CN106003396B - The non-evaporating health production. art of PHC pile tubes and its application - Google Patents
The non-evaporating health production. art of PHC pile tubes and its application Download PDFInfo
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- CN106003396B CN106003396B CN201610367851.9A CN201610367851A CN106003396B CN 106003396 B CN106003396 B CN 106003396B CN 201610367851 A CN201610367851 A CN 201610367851A CN 106003396 B CN106003396 B CN 106003396B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- 238000001704 evaporation Methods 0.000 title claims abstract description 30
- 230000036541 health Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 38
- 230000008569 process Effects 0.000 claims abstract description 23
- 238000012423 maintenance Methods 0.000 claims abstract description 20
- 238000005516 engineering process Methods 0.000 claims abstract description 17
- 239000004567 concrete Substances 0.000 claims description 44
- 238000003756 stirring Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000015271 coagulation Effects 0.000 claims description 4
- 238000005345 coagulation Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000004568 cement Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 239000002893 slag Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000004005 microsphere Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 description 2
- -1 Triethanolamine Lithium sulfate Chemical compound 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to Building technology, is related to non-evaporating health production. art and its application of a kind of PHC pile tubes.The present invention provides a kind of non-evaporating foster maintenance process of pile tube, comprises the following steps：1）By pile tube before the demoulding, insulated curing is carried out；2）Will be through step 1）Tubular pile demoulding after middle insulated curing, after demoulding, carry out natural curing.Invention further provides application of the above method in the production technology of PHC pile tubes and its non-evaporating health production. art of PHC pile tubes.A kind of non-evaporating health production. art of PHC pile tubes provided by the invention and its application, eliminate steam-cured link during stake processed, reduce pile tube manufacture difficulty and cost, and save the energy, be advantageous to environmental protection, the performance of the PHC pile tubes of preparation meets the requirements of specification, has very extensive application prospect.
Description
Technical field
The invention belongs to Building technology, is related to non-evaporating health production. art and its application of a kind of PHC pile tubes.
Background technology
With the high speed development of China's items engineering construction, PHC pile tubes because with good mechanical property and cost performance and
Extensive use is obtained in the pile foundation engineering of the engineering such as industry and civil buildings, port and pier, water conservancy, railway, bridge.Statistics money
Material shows that the demand of PHC pile tubes increases year by year, more than the 300000000 yuan linear meter(lin.m.)s of domestic large-scale pile tube enterprise production and marketing in 2011, annual value of production
30,000,000,000 yuan are breached, the output value of pile tube has accounted for more than the 50% of the national cement product industry output value.
The production technology of traditional PHC pile tubes need to use steam curing and high-pressure steaming and cultivating to carry out secondary steam curing process.High pressure is steamed
Supporting need to be under conditions of 170~180 DEG C of 0.95~1.0MPa of steam pressure and temperature, steam press maintenance 3~5 hours.Passed to overcome
Substantial amounts of energy resource consumption and high-pressure steaming and cultivating caused by PHC pile tube secondary high-pressure steam curing process unite to PHC tubular pile concrete performances
Influence, in recent years, develop and using exempt from pressure steam production technology carry out PHC pile tube productions.But high-pressure steaming and cultivating is steamed with pressure is exempted from
Technique is required to steam curing, need to consume mass energy, and have a negative impact to pile tube performance, it is therefore desirable to research and develop non-evaporating vapour
Maintaining process technology carries out PHC pile tube productions.But using steam curing is exempted from the early strong intensity of concrete can be caused to decline, need to develop and exempt from
Steam-cured PHC pile tubes production new technique, the effective technology measure such as curing pool insulated curing is taken, give full play to hydration heat of cement and support
The insulation effect in pond is protected, concrete early curing temperature is improved, early age strength of concrete is effectively improved, so as to ensure that concrete takes off
Mould time and template turnover.Therefore, new non-evaporating foster PHC pile tubes manufacturing technique method is developed to be of great significance.
The content of the invention
In view of the above the shortcomings that prior art, it is an object of the invention to provide a kind of non-evaporating health of PHC pile tubes
Production. art and its application, for overcoming existing pressure of exempting to steam technical problem present in production technology.
In order to achieve the above objects and other related objects, first aspect present invention provides a kind of non-evaporating foster maintenance side of pile tube
Method, comprise the following steps：
1) by pile tube before the demoulding, insulated curing is carried out；
2) after demoulding, natural curing will be carried out through the tubular pile demoulding after insulated curing in step 1).
