CN109252729A - Non-evaporating feeding corrosion resistant concrete electric pole of one kind and preparation method thereof - Google Patents
Non-evaporating feeding corrosion resistant concrete electric pole of one kind and preparation method thereof Download PDFInfo
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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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- 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
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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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
- C04B41/4505—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application
- C04B41/4535—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application applied as a solution, emulsion, dispersion or suspension
- C04B41/4543—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application applied as a solution, emulsion, dispersion or suspension by spraying, e.g. by atomising
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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
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—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
- C04B2111/00008—Obtaining or using nanotechnology related materials
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/26—Corrosion of reinforcement resistance
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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Abstract
The invention belongs to the field of building materials, it is related to being a kind of concurrent and preparation method thereof.The electric pole includes electric pole framework of steel reinforcement, fill and wrap up the concrete and waterproof coating of framework of steel reinforcement, wherein framework of steel reinforcement surface is covered with equally distributed erosion resistant coating, it is prepared by framework of steel reinforcement, concrete preparation, concurrent preparation and concurrent surface anticorrosion handle four steps and are prepared, obtained electric pole performance meets the requirement of GB/T 4623-2014, and it realizes on the basis of guaranteeing and improving concurrent performance and template week transfer efficient, significantly reduce the purpose of production cost, meet the requirement for the energy-saving, emission-reducing, environment friendly that country proposes now, with good economic benefit and social benefit.
Description
Technical field
The invention belongs to the field of building materials, more particularly to being a kind of concurrent and preparation method thereof.
Background technique
Concurrent is at low cost with its, easy for construction, long service life and the advantage that can not be substituted such as non-maintaining, extensively
Applied in the engineerings such as electric power overhead power transmission and transformation line, railway contact line pillar, broadcast communication, street illumination.From nineteen twenty-four I
State produces the 1st article of square solid cement electric pole so far, and the cement concrete electric pole in China has had more than 90 years history, at present
China has become countries most using concurrent in the world.
General concrete electric pole is to be centrifuged into using deformed bar and concrete as main material using pretensioned prestressing
Type technique, and by a kind of concrete prefabricated element made of steam curing.Since China has a vast territory, various regions weather, soil
Environment also has diversity, such as the damp and hot of the southeastern coastal areas, carbonization and chlorine salt corrosion, freeze thawing, the carbonization of Northern Coastal Provinces
And chlorine salt corrosion, the dry and cold, xeothermic of western Salt Lake Area, villaumite and sulphate corrosion, so that the failure mode of concurrent
It is more universal, complicated.Since normal concrete electric pole freeze thawing resistance and anti-permeability performance are all poor, when it is applied to low lying areas,
Buried section of the body of rod often has ponding, and the moisture around the body of rod can also penetrate into the concrete pore of electric pole inner wall, with
Body of rod under the action of Frozen-thawed cycled is caused to destroy, to substantially reduce the service life of high-tension pole.
Another principal element that caused prestressed reinforced concrete electric pole destroys is steel bar corrosion, underground water and soil
Corrode expansion Shi Quan cracking, the Yellow River area, the mainly salt in the bath of chloride ion electric pole internal cavity easily occur for such phenomenon
Class, soil underground water immerse electric pole root through capillary action, due to making steel bar corrosion, chlorine ion concentration when corrosion generates the limit
Increase Wet/Dry Cyclic Conditions, rise to that certain altitude air humidity is proportional, the width and time majority in crack are longitudinal
Crack, crack mostly occurs in electric pole lower part in the range of the above 2m in ground.
Under various rugged environments, concurrent by the effect of corrosive medium, leads to concrete structure for a long time
The cracking of energy, durability reduce, to influence local power transmission engineering.Therefore, a kind of concurrent of improved corrosion is prepared
With adapt to compared under harsh environment using having great importance.
