CN101481236A - Rapid patching material for cement concrete pavement faulting of slab ends and patching method thereof - Google Patents
Rapid patching material for cement concrete pavement faulting of slab ends and patching method thereof Download PDFInfo
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- CN101481236A CN101481236A CNA200910103174XA CN200910103174A CN101481236A CN 101481236 A CN101481236 A CN 101481236A CN A200910103174X A CNA200910103174X A CN A200910103174XA CN 200910103174 A CN200910103174 A CN 200910103174A CN 101481236 A CN101481236 A CN 101481236A
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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
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
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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
- 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
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
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- Organic Chemistry (AREA)
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- Inorganic Chemistry (AREA)
- Road Repair (AREA)
Abstract
The invention discloses a rapid repairing material for table dislocation of a cement concrete road surface, which comprises cement, water, fine aggregate and styrene butadiene latex. The weight ratios of the ingredients are as following: the concrete cement in one cubic meter is less than or equal to 500 kg, the ratio of the water and the cement is from 0.3 to 0.36, the water content in the ratio of the water and the cement contains the water content in the styrene butadiene latex, the solid content in the styrene butadiene latex is 5 percent to 10 percent of the cement, the weight of the repairing material of one cubic meter is about 2400 kg, and the content of the fine aggregate is the weight difference obtained by subtracting the weight of the other ingredients from the total weight of the repairing material of one cubic meter. The invention also discloses a method for rapidly repairing the table dislocation of a cement concrete road surface. The invention has the following advantages that the strength can be rapidly increased, the traffic can be open in 12 hours, the contraction rate is low, and the thin layer repair with the height difference about 1 cm can be carried out.
Description
Technical field
The present invention relates to a kind of maintenance technology of cement concrete pavement, relate in particular to a kind of cement concrete pavement faulting of slab ends fast repairing material and method for repairing and mending thereof.
Background technology
Faulting of slab ends is the vertical discrepancy in elevation of seam or place, crack adjacent panels, is one of common disease of cement concrete pavement.Faulting of slab ends exists, and not only reduces comfortableness, the security of driving greatly, and along with the repeated stock effect of wheel load power, the cracking that will cause whole road deck, even occur crackedly, and and then influence transport by road efficient, cause tremendous economic loss and bad social influence.At present, adopt the method that polishes to handle the faulting of slab ends of the discrepancy in elevation less than 1.2cm; But it is that repairing efficiency is low that the method that polishes is handled the shortcoming of faulting of slab ends, and very easily causes the microfracture under the concrete processing panel, reduces slab strength.For the faulting of slab ends of the discrepancy in elevation, adopt tar sand, sand-cement slurry, epoxy mortar to repair greater than 1.2cm.The shortcoming of repairing with tar sand is that color is inharmonious, influence attractive in appearance, and yielding coming off; It is to repair the intensity height that epoxy resin mortar is repaired advantage, and adhesive property is good, and shortcoming is the construction process requirement height, the cost height; Sand-cement slurry desciccation crack very easily occurs because contraction is big, folding strength is low; And repair layer thickness is less than 4cm, easy to crack coming off under the vehicular load effect; Simultaneously, strength of cement mortar forms needs longer preserving period, and it is open to influence traffic.
Summary of the invention
The invention discloses a kind of cement concrete pavement faulting of slab ends fast repairing material, this patching material comprises cement, water, fine aggregate and styrene-butadiene latex; Weight ratio between each composition is: every cubic meter of concrete cement≤500kg; Water cement ratio is 0.3～0.36, and the water-content in the water cement ratio comprises the water-content in the styrene-butadiene latex; Solid content in the styrene-butadiene latex is cement 5-10%; The weight of every cubic metre of patching material is about 2400kg, and the content of fine aggregate is the weight difference that every cubic metre of patching material gross weight reduces other three kinds of components.
Add coarse aggregate in the patching material composition, the weight ratio of other composition is constant, and coarse aggregate adds that the total content of fine aggregate is the weight difference that every cubic metre of patching material gross weight reduces other three kinds of components, and sand coarse aggregate ratio is 30-36%.
Can add stablizer OP-10 and defoamer organic silicone oil in the making processes, be respectively 3% and 0.5% of styrene-butadiene latex volume.
Mix water reducer in patching material, the incorporation of water reducer is not more than 1% of cement weight.
