CN109437713A - A kind of double low pressure steam curing techniques of tubular pole - Google Patents
A kind of double low pressure steam curing techniques of tubular pole Download PDFInfo
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- CN109437713A CN109437713A CN201811169161.8A CN201811169161A CN109437713A CN 109437713 A CN109437713 A CN 109437713A CN 201811169161 A CN201811169161 A CN 201811169161A CN 109437713 A CN109437713 A CN 109437713A
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- tubular pole
- low pressure
- steam curing
- pressure steam
- admixture
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/024—Steam hardening, e.g. in an autoclave
-
- 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
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0277—Hardening promoted by using additional water, e.g. by spraying water on the green concrete element
- C04B40/029—Hardening promoted by using additional water, e.g. by spraying water on the green concrete element using an aqueous solution or dispersion
-
- 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
- C04B2111/24—Sea water resistance
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention discloses a kind of double low pressure steam curing techniques of tubular pole, with it is traditional exempt to press steam curing technique compared with, it is added in material simultaneously using two kinds of admixtures, wherein the main component of the first admixture is middle sand, Bo Naite and stone, it joined a small amount of Bo Naite on the basis of traditional aggregate, the intensity of material can be obviously improved；And the main component of second mineral admixture is aluminium oxide, magnesia and silica, which can significantly improve the density of tubular pole；After maintenance early period, tubular pole is put into and impregnates in soak and conserves again, the outer layer for being conducive to tubular pole forms fine and close membranaceous material, can be obviously improved the sea water corrosion resistant of tubular pole.
Description
Technical field
The present invention relates to concrete tubular pile technical field more particularly to a kind of double low pressure steam curing techniques of tubular pole.
Background technique
The production process of PHC tubular pole, i.e. PHC piles, tubular pole is usually: weighing cement, sand, stone
Son, additive water, composition, admixture is stirred by the admixture of metering, cloth is then carried out, by semi-cylindrical shaped tubular pole
Mould is opened, and cylinder-shaped steel reinforcement cage is placed in pipe pile mould, is carried out cloth: equably being poured the admixture after stirring into pipe pile mould
It is interior, to reinforcing rod progress prestressed stretch-draw, two semi-cylindrical shaped pipe pile moulds are closed into button and are integrally fixed and by leaving certainly at a high speed
Heart molding, steam curing, demoulding, autoclave curing, the examination and test of products.PHC tubular pole be using pre-tensioned prestressing centrifugal molding process, and
By 10 atmospheric pressure (1.0Mpa or so), 180 DEG C or so of steam curing, a kind of mixed doubtful prefabricated structure of soil of hollow cylinder shape is made
Part, a length of 10m of standard knot, diameter is from 300mm-800mm, strength grade of concrete >=C30.
The advantages of PHC tubular pole
1, bearing capacity of single pile height can squeeze into closely knit layer of sand and strongly weathered sand-rock due to PHC tubular pile body concrete strength height, by
In squeezing action, bearing capacity of pile tip improves 70%-80% than original state soil property, and pile side friction improves 20%-40%.Therefore,
PHC tubular pole design ultimate bearing capacity is higher than the driven cast-in-place pile, cast-in-situ bored pile and artificial digging pile of same diameter.
2, the PHC tubular pole that has a wide range of application is to bear upper load jointly by collateral resistance and end resistance, and strong-weathered rock may be selected
Layer, fully weathered rock stratum, a variety of soil properties such as hard argillic horizon or closely knit layer of sand (or boulder bed) are as supporting course, and to holding force
The big geological conditions of layer fluctuations is adaptable, therefore adaptation region is wide, and building type is more.Be widely used in 60 layers it is below
A variety of skyscrapers and industry and civil buildings embedded footing on piles, low capped pile foundation plinth, railway, highway and bridge, harbour, harbour, water conservancy, city
The engineering foundations such as political affairs, structures and large scale equipment.
3, pile sinking reliable in quality PHC tubular pole is batch production, specialization, standardized production, and pile quality is reliable；Transporting and hoisting
Convenient, pile extension is quick；Mechanized construction degree is high, easy to operate, easy to control；On bearing capacity, anti-bending strength, anti-group of performance
Easily it is guaranteed.
