CN107023211A - A kind of ultra-high performance concrete electric pole containing composite fibre - Google Patents
A kind of ultra-high performance concrete electric pole containing composite fibre Download PDFInfo
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- CN107023211A CN107023211A CN201710446330.7A CN201710446330A CN107023211A CN 107023211 A CN107023211 A CN 107023211A CN 201710446330 A CN201710446330 A CN 201710446330A CN 107023211 A CN107023211 A CN 107023211A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
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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
- C04B28/04—Portland cements
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- 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
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Abstract
The present invention relates to a kind of ultra-high performance concrete electric pole containing composite fibre, the ultra-high performance concrete electric pole includes the hollow rod body with sandwich construction, and the sandwich construction includes the first composite bed, the second composite bed and the triplex layer being sequentially coaxially distributed from inside to outside；First composite bed is the vinal composite bed being made using the ultra-high performance concrete containing vinal；Second composite bed is the carbon fiber composite bed being made using the ultra-high performance concrete of carbon fiber-containing；The triplex layer is the steel fibre composite bed being made using the ultra-high performance concrete containing steel fibre.Compared with prior art, the present invention there is tensile strength height, it is service life length, wide, safe using scope.
Description
Technical field
The present invention relates to converting electricity field, more particularly, to a kind of ultra-high performance concrete electricity containing composite fibre
Bar.
Background technology
At present, the most of electric poles of China are generally that the normal concrete for being configured with framework of steel reinforcement is made, and small part is using wood
Electric pole processed, and start progressively to use the electric pole of ultra-high performance concrete.
But, the normal concrete electric wire club body concrete strength for being configured with framework of steel reinforcement is not high, especially common mixed
The tensile strength for coagulating soil is relatively low.When circuit is longer, act on electric pole termination eccentric force it is very big when, easily there is drawing crack and broken in shaft
It is bad, cause its durability poor, to the repairing in later stage, replacement brings many troubles, also causes very big to economy, material resources, manpower
Pressure.Also, due to needing assembling reinforcement before the forming, not only cause that the quality of common electric pole is big, operational procedure is cumbersome, takes
When it is laborious.Because it is from great, when the location of electric pole is in the not convenient area such as mountain area, the transport of electric pole, peace
Dress will have very big difficulty.
In addition, wooden pole is lightweight, set up convenient, the load-bearing of some circuits such as telephone wire and pulling force are small, rod
It can be competent at, if telephone line has change, move bar also very convenient.But, applicable timber is progressively rare, concrete wire pole outward appearance
Smooth and beautiful appearance, urban beautification of being more convenient for, but concrete wire pole is also perishable, and cause maintenance cost higher.
When only mixing fiber, it is more prone to for being centrifuged into tapered electric pole, and the use of tapered electric pole is to long-term
The area blown hard provides safer selection.
Although ultra-high performance concrete electric pole, which compares traditional concurrent or wooden electric pole, has more advantages, its
It is difficult to centrifugal forming, it is impossible to extensive, factorial praluction, thus current ultra-high performance concrete electric pole is frequently with die perfusion
Method.Even if in addition, UHPC can centrifugal forming, but because steel fibre density is big, steel fibre is mainly distributed on outer layer during shaping, when
When internal layer concrete cracking, outer layer steel fibre are extracted, electric pole loses bearing capacity soon.Therefore, find one kind and make simple, warp
Help, convenient and good stress performance electric pole of constructing, for improve China transmission of electricity cause it is significant.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of containing composite fibre
Ultra-high performance concrete electric pole.By that can surpass its compression strength after increasing high efficiency water reducing agent, the control ratio of mud below 0.18
Cross 100MPa；Meanwhile, by centrifuging moulding, make three kinds（Steel fibre, carbon fiber, PVA）The distribution of composite fibre is more normal than in building
UHPC is more distributed in order and respectively cement pole inner, middle and outer layer by the difference of its density, is improved with carrying so as to more significant
Its tensile strength.The ultra-high performance concrete（UHPC）The raising of Tensile strength is remarkably improved the use effect of cement pole
Benefit.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of ultra-high performance concrete electric pole containing composite fibre, the ultra-high performance concrete electric pole is included with sandwich construction
Hollow rod body, the sandwich construction includes the first composite bed, the second composite bed and the triplex being sequentially coaxially distributed from inside to outside
Layer；
First composite bed is the vinal being made using the ultra-high performance concrete containing vinal
Composite bed；
Second composite bed is the carbon fiber composite bed being made using the ultra-high performance concrete of carbon fiber-containing；
The triplex layer is the steel fibre composite bed being made using the ultra-high performance concrete containing steel fibre.