Preferably, the pile tube is PHC pile tubes.
Preferably, in step 1), the insulated curing is carried out in curing in airtight condition pond.
Preferably, in step 1), the temperature of the insulated curing, according to pair between insulated curing time and environment temperature
It should be related to, be calculated by formula (I), (II), (III)：
The formula (I) is：Y1=9.73+0.99x；
The formula (II) is：Y2=12.92+0.92x；
The formula (III) is：Y3=14.82+0.89x；
In formula：X is average ambient temperature；Y1 is mean temperature in 12 hours curing pools；Y2 is to be put down in 24 hours curing pools
Equal temperature；Y3 is mean temperature in 48 hours curing pools.
It is highly preferred that the corresponding relation between the insulated curing time and environment temperature is as shown in table 1, it is：
When average ambient temperature (x) is 3 DEG C≤x≤15 DEG C, the insulated curing time is 48 hours；
When average ambient temperature (x) is 15 DEG C of ＜ x≤25 DEG C, the insulated curing time is 24 hours；
When average ambient temperature (x) is 25 DEG C of ＜ x≤40 DEG C, the insulated curing time is 12 hours.
The insulated curing time at a temperature of the varying environment of table 1
| Average ambient temperature (DEG C) | The insulated curing time (hour) |
| 3~15 | 48 |
| 15~25 | 24 |
| 25~40 | 12 |
Preferably, in step 1), the curing time in the insulated curing is 12-48h.
The insulated curing determines the relation of temperature and environment temperature in curing pool by testing, and can be become according to environment temperature
Change, it is determined that suitable curing pool curing time and temperature.The insulated curing is in the insulation of curing pool confined space and pile tube coagulation
Under the effect of soil-cement hydration heat, constant temperature increase in curing pool will be made, improve concrete demoulding intensity.
Preferably, in step 1), the insulated curing does not include steam curing.
Preferably, in step 2), the temperature of the natural curing is environment temperature.
Preferably, in step 2), the time of the natural curing is 1-20 days.
The natural curing time of the varying environment temperature of table 2
| Average ambient temperature (DEG C) | The natural curing time (my god) |
| 3~5 | 10-20 |
| 5~10 | 6-12 |
| 10~15 | 3-6 |
| 15~25 | 3-5 |
| 25~40 | 1-2 |
Preferably, in step 2), the corresponding relation between the natural curing time and environment temperature is as shown in table 2, is：
When average ambient temperature (x) is 3 DEG C≤x≤5 DEG C, the natural curing time is 10~20 days；
When average ambient temperature (x) is 5 DEG C of ＜ x≤10 DEG C, the natural curing time is 6~12 days；
When average ambient temperature (x) is 10 DEG C of ＜ x≤15 DEG C, the natural curing time is 3~6 days；
When average ambient temperature (x) is 15 DEG C of ＜ x≤25 DEG C, the natural curing time is 3~5 days；
When average ambient temperature (x) is 25 DEG C of ＜ x≤40 DEG C, the natural curing time is 1~2 day.
According to variation of ambient temperature, curing time is different for the natural curing, when temperature is relatively low, the natural curing time
Relative increase.
Preferably, in step 2), the natural curing does not include steam curing.
Preferably, step 1) or 2) in, the demoulding is that the conventional demoulding applies prestressing techniques in pile tube production technology.
The demoulding is that concrete tubular pile spins off from mould.
Second aspect of the present invention provides application of the above-mentioned maintenance process in the production technology of PHC pile tubes.
Third aspect present invention provides a kind of non-evaporating health production. art of PHC pile tubes, successively through concrete batching, concrete
Stirring, fabrication of reinforcing cage, concrete distributing, prestressed stretch-draw, centrifugal forming, demoulding maintenance processes, needed for preparing
PHC pile tubes, wherein, the demoulding maintenance processes, comprise the following steps：
A) by PHC pile tubes before the demoulding, insulated curing is carried out；
B) will be through step A) in PHC tubular pile demouldings after insulated curing, after demoulding, carry out natural curing.
Preferably, the concrete is conventional use of concrete, commercially available acquisition.
Preferably, in the non-evaporating health production. art of the PHC pile tubes, the concrete batching, concrete stirring, steel reinforcement cage
Making, concrete distributing, prestressed stretch-draw, centrifugal forming, it is the common process in PHC pile tube production technologies.It is specifically shown in figure
1。
Preferably, the concrete batching is by concrete each component material, is weighed by match ratio electronic scale, by not
After being transported to mixer with approach, it is stirred.