Described cement is aluminosulfate cement.Described styrene-butadiene emulsion is a carboxylic styrene butadiene latex.Described fine aggregate is river sand or machine-processed sand, and its maximum particle diameter≤4.75mm, coarse aggregate are limestone gravel.
The invention also discloses a kind of cement concrete pavement faulting of slab ends fast repairing method, its processing step is: it is dark that the plate that 1) faulting of slab ends sunk cuts 20-30mm, repairing length is that the faulting of slab ends height is divided by the gradient, the gradient is 1%, 2), on repairing face, form the construction depth of 2～3mm at old concrete surface groove to be repaired; 3) face of cutting is carried out foreign material and handle and clean, but treat that the surface does not have the laggard capable interfacial agents brushing of water breakthrough; 4) brushing back is at the face of the cutting patching material that paves, and treats after the patching material final set maintenance one day; 5) seaming position to old pavement carries out joint-cutting, joint filling, and form removal, and faulting of slab ends is repaired and finished.
The cross section that cuts of faulting of slab ends sinking plate is a domatic, is higher than remote location near faulting of slab ends adjacent panels position.
Interfacial agents brushing thickness be advisable to fill up cutting, be 1-2mm; Novel concrete paves after 0.5～1 minute after the interfacial agents brushing.
Useful technique effect of the present invention is: gain in strength is fast, but 12 hours open to traffic, and shrinking percentage is low, can carry out the thin layer of discrepancy in elevation 1cm left and right sides faulting of slab ends and repair.
Description of drawings
Fig. 1 repairs synoptic diagram for faulting of slab ends;
Fig. 2 is the interface synoptic diagram behind the old concrete surface groove;
Fig. 3 shears synoptic diagram for interface shearing-resistance;
Fig. 4 concerns synoptic diagram for the bond length of time and cohesive strength;
Fig. 5 is the photo in kind after repairing;
Fig. 6 is each age strength of styrene-butadiene emulsion modification quick hardening sulphoaluminate cement concrete.
In the accompanying drawing, sinking plate 1, adjacent panels 2, cut cross section 3, F is an externally applied forces in the shear test.
Embodiment
Embodiment 1: one of cement concrete pavement faulting of slab ends fast repairing material---styrene-butadiene emulsion modification quick hardening sulphoaluminate cement mortar, and its moiety comprises cement, water, fine aggregate and styrene-butadiene latex; Weight ratio between each composition is: every cubic meter of concrete cement≤500kg; Water cement ratio is 0.3～0.36, and the water-content in the water cement ratio comprises the water-content in the styrene-butadiene latex; Solid content in the styrene-butadiene latex is cement 5-10%; The weight of every cubic metre of patching material is about 2400kg, and the content of fine aggregate is the weight difference that every cubic metre of patching material gross weight reduces other three kinds of components.
Embodiment 2: two of cement concrete pavement faulting of slab ends fast repairing material---styrene-butadiene emulsion modification quick hardening sulphoaluminate cement concrete, and its moiety comprises cement, water, fine aggregate, coarse aggregate and styrene-butadiene latex; Weight ratio between each composition is: every cubic meter of concrete cement≤500kg; Water cement ratio is 0.3～0.36, and the water-content in the water cement ratio comprises the water-content in the styrene-butadiene latex; Solid content in the styrene-butadiene latex is cement 5-10%; The weight of every cubic metre of patching material is about 2400kg, and coarse aggregate adds that the total content of fine aggregate is the weight difference that every cubic metre of patching material gross weight reduces other three kinds of components, and sand coarse aggregate ratio is that fine aggregate/(fine aggregate+coarse aggregate) is 30-36%.
According to the mix Design theory, rubble (coarse aggregate) replaces fine aggregate, is satisfying under the equal construction workability requirement, and water consumption descends to some extent, and water cement ratio will reduce.Therefore, the concrete intensity of styrene-butadiene emulsion modification quick hardening sulphoaluminate cement will improve, and contraction will reduce, and more help as patching material.
Figure 6 shows that the performance table of the concrete specific examples of styrene-butadiene emulsion modification quick hardening sulphoaluminate cement, the proportioning of the various components in this example is: quick hardening sulphoaluminate cement: water: sand: rubble: styrene-butadiene emulsion=1:0.22:1.4:2.7:0.2.