The making raw material of first composite bed includes ultra-high performance concrete raw material and vinal, described second
The making raw material of composite bed includes ultra-high performance concrete raw material and carbon fiber, and the making raw material of the triplex layer includes surpassing
High performance concrete raw material and steel fibre；
Wherein, the ratio of mud is not more than 0.18 in ultra-high performance concrete raw material, and vinal accounts for the making of the first composite bed
Raw material mixing after cumulative volume 5.8 ~ 6.2%, carbon fiber account for the second composite bed make raw material mixing after cumulative volume 5.8 ~
6.2%, steel fibre accounts for make cumulative volume after raw material mixing the 5.8 ~ 6.2% of triplex layer.
The ultra-high performance concrete raw material includes cement, silica flour, fine sand, metakaolin, magnesia, water and efficient diminishing
Agent, wherein, cement, silica flour, fine sand, metakaolin, magnesia, the mass ratio of water and high efficiency water reducing agent are：0.8 ~ 1.2 ︰
The ︰ 0.01 ~ 0.014 of 0.23 ~ 0.27 ︰, 1 ~ 1.4 ︰, 0.08 ~ 0.12 ︰, 0.08 ~ 0.12 ︰ 0.2 ~ 0.24.
The cement is cement P .O 42.5；
The average grain diameter of the silica flour be 0.18 ~ 0.22 μm, SiO2 contents be more than or equal to 90%, specific surface area be 18.9 ~
18.94m2/ g, density is 1.8 ~ 2.2g/cm3；
The average grain diameter of the fine sand is not more than 0.63mm, and density is 2.4 ~ 2.8g/cm3；
The average grain diameter of the metakaolin is 10.64 ~ 10.68 um；
The average grain diameter of the magnesia is 72 ~ 76um；
The water-reducing rate of the high efficiency water reducing agent is more than 25%.
Radial thickness, the radial thickness of the second composite bed, the radial thickness ratio of triplex layer of first composite bed
Example is the ︰ 2.8 ~ 3.2 of 0.8 ~ 1.2 ︰ 1.8 ~ 2.2.
The hollow rod body is multistage, and multistage hollow rod body is from top to bottom set gradually, on the bottom of every section of hollow rod body
Ring flange is arranged with, the bottom external diameter of every section of hollow rod body is less than the top internal diameter of next section of hollow rod body, every section of hollow rod body
The ring flange of bottom be connected by bolt with the top end face of next section of hollow rod body, provided with buffering between the adjacent hollow body of rod
Pad, between the cushion pad is filled between the ring flange of the bottom of every section of hollow rod body and the top end face of next section of hollow rod body
Gap between the top inwall of the bottom outer wall and next section of hollow rod body of gap and every section of hollow rod body.
A kind of preparation method of the ultra-high performance concrete electric pole described above containing composite fibre, comprises the following steps：
S1：Polishing centrifuge inwall, corrects sample dimensions, coating release agent；
S2：Cement, silica flour, fine sand, metakaolin, magnesia and the vinal that amount is weighed up successively pour into agitated kettle,
Dry mixing, then the moisture being well mixed with high efficiency water reducing agent is slowly added into stirring twice, obtain making the mixing of the first composite bed
Thing；
Vinal is replaced with into carbon fiber and steel fibre, using identical stirring means, obtain make the second composite bed and
The mixture of triplex layer；
S3：After three kinds of mixtures are weighed, layering from outside to inside is poured into centrifuge, using the closely knit shaping of centrifuging process；
S4：It is quiet after shaping to stop after setting time, carry out steam heating curing；
S5：Demoulding maintenance, obtains hollow rod body.