It is highly preferred that the match ratio, by kilogram number (kg/m of every cubic metre of addition3) meter, including following components：
Cement 400~500；
Admixture 60~110；
Fine aggregate 700~800；
Coarse aggregate 1100~1200；
Mixing water 120~140；
Additive 3~11.
It is further preferred that the cement is II type portland cement.The strength grade of the cement is 52.5.
It is further preferred that the admixture, by kilogram number (kg/m of every cubic metre of addition3) meter, including following components：
Slag powders 40~60；
Fly ash micro-sphere 20~50.
Most preferably, the slag powders are ground granulated blast furnace slag.The strength grade of the slag powders is S115.
Most preferably, the water demand ratio of the fly ash micro-sphere is 70~90wt%, and 7 days activity indexs are 80-90%.
It is further preferred that the fine aggregate is sand.The performance indications of the sand are：During modulus of fineness is 2.3~3.0
Sand, clay content are 0.2~1.5wt%, 0.1~0.5wt% of clod content.
It is further preferred that the coarse aggregate is rubble.The performance indications of the rubble are：5~25mm continuous gradings
Rubble (is formulated, 5~10mm and 16~25mm mass ratio are 2~4 by 5~10mm and 16~25 liang of grading：6~8), contain
Mud amount is 0.2~1wt%, and clod content is 0.05-0.2wt%.
It is further preferred that the mixing water is running water.
It is further preferred that the additive, by kilogram number (kg/m of every cubic metre of addition3) meter, including following components：
Water reducer 3~7；
Early strength agent 0~4.
Most preferably, the water reducer is high performance water reducing agent of polyocarboxy acid.
Most preferably, the early strength agent is selected from one or both of lithium sulfate or triethanolamine.
Preferably, the concrete stirring is to be stirred concrete each component using forced concrete mixer.
Preferably, the fabrication of reinforcing cage refers to after making steel reinforcement cage and pile crown respectively, carries out being assembled into PHC pile tube shapes
Band pile crown steel reinforcement cage, is put into mould.
Preferably, the concrete distributing is the band pile crown steel reinforcement cage that concrete is poured into PHC pile tubes shape in mould.
Preferably, the prestressed stretch-draw is to apply pulling force to deformed bar in advance in component so that in advance should be applied
Power is acted on punching block, and then applies stress to PHC tubular pile concretes after being stripped, and improves the bending resistance of component, rigidity and anti-
Fragility, increase the durability of component.
Preferably, the centrifugal forming is to be centrifuged the PHC tubular pile concretes after prestressed stretch-draw using centrifuge
Shaping.
Preferably, step A) in, the insulated curing is carried out in curing in airtight condition pond.
Preferably, step A) in, the temperature of the insulated curing, according to pair between insulated curing time and environment temperature
It should be related to, be calculated by formula (I), (II), (III)：
The formula (I) is：Y1=9.73+0.99x；
The formula (II) is：Y2=12.92+0.92x；
The formula (III) is：Y3=14.82+0.89x；
In formula：X is average ambient temperature；Y1 is mean temperature in 12 hours curing pools；Y2 is to be put down in 24 hours curing pools
Equal temperature；Y3 is mean temperature in 48 hours curing pools.
It is highly preferred that the corresponding relation between the insulated curing time and environment temperature is：
When average ambient temperature (x) is 3 DEG C≤x≤15 DEG C, the insulated curing time is 48 hours；
When average ambient temperature (x) is 15 DEG C of ＜ x≤25 DEG C, the insulated curing time is 24 hours；
When average ambient temperature (x) is 25 DEG C of ＜ x≤40 DEG C, the insulated curing time is 12 hours.
Preferably, step A) in, the curing time in the insulated curing is 12-48h.
The insulated curing determines the relation of temperature and environment temperature in curing pool by testing, and can be become according to environment temperature
Change, it is determined that suitable curing pool curing time and temperature.The insulated curing is in the insulation of curing pool confined space and pile tube coagulation
Under the effect of soil-cement hydration heat, constant temperature increase in curing pool will be made, improve concrete demoulding intensity.
Preferably, step A) in, the insulated curing does not include steam curing.
Preferably, step B) in, the temperature of the natural curing is environment temperature.
Preferably, step B) in, the time of the natural curing is 1-20 days.