In addition, annular concrete electric pole production in the country's all uses steam curing mode at present, to accelerate the hardening of concrete,
The early strength for improving concrete makes molding electric pole reach demoulding strength within a short period of time, accelerates mold turnover, improves electric pole
Production efficiency.But steam curing causes not endurance performance of concrete while accelerating concrete hardening, improving early strength
Benefit influences, and steam curing energy consumption is larger.With the proposition of China's low-carbon energy-saving Economic Development Mode, country, owner are to coagulation
More stringent requirements are proposed for energy-saving and environmental protection, performance, quality and the economy of native production of articles, and concrete product manufacturing enterprise is urgently
It need to implement technological innovation from energy-saving and emission-reduction, improvement performance, economic and reliable angularly.Therefore, it is raw that concurrent need to be explored
What is produced exempts from steam curing process, and further promotes the performance of electric pole.
Summary of the invention
The present invention provides a kind of preparation side of non-evaporating feeding highly corrosion resistant concurrent aiming at above-mentioned technical problem
Method, this method is on the basis of guaranteeing and improving concurrent performance and template week transfer efficient, by concrete former material
Preferably, the surface of reinforcing bar is modified for material, and the production technology of concurrent is improved, and makes full use of environment temperature to concrete strength
The effect of development, steam curing production annular concrete electric pole can be removed from by obtaining one kind, while pass through multiple anticorrosive technology hand
Section, develops non-evaporating feeding highly corrosion resistant concurrent.
Above-mentioned concurrent includes electric pole framework of steel reinforcement, filling and the concrete and waterproof coating that wrap up framework of steel reinforcement,
Wherein framework of steel reinforcement surface is covered with equally distributed erosion resistant coating.The electric pole is prepared by following steps:
(1) preparation of framework of steel reinforcement
Rebar surface is surface-treated with NaOH solution first, then silane antirust agent is sprayed in surface, finally uses
Reinforcing bar after antirust treatment carries out the production of framework of steel reinforcement, and puts it into the mold cleaned out.
Preferably, the NaOH solution of 3mol/L is selected to impregnate 5-20min, silane antirust agent then is sprayed in surface, is risen
Quantity for spray is 5-15g/cm2。
(2) preparation of concrete
Concrete of the present invention include: early strong rubber gel material, fine aggregate, coarse aggregate, water-reducing agent, non-villaumite early strength agent,
Anticorrosive and water, water-cement ratio are 0.2~0.35, and sand coarse aggregate ratio is 34~42%；Wherein early strong rubber gel material content be 450~
550kg/m3, water-reducing agent volume is the 0.4~2.0% of early strong rubber gel material quality, and early strength agent is early strong rubber gel material volume
0.8~2.0%, anticorrosive is the 0.8-2.5% of early strong rubber gel material quality；The morning strong rubber gel material is silicate cement
Mud-silicon ash-slag ternary system, wherein silicon ash is the 5-10% of total early strong rubber gel material quality；Slag is that total early strong rubber coagulates material
Expect the 10-20% of quality, remaining is portland cement, and the fine aggregate is the natural sand that fineness modulus is 2.3~3.0 or artificial
Sand, coarse aggregate are the natural rubble that partial size is 5~25mm or artificial rubble, the water-reducing agent be aliphatic, naphthalene water reducer or
One of polycarboxylate dehydragent or combinations thereof, non-villaumite early strength agent are triethanolamine, calcium nitrate, sodium nitrate, sodium sulphate, sulphur
One of sodium thiosulfate or combinations thereof.
Preservative is sodium nitrite, in calcium nitrite, sodium benzoate, prodan, barium carbonate, barium nitrate, lithium carbonate
The selection of one kind or combinations thereof, preservative will be determined according to environmental condition, and be needed under necessary condition using air entraining agent portion
Substitution preservative is divided to use, the dosage of air entraining agent is 0.1~the 0.5 ‰ of total gel, and air entraining agent is lignosulfonates, rosin is warm
Polymers, three patch one of saponin(es or combinations thereof, for example, under bar in chlorine salt solution: preservative select sodium nitrite, calcium nitrite,
One of sodium benzoate, prodan or combinations thereof；Under condition of sulfate: selection air entraining agent lignosulfonates, rosin
Heat takes object, three to paste a kind of in saponin(es, preservative selection sodium nitrite, calcium nitrite, sodium benzoate, prodan, barium carbonate, nitre
One of sour barium, lithium carbonate or combinations thereof；Under freezing-thawing: selection air entraining agent lignosulfonates, rosin heat take object, three
Paste a kind of in saponin(e, one of preservative selection sodium nitrite, calcium nitrite, triethanolamine or combinations thereof.