The detailed process of centrifuging process is in the step S3：With 1.4 ~ 1.8g of acceleration low speed rotation 2 ~ 4 minutes；With
6.1 ~ 6.5g of acceleration middling speed rotates 4 ~ 6 minutes；Rotated 4 ~ 6 minutes with 25 ~ 25.4g of acceleration high speed；With acceleration 6.1
~ 6.5g middling speed rotates 0.8 ~ 1.5 minute；With 1.4 ~ 1.8g of acceleration low speed rotation 0.8 ~ 1.5 minute.
The rotating speed of low speed is 80 ~ 100r/min；The rotating speed of middling speed is 170 ~ 190r/min；The rotating speed of high speed be 350 ~
370r/min。
It is the ︰ 34 ~ 38 of 7 ~ 11 ︰ 13 ~ 17 that three kinds of mixtures, which weigh ratio, in the step S3.
Compared with prior art, the present invention has advantages below：
1. using the ultra-high performance concrete for mixing composite fibre of above-mentioned technical proposal（UHPC）Electric pole, is less than reinforcing bar with density
Composite fibre replace traditional vertical muscle, not only keep electric pole bending resistance on the basis of reduce the ratio of reinforcement, and
Compensate for traditional electric pole because of the cumbersome technique of assembling reinforcement and the big ratio of reinforcement and caused by from great shortcoming.It is not added with reinforcing bar
Cage, eliminates steel bar meter and fabrication of reinforcing cage process, the protective layer thickness problem without considering vertical muscle in electric pole, hence it is evident that reduce
Time that electric pole makes.
2. using the ultra-high performance concrete for mixing composite fibre of above-mentioned technical proposal（UHPC）Electric pole shaft uses superelevation
Performance concrete is poured, and it has high intensity, high-durability and improved corrosion performance, is avoided that electric wire club body due to collision etc.
Physical factor and the problem of ftracture and common wiring bar and rigid steel conduit bar cause perishable due to chemical factor
Problem, reduces the high cost of maintenance.
3. using the ultra-high performance concrete for mixing composite fibre of above-mentioned technical proposal（UHPC）Electric pole due to by three kinds not
With steel fibre mixture stirring is newly mixed with UHPC respectively, it is to avoid the problem of fibrous caking, enable the fiber preferably along electric pole
Genesis analysis.The different fiber fractionation distribution of three kinds of density can more uniformly increase the ductility of electric pole cross section.
4. using the ultra-high performance concrete for mixing composite fibre of above-mentioned technical proposal（UHPC）Electric pole is due to two sections of diameters
Inconsistent electric pole connection, top shaft is smaller so reduce the consumption that its diameter saves concrete due to bearing moment of flexure, makes
The problem of being caused with rubber buffer with the significant portion reduction abrupt change of cross-section.And it on the one hand can buffer squeezing for two sections of shafts
Pressure, on the other hand for reducing between ring flange and hypomere shaft because of the fixation of bolt to the damage of concrete.
5. common electric pole can be made, it is adaptable to which different power networks are installed, compression strength may replace steel tower more than 100MPa, practical
Property is strong.
6. rationally the thickness proportion between three composite beds of design, improves the body of rod overall axial strength and ring intensity.
7. it can be used according to the actual requirements after being divided into two sections or multistage assembling, wider using scope, security is higher, makes
Service free is safeguarded during, and service life is long.
Brief description of the drawings
Fig. 1 is the hollow rod body schematic diagram after present invention shaping；
Fig. 2 is the hollow rod body cross-sectional view after shaping；
Fig. 3 is the connection profile of two sections of hollow rod bodies of different-diameter.
In figure：1st, hollow rod body, 2, triplex layer, the 3, second composite bed, the 4, first composite bed, 5, cushion pad, 6, spiral shell
Bolt, 7, ring flange, 8, nut.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment one
A kind of ultra-high performance concrete electric pole containing composite fibre includes the hollow rod body 1 with sandwich construction, the sandwich construction
Including the first composite bed 4, the second composite bed 3 and the triplex layer 2 being sequentially coaxially distributed from inside to outside, such as Fig. 1 and Fig. 2 institutes
Show；
First composite bed 4 is the polyvinyl alcohol being made using the ultra-high performance concrete containing vinal（PVA）It is fine
Tie up composite bed；
Second composite bed 3 is the carbon fiber composite bed being made using the ultra-high performance concrete of carbon fiber-containing；
Triplex layer 2 is the steel fibre composite bed being made using the ultra-high performance concrete containing steel fibre.