Preferably, step B) in, the corresponding relation between the natural curing time and environment temperature is：
When average ambient temperature (x) is 3 DEG C≤x≤5 DEG C, the natural curing time is 10~20 days；
When average ambient temperature (x) is 5 DEG C of ＜ x≤10 DEG C, the natural curing time is 6~12 days；
When average ambient temperature (x) is 10 DEG C of ＜ x≤15 DEG C, the natural curing time is 3~6 days；
When average ambient temperature (x) is 15 DEG C of ＜ x≤25 DEG C, the natural curing time is 3~5 days；
When average ambient temperature (x) is 25 DEG C of ＜ x≤40 DEG C, the natural curing time is 1~2 day.
According to variation of ambient temperature, curing time is different for the natural curing, when temperature is relatively low, the natural curing time
Relative increase.
Preferably, step B) in, the natural curing does not include steam curing.
As described above, non-evaporating health production. art and its application of a kind of PHC pile tubes of the present invention, systematically solve PHC pipes
The Related Technical Issues of the non-evaporating health production. art of stake, have the advantages that：
(1) present invention is ensureing PHC pile tube physics by the research to PHC tubular pile concretes match ratio and conservation system
Mechanical property, durability and on the premise of the production time, steam curing is not used to produce PHC pile tubes, so as to save a large amount of energy
Consumption, thoroughly change PHC pile tube high energy consumption history, realize PHC pile tube technique new breakthroughs.
(2) performance for the non-evaporating foster PHC pile tubes that the present invention develops production meets the requirements of specification, non-evaporating to support
The durability such as the precenting chlorate corrosion performances of PHC tubular pile concretes, frost resistance are higher, and the product quality of PHC pile tubes has been effectively ensured,
The environment higher especially suitable for life requirements such as ocean engineering and the north.
(3) PHC tubular pile concretes fragility produced by the invention makes moderate progress, and ensures performance and beating property.
(4) non-evaporating foster PHC pile tubes produced by the invention eliminate steam-cured link during stake processed, reduce pile tube system
Make difficulty and cost, and save the energy, so as to be advantageous to environmental protection, it has very extensive application prospect.
Brief description of the drawings
Fig. 1 is shown as the non-evaporating health production. art schematic flow sheet of the PHC pile tubes of the present invention.
Embodiment
The present invention is expanded on further with reference to specific embodiment, it should be appreciated that these embodiments are merely to illustrate the present invention
Rather than limit the scope of the invention.
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
It should be clear that in the following example not specifically dated process equipment or device using conventional equipment in the art or
Device；All pressure values and scope are all referring to relative pressure.
In addition, it is to be understood that one or more method and steps mentioned in the present invention do not repel before and after the combination step
There can also be other method step or other method step can also be inserted between the step of these are specifically mentioned, unless separately
It is described；It should also be understood that the combination annexation between one or more equipment/devices mentioned in the present invention is not repelled
Can also have other equipment/device before and after the unit equipment/device or two equipment/devices specifically mentioning at these it
Between can also insert other equipment/device, unless otherwise indicated.Moreover, unless otherwise indicated, the numbering of various method steps is only
Differentiate the convenient tool of various method steps, rather than ordering or the enforceable model of the restriction present invention for limitation various method steps
Enclose, its relativeness is altered or modified, and in the case where changing technology contents without essence, when being also considered as, the present invention is enforceable
Category.
As shown in figure 1, the invention provides a kind of non-evaporating health production. art of PHC pile tubes, successively through concrete batching, mixed
Solidifying soil stirring, fabrication of reinforcing cage, concrete distributing, prestressed stretch-draw, centrifugal forming, demoulding maintenance processes, so as to prepare
Required PHC pile tubes, wherein, the demoulding maintenance processes, comprise the following steps：
(1) by PHC pile tubes before the demoulding, insulated curing is carried out；
(2) will be through step A) in PHC pile tubes after insulated curing, after demoulding, carry out natural curing.
Wherein, in the non-evaporating health production. art of PHC pile tubes, concrete batching, concrete stirring, fabrication of reinforcing cage, coagulation
The tensioning of handwoven cloth material, centrifugal forming, it is the common process in PHC pile tube production technologies.The demoulding being stripped in maintenance processes is pipe
The conventional demoulding applies prestressing techniques in stake production technology.
Insulated curing is carried out in curing in airtight condition pond.Curing time in insulated curing is 12-48h.