Preferably, it is 42.5 or 52.5 portland cement that above-mentioned portland cement, which selects strength grade,.
Preferably, above-mentioned silicon ash can be substituted by nano-silicon part, the additive amount of nano-silicon is total early strong rubber gel material matter
The 0.5~3% of amount.
Above-mentioned concrete the preparation method comprises the following steps: the fine aggregate and early strong rubber gel material are put into coagulation by said ratio
Native blender, stirring is until uniformly, then put into concrete mixer for the 70~90% of required water weight, then be stirred
Until uniformly, finally successively putting into required coarse aggregate, water-reducing agent, early strength agent, anticorrosive and remaining water and being stirred again
Until uniformly obtaining the concrete of required workability.
(3) preparation of concurrent
The concrete that step (2) obtains uniformly is fitted into the mold for being equipped with framework of steel reinforcement, to cloth after, into
Row molding and prestressed stretch-draw, stretching force are the 70~75% of the total tensile strength of deformed bar, then concrete will be housed
Mold carries out centrifugal forming operation after prestressed stretch-draw, until concurrent forms, finally to equipped with concrete and reinforcing bar
The mold of skeleton carries out room temperature maintenance, wherein curing temperature > 20 DEG C, and curing time is 24 hours.
(4) concurrent surface anticorrosion is handled
Electric pole demoulding after the maintenance that step (3) is obtained, then surface coats curing compound, and on electric pole surface
Spray silicon substrate response type waterproof coating.
The present invention is obtained to be had the beneficial effect that
1, concrete uses based on portland cement-silicon ash-slag ternary system with early powerful feature in the present invention,
Cooperation is played synergistic effect, is made in concrete preparation process, can be complied fully with using natural curing with early strength agent, the two
The requirement of GB50164-2011 and 50204-2015, it is possible to reduce steam-cured link substantially reduces production cost, saving
Resource and the energy have energy-saving, emission-reducing, environment friendly, remarkable in economical benefits.
2, the process of surface treatment of framework of steel reinforcement imparts the lasting corrosion resistance of framework of steel reinforcement, concrete in the present invention
The addition of middle anticorrosive, improves the corrosion resistance of concrete entirety, and integer electric pole demoulds the painting of rear surface waterproof coating
Cover, greatly slowed down the corrosion rate of electric pole, the integrated use of these technologies make electric pole provided by the present invention with it is existing
Electric pole, which is compared, has excellent corrosion resistance.
3, the examination of the hostile environments such as phosphorous, heavy metal ion is not used in framework of steel reinforcement surface treatment process of the invention
Agent；Technology processor is simple, and required time is short, is easy to control, and processing does not need to heat；And caustic corrosion and spraying process are not
Additional impurity element can be introduced.
4, framework of steel reinforcement process of surface treatment of the invention makes rebar surface contain a large amount of hydroxyl (- OH) group, the base
Group can generate covalent bond Si-O-Fe with silane reaction, enable silane antirust agent in steel when spraying silane antirust agent
Muscle surface intersects to form reticular protection film layer by coupling；Meanwhile the Si-O key being rich in silane antirust agent can in concrete
Chemical reaction occurs between hydrolysis product of cement calcium hydroxide and generates hydrated calcium silicate (C-S-H) gel, to reduce coagulation
Interfacial transition zone between soil and reinforcing bar, enhances the cohesive force between reinforcing bar and concrete, realizes mechanical snap and chemistry
In conjunction with collective effect.
