CN105601248A - Material for assembled simply supported hollow plate bridge hinge joint and application method of material - Google Patents

Material for assembled simply supported hollow plate bridge hinge joint and application method of material Download PDF

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Publication number
CN105601248A
CN105601248A CN201510990662.2A CN201510990662A CN105601248A CN 105601248 A CN105601248 A CN 105601248A CN 201510990662 A CN201510990662 A CN 201510990662A CN 105601248 A CN105601248 A CN 105601248A
Authority
CN
China
Prior art keywords
hinge seam
supported hollow
hollow slab
slab bridge
bridge hinge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510990662.2A
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Chinese (zh)
Inventor
杨全兵
陈勇
孙娜峰
吴方政
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Hangzhou Roadmender Technology Co Ltd
Original Assignee
Hangzhou Roadmender Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hangzhou Roadmender Technology Co Ltd filed Critical Hangzhou Roadmender Technology Co Ltd
Priority to CN201510990662.2A priority Critical patent/CN105601248A/en
Publication of CN105601248A publication Critical patent/CN105601248A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C04B28/34—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 cold phosphate binders
    • C04B28/344—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 cold phosphate binders the phosphate binder being present in the starting composition solely as one or more phosphates
    • 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
    • C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
    • C04B2111/00672—Pointing or jointing 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
    • C04B2111/72—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

Abstract

The invention discloses a material for an assembled simply supported hollow plate bridge hinge joint and an application method of the material. The material comprises phosphoric acid cement, a B2O3 introducing agent, a modifier and an additive. The hinge joint material disclosed by the invention can be used with water stirred together, is greatly superior to a compared material in compressive property, and is particularly relatively excellent in early-stage strength, bonding strength and anti-salt and anti-freezing property. In addition, the hinge joint material disclosed by the invention is high in material property matching with ordinary cement concrete, does not need special maintenance such as wetting with water and heating after being cast, can accelerate construction of bridges, and is beneficial for popularization and application.