The temperature of insulated curing, according to the corresponding relation between insulated curing time and environment temperature, by formula (I),
(II), (III) is calculated：
Formula (I) is：Y1=9.73+0.99x；
Formula (II) is：Y2=12.92+0.92x；
Formula (III) is：Y3=14.82+0.89x；
In formula：X is average ambient temperature；Y1 is mean temperature in 12 hours curing pools；Y2 is to be put down in 24 hours curing pools
Equal temperature；Y3 is mean temperature in 48 hours curing pools.
Corresponding relation between the insulated curing time and environment temperature is：
When average ambient temperature (x) is 3 DEG C≤x≤15 DEG C, the insulated curing time is 48 hours；
When average ambient temperature (x) is 15 DEG C of ＜ x≤25 DEG C, the insulated curing time is 24 hours；
When average ambient temperature (x) is 25 DEG C of ＜ x≤35 DEG C, the insulated curing time is 12 hours.
The temperature of natural curing is environment temperature.The time of natural curing is 1-20 days.
Corresponding relation between natural curing time and environment temperature is：
When average ambient temperature (x) is 3 DEG C≤x≤5 DEG C, the natural curing time is 10~20 days；
When average ambient temperature (x) is 5 DEG C of ＜ x≤10 DEG C, the natural curing time is 6~12 days；
When average ambient temperature (x) is 10 DEG C of ＜ x≤15 DEG C, the natural curing time is 3~6 days；
When average ambient temperature (x) is 15 DEG C of ＜ x≤25 DEG C, the natural curing time is 3~5 days；
When average ambient temperature (x) is 25 DEG C of ＜ x≤40 DEG C, the natural curing time is 1~2 day.
Insulated curing and natural curing do not include steam curing.
Embodiment 1
1st, raw material
Cement：Strength grade is 52.5 II type portland cements.
Slag powders：Strength grade is S115 ground granulated blast furnace slag.
Fly ash micro-sphere：Water demand ratio is 80wt%, and 7 days activity indexs are 85%.
Sand：Modulus of fineness be 2.7 middle sand, clay content 0.5wt%, clod content 0.2wt%.
Rubble：The rubble of 5-25mm continuous gradings (is formulated, 5-10mm and 16- by 5-10mm and the gradings of 16-25 two
25mm mass ratio is 3：7), clay content 0.5wt%, clod content are 0.1wt%.
Water reducer：HP400 early-strength high-efficiency water-reducing agent of poly-carboxylic acid is stepped on by Shanghai China.
Mixing water：Using city tap-water.
Early strength agent one：Lithium sulfate.
Early strength agent two：Triethanolamine.
2nd, concrete mix (being shown in Table 3)
The non-evaporating curing concrete match ratio (kg/m of table 33)
| Numbering | Cement | Miberal powder | Microballon | Sand | Rubble | Water | Water reducer | Triethanolamine | Lithium sulfate |
| Match ratio one | 441 | 47 | 31 | 711 | 1160 | 130 | 4.15 | - | - |
| Match ratio two | 441 | 47 | 31 | 711 | 1160 | 130 | 5.19 | 0.21 | 3.1 |
3rd, PHC pile tubes make and conserved
According to the invention provides a kind of non-evaporating health production. art of PHC pile tubes, as shown in figure 1, successively through concrete matched
Material, concrete stirring, fabrication of reinforcing cage, concrete distributing, prestressed stretch-draw, centrifugal forming, demoulding maintenance processes, so as to prepare
PHC pile tubes sample needed for acquisition.Wherein, maintenance processes are stripped before the demoulding, carry out insulated curing, after demoulding, carry out nature
Maintenance, curing condition is referring to table 1-2.
4th, test result
The PHC pile tube samples 1-7 prepared associated production condition (such as concrete mix, insulated curing time, temperature
Degree and natural curing time) 4 are shown in Table, the PHC pile tube samples 1-7 prepared performance parameter index (such as demoulding strength, goes out
Factory's intensity) also it is shown in Table 4.
Table 4
From table 4, it can be seen that by using curing pool insulated curing, temperature in curing pool is set, effectively improves concrete
Early strength, under the curing pool insulation effect of 12~48 hours, PHC tubular pile concrete demoulding strengths are all higher than 45MPa mass
Control requires.In addition, being directed to varying environment temperature, using the different natural curing times, concrete strength is continuously increased, concrete
Intensity reaches 80MPa and dispatched from the factory intensity requirement.