The a large amount of energy can be consumed using high-pressure steaming and cultivating technique, increase production process, occupy a large amount of production time, it is right
The quality control of PHC tubular pole can also have an impact.Exploitation exempts from pressure steaming PHC tubular pole and is used to prepare PHC tubular pole with early strong concrete,
In the case where guaranteeing strength grade of concrete, construction link, save the cost, " energy-saving and emission-reduction ", control quality can be simplified, it is right
The raising of PHC tubular pole product quality and yield, improving benefit and promoting and applying all has significance.
For the compression strength for exempting from pressure pipe stake currently on the market generally in 70-80MPa, compression strength after maintenance 7 days can be with
Reach 90MPa, such intensity, which can be substantially met, produces needs, but some special industries, not only requires to intensity, also
The durability of material is required, such as the resistance of concrete to chloride ion penetration, anti-sulphates corrosive ability, anti-freezing property, sea water resistance are rotten
Corrosion can wait, therefore the present invention provides a kind of double low pressure steam curing techniques of tubular pole.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of double low pressure steam curing techniques of tubular pole.
Technical scheme is as follows:
A kind of double low pressure steam curing techniques of tubular pole, comprising the following steps:
Cement, the first admixture and second mineral admixture are added in blender A, stir 60-70s, and water and naphthalene system is then added
High efficiency water reducing agent stirs 90-120s；
The concrete that B obtains step A is spare after cloth, molding, tensioning processing；
C at normal temperatures and pressures, the tubular pole with mold is carried out to conserve 30-60min 75-85 DEG C of early period；
After D demoulding tool, tubular pole is put into soak and impregnates 10-15min；
E conserves 4-6h for 75-85 DEG C at normal temperatures and pressures, by tubular pole progress again.
Preferably, in the step A, the ratio of the parts by weight of each raw material is as follows: 10-15 parts of cement, the first admixture
40-60 parts, 8-12 parts of second mineral admixture, 5-8 parts of water and 0.5-1 parts of naphthalene series high-efficiency water-reducing agent.
Preferably, first admixture, including following component: middle sand, Bo Naite and stone.
Preferably, first admixture, is composed of the following components in parts by weight: middle sand 25-35%, Bo Naite 6-
10% and stone surplus.
Preferably, the second mineral admixture, including following component: aluminium oxide, magnesia and silica.
Preferably, the second mineral admixture, is composed of the following components in parts by weight: aluminium oxide 8-12%, magnesia 5-
8%, silica 55-70% and other impurities balances.
Preferably, other impurity can be any one in slag, industrial residue or construction waste.
Preferably, the soak, including following component: sodium metasilicate, aqueous polyurethane, zinc oxide and water.
Preferably, the soak is by following weight percent at being grouped as: sodium metasilicate 1-3%, aqueous polyurethane
1-5%, zinc oxide 0.1-0.2% and water surplus.
The invention has the beneficial effects that: the double low pressure steam curing techniques of tubular pole of the invention exempt from pressure steam with traditional
Maintaining process is compared, using two kinds of admixtures simultaneously be added in material, wherein the main component of the first admixture be middle sand,
Bo Naite and stone joined a small amount of Bo Naite on the basis of traditional aggregate, can be obviously improved the intensity of material；And
The main component of second mineral admixture is aluminium oxide, magnesia and silica, which can significantly improve the closely knit of tubular pole
Property；After maintenance early period, tubular pole is put into and impregnates in soak and conserves again, the outer layer for being conducive to tubular pole forms densification
Membranaceous material, the sea water corrosion resistant of tubular pole can be obviously improved.
Specific embodiment
Embodiment 1:
A kind of double low pressure steam curing techniques of tubular pole, comprising the following steps:
Cement, the first admixture and second mineral admixture are added in blender A, stir 65s, and water and naphthalene series high-efficiency is then added
Water-reducing agent stirs 105s；
The concrete that B obtains step A is spare after cloth, molding, tensioning processing；
C at normal temperatures and pressures, the tubular pole with mold is carried out to conserve 45min 80 DEG C of early periods；
After D demoulding tool, tubular pole is put into soak and impregnates 12min；
E conserves 5h for 80 DEG C at normal temperatures and pressures, by tubular pole progress again.
