CN103481364A - Preparation method of high-intensity thin-wall square pile - Google Patents
Preparation method of high-intensity thin-wall square pile Download PDFInfo
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- CN103481364A CN103481364A CN201310420305.3A CN201310420305A CN103481364A CN 103481364 A CN103481364 A CN 103481364A CN 201310420305 A CN201310420305 A CN 201310420305A CN 103481364 A CN103481364 A CN 103481364A
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- vacuum
- vacuum chamber
- time
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- per minute
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- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 239000004568 cement Substances 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 239000004576 sand Substances 0.000 claims abstract description 7
- 235000021050 feed intake Nutrition 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 8
- 239000010881 fly ash Substances 0.000 claims description 8
- 239000003351 stiffener Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 6
- 229910052753 mercury Inorganic materials 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 235000019628 coolness Nutrition 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 3
- 239000003245 coal Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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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
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
- B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
- B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
- B28B21/30—Centrifugal moulding
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a preparation method of a high-intensity thin-wall square pile. The method includes preparing materials which comprise 11-13% of pulverized coal, 9-11% of cement, 24-26% of sand, 5-7% of steel fiber and 45-50% of water; (2), manufacturing a steel wire framework; (3), setting a form board; (4), adding the materials for the first time; (5), vacuumizing for the first time; (6) adding the materials for the second time; (7) vacuumizing for the second time; (8) curing with steam; (9) demoulding; (10) curing with hot water.
Description
Technical field
The present invention relates to building material field, particularly a kind of preparation method of high intensity thinner tube square pile.
Background technology
The high intensity thinner tube square pile is rested after making, the problems such as fine fisssure usually appear during resting, trace it to its cause is because cement, fully after aquation, producing certain expansion, if expansion stable period is shifted to an earlier date, obviously can obviously reduce the mass defect of square pile.In addition, the part square pile can not reach requirement because packing causes intensity not, and the packing and the impermeability that how to improve square pile are also the problems that will solve in square pile manufacturing process.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of preparation method of high intensity thinner tube square pile.
Preparation process comprises:
(1) batching
Raw material choose cement, flyash, sand, steel fibre, water.Proportioning is as follows: the flyash consumption is 11%～13%, and cement consumption is 9%～11%, and the sand consumption is 24%～26%, and steel fibre is 5%～7%, and water consumption is 45%～50%.
Add in raw material of the present invention that steel fibre can improve that it is shock-resistant greatly, endurance and anti-seismic performance, make it also there is larger remaining support force after reaching failing load.
(2) make steel-wire carcass
(3) install template
Adopt special-purpose rigid template.Vacuum chamber base plate inboard arranges filter cloth, the vacuum chamber base plate adopts the steel plate of 6-8mm thickness, the vacuum chamber base plate arranges the water outlet circular hole, the water outlet Circularhole diameter is 6-8mm, water outlet circular hole setting space is 150-200mm, between vacuum chamber base plate and vacuum chamber cover plate, ribbed stiffener is set, ribbed stiffener adopts channel bar, the channel bar height is 30-40mm, the vacuum chamber cover plate adopts the steel plate of 6-8mm thickness, vacuum chamber cover plate arranged outside suction nozzle, and the suction nozzle diameter is 8-12mm, the suction nozzle both sides arrange the angle steel rest, and filter cloth and vacuum chamber base plate sealing part adopt the rubber seal sealing.
(4) feed intake for the first time
Stake mould low-speed running 3～5min, per minute kind 120 turns, middling speed running 2～3min, per minute kind 200 turns.4～the 5min that runs up, per minute kind 300 turns.Feed intake for the first time and want evenly, THICKNESS CONTROL is at 3cm, strikes off laitance after centrifugal.
(5) application of vacuum for the first time
Start vavuum pump after compound is centrifugal and carry out application of vacuum, vacuum processing time is 5/min, and vacuum adopts 750～760mm mercury column.
