CN103737708A - Maintenance method of solid square pile - Google Patents
Maintenance method of solid square pile Download PDFInfo
- Publication number
- CN103737708A CN103737708A CN201410004142.5A CN201410004142A CN103737708A CN 103737708 A CN103737708 A CN 103737708A CN 201410004142 A CN201410004142 A CN 201410004142A CN 103737708 A CN103737708 A CN 103737708A
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- Prior art keywords
- square pile
- maintenance
- temperature
- time
- autoclave
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- 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
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
The invention provides a maintenance method of a solid square pile. The maintenance method of the solid square pile includes a first stage steam maintenance technology and a second stage steam maintenance technology, wherein maintenance of the first stage steam maintenance technology includes three stages of temperature raising, constant temperature maintaining and temperature reducing, and maintenance of the second stage steam maintenance technology includes four stages of pressure raising, constant pressure maintaining, pressure reducing and temperature reducing. The maintenance method of the solid square pile is short in time and high in efficiency, and accordingly improves turnover rate of a mold, saves investment of manpower resources, and can further improve strength of concrete.
Description
Technical field
The present invention relates to a kind of maintenance process of solid square pile.
Background technology
According to the production code requirement of solid square pile, the intensity of general pile concrete is between C30-C50, because the production of square pile is at present mainly to adopt normal temperature steam curing or natural curing, because time partially long (natural curing needs more than 28 days) and the turnover rate of mould of maintenance are on the low side, cause the production output of square pile on the low side, personnel drop into larger, cause the economic benefit of manufacturer poor.In industry, also there is part producer also carrying out HTHP maintenance test at present, but because the control to pressure and temperature is improper, cause solid square pile to have more contraction fissure and diaclase, do not reach the designing requirement of product.
Summary of the invention
The technical problem to be solved in the present invention, is to provide a kind of maintenance process of solid square pile, and the time is short, efficiency is high, thereby has improved the turnover rate of mould, has saved the input of human resources, also can further improve concrete intensity.
The present invention is achieved in that a kind of maintenance process of solid square pile, it is characterized in that: comprise
First stage steam curing process: after the vibrations of solid square pile cloth, square pile is hung in to steam-cured pond and carry out preliminary maintenance, preliminary maintenance comprises intensification, constant temperature and cooling three phases; Wherein, the time of temperature rise period is 1.5～2.0 hours, and programming rate is 15～20 ℃/h, and the programming rate of temperature rise period is front slow rear fast; The time in constant temperature stage is 3.0～3.5 hours, and it is 80～85 ℃ that temperature is controlled; The time of temperature-fall period is 0.5～1.0 hour;
Second stage steam pressure technique: first stage steam curing is finished and the square pile of the demoulding proceeds to autoclave and carries out secondary maintenance, comprise boost, constant voltage, step-down and cooling four-stage; Wherein, the time of boost phase is 1.0～2.0 hours, and the rate of rise is 0.05～0.10MPa/ hour, and the rate of rise is front slow rear fast; The time of constant-voltage phase is 2.5～.5 hour, and it is 0.15～0.20MPa that pressure is controlled, and temperature control is 100～110 ℃; The time of buck stage is 1.0～2.0 hours, and pressure decay rate is 0.05～0.10MPa/ hour, and pressure decay rate is front slow rear fast; The time of temperature-fall period is 1.0 hours.
Further, in described second stage steam curing process, it is to adopt entrucking to enter the mode of still that square pile is proceeded to autoclave, and the sleeper on still car or parallels need keep straight line with the suspension ring position of square pile.
Further, described autoclave domestic demand enters a certain amount of water, and the height of water level is between 20～35cm.
Further, the inventive method also comprises phase III steam pressure technique: the square pile after second stage steam pressure finishes, proceed to stockyard and deposit in, and between storage period square pile without watering.。
Further, when described autoclave is a plurality of, the Yu Shui of arbitrary autoclave and remaining vapour are poured in the contiguous autoclave arranging and carry out secondary utilization.
Tool of the present invention has the following advantages: the present invention is on the steam-cured basis of existing normal temperature, carry out the temperature and time adjustment of normal temperature steam curing conservation, and when proceeding to autoclave and carrying out autoclave curing, the pressure of steam, temperature, time etc. are adjusted accordingly, make the saving to a great extent that obtains total time of maintenance, thereby improved the turnover rate of mould, saved the input of human resources, due to production efficiency and the shortening of a stake time, significantly reduced producing and stack the demand in place; And owing to having adopted normal temperature steam curing and autoclave curing, further improved concrete intensity.
