CN108358564A - A kind of high ductility cement-base composite material and preparation method thereof - Google Patents

A kind of high ductility cement-base composite material and preparation method thereof Download PDF

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Publication number
CN108358564A
CN108358564A CN201810449462.XA CN201810449462A CN108358564A CN 108358564 A CN108358564 A CN 108358564A CN 201810449462 A CN201810449462 A CN 201810449462A CN 108358564 A CN108358564 A CN 108358564A
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Prior art keywords
cement
water
fiber
amount per
base composite
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CN201810449462.XA
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华渊
韩世诚
刘丛亮
连俊英
张聪
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Jiangnan University
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Jiangnan University
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034Physico-chemical characteristics of the mixtures
    • C04B2111/00146Sprayable or pumpable mixtures
    • C04B2111/00155Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries

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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)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

The invention discloses a kind of high ductility cement-base composite materials and preparation method thereof, are made of the cement, flyash, clean thin river sand, rubber powder, fiber, water-reducing agent, latex powder, accelerator and the water that centainly match.The high ductility cement-base composite material of the present invention, because having higher energy to failure and ultimate tensile strength, outstanding anti-crack ability, adjustable four-point bending toughness index, rational compression strength, the gunite concrete material that can be used in deep coal mine roadway support structural system can be used for the gunite concrete material in railway engineering, highway engineering mountain tunnel especially large deformation tunnel and serious unsymmetrial loading tunnel preliminary bracing.