So the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (7)
1. a kind of non-evaporating foster maintenance process of pile tube, comprises the following steps：
1) by pile tube before the demoulding, insulated curing is carried out；
2) after demoulding, natural curing will be carried out through the tubular pile demoulding after insulated curing in step 1)；
In step 1), the insulated curing is carried out in curing in airtight condition pond；
In step 1), the temperature of the insulated curing, according to the corresponding relation between insulated curing time and environment temperature, by public affairs
Formula (I), (II), (III) are calculated：
The formula (I) is：Y1=9.73+0.99x；
The formula (II) is：Y2=12.92+0.92x；
The formula (III) is：Y3=14.82+0.89x；
In formula：X is average ambient temperature；Y1 is mean temperature in 12 hours curing pools；Y2 is average temperature in 24 hours curing pools
Degree；Y3 is mean temperature in 48 hours curing pools.
2. the non-evaporating foster maintenance process of pile tube according to claim 1, it is characterised in that the insulated curing time and ring
Corresponding relation between the temperature of border is：
When average ambient temperature x is 3 DEG C≤x≤15 DEG C, the insulated curing time is 48 hours；
When average ambient temperature x is 15 DEG C of ＜ x≤25 DEG C, the insulated curing time is 24 hours；
When average ambient temperature x is 25 DEG C of ＜ x≤40 DEG C, the insulated curing time is 12 hours.
3. the non-evaporating foster maintenance process of pile tube according to claim 1, it is characterised in that in step 1), the insulation is supported
Curing time in shield is 12-48h.
4. the non-evaporating foster maintenance process of pile tube according to claim 1, it is characterised in that described to support naturally in step 2)
The time of shield is 1-20 days.
5. the non-evaporating foster maintenance process of pile tube according to claim 1, it is characterised in that described to support naturally in step 2)
Shield the time and environment temperature between corresponding relation be：
When average ambient temperature (x) is 3 DEG C≤x≤5 DEG C, the natural curing time is 10~20 days；
When average ambient temperature (x) is 5 DEG C of ＜ x≤10 DEG C, the natural curing time is 6~12 days；
When average ambient temperature (x) is 10 DEG C of ＜ x≤15 DEG C, the natural curing time is 3~6 days；
When average ambient temperature (x) is 15 DEG C of ＜ x≤25 DEG C, the natural curing time is 3~5 days；
When average ambient temperature (x) is 25 DEG C of ＜ x≤40 DEG C, the natural curing time is 1~2 day.
6. according to any described non-evaporating foster maintenance processes of pile tube of claim 1-5 answering in the production technology of PHC pile tubes
With.
A kind of 7. non-evaporating health production. art of PHC pile tubes, successively through concrete batching, concrete stirring, fabrication of reinforcing cage, coagulation
Handwoven cloth material, prestressed stretch-draw, centrifugal forming, demoulding maintenance processes, so as to prepare required PHC pile tubes, wherein, the demoulding
Maintenance processes, comprise the following steps：
A) by PHC pile tubes before the demoulding, insulated curing is carried out；
B) will be through step A) in PHC tubular pile demouldings after insulated curing, after demoulding, carry out natural curing；
Step A) in, the insulated curing is carried out in curing in airtight condition pond；
Step A) in, the temperature of the insulated curing, according to the corresponding relation between insulated curing time and environment temperature, by public affairs
Formula (I), (II), (III) are calculated：
The formula (I) is：Y1=9.73+0.99x；
The formula (II) is：Y2=12.92+0.92x；
The formula (III) is：Y3=14.82+0.89x；
In formula：X is average ambient temperature；Y1 is mean temperature in 12 hours curing pools；Y2 is average temperature in 24 hours curing pools
Degree；Y3 is mean temperature in 48 hours curing pools.
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| CN108162154B (en) * | 2017-12-20 | 2020-01-14 | 中交第三航务工程局有限公司 | Steam curing-free maintenance method and production process for large tubular pile |
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| CN109397510A (en) * | 2018-10-25 | 2019-03-01 | 双威管桩（珠海）有限公司 | One kind is exempted to press steam-curing concrete PHC tubular pole and preparation method thereof |
| CN110281380B (en) * | 2019-07-04 | 2021-04-27 | 福建省大地管桩有限公司 | Manufacturing process of directional coagulation pipe pile |
| CN110818365A (en) * | 2019-12-24 | 2020-02-21 | 广东瑞安科技实业有限公司 | Non-autoclaved and non-autoclaved prestressed pipe pile concrete and preparation and maintenance process thereof |
| CN113582719A (en) * | 2021-06-25 | 2021-11-02 | 广东三和管桩股份有限公司 | High-temperature maintenance method and preparation method of tubular pile |
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