Description

A kind of material and application process thereof for assembled freely-supported hollow slab bridge hinge seam
Technical field
The present invention relates to a kind of material and application process thereof for assembled freely-supported hollow slab bridge hinge seam, belong to the spy of construction materialPlant Material Field, can be widely used in newly-built hinge seam and damaged the hinge in the recovery project of stitching of assembled freely-supported hollow slab bridge.
Technical background
Ended for the end of the year 2010, highway in China bridge exceedes 650,000, the year two thousand twenty, and bridge sum will reach more than 80 ten thousand.In the bridge of One's name is legion, assembled freely-supported hollow slab bridge because it is simple in structure, easy construction, cost economic etc. be significantly excellentPoint, has become the most general bridge type of use in highway construction. According to Ministry of Communications's national national highway provincial highway bridge generaI investigation in 2007Data, in Bridges in Our Country, beam bridge accounts for 67.5% (hollow slab bridge accounts for 59.9%, T beam and accounts for 7.6%) of sum, the average bridge of bridgeBe about 15 years age, and wherein unsafe bridge quantity has reached 14.4% (9.35 ten thousand). In One's name is legion unsafe bridge, very largeA part causes because bridge superstructure is deteriorated. And the most general damage in the damage of assembled Supported Slab Bridge superstructureBad process is that hinge is sewn on first inefficacy under action of traffic loading, causes slab bridge load cross direction profiles inhomogeneous, and beam slab occurs " singlePlate is stressed " state, has significantly reduced the structural-load-carrying capacity of bridge, and then has caused other forms of damage. Pre-stress hollowThe real bridge destructive testing result of slab bridge shows, the process that the real bridge of slab bridge destroys for hinge seam cracking → side plate cracking → middle plate ftracture →Bent cap cracking → bearing cracking, has also further verified that hinge seam disease is for the huge harmfulness of bridge structure.
The reason of hinge seam disease is the horizontal coupling stiffness of hinge seam position or cuts with scissors adhesion strength and anti-salt between seam and bridge plateFreezing property (when spreading cryosel) deficiency, thus cause throwing off between hinge seam and bridge plate. For this reason, Bridge Design department is from initialLittle hinge seam is optimized for current large hinge seam, and has taked arrangement of reinforcement in large hinge seam, increase deck paving layer thickness to improve the layer of mating formationLoad diffusivity, and adopt the methods such as transverse prestress design to improve the load lateral transport ability of hinge seam. These are arrangedExecute the problem that has solved to a certain extent Supported Slab Bridge superstructure premature deterioration, still, transverse prestress design and increaseThe measures such as deck paving layer thickness have significantly increased construction cost, and hinge seam structure adjustment (size increases, Reasonable Reinforcement) etc.Measure is not satisfactory again for the engineering effort of alleviating hinge seam disease. The general problem of Supported Slab Bridge hinge seam disease has influence onThe selection of assembled freely-supported hollow slab bridge bridge type, put gradually in freely-supported bridge new construction middle girder cross section in some placesAbandon cored slab structure, and started the extensive higher box girder structure of construction costs that uses.
At present, still do not solve this problem from the performance perspective that improves hinge seam material. The present invention takes to improve hinge seam materialCan realize the technical thought that strengthens the horizontal concatenation ability of hinge seam position load as superelevation caking property, high strength, high-durability etc.,Having proposed a kind of material and application process thereof for assembled freely-supported hollow slab bridge hinge seam, is active service hollow slab bridge hinge seam diseasePunishment new technological means is provided, there is great social effect and distinct economic.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, propose a kind of material for assembled freely-supported hollow slab bridge hinge seamMaterial and application process thereof, this material, by unique material composition and proportioning, has excellent combination property and cost performance, energyEffectively solve a difficult problem for hollow slab bridge hinge seam disease.
The hollow slab bridge hinge seam material that the present invention proposes, comprises phosphate cement, B2O3Introduce agent, modifier and additive,Wherein said phosphate cement is generally ammonium magnesium phosphate cement; Described B2O3Introduce agent and be generally boric acid or borate; Described changingProperty agent can be that one or more in low calcium fly ash, nickel ground-slag, steel-making slag powder are compound, and specific area is 300～500m2/kg；Described additive is triterpenoid saponin material.
Phosphate cement, B in the present invention2O3The quality proportioning of introducing agent, modifier and additive is:
The present invention cut with scissors seam material preparation method as follows: phosphate cement, B2O3Introduce agent, modifier and additionalAgent is prepared in proportion, then in batch mixer, mixes 5～20 minutes, can obtain product of the present invention.
The present invention cuts with scissors the using method of seam material:
1. the same with Portland cement, will after hinge seam material, water, sand or sandstone stirring fully, can use in proportion,The recommendation of its water-cement ratio (water consumption/hinge seam quality of materials ratio) is 0.15～0.20;
2. for newly building bridge engineering, directly the hinge seam mortar being stirred or concreting are entered in reserved hinge seam hole, soAfter vibrate, floating can completion; To the hinge seam repairing work of built bridge, before construction, only need be the coagulation damagingSoil layer is removed and is cleaned out and can smear hinge seam material of the present invention, need not spread water on surface moistening;
3. while construction, should operate rapidly, and clean in time and stir apparatus;
4., after having constructed, the present invention cuts with scissors seam material does not need special curing as spread water and heating etc., according to requirement of engineering, and can be at 1～5hThe traffic of interior open bridge.
The present invention cuts with scissors seam material and has the following advantages and result of use:
1. intensity is high, development is fast, and later strength continues to increase;
2. the adhesion strength and between Portland cement concrete (PCC) is high, can compare favourably with epoxy resin;
3. setting time, adjustable extent was large, can in 5～60min, adjust as required;
4. match as thermal coefficient of expansion, elastic modelling quantity etc. with cement concrete wood property;
5. can open fast bridge traffic;
6. volume stability is high, drying shrinkage is very little;
7. very excellent frost resistance and deicer-scaling resistance performance, and the performance of good not corrosion of protection reinforcing bar;
8. good anti-stress fatigue ability.
Detailed description of the invention
Embodiment 1:
Described phosphate cement adopts ammonium magnesium phosphate cement, B2O3Employing boric acid is introduced, and modifier adopts low calcium fly ash, than tableArea is 300～500m2/ kg, additive is triterpenoid saponin material; When construction, when hinge is stitched material: water: sand=1:0.17:1 o'clock (mass ratio, lower same), its performance indications are shown in Table 1.
Embodiment 2:
Described phosphate cement adopts ammonium magnesium phosphate cement, B2O3Employing borate is introduced, and modifier adopts low calcium fly ash and steelThe mixture of ground-slag, specific area is 300～500m2/ kg, additive is triterpenoid saponin material; When construction, when hinge seam materialMaterial: water: when sand=1:0.17:1, its performance indications are shown in Table 1.
Embodiment 3:
Described phosphate cement adopts ammonium magnesium phosphate cement, B2O3Employing borate is introduced, and modifier adopts nickel ground-slag, specific surfaceAmassing is 300～500m2/ kg, additive is triterpenoid saponin material; When construction, when hinge is stitched material: water: sand=1:0.17:1Time, its performance indications are shown in Table 1.
Embodiment 4:
Described phosphate cement adopts ammonium magnesium phosphate cement, B2O3Employing boric acid is introduced, and modifier adopts low calcium fly ash, nickel slagThe mixture of powder and steel-making slag powder, specific area is 300～500m2/ kg, additive is triterpenoid saponin material; When construction, whenHinge seam material: water: when sand=1:0.17:1, its performance indications are shown in Table 1.
From table 1, can be clear that, compared with traditional portland cement base hinge seam material (contrast sample), the present invention's hingeThe combination property of seam material is obviously more excellent, the particularly early strength before 1d and deicer-scaling resistance performance, and and silicateAdhesion strength between cement concrete is especially outstanding.
Can obviously improve the present invention by the proportioning of optimization material and cut with scissors the performance of stitching material. By increasing B2O3Consumption,The operable time that the present invention cuts with scissors seam material be can obviously increase, but its intensity, particularly early strength reduced; Increase modificationThe consumption of agent, can obviously improve the present invention and cut with scissors fluidity or the workability of stitching material, and significantly reduce this its production cost,Be conducive to the large-scale promotion application that the present invention cuts with scissors seam material, but its intensity is in a slight decrease; The consumption that increases additive, can showThe salt that work reduction the present invention cuts with scissors seam material freezes the amount of peeling off, and significantly improves its deicer-scaling resistance performance, but its compression strength is hadReduction to a certain degree. Therefore,, according to the actual conditions requirement of field engineering, can obtain by adjusting these material parametersObtain the hinge seam material of cost performance optimum.
The Performance Ratio of the different proportioning hollow slab bridge hinge seam of table 1 material
Note: (1) *, contrast sample is traditional portland base hinge seam material, its match ratio is portland cement: water: sand: rubble=1:0.50:1.65:3.10,The intensity of its 3h, 1d and 7d is respectively the measured value of 3d, 7d and 28d; (2) sample dimensions is 4cm × 4cm × 16cm; (3) stickyKnotting strength is the adhesive bending strength between hinge seam material and cement concrete, and concrete mix is identical with contrast sample; (4) material is anti-Freezing property of salt index is levied with the scale that peels off of 30 freeze thawing circulation, and this value is lower, and its anti-freezing property of salt is higher, > 1.0kg.m-2Time defective;(5) F, T and S are respectively hinge seam material fluidity, operable time and salt freeze the amount of peeling off.