The making raw material of first composite bed 4 includes ultra-high performance concrete raw material and vinal, the second composite bed 3
Making raw material include ultra-high performance concrete raw material and carbon fiber, the making raw material of triplex layer 2 is mixed including very-high performance
Solidifying soil raw material and steel fibre；
Wherein, the ratio of mud is not more than 0.18 in ultra-high performance concrete raw material, and vinal accounts for the making of the first composite bed 4
The 6% of cumulative volume after raw material mixing, carbon fiber accounts for make cumulative volume after raw material mixing the 6% of the second composite bed 3, and steel fibre accounts for the
Make cumulative volume after raw material mixing the 6% of triplex layer 2.
Ultra-high performance concrete raw material is made up of following raw material：
Cement, the normal concrete acid salt cements of P .O 42.5；
Silica flour, average grain diameter is 0.20 μm, and SiO2 contents are more than or equal to 90%, and specific surface area is 18.92m2/ g, density is 2.0g/
cm3；
Fine sand, average grain diameter is not more than 0.63mm, and density is 2.6g/cm3；
Metakaolin, average grain diameter is 10.66 um；
Magnesia, average grain diameter is 74um, is used as catalyst；
Water, using ordinary tap water；
High efficiency water reducing agent, water-reducing rate is more than 25%；
The ratio of the quality of above-mentioned each material is：
The Shui Ni ︰ Gui Fen ︰ Xi Sha ︰ Pian Gao Ling Tu ︰ Yangization Mei ︰ Shui ︰ high efficiency water reducing agents=︰ of 1 ︰, 0.25 ︰, 1.2 ︰, 0.1 ︰, 0.1 ︰ 0.22
0.012。
A kind of preparation method of the ultra-high performance concrete electric pole described above containing composite fibre, comprises the following steps：
S1：Polishing centrifuge inwall, corrects sample dimensions, coating release agent；
S2：Cement, silica flour, fine sand, metakaolin, magnesia and the vinal that amount is weighed up successively pour into agitated kettle,
Pot cover, dry mixing 4-6min are covered, then the moisture being well mixed with high efficiency water reducing agent is slowly added into agitated kettle twice, pot is covered
Lid, stirring are until matrix has certain mobility, and about 2-3min obtains making the mixture of the first composite bed 4；
Vinal is replaced with into carbon fiber and steel fibre, using identical stirring means, obtains making the second composite bed 3
The mixture of mixture and triplex layer 2；
S3：After three kinds of mixtures are weighed, layering from outside to inside is poured into centrifuge, using the closely knit shaping of centrifuging process；
S4：It is quiet after shaping to stop after setting time, carry out steam heating curing；
S5：Demoulding maintenance, obtains hollow rod body 1.
The detailed process of centrifuging process is in step S3：Centrifuging process demixing is poured into, i.e., three layers demixing
Another after all pouring into play centrifugation, it is the ︰ 36 of 9 ︰ 15 that three kinds of mixtures, which weigh ratio, and centrifuging process see the table below：
Circular pole parameter of noncentricity
Wherein g=9.8m/s2, is acceleration of gravity, and the length of hollow rod body 1 can be to finally give sky in 11 ~ 15m, the present embodiment
The length of core bar body 1 be 13m, and the radial thickness of the first composite bed 4, the radial thickness of the second composite bed 3, triplex layer 2
Radial thickness ratio be the ︰ 3 of 1 ︰ 2.The ultra-high performance concrete that the preparation method is used is by increasing high efficiency water reducing agent, control water
Gray scale below 0.18 after can make its compression strength more than 100MPa；Meanwhile, by centrifuging moulding, make three kinds（Steel fibre, carbon are fine
Dimension, PVA）The distribution of composite fibre is more orderly than the UHPC commonly used in building and is distributed in cement pole respectively by the difference of its density
Inner, middle and outer layer, its tensile strength is improved so as to more significant with putting forward.The ultra-high performance concrete（UHPC）Tensile strength
Raising be remarkably improved the utilization benefit of cement pole.