In the vacuum dehydration process, because of the differential pressure action that negative pressure of vacuum produces, compound produces volume contraction, forms more fine and close structure, and its physical and mechanical property also obtains corresponding improvement.
In addition, the present invention replaces part of cement using flyash as active mixture, but the maximum characteristics of flyash are that hydration rate is slow, and the time that produces intensity is more late.And the present invention is directed to this characteristics, and adopt application of vacuum, to improve exactly the early strength of square pile, reach the purpose of saving cement.
(6) feed intake for the second time
Stake mould low-speed running 2～3min, per minute kind 140 turns, middling speed running 3～4min, per minute kind 280 turns.10～the 12min that runs up, per minute kind 400 turns.
Owing to having adopted, feed intake for twice, in square pile, the through hole major part is cut off, and the anti-permeability performance of square pile significantly improves.Twice feeding method is very significant to the impermeability that improves square pile.
(7) application of vacuum for the second time
Start vavuum pump after compound is centrifugal and carry out application of vacuum, vacuum processing time is 10/min, and vacuum adopts 730～740mm mercury column.
Suitably reduce vacuum in vacuum chamber during application of vacuum for the second time, this is that vacuum is conducive to the movement of particles of aggregates after reducing, thereby reaches the closely knit uniform effect of mixture because mobility after the mixture dehydration reduces.
(8) steam curing
The steam curing temperature is 50 ℃～55 ℃, and the time is 1h.
(9) demoulding
After reaching 8～12MPa, square pile intensity carries out the demoulding.
(10) hot water maintenance
The hot water maintenance divides two stages, and the first stage, normal temperature is warming up to 90 ℃, keeps 1.5h constant temperature; Second stage, carry out maintenance by 90 ℃ of fast coolings to 45 ℃～50 ℃.
In the situation that demoulding strength is suitable, water supports that temperature is more high more is conducive to the abundant aquation of cement and the quickening of reaction speed, thereby makes expansion stable period in advance.
The made square pile of the present invention has advantages of that mechanical property is good, impervious strong, has application prospect preferably.
The accompanying drawing explanation
The two-sided envelope mould of Fig. 1 open type schematic diagram.
Accompanying drawing sign: 1, filter cloth, 2, the vacuum chamber base plate, 3, ribbed stiffener, 4, the vacuum chamber cover plate, 5, suction nozzle, 6, the angle steel rest, 7, rubber seal.
The specific embodiment
Below in conjunction with accompanying drawing, the present embodiment is described in detail.
The present embodiment preparation process comprises:
(1) batching
Raw material choose cement, flyash, sand, steel fibre, water.Proportioning is as follows: the flyash consumption is 11%～13%, and cement consumption is 9%～11%, and the sand consumption is 24%～26%, and steel fibre is 5%～7%, and water consumption is 45%～50%.
(2) make steel-wire carcass
(3) install template
Adopt special-purpose rigid template.Rigid template comprises filter cloth 1, vacuum chamber base plate 2, ribbed stiffener 3, vacuum chamber cover plate 4, suction nozzle 5, angle steel rest 6, rubber seal 7, vacuum chamber base plate 2 inboards arrange filter cloth 1, vacuum chamber base plate 2 adopts the steel plate of 8mm thickness, vacuum chamber base plate 2 arranges the water outlet circular hole, the water outlet Circularhole diameter is 8mm, water outlet circular hole setting space is 180mm, between vacuum chamber base plate 2 and vacuum chamber cover plate 4, ribbed stiffener 3 is set, ribbed stiffener 3 adopts channel bar, the channel bar height is 35mm, vacuum chamber cover plate 4 adopts the steel plate of 8mm thickness, vacuum chamber cover plate 4 arranged outside suction nozzles 5, suction nozzle 5 diameters are 10mm, suction nozzle 5 both sides arrange angle steel rest 6, filter cloth 1 and vacuum chamber base plate 2 sealing parts adopt rubber seal 7 sealings.