5, due to the collective effect of above-mentioned beneficial effect, so that electric pole performance provided by the present invention meets GB/T 4623-
2014 requirement, therefore electric pole provided by the invention and preparation method thereof are guaranteeing and are improving concurrent performance and mould
On the basis of plate week transfer efficient, production cost is significantly reduced, meets the requirement for the energy-saving, emission-reducing, environment friendly that country proposes now, tool
There are good economic benefit and social benefit.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Embodiment 1
Concurrent provided by the present embodiment is applied in bar in chlorine salt solution and includes electric pole framework of steel reinforcement, filling and wrap
The concrete and waterproof coating of framework of steel reinforcement are wrapped up in, wherein framework of steel reinforcement surface is covered with equally distributed erosion resistant coating.The electric pole be through
Following steps are crossed to prepare:
(1) preparation of framework of steel reinforcement
The rebar surface NaOH solution of 3mol/L is impregnated into 10min first, then silane antirust agent is sprayed in surface, rises
Quantity for spray is 10g/cm2, the production of electric pole skeleton structure is finally carried out with the reinforcing bar after antirust treatment, and put it into
In mold through cleaning out；
(2) preparation of concrete
Concrete provided by the present embodiment includes: early strong rubber gel material, fine aggregate, coarse aggregate, water-reducing agent, non-villaumite morning
Strong agent, anticorrosive and water, water-cement ratio 0.3, sand coarse aggregate ratio 38%；The early strong rubber gel material is portland cement-silicon ash-
Slag ternary system, wherein portland cement strength grade is 42.5, content 358kg/m3, silicon ash content is 37kg/m3, mine
Slag content is 70kg/m3, fineness modulus be 2.6 natural sand 697kg/m3, partial size is the natural rubble of 5~25mm continuous grading
1140kg/m3, water-reducing agent high-efficiency water-reducing agent of poly-carboxylic acid, volume is the 0.5% of early strong rubber gel material quality, and early strength agent calcium nitrate is
The 0.8% of early strong rubber gel material volume, anticorrosive calcium nitrite are the 1.5% of early strong rubber gel material quality；
Above-mentioned concrete the preparation method comprises the following steps: by said ratio by the natural sand, natural rubble and early strong rubber gel material,
Early strength agent, preservative put into concrete mixer, and stirring is until uniformly, then put into coagulation for the 50% of required water weight
Native blender, then be stirred until uniformly, being finally stirred water-reducing agent and remaining water again until uniformly obtaining required
The concrete of workability；
(3) preparation of concurrent
The concrete that step (2) obtains uniformly is fitted into the mold for being equipped with framework of steel reinforcement, to cloth after, into
Row molding and prestressed stretch-draw, stretching force are the 70% of the total tensile strength of deformed bar, then the mold of concrete will be housed
Centrifugal forming operation is carried out after prestressed stretch-draw, until concurrent forms, finally to equipped with concrete and framework of steel reinforcement
Mold carry out room temperature maintenance, wherein 20 DEG C of curing temperature, curing time is 24 hours；
(4) concurrent surface anticorrosion is handled
Electric pole demoulding after the maintenance that step (3) is obtained, then surface coats curing compound, and on electric pole surface
Spray silicon substrate response type waterproof coating.
Intensity inspection is carried out with concrete to electric pole obtained above using GB/T50081 " normal concrete mechanical property " method
It surveys.