During project installation, prepare multistage hollow rod body 1, hollow rod body 1 is shaped as cylinder, multistage hollow rod body 1 by
Up to set gradually down, ring flange 7 is arranged with the bottom of every section of hollow rod body 1, ring flange 7 is used to connect two sections of shafts, often
The bottom external diameter of section hollow rod body 1 is less than the top internal diameter of next section of hollow rod body 1, the flange of the bottom of every section of hollow rod body 1
Disk 7 is connected by bolt 6 with the top end face of next section of hollow rod body 1, and cushion pad 5, buffering are provided between the adjacent hollow body of rod 1
Pad 5 fill gap between the ring flange 7 of the bottom of every section of hollow rod body 1 and the top end face of next section of hollow rod body 1 and
Gap between the bottom outer wall of every section of hollow rod body 1 and the top inwall of next section of hollow rod body 1, plays the work of buffer unit
With buffering hollow rod body 1 and the extruding of hollow rod body 1 and the extruding of hollow rod body 1 and ring flange 7 improve service life, delayed
Rush pad 5 and use rubber buffer.
The top end face of every section of hollow rod body 1 is provided with multiple bolts hole, and multiple bolts hole are uniformly distributed along the circumference, each bolt
The nut 8 coordinated with bolt 6 is reserved with hole, reserved nut 8 is extended type nut, to ensure the hollow stem of two sections
Body 1 is just embedded in electric pole using ring flange 7 and the connection fastening of nut 8, nut 8 in centrifugal forming electric pole, and bolt 6 is used for will
Ring flange 7 and nut 8 are connected.
The number of bolt hole is 6 ~ 10, using the structure that 8 bolts hole are symmetrical in the present embodiment.
As shown in figure 3, the shaft of hollow rod body 1 is by ultra-high performance concrete（UHPC）It is made, first configures UHPC materials, so
Batch production moulding making is carried out afterwards, and the shaft diameter of the hollow rod body 1 of two sections is inconsistent, the external diameter of hollow rod body 1 on top
The internal diameter of hollow rod body 1 than bottom is small, and centre can place rubber buffer.UHPC constituent is cement, silicon
Powder, fine sand, water, metakaolin, magnesia, composite fibre and high efficiency water reducing agent etc., UHPC have high intensity, high tenacity, height resistance to
The long performance such as property and high corrosion resistance, can be good at providing efficient electric pole service behaviour.
Embodiment two
A kind of ultra-high performance concrete electric pole containing composite fibre, the ultra-high performance concrete electric pole is included with sandwich construction
Hollow rod body 1, the first composite bed 4, the second composite bed 3 and the 3rd that the sandwich construction includes sequentially coaxially being distributed from inside to outside is multiple
Close layer 2；
First composite bed 4 is that the vinal being made using the ultra-high performance concrete containing vinal is combined
Layer；
Second composite bed 3 is the carbon fiber composite bed being made using the ultra-high performance concrete of carbon fiber-containing；
Triplex layer 2 is the steel fibre composite bed being made using the ultra-high performance concrete containing steel fibre.
The making raw material of first composite bed 4 includes ultra-high performance concrete raw material and vinal, the second composite bed 3
Making raw material include ultra-high performance concrete raw material and carbon fiber, the making raw material of triplex layer 2 is mixed including very-high performance
Solidifying soil raw material and steel fibre；
Wherein, the ratio of mud is not more than 0.18 in ultra-high performance concrete raw material, and vinal accounts for the making of the first composite bed 4
The 5.8% of cumulative volume after raw material mixing, carbon fiber accounts for make cumulative volume after raw material mixing the 5.8% of the second composite bed 3, steel fibre
Account for make cumulative volume after raw material mixing the 5.8% of triplex layer 2.
Ultra-high performance concrete raw material includes cement, silica flour, fine sand, metakaolin, magnesia, water and high efficiency water reducing agent,
Wherein, the mass ratio of cement, silica flour, fine sand, metakaolin, magnesia, water and high efficiency water reducing agent is：The ︰ of 0.8 ︰, 0.23 ︰ 1
The ︰ 0.01 of 0.08 ︰, 0.08 ︰ 0.2.