Claims (7)

1. for a material for assembled freely-supported hollow slab bridge hinge seam, it is characterized in that, comprise phosphoric acid salt solutionMud, B2O3Introduce agent, modifier and additive, the quality proportioning of its component is:
2. the material for assembled freely-supported hollow slab bridge hinge seam according to claim 1, its feature existsIn, described phosphate cement is ammonium magnesium phosphate cement.
3. the material for assembled freely-supported hollow slab bridge hinge seam according to claim 1, its feature existsIn, described B2O3Introducing agent is boric acid or borate.
4. the material for assembled freely-supported hollow slab bridge hinge seam according to claim 1, its feature existsBe that one or more in low calcium fly ash, nickel ground-slag, steel-making slag powder are compound in, described modifier, it is than tableArea is 300～500m2/kg。
5. the material for assembled freely-supported hollow slab bridge hinge seam according to claim 1, its feature existsIn, described additive is triterpenoid saponin material.
6. the method that the material of application as described in claim 1-5 any one constructed, is characterized in that,Before building, without moistening to place to be onstructed watering, directly will cut with scissors seam material, water, sand or sandstone stirring and form mixedSolidifying soil, builds in hinge seam, vibrates, floating, and completion.
7. construction method according to claim 6, is characterized in that, described water and hinge seam materialMass ratio is 0.15～0.20.
CN201510990662.2A 2015-12-24 2015-12-24 Material for assembled simply supported hollow plate bridge hinge joint and application method of material Pending CN105601248A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510990662.2A CN105601248A (en) 2015-12-24 2015-12-24 Material for assembled simply supported hollow plate bridge hinge joint and application method of material

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106630921A (en) * 2016-11-24 2017-05-10 杭州修路人科技股份有限公司 Novel high-performance water-permeable concrete cementing agent and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1415573A (en) * 2002-10-16 2003-05-07 同济大学 Patching material in ultra-tast for hard road
CN101381219A (en) * 2008-10-09 2009-03-11 上海交通大学 Phosphate fast repairing building material
CN103613297A (en) * 2013-10-24 2014-03-05 中国科学院青海盐湖研究所 Fast-setting early strength magnesium phosphate cement without additional retarder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1415573A (en) * 2002-10-16 2003-05-07 同济大学 Patching material in ultra-tast for hard road
CN101381219A (en) * 2008-10-09 2009-03-11 上海交通大学 Phosphate fast repairing building material
CN103613297A (en) * 2013-10-24 2014-03-05 中国科学院青海盐湖研究所 Fast-setting early strength magnesium phosphate cement without additional retarder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106630921A (en) * 2016-11-24 2017-05-10 杭州修路人科技股份有限公司 Novel high-performance water-permeable concrete cementing agent and preparation method thereof
CN106630921B (en) * 2016-11-24 2020-04-24 杭州修路人科技股份有限公司 High-performance pervious concrete cementing agent and preparation method thereof

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Application publication date: 20160525

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