Embodiment 2
Concurrent provided by the present embodiment, apply in condition of sulfate include electric pole framework of steel reinforcement, filling simultaneously
The concrete and waterproof coating of framework of steel reinforcement are wrapped up, wherein framework of steel reinforcement surface is covered with equally distributed erosion resistant coating.The electric pole is
It is prepared by following steps:
(1) preparation of framework of steel reinforcement
The rebar surface NaOH solution of 3mol/L is impregnated into 5min first, then silane antirust agent is sprayed in surface, rises
Quantity for spray is 5g/cm2, finally reinforcing bar being carried out after antirust treatment, different-diameter and different length is made by design requirement
Electric pole skeleton structure, and put it into the mold cleaned out；
(2) preparation of concrete
Concrete provided by the present embodiment includes: early strong rubber gel material, fine aggregate, coarse aggregate, water-reducing agent, non-villaumite morning
Strong agent, anticorrosive and water, water-cement ratio 0.3, sand coarse aggregate ratio 38%；The early strong rubber gel material is portland cement-silicon ash-
Slag ternary system, wherein portland cement strength grade is 42.5, content 358kg/m3, silicon ash content is 37kg/m3, mine
Slag content is 70kg/m3, fineness modulus be 2.6 natural sand 697kg/m3, partial size is the natural rubble of 5~25mm continuous grading
1140kg/m3, polyacids acid water-reducing agent is the 0.5% of early strong rubber gel material quality, and early strength agent calcium nitrate is that early strong rubber gel material is mixed
The 0.8% of amount, prodan anticorrosive volume are the 1.5% of early strong rubber gel material quality, and lignosulfonates air entraining agent is
The 0.1 ‰ of total gel；
Above-mentioned concrete the preparation method comprises the following steps: by said ratio by the natural sand, natural rubble and early strong rubber gel material,
Early strength agent, preservative put into concrete mixer, and stirring is until uniformly, then put into coagulation for the 60% of required water weight
Native blender, then be stirred until uniformly, being finally stirred water-reducing agent and remaining water again until uniformly obtaining required
The concrete of workability；
(3) preparation of concurrent
The concrete that step (2) obtains uniformly is fitted into the mold for being equipped with framework of steel reinforcement, to cloth after, into
Row molding and prestressed stretch-draw, stretching force are the 70% of the total tensile strength of deformed bar, then the mold of concrete will be housed
Centrifugal forming operation is carried out after prestressed stretch-draw, until concurrent forms, finally to equipped with concrete and framework of steel reinforcement
Mold carry out room temperature maintenance, wherein 20 DEG C of curing temperature, curing time is 24 hours；
(4) concurrent surface anticorrosion is handled
Electric pole demoulding after the maintenance that step (3) is obtained, then surface coats curing compound, and on electric pole surface
Spray silicon substrate response type waterproof coating.
Embodiment 3
For the present embodiment other than using nano-silicon substitution rate part silicon ash, other conditions and parameter are same as Example 1,
Wherein the additive amount of nano-silicon is the 1.0% of total early strong rubber gel material quality, i.e. 4.65kg/m3, and nano-silicon and silicon ash add
The sum of dosage is 37kg/m3)；Wherein 20 DEG C of curing temperature, 30 DEG C, 40 DEG C, curing time are respectively 24 hours；
Embodiment 4
For the present embodiment other than curing temperature is 30 DEG C, other conditions and parameter are same as Example 1.
Embodiment 5
For the present embodiment other than curing temperature is 40 DEG C, other conditions and parameter are same as Example 1.
Embodiment 6
For the present embodiment other than curing temperature is 30 DEG C, other conditions and parameter are same as Example 2.
Embodiment 7
For the present embodiment other than curing temperature is 40 DEG C, other conditions and parameter are same as Example 2.
