickness＜2cm, available mortar is repaired.
2, patching material insulation, antimagnetic, antirust, anti-corrosion can improve the cracking resistance of mending concrete, anti-crushing ability and can not puncture tire, helps traffic safety.
3, the mending concrete bonding force is good, forms perfect structural entity with bridge floor, can not take off to split and peel off under loading action.
4, high-early-strength, can be in 24 hours open to traffic.
Using method of the present invention is:
1, carry out base treatment and accomplish that basic unit is smooth, firm, clean before the construction, and water is fully wetting, can construct during no ponding.
2, with A component preparation cement paste.Clean slurry proportioning is a polymkeric substance: cement=1: 2, and the clean slurry of polymkeric substance is painted on basic unit with roller or hairbrush
3, the volume of preparation mending concrete thin layer healant is the A component: the 5-15% of cement consumption, and 15% of B component cement consumption, concrete slump is controlled at about 5cm, will do cast mending concrete when not dried at the clean slurry of basic unit.
4, treat thin layer mending concrete surface touch do after, should cover with the agricultural atomizer fog curing or with film.
5, after maintenance finishes, and starch only at surface layer brushing one layer of polymeric.
6, but mending concrete is poured into a mould open to traffic after 24 hours.
[embodiment]
The invention will be further described below in conjunction with embodiment.
Embodiment 1
The A component is selected from the pure-acrylic emulsion into cement weight 5%;
The B component is 16% of a cement weight, and its proportioning is as follows:
Calcium sulphoaluminate class cement expansive material 35%, Sodium sulfate anhydrous.min(99) 20%, naphthalene water reducer 6%, synthetic robust fibre 2%, II level flyash 37%,
Embodiment 2
The A component is selected from the pure-acrylic emulsion into cement weight 10%;
B component cement weight 16%, its proportioning is as follows:
Calcium sulphoaluminate class cement expansive material 45%, Sodium sulfate anhydrous.min(99) 5%, naphthalene water reducer 6%, synthetic robust fibre 6%, II level flyash 38%
Embodiment 3
The A component is the pure-acrylic emulsion that is selected from cement weight 10%;
B component cement weight 12%, its proportioning is as follows:
Calcium sulphoaluminate class cement expansive material 75%, Sodium sulfate anhydrous.min(99) 13%, naphthalene water reducer 6%, synthetic robust fibre 6%, flyash 0%
Embodiment 4
The A component is the pure-acrylic emulsion that is selected from cement weight 15%;
B component cement weight 16%.Its proportioning is as follows:
Alunite class swelling agent 70%, Sodium sulfate anhydrous.min(99) 0, naphthalene water reducer 6%, synthetic robust fibre 0.5%, I level flyash 23.5%;
Embodiment 5
The A component is the pure-acrylic emulsion that is selected from cement weight 15%
B component cement weight 15%, its proportioning is as follows:
Alunite class swelling agent 50%, Sodium sulfate anhydrous.min(99) 15%, naphthalene water reducer 4%, synthetic robust fibre 3%, I level flyash 28%
Embodiment 6
The A component is the pure-acrylic emulsion that is selected from cement weight 15%
B component cement weight 15%,
Its proportioning is as follows: calcium sulphoaluminate class swelling agent 50%, Sodium sulfate anhydrous.min(99) 15%, polycarboxylate water-reducer 4%, synthetic robust fibre 6%, breeze 25%
Embodiment 7
The A component is the pure-acrylic emulsion that is selected from cement weight 15%
B component cement weight 15%,
Its proportioning is as follows: calcium sulphoaluminate class swelling agent 50%, Sodium sulfate anhydrous.min(99) 15%, polycarboxylate water-reducer 4%, synthetic robust fibre 6%, I level flyash 25%
Embodiment 8
The A component is the benzene emulsion that is selected from cement weight 15%
B component cement weight 12%,
Its proportioning is as follows: calcium sulphoaluminate class swelling agent 50%, Sodium sulfate anhydrous.min(99) 19%, water reducer 0, synthetic robust fibre 6%, I level flyash 25%
[performance study of embodiment]
1.1d the DL/T5126-2001 rules are followed in cohesive strength-polymer cement mortar experiment
Sole silt particle lumps is ready to, ultimate compression strength is greater than 45.0Mpa, according to the making of polymer-modified cement mortar bonding testing piece, be coated with epoxy resin binder, leave standstill in the laboratory then and on trier, tested in 24 hours at polymer cement mortar time upper surface.
2. the crack reduces coefficient η
Dry shrinkage split test method is measured the restriction contract with dry rate of test specimen at 1d, 3d, 7d, 14d, 28d, 45d, 60d with reference to the cement and the cement-based gelling material cracking test method of " concrete durability design and construction guide ".During from the subsides foil gauge, the changing conditions that occurs every 12h observation at interval crack, the fissured width of test cracking test specimen, fissured total number L, crack when record 1d, 3d, 7d, 14d, 21d, 28d.During test with being with graduated microscope to test fissured width.
3. folding strength
Folding strength is followed the experimental technique among the concrete admixture GB8076-1997, and experimental result is as follows:
Claims (8)
1. a repairing agent for cement concrete bridge deck thin layer is characterized in that comprising the two components of planting of A, B; Described A component is a polymer emulsion, selects a kind of in pure third, the benzene emulsion for use; Described B component is the powder material of fiber-enriched, and is formulated by weight proportion by following component: swelling agent 35-75%, Sodium sulfate anhydrous.min(99) 0-20%, water reducer 0-6%, synthetic robust fibre 0.5-6.0%, flyash or breeze 0-42%.