(4) feed intake for the first time
Stake mould low-speed running 3～5min, per minute kind 120 turns, middling speed running 2～3min, per minute kind 200 turns.4～the 5min that runs up, per minute kind 300 turns.Feed intake for the first time and want evenly, THICKNESS CONTROL is at 3cm, strikes off laitance after centrifugal.
(5) application of vacuum for the first time
Start vavuum pump after compound is centrifugal and carry out application of vacuum, vacuum processing time is 5/min, and vacuum adopts 750～760mm mercury column.
(6) feed intake for the second time
Stake mould low-speed running 2～3min, per minute kind 140 turns, middling speed running 3～4min, per minute kind 280 turns.10～the 12min that runs up, per minute kind 400 turns.
(7) application of vacuum for the second time
Start vavuum pump after compound is centrifugal and carry out application of vacuum, vacuum processing time is 10/min, and vacuum adopts 730～740mm mercury column.
(8) steam curing
The steam curing temperature is 50 ℃～55 ℃, and the time is 1h.
(9) demoulding
After reaching 8～12MPa, square pile intensity carries out the demoulding.
(10) hot water maintenance
The hot water maintenance divides two stages, and the first stage, normal temperature is warming up to 90 ℃, keeps 1.5h constant temperature; Second stage, carry out maintenance by 90 ℃ of fast coolings to 45 ℃～50 ℃.
Claims (1)
1. the preparation method of a high intensity thinner tube square pile is characterized in that preparation process comprises:
(1) batching
Raw material choose cement, flyash, sand, steel fibre, water; Proportioning is as follows: the flyash consumption is 11%～13%, and cement consumption is 9%～11%, and the sand consumption is 24%～26%, and steel fibre is 5%～7%, and water consumption is 45%～50%;
(2) make steel-wire carcass
(3) install template
Adopt special-purpose rigid template; Vacuum chamber base plate inboard arranges filter cloth, the vacuum chamber base plate adopts the steel plate of 6-8mm thickness, the vacuum chamber base plate arranges the water outlet circular hole, the water outlet Circularhole diameter is 6-8mm, water outlet circular hole setting space is 150-200mm, between vacuum chamber base plate and vacuum chamber cover plate, ribbed stiffener is set, ribbed stiffener adopts channel bar, the channel bar height is 30-40mm, the vacuum chamber cover plate adopts the steel plate of 6-8mm thickness, vacuum chamber cover plate arranged outside suction nozzle, and the suction nozzle diameter is 8-12mm, the suction nozzle both sides arrange the angle steel rest, and filter cloth and vacuum chamber base plate sealing part adopt the rubber gasket sealing;
(4) feed intake for the first time
Stake mould low-speed running 3～5min, per minute kind 120 turns, middling speed running 2～3min, per minute kind 200 turns; 4～the 5min that runs up, per minute kind 300 turns; Feed intake for the first time and want evenly, THICKNESS CONTROL is at 3cm, strikes off laitance after centrifugal;
(5) application of vacuum for the first time
Start vavuum pump after compound is centrifugal and carry out application of vacuum, vacuum processing time is 5/min, and vacuum adopts 750～760mm mercury column;
(6) feed intake for the second time
Stake mould low-speed running 2～3min, per minute kind 140 turns, middling speed running 3～4min, per minute kind 280 turns; 10～the 12min that runs up, per minute kind 400 turns;
(7) application of vacuum for the second time
Start vavuum pump after compound is centrifugal and carry out application of vacuum, vacuum processing time is 10/min, and vacuum adopts 730～740mm mercury column;
(8) steam curing
The steam curing temperature is 50 ℃～55 ℃, and the time is 1h;
(9) demoulding