Cement is cement P .O 42.5；
The average grain diameter of silica flour is 0.18 μm, and SiO2 contents are more than or equal to 90%, and specific surface area is 18.9m2/ g, density is 1.8g/
cm3；
The average grain diameter of fine sand is not more than 0.63mm, and density is 2.4g/cm3；
The average grain diameter of metakaolin is 10.64 um；
The average grain diameter of magnesia is 72um；
The water-reducing rate of high efficiency water reducing agent is more than 25%.
The radial thickness of first composite bed 4, the radial thickness of the second composite bed 3, the radial thickness ratio of triplex layer 2
For the ︰ 2.8 of 0.8 ︰ 1.8.
A kind of preparation method of the ultra-high performance concrete electric pole described above containing composite fibre, comprises the following steps：
S1：Polishing centrifuge inwall, corrects sample dimensions, coating release agent；
S2：Cement, silica flour, fine sand, metakaolin, magnesia and the vinal that amount is weighed up successively pour into agitated kettle,
Dry mixing, then the moisture being well mixed with high efficiency water reducing agent is slowly added into stirring twice, obtain making the mixing of the first composite bed 4
Thing；
Vinal is replaced with into carbon fiber and steel fibre, using identical stirring means, obtains making the He of the second composite bed 3
The mixture of triplex layer 2；
S3：After three kinds of mixtures are weighed, layering from outside to inside is poured into centrifuge, using the closely knit shaping of centrifuging process；
S4：It is quiet after shaping to stop after setting time, carry out steam heating curing；
S5：Demoulding maintenance, obtains hollow rod body 1.
The detailed process of centrifuging process is in step S3：With acceleration 1.4g, rotating speed 80r/min low speed rotation 2 minutes；
Rotated 4 minutes with acceleration 6.1g, rotating speed 170r/min middling speed；4 are rotated with acceleration 25g, rotating speed 350r/min high speed
Minute；Rotated 0.8 minute with acceleration 6.1g, rotating speed 170r/min middling speed；With acceleration 1.4g, rotating speed 80r/min it is low
Speed rotation 0.8 minute.
It is the ︰ 34 of 7 ︰ 13 that three kinds of mixtures, which weigh ratio, in step S3.
Embodiment three
A kind of ultra-high performance concrete electric pole containing composite fibre, the ultra-high performance concrete electric pole is included with sandwich construction
Hollow rod body 1, the first composite bed 4, the second composite bed 3 and the 3rd that the sandwich construction includes sequentially coaxially being distributed from inside to outside is multiple
Close layer 2；
First composite bed 4 is that the vinal being made using the ultra-high performance concrete containing vinal is combined
Layer；
Second composite bed 3 is the carbon fiber composite bed being made using the ultra-high performance concrete of carbon fiber-containing；
Triplex layer 2 is the steel fibre composite bed being made using the ultra-high performance concrete containing steel fibre.
The making raw material of first composite bed 4 includes ultra-high performance concrete raw material and vinal, the second composite bed 3
Making raw material include ultra-high performance concrete raw material and carbon fiber, the making raw material of triplex layer 2 is mixed including very-high performance
Solidifying soil raw material and steel fibre；
Wherein, the ratio of mud is not more than 0.18 in ultra-high performance concrete raw material, and vinal accounts for the making of the first composite bed 4
The 6.2% of cumulative volume after raw material mixing, carbon fiber accounts for make cumulative volume after raw material mixing the 6.2% of the second composite bed 3, steel fibre
Account for make cumulative volume after raw material mixing the 6.2% of triplex layer 2.
Ultra-high performance concrete raw material includes cement, silica flour, fine sand, metakaolin, magnesia, water and high efficiency water reducing agent,
Wherein, the mass ratio of cement, silica flour, fine sand, metakaolin, magnesia, water and high efficiency water reducing agent is：The ︰ of 1.2 ︰, 0.27 ︰ 1.4
The ︰ 0.014 of 0.12 ︰, 0.12 ︰ 0.24.