The specific embodiment
The maintenance process of solid square pile of the present invention, comprising:
First stage steam curing process: after the vibrations of solid square pile cloth, square pile is hung in to steam-cured pond and carry out preliminary maintenance, preliminary maintenance comprises intensification, constant temperature and cooling three phases; Wherein, the time of temperature rise period is 1.5～2.0 hours, and programming rate is 15～20 ℃/h, and the programming rate of temperature rise period is front fast after slow, so as not to too fast owing to heating up, cause concrete to occur a large amount of cracks; The time in constant temperature stage is 3.0～3.5 hours, and it is 80～85 ℃ that temperature is controlled; The time of temperature-fall period is 0.5～1.0 hour;
Second stage steam pressure technique: first stage steam curing is finished and the square pile of the demoulding proceeds to autoclave and carries out secondary maintenance, comprise boost, constant voltage, step-down and cooling four-stage; Wherein, the time of boost phase is 1.0～2.0 hours, and the rate of rise is 0.05～0.10MPa/ hour, and the rate of rise is front slow rear fast; The time of constant-voltage phase is 2.5～.5 hour, and it is 0.15～0.20MPa that pressure is controlled, and temperature control is 100～110 ℃; The time of buck stage is 1.0～2.0 hours, and pressure decay rate is 0.05～0.10MPa/ hour, and pressure decay rate is front slow rear fast; The time of temperature-fall period is 1.0 hours, and cooling can adopt opens the cooling of still door, just can anchor after cooling.
In described second stage steam curing process, it is to adopt entrucking to enter the mode of still that square pile is proceeded to autoclave, and the sleeper on still car or parallels need keep straight line with the suspension ring position of square pile, avoid span excessive, causes the bottom square pile to be split by pressure ring.
Described autoclave domestic demand enters a certain amount of water, and the height of water level is between 20～35cm, to improve the water saturation degree of steam, avoids occurring contraction fissure or diaclase because the water deficient in steam causes solid square pile in maintenance processes.
The inventive method also can comprise phase III steam pressure technique: the square pile after second stage steam pressure finishes, need place on request sleeper, and, until solid square pile pile body temperature, be down to after normal temperature meanwhile, can send out stake and to building site, carry out injection.For the square pile of depositing in stockyard, without watering.
When described autoclave is a plurality of, the Yu Shui of arbitrary autoclave and remaining vapour are poured in the contiguous autoclave arranging and carry out secondary utilization.Not only be conducive to the maintenance of square pile pile concrete, more can save a large amount of steam resources.
Be below various embodiments of the present invention, wherein concrete steps process is omitted, and the technological parameter of its each step is as follows:
Embodiment 1
Embodiment 2
Embodiment 3
The beneficial effect contrast of each embodiment
Tool of the present invention has the following advantages: the present invention is on the steam-cured basis of existing normal temperature, carry out the temperature and time adjustment of normal temperature steam curing conservation, and when proceeding to autoclave and carrying out autoclave curing, the pressure of steam, temperature, time etc. are adjusted accordingly, make the saving to a great extent that obtains total time of maintenance, thereby improved the turnover rate of mould, saved the input of human resources, due to production efficiency and the shortening of a stake time, significantly reduced producing and stack the demand in place; And owing to having adopted normal temperature steam curing and autoclave curing, further improved concrete intensity.
Although more than described the specific embodiment of the present invention; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than for the restriction to scope of the present invention; those of ordinary skill in the art are in equivalent modification and the variation done according to spirit of the present invention, all should be encompassed in the scope that claim of the present invention protects.