After reaching 8～12MPa, square pile intensity carries out the demoulding;
(10) hot water maintenance
The hot water maintenance divides two stages, and the first stage, normal temperature is warming up to 90 ℃, keeps 1.5h constant temperature; Second stage, carry out maintenance by 90 ℃ of fast coolings to 45 ℃～50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310420305.3A CN103481364B (en) | 2013-09-10 | 2013-09-10 | The preparation method of high-intensity thin-wall square pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310420305.3A CN103481364B (en) | 2013-09-10 | 2013-09-10 | The preparation method of high-intensity thin-wall square pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103481364A true CN103481364A (en) | 2014-01-01 |
| CN103481364B CN103481364B (en) | 2016-01-20 |
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| CN201310420305.3A Active CN103481364B (en) | 2013-09-10 | 2013-09-10 | The preparation method of high-intensity thin-wall square pile |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100821272B1 (en) * | 2007-08-31 | 2008-04-11 | 정영환 | An apparatus and method for concrete moulding using vacuum and centrifugal method without outer mould |
| CN101914914A (en) * | 2010-08-19 | 2010-12-15 | 上海中技桩业股份有限公司 | Concrete pre-stress hollow square pile and molding method thereof |
| CN102343626A (en) * | 2011-09-15 | 2012-02-08 | 江苏固丰管桩集团有限公司 | Concrete square pile die |
| CN102366973A (en) * | 2011-09-20 | 2012-03-07 | 国鼎(南通)管桩有限公司 | Vacuum chuck de-molding device for concrete tubular pile |
| CN102776879A (en) * | 2012-08-01 | 2012-11-14 | 天津建城基业集团有限公司 | Concrete centrifugal square pile and forming mold thereof |
| CN202781423U (en) * | 2012-06-29 | 2013-03-13 | 上海中技桩业股份有限公司 | Novel centrifugal shaping mold set for concrete hollow square piles |
-
2013
- 2013-09-10 CN CN201310420305.3A patent/CN103481364B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100821272B1 (en) * | 2007-08-31 | 2008-04-11 | 정영환 | An apparatus and method for concrete moulding using vacuum and centrifugal method without outer mould |
| CN101914914A (en) * | 2010-08-19 | 2010-12-15 | 上海中技桩业股份有限公司 | Concrete pre-stress hollow square pile and molding method thereof |
| CN102343626A (en) * | 2011-09-15 | 2012-02-08 | 江苏固丰管桩集团有限公司 | Concrete square pile die |
| CN102366973A (en) * | 2011-09-20 | 2012-03-07 | 国鼎(南通)管桩有限公司 | Vacuum chuck de-molding device for concrete tubular pile |
| CN202781423U (en) * | 2012-06-29 | 2013-03-13 | 上海中技桩业股份有限公司 | Novel centrifugal shaping mold set for concrete hollow square piles |
| CN102776879A (en) * | 2012-08-01 | 2012-11-14 | 天津建城基业集团有限公司 | Concrete centrifugal square pile and forming mold thereof |
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| Publication number | Publication date |
|---|---|
| CN103481364B (en) | 2016-01-20 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20191203 Address after: 221000 No.1, Zhangjiagang East Road, Yitang Town, Pizhou City, Xuzhou City, Jiangsu Province Patentee after: Pizhou Binhe SME Management Service Co., Ltd. Address before: 325025, No. 26, North Sichuan Road, Tianhe street, Wenzhou economic and Technological Development Zone, Wenzhou, Zhejiang Patentee before: Ye Xiangxiong |
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Effective date of registration: 20210204 Address after: 222111 Jinxing South Road, Daxingzhuang village, Haitou Town, Ganyu District, Lianyungang City, Jiangsu Province Patentee after: Lianyungang Lianda Pipe Pile Engineering Co.,Ltd. Address before: No.1, Zhangjiagang East Road, Yitang Town, Pizhou City, Xuzhou City, Jiangsu Province Patentee before: Pizhou Binhe SME Management Service Co.,Ltd. |
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