Description

A kind of high ductility cement-base composite material and preparation method thereof
Technical field
The present invention relates to civil engineering material and preparing technical fields, more particularly to a kind of high ductility cement base composite wood Material and preparation method thereof.
Background technology
The coal mine deep well tunnel in China generally uses bolt-mesh-spurting supporting, Bolt net and jet+cable bolting, Bolt net and jet+beam+anchor The combined supportings mode such as rope supporting.Gunite concrete employed in these support patterns is by cement, coarse-fine aggregate, water, rapid hardening Agent forms, and is commonly injected with form in dry spray, tide spray and wet shot etc. three.The major defect of this traditional gunite concrete is Tensile strength is low, ductility is small, poor toughness etc., in the Bracing Process to the deep-well tunnel country rock with Nonlinear Large Deformation feature In, shotcrete layer and country rock occur not coupling in rigidity, deformation, cannot make the abundant release of country rock, lead to local spray-up There is stress concentration, induces phenomena such as spray-up occurs to early cracking, falls off, weaken or even lose the closing to country rock and surface Support action, due to cracking or falling off so that the globality of supporting construction is lost, and the effect of combined supporting can not be formed.Railway Weak, broken, joints development the tunnel of the mountain tunnel of engineering, highway engineering etc., especially country rock and serious unsymmetrial loading tunnel, are opened There is Nonlinear Large Deformation feature, conventional spray concrete often results in just because of the compatibility of deformation wretched insufficiency with scar after digging Phase branch sheath cracking, staggered floor are even whole to fall off, and the closing of preliminary bracing and protective function is made to can not achieve.Therefore, be badly in need of be Deep-well tunnel supporting and large deformation tunnel, which are developed, a kind of meets that intensity and ductility is high, material of good toughness replaces normal concrete spray Layer is used as supporting construction, improves the reliability of supporting construction, enhances safety.
Invention content
Present invention aims at the defect for gunite concrete material, a kind of energy to failure is provided and ultimate tensile strength is high, Anti-crack ability is strong, and four-point bending toughness index is adjustable, and compression strength meets preliminary bracing requirement, excellent with scar compatibility of deformation High ductility cement-base composite material and preparation method.
The present invention to achieve the above object, adopts the following technical scheme that:A kind of high ductility cement-base composite material, by water Mud, flyash, clean thin river sand, rubber powder, fiber, water-reducing agent, latex powder, accelerator and water composition;The cement unit bodies Product dosage is 420 ~ 630Kg/m3, the flyash Amount per unitvolume is 420 ~ 630Kg/m3, the clean thin river sand unit bodies Product dosage is 517 ~ 700Kg/m3, the rubber powder Amount per unitvolume is 34 ~ 66Kg/m3, the fiber Amount per unitvolume is 31~44.2Kg/m3, the latex powder Amount per unitvolume is 6.3 ~ 8.4Kg/m3, the water-reducing agent Amount per unitvolume be 2.1 ~ 10.5Kg/m3, the accelerator is that unit volumetric usage is 63 ~ 84Kg/m3, water-cement ratio 0.36, the glue sand when fiber is PVA Than being 0.49, when fiber is PP, cement mortar rate is 0.70;Rubber powder is incorporated into cement base as the substituent of the clean river sand in part In composite material.
Further, the cement is Portland cement, strength grade 42.5MPa;Flyash is I grades of fine coal Ash;Clean thin river sand is that maximum particle diameter is no more than 1.18mm, fineness modulus 1.0, the common river sand washed with water;Rubber powder is 40 The not surface treated rubber powder of mesh of mesh ~ 80;Latex powder is dispersible ethylene-vinyl acetate copolymer (EVA);Water-reducing agent is Polycarboxylate dehydragent, solid content 20%, water-reducing rate are 20%~30%;Accelerator is alkali-free liquid accelerator;Water is clean Drinking water or tap water.
Further, the fiber is polyvinyl alcohol(PVA)Fiber or polypropylene(PP)Fiber, the polyvinyl alcohol (PVA)1200 ~ 1500MPa of fibre tensile strength, 39 μm of equivalent diameter, density 1.3g/cm3, Amount per unitvolume be 18.3 ~ 26.0Kg/m3;The polypropylene(PP)Fiber, 400 ~ 650MPa of tensile strength, 48 μm of equivalent diameter, density 0.91g/cm3, single Position volumetric usage is 12.7 ~ 18.2Kg/m3
A kind of preparation method of high ductility cement-base composite material, includes the following steps:By by load weighted cement, powder Coal ash, rubber powder, latex powder, clean thin river sand are poured into blender together, and mixing 2 ~ 3min of dry mixing is equal to a variety of materials mixing It is even;Then load weighted water and polycarboxylate dehydragent are uniformly mixed, mixed solution is poured into blender, stirring at low speed 3 ~ 4 min to slurry being capable of Uniform Flow;It is slowly added to fiber while stirring at low speed, 5 ~ 6 are quickly stirred after fiber is added Min obtains fresh paste;When in use by load weighted accelerator injection apparatus nozzle rear end by negative pressure of vacuum sucking with it is new Slurry mixing is mixed, the high ductility cement-base composite material of the present invention is obtained and sprays use.
Compared with prior art, what the present invention had has the beneficial effect that:The high ductility cement-base composite material of the present invention, because With higher energy to failure and ultimate tensile strength, outstanding anti-crack ability, adjustable four-point bending toughness index reasonably resists Compressive Strength, the gunite concrete material that can be used in deep coal mine roadway support structural system can be used for railway engineering, highway work The gunite concrete material in journey mountain tunnel especially large deformation tunnel and serious unsymmetrial loading tunnel preliminary bracing.
Specific implementation mode
With reference to specific embodiment, the present invention is described further.