For above-mentioned two kinds of cement concrete pavement faulting of slab ends fast repairing materials, for preventing that whipping process from producing excessive aeration performance, in making processes, can add stablizer OP-10 and defoamer organic silicone oil, stablizer OP-10 is about 3% of styrene-butadiene latex volume, and the defoamer organic silicone oil is about 0.5% of styrene-butadiene latex volume.
According to different climatic conditions,, can in patching material, mix water reducer in right amount in order to satisfy concrete construction workability and 12 hours open to traffic demands.Because mixing of water reducer can produce adverse influence to concrete folding strength, therefore, the incorporation of water reducer is advisable to be not more than 1% of cement weight.
Described cement is aluminosulfate cement.Described styrene-butadiene emulsion is a carboxylic styrene butadiene latex.
Described fine aggregate is river sand or machine-processed sand, and its maximum particle diameter≤4.75mm, coarse aggregate are limestone gravel.
The salt cement mortar also can be made styrene-butadiene emulsion modification quick hardening sulphoaluminate cement concrete.
Styrene-butadiene latex solid content 5%～10% (is 10%～20% for this styrene-butadiene emulsion content) both can improve folding strength, crimping ratio, improved cement-based material fragility, and ultimate compression strength is descended too much; Consider workability and two factors of intensity, water cement ratio 0.3～0.36 (comprising emulsion institute water content).
If patching material adds coarse aggregate, can make styrene-butadiene emulsion modification quick hardening sulphoaluminate cement concrete.According to the mix Design theory, rubble replaces fine aggregate, is satisfying under the equal construction workability requirement, and water consumption descends to some extent, and water cement ratio will reduce.Therefore, the concrete intensity of styrene-butadiene emulsion modification quick hardening sulphoaluminate cement will improve, shrink and will reduce, and more help as patching material.
The present invention is the proportioning design of adopting orthogonal design to carry out, takes into account every performance index of having considered patching material.By test to every performance index, adopt patching material of the present invention, folding strength, the crimping ratio of material had both been improved, improved cement-based material fragility, ultimate compression strength is descended too much, also ensured the low-shrinkage (it is bigger slightly than adopting machine-processed sand to shrink to adopt river sand) of patching material.
According to JTG E30-2005 standard, pressure-proof elasticity modulus, curved elasticity modulus test, stress-strain test, load-deflection test, the durability test of drawing have also been carried out.
Its modulus of being hit by a bullet adopts the nonmetal ultrasonic test analyser of NM-4A, and test-results shows, adopts patching material of the present invention, and Young's modulus obviously reduces, and it is nearly 30% that the modulus of especially moving descends, and shows that this material stiffness is lower.
With 100mm * 100mm * 400mm test specimen, foil gauge is attached to the concrete base mid-way, and is connected with computer by the strain inductor block.Test-results shows that the concrete deformation ability significantly improves, and its toughness obviously improves.
Estimate the weather resistance of patching material by freeze-thaw damage, adopt 200 times after the freezing and thawing test test specimen loss of strength rate and rate of weight loss as durability index.Test specimen is the cubes concrete of 100mm * 100mm * 100mm in the test, and be 28 days the length of time, and test specimen keeps being not less than 4 hours under-15 ℃～-20 ℃ conditions as requested, melts then to be not less than 4 hours in water.Test-results shows that patching material of the present invention has better endurance quality.
The invention also discloses a kind of cement concrete pavement faulting of slab ends fast repairing method, its processing step is: it is dark that the plate 1 that 1) faulting of slab ends sunk cuts 20-30mm, repairing length is that the faulting of slab ends height is divided by the gradient, the gradient is 1%, the cross section 3 that cuts of faulting of slab ends sinking plate 1 is domatic, is higher than remote location (as Fig. 1) near faulting of slab ends adjacent panels 2 positions; 2), on repairing face, form the construction depth (as Fig. 2) of 2～3mm at old concrete surface groove to be repaired; 3) face of cutting is carried out that foreign material are handled and cleans, if conditions permit can wash with high pressure water, if there is not high pressure water available air compressor clean, and with the water-wet surface of cleaning cutting top blast.Treat that but the surface does not have the laggard capable interfacial agents brushing of water breakthrough, interfacial agents brushing thickness be advisable to fill up cutting, be 1-2mm; 4) 0.5～1 minute (the concrete time decide according to construction temperature) paves, wipes one's face and the plucking related process is carried out with reference to the requirement of normal concrete construction technique normalizing afterwards at the face of the cutting patching material that paves after the interfacial agents brushing; After concrete paving finishes, in time adopt water-filled boiler protection, in time cover straw bag after the final set, and will evenly water every several hrs, keep wet, maintenance one day prevents desciccation crack.5) after thin-lift concrete ultimate compression strength reaches 25MPa, promptly can carry out joint-cutting, joint filling to the seaming position of old pavement, and form removal, after reaching 4.0MPa, the thin-lift concrete folding strength gets final product open to traffic.