Cement is cement P .O 42.5；
The average grain diameter of silica flour is 0.22 μm, and SiO2 contents are more than or equal to 90%, and specific surface area is 18.94m2/ g, density is
2.2g/cm3；
The average grain diameter of fine sand is not more than 0.63mm, and density is 2.8g/cm3；
The average grain diameter of metakaolin is 10.68 um；
The average grain diameter of magnesia is 76um；
The water-reducing rate of high efficiency water reducing agent is more than 25%.
The radial thickness of first composite bed 4, the radial thickness of the second composite bed 3, the radial thickness ratio of triplex layer 2
For the ︰ 3.2 of 1.2 ︰ 2.2.
A kind of preparation method of the ultra-high performance concrete electric pole described above containing composite fibre, comprises the following steps：
S1：Polishing centrifuge inwall, corrects sample dimensions, coating release agent；
S2：Cement, silica flour, fine sand, metakaolin, magnesia and the vinal that amount is weighed up successively pour into agitated kettle,
Dry mixing, then the moisture being well mixed with high efficiency water reducing agent is slowly added into stirring twice, obtain making the mixing of the first composite bed 4
Thing；
Vinal is replaced with into carbon fiber and steel fibre, using identical stirring means, obtains making the He of the second composite bed 3
The mixture of triplex layer 2；
S3：After three kinds of mixtures are weighed, layering from outside to inside is poured into centrifuge, using the closely knit shaping of centrifuging process；
S4：It is quiet after shaping to stop after setting time, carry out steam heating curing；
S5：Demoulding maintenance, obtains hollow rod body 1.
The detailed process of centrifuging process is in step S3：With acceleration 1.8g, rotating speed 100r/min 4 points of low speed rotation
Clock；Rotated 6 minutes with acceleration 6.5g, rotating speed 190r/min middling speed；With acceleration 25.4g, rotating speed 370r/min high speed
Rotation 6 minutes；Rotated 1.5 minutes with acceleration 6.5g, rotating speed 190r/min middling speed；With acceleration 1.8g, rotating speed 100r/
Min low speed rotation 1.5 minutes.
It is the ︰ 38 of 11 ︰ 17 that three kinds of mixtures, which weigh ratio, in step S3.
Claims (10)
1. a kind of ultra-high performance concrete electric pole containing composite fibre, it is characterised in that the ultra-high performance concrete electric pole includes
Hollow rod body with sandwich construction, the sandwich construction include sequentially coaxially be distributed from inside to outside the first composite bed, second answer
Close layer and triplex layer；
First composite bed is the vinal being made using the ultra-high performance concrete containing vinal
Composite bed；
Second composite bed is the carbon fiber composite bed being made using the ultra-high performance concrete of carbon fiber-containing；
The triplex layer is the steel fibre composite bed being made using the ultra-high performance concrete containing steel fibre.
2. a kind of ultra-high performance concrete electric pole containing composite fibre according to claim 1, it is characterised in that described
The making raw material of one composite bed includes ultra-high performance concrete raw material and vinal, and the making of second composite bed is former
Material includes ultra-high performance concrete raw material and carbon fiber, and the making raw material of the triplex layer includes ultra-high performance concrete original
Material and steel fibre；
Wherein, the ratio of mud is not more than 0.18 in ultra-high performance concrete raw material, and vinal accounts for the making of the first composite bed
Raw material mixing after cumulative volume 5.8 ~ 6.2%, carbon fiber account for the second composite bed make raw material mixing after cumulative volume 5.8 ~
6.2%, steel fibre accounts for make cumulative volume after raw material mixing the 5.8 ~ 6.2% of triplex layer.
3. a kind of ultra-high performance concrete electric pole containing composite fibre according to claim 2, it is characterised in that described super
High performance concrete raw material includes cement, silica flour, fine sand, metakaolin, magnesia, water and high efficiency water reducing agent, wherein, cement,
Silica flour, fine sand, metakaolin, magnesia, the mass ratio of water and high efficiency water reducing agent are：The ︰ of 0.8 ~ 1.2 ︰, 0.23 ~ 0.27 ︰ 1 ~ 1.4
The ︰ 0.01 ~ 0.014 of 0.08 ~ 0.12 ︰, 0.08 ~ 0.12 ︰ 0.2 ~ 0.24.