Embodiment 1:A kind of high ductility cement-base composite material, by cement, flyash, clean thin river sand, rubber powder, Fiber, water-reducing agent, latex powder, accelerator and water composition;The cement Amount per unitvolume is 520Kg/m3, the flyash list Position volumetric usage is 520Kg/m3, the clean thin river sand Amount per unitvolume is 610Kg/m3, the rubber powder unit volume use Amount is 50Kg/m3, the fiber is polyvinyl alcohol(PVA)Fiber, Amount per unitvolume 38Kg/m3, the latex powder unit bodies Product dosage is 7.4Kg/m3, the water-reducing agent Amount per unitvolume is 6Kg/m3, the accelerator is that unit volumetric usage is 74Kg/m3, water-cement ratio 0.36, cement mortar rate 0.49.
Embodiment 2:A kind of high ductility cement-base composite material, by cement, flyash, clean thin river sand, rubber powder, Fiber, water-reducing agent, latex powder, accelerator and water composition;The cement Amount per unitvolume is 420Kg/m3, the flyash list Position volumetric usage is 420Kg/m3, the clean thin river sand Amount per unitvolume is 517Kg/m3, the rubber powder unit volume use Amount is 34Kg/m3, the fiber is polypropylene(PP)Fiber, Amount per unitvolume 31Kg/m3, the latex powder unit volume Dosage is 6.3Kg/m3, the water-reducing agent Amount per unitvolume is 2.1Kg/m3, the accelerator is that unit volumetric usage is 63Kg/m3, water-cement ratio 0.36, cement mortar rate 0.70.
Embodiment 3:A kind of high ductility cement-base composite material, by cement, flyash, clean thin river sand, rubber powder, Fiber, water-reducing agent, latex powder, accelerator and water composition;The cement Amount per unitvolume is 630Kg/m3, the flyash list Position volumetric usage is 630Kg/m3, the clean thin river sand Amount per unitvolume is 700Kg/m3, the rubber powder unit volume use Amount is 66Kg/m3, the fiber is polyvinyl alcohol(PVA)Fiber, Amount per unitvolume 44.2Kg/m3, the latex powder unit Volumetric usage is 8.4Kg/m3, the water-reducing agent Amount per unitvolume is 10.5Kg/m3, the accelerator is unit volumetric usage For 84Kg/m3, water-cement ratio 0.36, cement mortar rate 0.49.
Embodiment 4:A kind of high ductility cement-base composite material, by cement, flyash, clean thin river sand, rubber powder, Fiber, water-reducing agent, latex powder, accelerator and water composition;The cement Amount per unitvolume is 630Kg/m3, the flyash list Position volumetric usage is 420Kg/m3, the clean thin river sand Amount per unitvolume is 700Kg/m3, the rubber powder unit volume use Amount is 34Kg/m3, the fiber is polyvinyl alcohol(PVA)Fiber, Amount per unitvolume 44.2Kg/m3, the latex powder unit Volumetric usage is 6.3Kg/m3, the water-reducing agent Amount per unitvolume is 10.5Kg/m3, the accelerator is unit volumetric usage For 63Kg/m3, water-cement ratio 0.36, cement mortar rate 0.49.
Embodiment 5:A kind of high ductility cement-base composite material, by cement, flyash, clean thin river sand, rubber powder, Fiber, water-reducing agent, latex powder, accelerator and water composition;The cement Amount per unitvolume is 600Kg/m3, the flyash list Position volumetric usage is 500Kg/m3, the clean thin river sand Amount per unitvolume is 550Kg/m3, the rubber powder unit volume use Amount is 60Kg/m3, the fiber is polypropylene(PP)Fiber, Amount per unitvolume 40Kg/m3, the latex powder unit volume Dosage is 7Kg/m3, the water-reducing agent Amount per unitvolume is 8Kg/m3, the accelerator is that unit volumetric usage is 70Kg/m3, Water-cement ratio is 0.36, cement mortar rate 0.70
In above-described embodiment 1-5, cement is Portland cement, strength grade 42.5MPa;Flyash is I grades of flyash, Main chemical compositions are SiO2、Al2O3、Fe2O3、CaO、MgO、SO3、Na2O、K2O;Clean thin river sand is no more than for maximum particle diameter 1.18mm, fineness modulus 1.0, the common river sand washed with water;Rubber powder is the not surface treated rubber powder of mesh of 40 mesh ~ 80; Fiber is polyvinyl alcohol(PVA)Fiber or polypropylene(PP)Fiber, polyvinyl alcohol(PVA)Fibre tensile strength 1200 ~ 1500MPa, 39 μm of equivalent diameter, density 1.3g/cm3;Polypropylene(PP)400 ~ 650MPa of fibre tensile strength, equivalent diameter 48 μm, density 0.91g/cm3;Latex powder is dispersible ethylene-vinyl acetate copolymer (EVA);Water-reducing agent subtracts for polycarboxylate Aqua, solid content 20%, water-reducing rate are 20%~30%;Accelerator is alkali-free liquid accelerator;Water is for clean drinking water or certainly Water.
High ductility cement-base composite material described in embodiment 1-5 prepare in use, by will set quality cement, The materials such as flyash, rubber powder, latex powder, clean thin river sand pour into blender together after weighing, and 2 ~ 3min of mixing dry mixing is extremely A variety of materials are uniformly mixed;The water for setting quality and high-performance water reducing agent are uniformly mixed, then the mixed solution is poured into and is stirred It mixes in machine, 3 ~ 4 min of stirring at low speed to slurry being capable of Uniform Flow;It is slowly added to fiber while stirring at low speed, is added fine 5 ~ 6 min are quickly stirred after dimension;Fresh paste is packed into die trial, smooth out surface after vibratory compaction, form removal after indoor maintenance for 24 hours; Test specimen is carrying out standard curing(20 ± 2 DEG C, RH > 95%)Under the conditions of conserve 28 days and be made.When for deep-well tunnel or greatly When deformation tunnel gunite concrete material, accelerator is sucked by negative pressure of vacuum in nozzle rear end and is mixed with fresh paste, is sprayed Become preliminary bracing material on to scar.
After tested, the compression strength of high ductility cement-base composite material made from above-described embodiment 1-5 be 20.5 ~ 30.9MPa, ultimate tensile strength be 0.32% ~ 1.35%, energy to failure be 1.08 ~ 4.93J, four-point bending toughness index be 30.0 ~ 108.0。
It should be noted that embodiment described above is only several specific embodiments of the present invention, but can not be because This is interpreted as the limitation to the scope of the claims of the present invention.For those skilled in the art, think of of the present invention is not being departed from Several differentiation or improvement made under the premise of road, belong to protection scope of the present invention.