Styrene-butadiene emulsion modified sulphur aluminate cement mortar is applicable to that the discrepancy in elevation is cement concrete pavement faulting of slab ends or the repairing of other cement concrete pavement disease thin layer of 1～3cm, and styrene-butadiene emulsion modified sulphur aluminate cement concrete is applicable to that the discrepancy in elevation is greater than 3cm cement concrete pavement faulting of slab ends or the quite cement concrete pavement disease punishment of thickness.
Adopt cement-based material to carry out faulting of slab ends and repair, effect depends primarily on cohesive strength between the new-old concrete interface.By simultaneous test, utilize styrene-butadiene emulsion modified sulphur aluminate cement mortar to repair, interfacial agents should adopt quick hardening sulphoaluminate cement to starch only, water cement ratio about 0.36.
Referring to interface double shear shearing test synoptic diagram shown in Figure 3, with cutting machine at the old concrete surface groove, adopt sand replacement method to measure the rough interface degree, reflect the size of adhesive surface degree of roughness, see Fig. 2 with the ratio of filling standard sand volume and adhesive surface area.When construction depth 2mm～3mm, cohesive strength the best.
To satisfy the old concrete water-wet adhesive surface that roughness requires before the bonding strength test, but after treating that the surface does not have water breakthrough, brushing one deck interfacial agents, thickness is advisable just to fill up cutting, approximately 1mm～2mm; Then this test specimen die trial central authorities of packing into, repair with styrene-butadiene emulsion modified sulphur aluminate cement mortar complete, after the maintenance according to the shearing resistance shearing test of carrying out shown in Figure 3.
The new-old concrete cohesive strength improves with the prolongation in the bonding length of time, sees Fig. 4.The interface binding intensity initial stage increases very fast, increases hardly after the 14 day length of time.With the 12 hour length of time be benchmark, the Mechanics Performance of Adherence of New intensity of 24h, 3d, 7d, 14d, 28d and 60d has improved 34.89%, 49.23%, 61.83%, 68.22%, 71.50% and 72.19% respectively.
Claims (10)
1, a kind of cement concrete pavement faulting of slab ends fast repairing material, it is characterized in that: this patching material comprises cement, water, fine aggregate and styrene-butadiene latex; Weight ratio between each composition is: every cubic meter of concrete cement≤500kg; Water cement ratio is 0.3～0.36, and the water-content in the water cement ratio comprises the water-content in the styrene-butadiene latex; Solid content in the styrene-butadiene latex is cement 5-10%; The weight of every cubic metre of patching material is about 2400kg, and the content of fine aggregate is the weight difference that every cubic metre of patching material gross weight reduces other three kinds of components.
2, cement concrete pavement faulting of slab ends fast repairing material according to claim 1, it is characterized in that: in the patching material composition, add coarse aggregate, the weight ratio of other composition is constant, coarse aggregate adds that the total content of fine aggregate is the weight difference that every cubic metre of patching material gross weight reduces other three kinds of components, and sand coarse aggregate ratio is 30-36%.
3, cement concrete pavement faulting of slab ends fast repairing material according to claim 1 and 2 is characterized in that: can add stablizer OP-10 and defoamer organic silicone oil in the making processes, be respectively 3% and 0.5% of styrene-butadiene latex volume.
4, cement concrete pavement faulting of slab ends fast repairing material according to claim 1 and 2 is characterized in that: mix water reducer in patching material, the incorporation of water reducer is not more than 1% of cement weight.
5, cement concrete pavement faulting of slab ends fast repairing material according to claim 1 is characterized in that: described cement is aluminosulfate cement; Described styrene-butadiene emulsion is a carboxylic styrene butadiene latex.
6, cement concrete pavement faulting of slab ends fast repairing material according to claim 1 is characterized in that: described fine aggregate is river sand or machine-processed sand, and its maximum particle diameter≤4.75mm, coarse aggregate are limestone gravel.