Claims (5)
1. a maintenance process for solid square pile, is characterized in that: comprise
First stage steam curing process:
After the vibrations of solid square pile cloth, square pile is hung in to steam-cured pond and carry out preliminary maintenance, preliminary maintenance comprises intensification, constant temperature and cooling three phases; Wherein, the time of temperature rise period is 1.5～2.0 hours, and programming rate is 15～20 ℃/h, and the programming rate of temperature rise period is front slow rear fast; The time in constant temperature stage is 3.0～3.5 hours, and it is 80～85 ℃ that temperature is controlled; The time of temperature-fall period is 0.5～1.0 hour;
Second stage steam pressure technique:
First stage steam curing is finished and the square pile of the demoulding proceeds to autoclave and carries out secondary maintenance, comprise boost, constant voltage, step-down and cooling four-stage; Wherein, the time of boost phase is 1.0～2.0 hours, and the rate of rise is 0.05～0.10MPa/ hour, and the rate of rise is front slow rear fast; The time of constant-voltage phase is 2.5～3.5 hours, and it is 0.15～0.20MPa that pressure is controlled, and temperature control is 100～110 ℃; The time of buck stage is 1.0～2.0 hours, and pressure decay rate is 0.05～0.10MPa/ hour, and pressure decay rate is front slow rear fast; The time of temperature-fall period is 1.0 hours.
2. the maintenance process of solid square pile according to claim 1, it is characterized in that: in described second stage steam curing process, it is to adopt entrucking to enter the mode of still that square pile is proceeded to autoclave, and the sleeper on still car or parallels need keep straight line with the suspension ring position of square pile.
3. the maintenance process of solid square pile according to claim 1 and 2, is characterized in that: described autoclave domestic demand enters a certain amount of water, and the height of water level is between 20～35cm.
4. the maintenance process of solid square pile according to claim 1, is characterized in that: also comprise
Phase III proceeds to stockyard and stacks: the square pile after second stage steam pressure finishes, proceed to stockyard and deposit in, and between storage period square pile without watering.
5. the maintenance process of solid square pile according to claim 1, is characterized in that: when described autoclave is a plurality of, the Yu Shui of arbitrary autoclave and remaining vapour are poured in the contiguous autoclave arranging and carry out secondary utilization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410004142.5A CN103737708B (en) | 2014-01-02 | 2014-01-02 | The maintenance process of solid square pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410004142.5A CN103737708B (en) | 2014-01-02 | 2014-01-02 | The maintenance process of solid square pile |
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| Publication Number | Publication Date |
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| CN103737708A true CN103737708A (en) | 2014-04-23 |
| CN103737708B CN103737708B (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410004142.5A Active CN103737708B (en) | 2014-01-02 | 2014-01-02 | The maintenance process of solid square pile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111548086A (en) * | 2020-04-15 | 2020-08-18 | 中电建路桥集团有限公司 | Reinforcing material for weak roadbed and preparation method thereof |
| CN112356260A (en) * | 2020-10-31 | 2021-02-12 | 宁乡宁华新材料有限公司 | Production method of high-strength tubular pile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733831A (en) * | 2010-01-27 | 2010-06-16 | 中山建华管桩有限公司墙体材料分公司 | Technical method for producing novel building wall material by steam curing |
| JP4694937B2 (en) * | 2005-10-03 | 2011-06-08 | 学校法人 中央大学 | Curing method in the manufacture of highly durable cement-based molded products |
| CN102180634A (en) * | 2011-02-12 | 2011-09-14 | 嘉兴学院管桩应用技术研究所 | Lime silica sand silicate cement and use technique method thereof in tubular pile production |
-
2014
- 2014-01-02 CN CN201410004142.5A patent/CN103737708B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4694937B2 (en) * | 2005-10-03 | 2011-06-08 | 学校法人 中央大学 | Curing method in the manufacture of highly durable cement-based molded products |
| CN101733831A (en) * | 2010-01-27 | 2010-06-16 | 中山建华管桩有限公司墙体材料分公司 | Technical method for producing novel building wall material by steam curing |
| CN102180634A (en) * | 2011-02-12 | 2011-09-14 | 嘉兴学院管桩应用技术研究所 | Lime silica sand silicate cement and use technique method thereof in tubular pile production |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111548086A (en) * | 2020-04-15 | 2020-08-18 | 中电建路桥集团有限公司 | Reinforcing material for weak roadbed and preparation method thereof |
| CN112356260A (en) * | 2020-10-31 | 2021-02-12 | 宁乡宁华新材料有限公司 | Production method of high-strength tubular pile |
Also Published As
| Publication number | Publication date |
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| CN103737708B (en) | 2015-12-09 |
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Address after: Pu Industrial Zone of Quangang District of Quanzhou City, Fujian province 362800 Patentee after: Quanzhou Jianhua Building Material Co., Ltd. Address before: Pu Industrial Zone of Quangang District of Quanzhou City, Fujian province 362800 Patentee before: QUANZHOU JIANHUA CONCRETE PILE COMPANY LIMITED |