Claims (4)

1. a kind of high ductility cement-base composite material, it is characterised in that:By cement, flyash, clean thin river sand, rubber powder, fibre Dimension, water-reducing agent, latex powder, accelerator and water composition;The cement Amount per unitvolume is 420 ~ 630Kg/m3, the flyash Amount per unitvolume is 420 ~ 630Kg/m3, the clean thin river sand Amount per unitvolume is 517 ~ 700Kg/m3, the rubber powder Amount per unitvolume is 34 ~ 66Kg/m3, the fiber Amount per unitvolume is 31 ~ 44.2Kg/m3, the latex powder unit volume Dosage is 6.3 ~ 8.4Kg/m3, the water-reducing agent Amount per unitvolume is 2.1 ~ 10.5Kg/m3, the accelerator is unit volume Dosage is 63 ~ 84Kg/m3;Water-cement ratio is 0.36, and cement mortar rate is 0.49 or 0.70;Glue in the water-cement ratio and cement mortar rate is The gelling agent being made of cement and flyash, sand are clean thin river sand.
2. a kind of high ductility cement-base composite material according to claim 1, it is characterised in that:The cement is common Portland cement, strength grade 42.5MPa;Flyash is I grades of flyash;Clean thin river sand is no more than for maximum particle diameter 1.18mm, fineness modulus 1.0, the common river sand washed with water;Rubber powder is the not surface treated rubber powder of mesh of 40 mesh ~ 80; Latex powder is dispersible ethylene-vinyl acetate copolymer (EVA);Water-reducing agent is polycarboxylate dehydragent, solid content 20%, Water-reducing rate is 20%~30%;Accelerator is alkali-free liquid accelerator;Water is the drinking water or tap water of cleaning.
3. a kind of high ductility cement-base composite material according to claim 1, it is characterised in that:The fiber is poly- second Enol(PVA)FiberOrPolypropylene(PP)Fiber, the polyvinyl alcohol(PVA)1200 ~ 1500MPa of fibre tensile strength, equivalent 39 μm of diameter, density 1.3g/cm3, Amount per unitvolume is 18.3 ~ 26.0Kg/m3;The polypropylene(PP)Fiber, tensile strength 400 ~ 650MPa, 48 μm of equivalent diameter, density 0.91g/cm3, Amount per unitvolume is 12.7 ~ 18.2Kg/m3;When fiber is poly- Vinyl alcohol(PVA)Cement mortar rate is 0.49 when fiber, when fiber is polypropylene(PP)Cement mortar rate is 0.70 when fiber.
4. a kind of preparation method of high ductility cement-base composite material, which is characterized in that include the following steps:By that will weigh Good cement, flyash, rubber powder, latex powder, clean thin river sand are poured into together in blender, and mixing 2 ~ 3min of dry mixing is to various Material is uniformly mixed;Then load weighted water and polycarboxylate dehydragent are uniformly mixed, mixed solution are poured into blender, 3 ~ 4 min of stirring at low speed to slurry being capable of Uniform Flow;It is slowly added to fiber while stirring at low speed, is added after fiber quickly 5 ~ 6 min of stirring obtain fresh paste;Load weighted accelerator is passed through into negative pressure of vacuum in injection apparatus nozzle rear end when in use Sucking is mixed with fresh paste, is obtained the high ductility cement-base composite material of the present invention and is sprayed use.
CN201810449462.XA 2018-05-11 2018-05-11 A kind of high ductility cement-base composite material and preparation method thereof Pending CN108358564A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109942257A (en) * 2019-04-24 2019-06-28 山东省交通规划设计院 A kind of road superhigh tenacity cement-base composite material and its preparation method and application
CN110606702A (en) * 2019-08-28 2019-12-24 维特国际新材料(武汉)有限公司 Bridge self-repairing paving method based on cement-based composite material
CN111362646A (en) * 2018-12-26 2020-07-03 江苏苏博特新材料股份有限公司 Low-elastic-modulus flexible ultrahigh-toughness mortar concrete system and preparation method thereof
CN111548075A (en) * 2020-06-11 2020-08-18 陕西拉发纪新材料科技有限公司 Guniting material suitable for surface treatment of stone coal mine tunnel and preparation method thereof
CN112983479A (en) * 2021-02-23 2021-06-18 陕西煤业化工技术研究院有限责任公司 Roadway surrounding rock sealing protection method
CN113149555A (en) * 2021-04-21 2021-07-23 河南省宜居建材科技有限公司 Sprayed concrete for roadway
CN113213835A (en) * 2021-04-28 2021-08-06 青岛科技大学 Application of filling material containing tailings and waste tire rubber filaments in yielding support of underground chamber
CN113620662A (en) * 2021-08-04 2021-11-09 业之固工程技术(苏州)有限公司 Ultrahigh-toughness cement-based composite material
CN114634338A (en) * 2022-03-09 2022-06-17 石河子大学 High-ductility cement-based composite material for wind-blown sand in desert and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5569651A (en) * 1978-11-18 1980-05-26 Japanese National Railways<Jnr> Fiber-reinforced cement asphalt mixture
CN103508705A (en) * 2013-08-30 2014-01-15 江南大学 Ejection type ductile PP fiber strengthened cement base composite material and preparation method thereof
CN103664069A (en) * 2013-08-30 2014-03-26 江南大学 Injection-type fiber-reinforced cement-based composite material with high ductility