Comparative example
The production stage of general normal concrete electric pole is as follows at present:
(1) preparation of framework of steel reinforcement
Reinforcing bar is made to the electric pole framework of steel reinforcement of different length and diameter as needed first, and put it into cleared up it is dry
In net mold；
(2) preparation of concrete
Concrete provided by the present embodiment includes: cementitious material, fine aggregate, coarse aggregate, water-reducing agent and water, and water-cement ratio is
0.3, sand coarse aggregate ratio 38%；The cementitious material is portland cement, and wherein portland cement strength grade is 42.5, and content is
490kg/m3, fineness modulus be 2.6 natural sand 697kg/m3, partial size is the natural rubble 1140kg/ of 5~25mm continuous grading
m3, water-reducing agent is the 0.5% of cementitious material quality；
Above-mentioned concrete the preparation method comprises the following steps: by said ratio by the natural sand, natural rubble and early strong rubber gel material
Concrete mixer is put into, is stirred up to uniformly, the 50-60% of required water weight then being put into concrete mixer,
It is stirred again until uniformly, being finally stirred water-reducing agent and remaining water again until uniformly obtaining the mixed of required workability
Solidifying soil；(3) preparation of concurrent
The concrete that step (2) obtains uniformly is fitted into the mold for being equipped with framework of steel reinforcement, to cloth after, into
Row molding and prestressed stretch-draw, stretching force are the 70% of the total tensile strength of deformed bar, then the mold of concrete will be housed
Centrifugal forming operation is carried out after prestressed stretch-draw, until concurrent forms, finally to equipped with concrete and framework of steel reinforcement
Mold conserved, conservation system are as follows: heating 1h: heating rate ≯ 25 DEG C/h；Constant temperature: 85 ± 5 DEG C of temperature, constant temperature time 3-
4h, cooling: 1h improves the early strength of concrete to accelerate the hardening of concrete；
Electric pole demoulding after the maintenance that step (3) is obtained, then surface coats curing compound, heap under natural environment
It dispatches from the factory after putting 7 days.
It is as shown in table 1 that steam-cured intensity contrast is carried out to embodiment 1-7 and the resulting electric pole of comparative example, it is seen that non-evaporating feeding coagulation
Soil can reach 70% or more of design concrete strength at 20 DEG C or more at 1 day, can satisfy the de- of GB/T4623-2014
Mould requirement.Also it can satisfy the demand of manufacturer's split run production.
1 embodiment 1-7 of table and the resulting electric pole of comparative example carry out concrete strength contrast table
Corrosion-resistant, durability detection comparison, concrete are carried out to embodiment 1-7 and the resulting electric pole of comparative example to embodiment
Durability detection method is GB/T50082 " normal concrete chronicity and durability ", and acquired results are as shown in table 2.
2 embodiment 1-7 of table and the resulting electric pole of comparative example carry out corrosion-resistant, the durability table of comparisons
Claims (10)
1. a kind of non-evaporating feeding corrosion resistant concrete electric pole, which is characterized in that the concurrent includes electric pole framework of steel reinforcement, filling
And the concrete of framework of steel reinforcement and the waterproof coating of coating and electric pole surface are wrapped up, wherein framework of steel reinforcement surface, which is covered with, is uniformly distributed
Erosion resistant coating, the concrete includes: early strong rubber gel material, fine aggregate, coarse aggregate, water-reducing agent, non-villaumite early strength agent, anti-corrosion
Agent and water are lost, water-cement ratio is 0.2~0.35, and sand coarse aggregate ratio is 34~42%；Wherein early strong rubber gel material content is 450~550kg/
m3, water-reducing agent volume is the 0.4~2.0% of early strong rubber gel material quality, early strength agent be early strong rubber gel material volume 0.8~
2.0%, anticorrosive is the 0.8-2.5% of early strong rubber gel material quality；The morning strong rubber gel material is portland cement-silicon
Ash-slag ternary system, wherein silicon ash is the 5-10% of total early strong rubber gel material quality；Slag is total early strong rubber gel material quality
10-20%, remaining is portland cement, and the fine aggregate is the natural sand or artificial sand that fineness modulus is 2.3~3.0, slightly
Aggregate is the natural rubble that partial size is 5~25mm or artificial rubble, and the water-reducing agent is aliphatic, naphthalene water reducer or polycarboxylic acids
One of salt water-reducing agent or combinations thereof, non-villaumite early strength agent are triethanolamine, calcium nitrate, sodium nitrate, sodium sulphate, thiosulfuric acid
One of sodium or combinations thereof, preservative be sodium nitrite, calcium nitrite, sodium benzoate, prodan, barium carbonate, barium nitrate,
One of lithium carbonate or combinations thereof.
2. non-evaporating feeding corrosion resistant concrete electric pole according to claim 1, which is characterized in that the erosion resistant coating is silane
Antirust agent intersects to form reticular protection film layer in the coupling of framework of steel reinforcement surface.