In the step A, the ratio of the parts by weight of each raw material is as follows: 12 parts of cement, 55 parts of the first admixture, second are mixed
10 parts of conjunction material, 7 parts of water and 0.7 part of naphthalene series high-efficiency water-reducing agent.
First admixture, is composed of the following components in parts by weight: middle sand 32%, Bo Naite 8% and stone surplus.
The second mineral admixture, is composed of the following components in parts by weight: aluminium oxide 9%, magnesia 7%, silica
60% and other impurities balances.
Other impurity are copper smelter slags.
The soak is by following weight percent at being grouped as: sodium metasilicate 1.5%, aqueous polyurethane 3%, oxidation
Zinc 0.15% and water surplus.
Embodiment 2:
A kind of double low pressure steam curing techniques of tubular pole, comprising the following steps:
Cement, the first admixture and second mineral admixture are added in blender A, stir 70s, and water and naphthalene series high-efficiency is then added
Water-reducing agent stirs 90s；
The concrete that B obtains step A is spare after cloth, molding, tensioning processing；
C at normal temperatures and pressures, the tubular pole with mold is carried out to conserve 60min 75 DEG C of early periods；
After D demoulding tool, tubular pole is put into soak and impregnates 10min；
E conserves 4h for 85 DEG C at normal temperatures and pressures, by tubular pole progress again.
Preferably, in the step A, the ratio of the parts by weight of each raw material is as follows: 10 parts of cement, the first admixture 60
Part, 8 parts of second mineral admixture, 8 parts of water and 0.5 part of naphthalene series high-efficiency water-reducing agent.
First admixture, is composed of the following components in parts by weight: middle sand 35%, Bo Naite 6% and stone surplus.
The second mineral admixture, is composed of the following components in parts by weight: aluminium oxide 8%, magnesia 8%, silica
55% and other impurities balances.
Other impurity are recycling refractory materials.
The soak is by following weight percent at being grouped as: sodium metasilicate 1%, aqueous polyurethane -5%, oxidation
Zinc 0.1% and water surplus.
Embodiment 3:
A kind of double low pressure steam curing techniques of tubular pole, comprising the following steps:
Cement, the first admixture and second mineral admixture are added in blender A, stir 60s, and water and naphthalene series high-efficiency is then added
Water-reducing agent stirs 120s；
The concrete that B obtains step A is spare after cloth, molding, tensioning processing；
C at normal temperatures and pressures, the tubular pole with mold is carried out to conserve 30min 85 DEG C of early periods；
After D demoulding tool, tubular pole is put into soak and impregnates 15min；
E conserves 6h for 75 DEG C at normal temperatures and pressures, by tubular pole progress again.
Preferably, in the step A, the ratio of the parts by weight of each raw material is as follows: 15 parts of cement, the first admixture 40
Part, 12 parts of second mineral admixture, 5 parts of water and 1 part of naphthalene series high-efficiency water-reducing agent.
First admixture, is composed of the following components in parts by weight: more than middle sand 25%, Bo Naite 10% and stone
Amount.
The second mineral admixture, is composed of the following components in parts by weight: aluminium oxide 12%, magnesia 5%, silica
70% and other impurities balances.
Other impurity are fosfosiderite slags.
The soak is by following weight percent at being grouped as: sodium metasilicate 3%, aqueous polyurethane 1%, zinc oxide
0.2% and water surplus.
Comparative example 1
By the Bo Naite removal in embodiment 1, remaining proportion and maintaining process are constant.
Comparative example 2
The step of soak in embodiment 1 is impregnated removes, remaining proportion and maintaining process are constant.