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5569651A (en) * 1978-11-18 1980-05-26 Japanese National Railways<Jnr> Fiber-reinforced cement asphalt mixture
CN103508705A (en) * 2013-08-30 2014-01-15 江南大学 Ejection type ductile PP fiber strengthened cement base composite material and preparation method thereof
CN103664069A (en) * 2013-08-30 2014-03-26 江南大学 Injection-type fiber-reinforced cement-based composite material with high ductility

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王占龙等: "橡胶粉粒度和掺量的不同对ECC性能的影响", 《山西建筑》 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111362646A (en) * 2018-12-26 2020-07-03 江苏苏博特新材料股份有限公司 Low-elastic-modulus flexible ultrahigh-toughness mortar concrete system and preparation method thereof
CN109942257A (en) * 2019-04-24 2019-06-28 山东省交通规划设计院 A kind of road superhigh tenacity cement-base composite material and its preparation method and application
CN110606702A (en) * 2019-08-28 2019-12-24 维特国际新材料(武汉)有限公司 Bridge self-repairing paving method based on cement-based composite material
CN111548075A (en) * 2020-06-11 2020-08-18 陕西拉发纪新材料科技有限公司 Guniting material suitable for surface treatment of stone coal mine tunnel and preparation method thereof
CN112983479A (en) * 2021-02-23 2021-06-18 陕西煤业化工技术研究院有限责任公司 Roadway surrounding rock sealing protection method
CN113149555A (en) * 2021-04-21 2021-07-23 河南省宜居建材科技有限公司 Sprayed concrete for roadway
CN113213835A (en) * 2021-04-28 2021-08-06 青岛科技大学 Application of filling material containing tailings and waste tire rubber filaments in yielding support of underground chamber
CN113620662A (en) * 2021-08-04 2021-11-09 业之固工程技术(苏州)有限公司 Ultrahigh-toughness cement-based composite material
CN114634338A (en) * 2022-03-09 2022-06-17 石河子大学 High-ductility cement-based composite material for wind-blown sand in desert and preparation method thereof

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