3. non-evaporating feeding corrosion resistant concrete electric pole according to claim 2, which is characterized in that the reticular protection film layer
Preparation method be first to be surface-treated rebar surface with NaOH solution, then in surface spray silane antirust agent.
4. non-evaporating feeding corrosion resistant concrete electric pole according to claim 1, which is characterized in that the portland cement intensity
Grade is 42.5 or 52.5.
5. non-evaporating feeding corrosion resistant concrete electric pole according to claim 1, which is characterized in that the silicon ash is by nano-silicon portion
Divide substitution, the additive amount of nano-silicon is the 0.5~3% of total early strong rubber gel material quality.
6. non-evaporating feeding corrosion resistant concrete electric pole according to claim 1, which is characterized in that the preservative, in sulphur
Under hydrochlorate environment and freezing-thawing, it is also necessary to add air entraining agent part substitution preservative, wherein bleed agent content is total gelling
0.1~the 0.5 ‰ of amount.
7. a kind of preparation method of non-evaporating feeding corrosion resistant concrete electric pole described in claim 1, which is characterized in that this method packet
Include following steps:
(1) preparation of framework of steel reinforcement
Rebar surface is surface-treated with NaOH solution first, then silane antirust agent is sprayed in surface, will finally pass through
The production of framework of steel reinforcement is carried out after antirust treatment, and is put it into the mold cleaned out；
(2) preparation of concrete
Fine aggregate and early strong rubber gel material are put into concrete mixer by concrete proportioning, stirring will be until uniformly, then will
Concrete mixer is put into the 70~90% of required water weight, then is stirred up to uniform, finally successively needed for investment
Coarse aggregate, water-reducing agent, early strength agent, preservative and remaining water are stirred again until uniformly obtaining the coagulation of required workability
Soil；
(3) preparation of concurrent
The concrete that step (2) obtains uniformly is fitted into the mold for being equipped with framework of steel reinforcement, to cloth after, closed
Mould and prestressed stretch-draw, stretching force are the 70~75% of the total tensile strength of deformed bar, then the mold of concrete will be housed
Centrifugal forming operation is carried out after prestressed stretch-draw, until concurrent forms, finally to equipped with concrete and framework of steel reinforcement
Mold carry out room temperature maintenance, wherein curing temperature > 20 DEG C, curing time is 24 hours；
(4) concurrent surface anticorrosion is handled
Electric pole demoulding after the maintenance that step (3) is obtained, then surface coats curing compound, and sprays on electric pole surface
Silicon substrate response type waterproof coating.
8. the preparation method of non-evaporating feeding corrosion resistant concrete electric pole according to claim 6, which is characterized in that described is anti-
Rotten agent selects one of sodium nitrite, calcium nitrite, sodium benzoate, prodan or combinations thereof under bar in chlorine salt solution.
9. the preparation method of non-evaporating feeding corrosion resistant concrete electric pole according to claim 6, which is characterized in that described is anti-
Rotten agent selects sodium nitrite, calcium nitrite, sodium benzoate, prodan, barium carbonate, barium nitrate, carbon under condition of sulfate
One of sour lithium or combinations thereof, while air entraining agent is added, take object, three to paste one kind in saponin(es for lignosulfonates, rosin heat.
10. the preparation method of non-evaporating feeding corrosion resistant concrete electric pole according to claim 6, which is characterized in that described
Preservative selects one of sodium nitrite, calcium nitrite, triethanolamine or combinations thereof, while addition is drawn under freezing-thawing
Gas agent takes object, three to paste one kind in saponin(es for lignosulfonates, rosin heat.
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| CN112267744A (en) * | 2020-09-24 | 2021-01-26 | 广东泷江源水泥制品有限公司 | Non-prestressed glass steel tube-concrete composite electric pole and preparation method thereof |
| CN112302405A (en) * | 2020-09-24 | 2021-02-02 | 广东泷江源水泥制品有限公司 | Non-prestressed glass fiber reinforced plastic pipe-ultra-high performance concrete composite electric pole and preparation method thereof |
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