2, cement concrete bridge floor thin layer healant according to claim 1, the volume that it is characterized in that the A component is the 5-15% of the used cement weight of mending concrete, the volume scope of B component is the 12-16% of the used cement weight of mending concrete.
3, repairing agent for cement concrete bridge deck thin layer as claimed in claim 1 or 2 is characterized in that described swelling agent is calcium sulphoaluminate class cement expansive material or alunite class swelling agent.
4. repairing agent for cement concrete bridge deck thin layer as claimed in claim 1 or 2 is characterized in that described Sodium sulfate anhydrous.min(99) is technical grade powdery Na
2SO
4
5. repairing agent for cement concrete bridge deck thin layer as claimed in claim 1 or 2 is characterized in that described water reducer is selected from solid naphthalene system or polycarboxylate water-reducer.
6. repairing agent for cement concrete bridge deck thin layer as claimed in claim 1 or 2 is characterized in that described synthetic robust fibre is the fiber of equivalent diameter greater than 50um.
7. repairing agent for cement concrete bridge deck thin layer as claimed in claim 1 or 2 is characterized in that described flyash is the waste that the coal-burning power plant adopts the method for electrostatic precipitation to collect from boiler smoke, is selected from I level ash or the II level ash any one
8, repairing agent for cement concrete bridge deck thin layer as claimed in claim 1 or 2 is characterized in that described breeze is ironmaking granulation blast furnace iron powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101246319A CN101337792A (en) | 2008-08-27 | 2008-08-27 | Repairing agent for cement concrete bridge deck thin layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101246319A CN101337792A (en) | 2008-08-27 | 2008-08-27 | Repairing agent for cement concrete bridge deck thin layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101337792A true CN101337792A (en) | 2009-01-07 |
Family
ID=40211986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101246319A Pending CN101337792A (en) | 2008-08-27 | 2008-08-27 | Repairing agent for cement concrete bridge deck thin layer |
Country Status (1)
| Country | Link |
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| CN (1) | CN101337792A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351491A (en) * | 2011-06-17 | 2012-02-15 | 华北水利水电学院 | Concrete building anti-abrasion thin layer repairing material and repairing construction method |
| CN102351499A (en) * | 2011-08-05 | 2012-02-15 | 上海丰慧节能环保科技有限公司 | Adhesive special for inorganic insulation board |
| CN102838334A (en) * | 2012-09-28 | 2012-12-26 | 中铁十九局集团有限公司 | Concrete member repairing agent, preparation method and construction method |
| CN103045041A (en) * | 2013-01-22 | 2013-04-17 | 中交第一公路勘察设计研究院有限公司 | Concrete bridge structure surface protective coating material based on pure acrylic emulsion and preparation method thereof |
| CN105218058A (en) * | 2015-11-04 | 2016-01-06 | 江苏名和集团有限公司 | A kind of concrete speed is hammered in slurry healant |
| CN106630858A (en) * | 2017-01-03 | 2017-05-10 | 南京航空航天大学 | Surface strengthening and repairing material for hydraulic concrete, and application thereof |
| CN109096734A (en) * | 2018-05-25 | 2018-12-28 | 湖南匡楚科技有限公司 | A kind of road repair composite material and preparation method prepared using waste and old sole |
-
2008
- 2008-08-27 CN CNA2008101246319A patent/CN101337792A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351491A (en) * | 2011-06-17 | 2012-02-15 | 华北水利水电学院 | Concrete building anti-abrasion thin layer repairing material and repairing construction method |
| CN102351491B (en) * | 2011-06-17 | 2012-09-19 | 华北水利水电学院 | Concrete building anti-abrasion thin layer repairing material and repairing construction method |
| CN102351499A (en) * | 2011-08-05 | 2012-02-15 | 上海丰慧节能环保科技有限公司 | Adhesive special for inorganic insulation board |
| CN102838334A (en) * | 2012-09-28 | 2012-12-26 | 中铁十九局集团有限公司 | Concrete member repairing agent, preparation method and construction method |
| CN102838334B (en) * | 2012-09-28 | 2014-06-11 | 中铁十九局集团有限公司 | Concrete member repairing agent, preparation method and construction method |
| CN103045041A (en) * | 2013-01-22 | 2013-04-17 | 中交第一公路勘察设计研究院有限公司 | Concrete bridge structure surface protective coating material based on pure acrylic emulsion and preparation method thereof |
| CN103045041B (en) * | 2013-01-22 | 2016-04-20 | 西安中交土木科技有限公司 | Based on the concrete bridge structure surface protection coating material and preparation method thereof of pure-acrylic emulsion |
| CN105218058A (en) * | 2015-11-04 | 2016-01-06 | 江苏名和集团有限公司 | A kind of concrete speed is hammered in slurry healant |
| CN106630858A (en) * | 2017-01-03 | 2017-05-10 | 南京航空航天大学 | Surface strengthening and repairing material for hydraulic concrete, and application thereof |
| CN106630858B (en) * | 2017-01-03 | 2019-11-05 | 南京航空航天大学 | A kind of concrete for hydraulic structure surface peening patching material and its application |
| CN109096734A (en) * | 2018-05-25 | 2018-12-28 | 湖南匡楚科技有限公司 | A kind of road repair composite material and preparation method prepared using waste and old sole |
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Application publication date: 20090107 |