Intensity detection is carried out to tubular pole of the invention below and the resistance of concrete to chloride ion penetration detects, specific detection data is shown in Table
1。
Table 1: tubular pole intensity and the resistance of concrete to chloride ion penetration detection data；
| Compression strength 3d/MPa | Compression strength 28d/MPa | Chloride diffusion coefficient m2/s | |
| Embodiment 1 | 88.7 | 98.9 | 2.56*10-15 |
| Embodiment 2 | 87.5 | 98.8 | 2.62*10-15 |
| Embodiment 3 | 88.7 | 99.1 | 2.63*10-15 |
| Comparative example 1 | 75.2 | 82.1 | 5.32*10-12 |
| Comparative example 2 | 88.6 | 98.1 | 4.87*10-13 |
By the above test data it is recognised that intensity and resisting chloride ion penetration that Bo Naite can be obviously improved tubular pole are added in the present invention
Penetrating power.
Resisting sea water erosion performance test is carried out to tubular pole of the invention below.
Concrete summarizes invading for the chloride ion understood by seawater, magnesium ion and sulfate ion plasma in briny environment
Erosion,；Chloride ion is slowly into concrete under concentration gradient effect with diffusion mode, and sulfate ion and magnesium ion
=effect of this effect can be aggravated again, it tests under sea water intrusion in 30 days in detail below, the free chloride ion content in concrete
With the Strength Changes situation of 90 days concrete, specific test data is shown in Table 2.
Table 2: tubular pole resisting sea water erosion performance test data；
By the above test data it is recognised that in the present invention after soak impregnates, the sea water resistance of tubular pole can be obviously improved
Erosion performance.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of double low pressure steam curing techniques of tubular pole, which comprises the following steps:
Cement, the first admixture and second mineral admixture are added in blender A, stir 60-70s, and water and naphthalene system is then added
High efficiency water reducing agent stirs 90-120s；
The concrete that B obtains step A is spare after cloth, molding, tensioning processing；
C at normal temperatures and pressures, the tubular pole with mold is carried out to conserve 30-60min 75-85 DEG C of early period；
After D demoulding tool, tubular pole is put into soak and impregnates 10-15min；
E conserves 4-6h for 75-85 DEG C at normal temperatures and pressures, by tubular pole progress again.
2. the double low pressure steam curing techniques of tubular pole as described in claim 1, which is characterized in that in the step A, each raw material
Parts by weight ratio it is as follows: 10-15 parts of cement, 40-60 parts of the first admixture, 8-12 parts of second mineral admixture, 5-8 parts of water and naphthalene
0.5-1 parts of series high-efficiency water-reducing agent.
3. the double low pressure steam curing techniques of tubular pole as described in claim 1, which is characterized in that first admixture, packet
Include following component: middle sand, Bo Naite and stone.
4. the double low pressure steam curing techniques of tubular pole as claimed in claim 3, which is characterized in that first admixture, by
Following parts by weight at being grouped as: middle sand 25-35%, Bo Naite 6-10% and stone surplus.
5. the double low pressure steam curing techniques of tubular pole as described in claim 1, which is characterized in that the second mineral admixture, packet
Include following component: aluminium oxide, magnesia and silica.
6. the double low pressure steam curing techniques of tubular pole as claimed in claim 5, which is characterized in that the second mineral admixture, by
Following parts by weight at being grouped as: aluminium oxide 8-12%, magnesia 5-8%, silica 55-70% and other impurities balances.
7. the double low pressure steam curing techniques of tubular pole as claimed in claim 6, which is characterized in that other impurity can be
Any one in slag, industrial residue or construction waste.
8. the double low pressure steam curing techniques of tubular pole as described in claim 1, which is characterized in that the soak, including with
Lower ingredient: sodium metasilicate, aqueous polyurethane, zinc oxide and water.
9. the double low pressure steam curing techniques of tubular pole as claimed in claim 8, which is characterized in that the soak is by following heavy
Amount percentage at being grouped as: sodium metasilicate 1-3%, aqueous polyurethane 1-5%, zinc oxide 0.1-0.2% and water surplus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811169161.8A CN109437713A (en) | 2018-10-08 | 2018-10-08 | A kind of double low pressure steam curing techniques of tubular pole |
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| CN201811169161.8A CN109437713A (en) | 2018-10-08 | 2018-10-08 | A kind of double low pressure steam curing techniques of tubular pole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110467362A (en) * | 2019-08-21 | 2019-11-19 | 湖州乌米科技有限公司 | A kind of low cost explosion-proof cement and preparation method thereof |
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