7, a kind of cement concrete pavement faulting of slab ends fast repairing method, it is characterized in that: its processing step is: it is dark that the plate (1) that 1) faulting of slab ends sunk cuts 20-30mm, repairing length is that the faulting of slab ends height is divided by the gradient, the gradient is 1%, 2), on repairing face, form the construction depth of 2～3mm at old concrete surface groove to be repaired; 3) face of cutting is carried out foreign material and handle and clean, but treat that the surface does not have the laggard capable interfacial agents brushing of water breakthrough; 4) brushing back is at the face of the cutting patching material that paves, and treats after the patching material final set maintenance one day; 5) seaming position to old pavement carries out joint-cutting, joint filling, and form removal, and faulting of slab ends is repaired and finished.
8, cement concrete pavement faulting of slab ends fast repairing method according to claim 7 is characterized in that: the cross section (3) that cuts of faulting of slab ends sinking plate (1) is a domatic, is higher than remote location near faulting of slab ends adjacent panels (2) position.
9, cement concrete pavement faulting of slab ends fast repairing method according to claim 7 is characterized in that: interfacial agents brushing thickness be advisable to fill up cutting, be 1-2mm.
10, cement concrete pavement faulting of slab ends fast repairing method according to claim 7 is characterized in that: the time of the novel concrete that paves in the step 3) is after the interfacial agents brushing 0.5～1 minute.
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| CNA200910103174XA CN101481236A (en) | 2009-02-12 | 2009-02-12 | Rapid patching material for cement concrete pavement faulting of slab ends and patching method thereof |
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| CNA200910103174XA CN101481236A (en) | 2009-02-12 | 2009-02-12 | Rapid patching material for cement concrete pavement faulting of slab ends and patching method thereof |
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| CN102219437A (en) * | 2011-05-11 | 2011-10-19 | 邓敬森 | Cement concrete material for rapid repairing of road and preparation method thereof |
| CN102584149A (en) * | 2012-01-12 | 2012-07-18 | 中煤建筑安装工程公司 | Quick-setting cement mortar and preparation method for quick-setting cement mortar |
| CN104193406A (en) * | 2014-08-27 | 2014-12-10 | 天津大学 | Repair method of construction engineering reinforced concrete structure |
| CN104446242A (en) * | 2014-11-17 | 2015-03-25 | 长安大学 | Anti-skid cement mortar for tunnel pavement and preparation method thereof |
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| 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 |
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| CN107721328A (en) * | 2017-09-15 | 2018-02-23 | 广西交通科学研究院有限公司 | Cement concrete pavement locally changes plate with quick be open to traffic patching material and construction method |
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| CN104193406B (en) * | 2014-08-27 | 2016-05-18 | 天津大学 | A kind of method for repairing and mending of architectural engineering reinforced concrete structure |
| CN104193406A (en) * | 2014-08-27 | 2014-12-10 | 天津大学 | Repair method of construction engineering reinforced concrete structure |
| CN104446242B (en) * | 2014-11-17 | 2016-06-29 | 长安大学 | A kind of tunnel road surface antiskid cement mortar and preparation method thereof |
| CN104446242A (en) * | 2014-11-17 | 2015-03-25 | 长安大学 | Anti-skid cement mortar for tunnel pavement and preparation method thereof |
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| CN104973838A (en) * | 2015-07-16 | 2015-10-14 | 济南青科工程技术咨询有限公司 | Concrete for construction engineering drainage pipeline reserved hole plugging |
| CN105837110A (en) * | 2016-03-21 | 2016-08-10 | 中国长江三峡集团公司 | Artificial repair material for overhanging surface and construction method thereof |
| CN105948564A (en) * | 2016-05-09 | 2016-09-21 | 济南大学 | Cement concrete water reducing agent suitable for machine-made sand |
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| 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 |
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| CN110003724A (en) * | 2019-02-25 | 2019-07-12 | 薛银福 | A kind of strong concrete interfacial agents and preparation method thereof |
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| JP2022158954A (en) * | 2021-04-01 | 2022-10-17 | 中鉄北京工程局集団有限公司 | Quick-drying high-early-strength concrete suitable for rapid repair of pavement slab and production method thereof |
| CN113295484A (en) * | 2021-04-21 | 2021-08-24 | 重庆交通大学 | Method for manufacturing concrete test piece for simulating water-containing cavity defect |
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