4. a kind of ultra-high performance concrete electric pole containing composite fibre according to claim 3, it is characterised in that the water
Mud is cement P .O 42.5；
The average grain diameter of the silica flour is 0.18 ~ 0.22 μm, SiO2Content be more than or equal to 90%, specific surface area be 18.9 ~
18.94m2/ g, density is 1.8 ~ 2.2g/cm3；
The average grain diameter of the fine sand is not more than 0.63mm, and density is 2.4 ~ 2.8g/cm3；
The average grain diameter of the metakaolin is 10.64 ~ 10.68 um；
The average grain diameter of the magnesia is 72 ~ 76um；
The water-reducing rate of the high efficiency water reducing agent is more than 25%.
5. a kind of ultra-high performance concrete electric pole containing composite fibre according to claim 1, it is characterised in that described
The radial thickness of one composite bed, the radial thickness of the second composite bed, the radial thickness ratio of triplex layer are 0.8 ~ 1.2 ︰ 1.8
~ 2.2 ︰ 2.8 ~ 3.2.
6. a kind of ultra-high performance concrete electric pole containing composite fibre according to claim 1, it is characterised in that the sky
Core bar body is multistage, and multistage hollow rod body is from top to bottom set gradually, and ring flange is arranged with the bottom of every section of hollow rod body, often
The bottom external diameter of section hollow rod body is less than the top internal diameter of next section of hollow rod body, and the ring flange of the bottom of every section of hollow rod body leads to
The top end face that bolt is crossed with next section of hollow rod body is connected, and cushion pad is provided between the adjacent hollow body of rod, and the cushion pad is filled out
The gap filled between the ring flange of the bottom of every section of hollow rod body and the top end face of next section of hollow rod body and every section it is hollow
Gap between the top inwall of the bottom outer wall of the body of rod and next section of hollow rod body.
7. a kind of preparation method of the ultra-high performance concrete electric pole as claimed in claim 1 containing composite fibre, its feature exists
In comprising the following steps：
S1：Polishing centrifuge inwall, corrects sample dimensions, coating release agent；
S2：Cement, silica flour, fine sand, metakaolin, magnesia and the vinal that amount is weighed up successively pour into agitated kettle,
Dry mixing, then the moisture being well mixed with high efficiency water reducing agent is slowly added into stirring twice, obtain making the mixing of the first composite bed
Thing；
Vinal is replaced with into carbon fiber and steel fibre, using identical stirring means, obtain make the second composite bed and
The mixture of triplex layer；
S3：After three kinds of mixtures are weighed, layering from outside to inside is poured into centrifuge, using the closely knit shaping of centrifuging process；
S4：It is quiet after shaping to stop after setting time, carry out steam heating curing；
S5：Demoulding maintenance, obtains hollow rod body.
8. a kind of preparation method of ultra-high performance concrete electric pole containing composite fibre according to claim 7, its feature
It is, the detailed process of centrifuging process is in the step S3：With 1.4 ~ 1.8g of acceleration low speed rotation 2 ~ 4 minutes；To add
6.1 ~ 6.5g of speed middling speed rotates 4 ~ 6 minutes；Rotated 4 ~ 6 minutes with 25 ~ 25.4g of acceleration high speed；With acceleration 6.1 ~
6.5g middling speed rotates 0.8 ~ 1.5 minute；With 1.4 ~ 1.8g of acceleration low speed rotation 0.8 ~ 1.5 minute.
9. a kind of preparation method of ultra-high performance concrete electric pole containing composite fibre according to claim 8, its feature
It is, the rotating speed of low speed is 80 ~ 100r/min；The rotating speed of middling speed is 170 ~ 190r/min；The rotating speed of high speed is 350 ~ 370r/
min。
10. a kind of preparation method of ultra-high performance concrete electric pole containing composite fibre according to claim 7, its feature
It is, it is the ︰ 34 ~ 38 of 7 ~ 11 ︰ 13 ~ 17 that three kinds of mixtures, which weigh ratio, in the step S3.
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| CN109025460A (en) * | 2018-09-18 | 2018-12-18 | 福建瑞森水泥制品发展有限公司 | A kind of assembled light thin-wall composite pole and preparation method thereof and connection type |
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| CN107023211B (en) | 2023-04-28 |
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