CN102642243A - Normal-pressure hot water curing process of concrete pile - Google Patents
Normal-pressure hot water curing process of concrete pile Download PDFInfo
- Publication number
- CN102642243A CN102642243A CN2012100470775A CN201210047077A CN102642243A CN 102642243 A CN102642243 A CN 102642243A CN 2012100470775 A CN2012100470775 A CN 2012100470775A CN 201210047077 A CN201210047077 A CN 201210047077A CN 102642243 A CN102642243 A CN 102642243A
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- Prior art keywords
- concrete
- pile
- temperature
- hot water
- maintenance
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000004567 concrete Substances 0.000 title claims abstract description 16
- 239000004568 cement Substances 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000012423 maintenance Methods 0.000 claims description 34
- 238000000465 moulding Methods 0.000 claims description 9
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 5
- 239000000920 calcium hydroxide Substances 0.000 claims description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a normal-pressure hot water curing process of a concrete pile. The process comprises the following steps of: 1), after the concrete pile is molded, carrying out low-temperature steam curing on the concrete pile for 1-9 hours in a condition that a temperature is 35-45 DEG C, after cement in the concrete pile is adequately hydrated, forming a spatial reticular structure, and after certain strength is finally set for concrete, entering a next curing stage; and 2), carrying out hot water curing for 6-14 hours in a condition that the temperature is 70-80 DEG C, and then, naturally cooling. By using the normal-pressure hot water curing process, the normal-pressure curing is carried out on the concrete pile through the way of combining the hot water curing with the low-temperature steam curing, so that a product has higher initial strength, and the problems of the low utilization rate of heat and the durability brought about by high-pressure curing are solved.
Description
Technical field
The present invention relates to a kind of maintaining process, particularly a kind of concrete-pile atmospheric hot-water maintaining process.
Background technology
High temperature steam curing is adopted in the maintenance of stake at present more, and the also employing autoclave curing that has is bad if maintenance pond and autoclave seal; Steam is prone to reveal, and the back steam ascension heat of uncapping just scatters and disappears difficult second use; Be prone to like this cause energy utilization rate low, because high-pressure curing is arranged, the probability of concrete durability variation increases; And autoclave easily blast hurt sb.'s feelings, the cancellation high-pressure curing becomes the focus that low-carbon (LC) is studied with high temperature steam curing, the substitute is the atmospheric hot-water maintaining process.Can strengthen concrete durability like this, prevent that autoclave from hurting sb.'s feelings, effectively utilize the energy.It is considered herein that, through the refinement maintaining process, after the concrete final set; Adopt the hot water maintenance, not only be beneficial to the growth of intensity, but also help the exchange of ion; Temperature is easy to control, and concrete internal structure is balanced, is difficult for producing the strength retraction phenomenon; Improve production efficiency, guaranteed the quality of product.
Summary of the invention
The technical problem that the present invention will solve provides a kind of precast concrete pile that can make and has higher intensity, the concrete-pile atmospheric hot-water maintaining process that heat utilization ratio is high.
For achieving the above object, technical scheme of the present invention is following:
A kind of concrete-pile atmospheric hot-water maintaining process, this technology comprises the steps:
1) after the concrete-pile moulding; In temperature is the low-temperature steam maintenance operating that under the 35-45 ℃ of condition concrete-pile was carried out 1-9 hour, treats the abundant aquation of cement in the concrete-pile, forms the space network structure; After treating that concrete final set has certain intensity, get into next maintenance stage again;
2) be under the 70-80 ℃ of condition in temperature, carry out 6-14 hour hot water maintenance, then cooling naturally.
Preferably, the initial temperature of said hot water and steam curing temperature differ and are no more than 15 ℃, and hot water is warmed up to the temperature heating-up time that sets and was controlled at 0.5-5 hour.
Preferably, in hot water, add calcium hydroxide or calcium oxide, its concentration is controlled at 0% to supersaturation.
Preferably, after the concrete-pile moulding, under 30 ℃, concrete-pile carried out 4 hours low-temperature steam maintenance operating, put into hot water maintenance pond, water temperature heats up by 30 ℃ and carries out 8 hours hot water maintenance after 2 hours to 60 ℃, lowers the temperature naturally again.
Preferably, after the concrete-pile moulding, under 45 ℃, concrete-pile carried out 2 hours low-temperature steam maintenance operating, put into hot water maintenance pond, water temperature heats up by 45 ℃ and carries out 4 hours hot water maintenance after 2 hours to 85 ℃, lowers the temperature naturally again.
Through technique scheme, the invention has the beneficial effects as follows:
If the concrete-pile degree of hydration is not high behind the present invention's low-temperature steam maintenance operating, in containing the hot water of calcium hydroxide, also can carry out ion-exchange, portion C a2+ is utilized, and part Na+ is cemented out, to reduce the harm of soluble-salt to stake.
The present invention carries out ordinary pressure curing through the mode that above-mentioned low-heat water curing combines to concrete-pile, strengthens concrete durability, thereby effectively utilizes the energy to make product have higher initial strength, has improved product quality, production efficiency and durability.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
A kind of concrete-pile atmospheric hot-water of the present invention maintaining process, this technology comprises the steps:
1) after the concrete-pile moulding; In temperature is the low-temperature steam maintenance operating that under the 35-45 ℃ of condition concrete-pile was carried out 1-9 hour, treats the abundant aquation of cement in the concrete-pile, forms the space network structure; After treating that concrete final set has certain intensity, get into next maintenance stage again;
2) be under the 70-80 ℃ of condition in temperature, carry out 6-14 hour hot water maintenance, then cooling naturally.
The initial temperature of hot water of the present invention and steam curing temperature differ and are no more than 15 ℃, and hot water is warmed up to the temperature heating-up time that sets and was controlled at 0.5-5 hour.
The present invention adds calcium hydroxide or calcium oxide in hot water; Its concentration is controlled at 0% to supersaturation, if the concrete-pile degree of hydration is not high behind the low-temperature steam maintenance operating, in containing the hot water of calcium hydroxide; Also can carry out ion-exchange; Portion C a2+ is utilized, and part Na+ is cemented out, to reduce the harm of soluble-salt to stake.
Embodiment 1
After the concrete-pile moulding, under 30 ℃, concrete-pile carried out 4 hours low-temperature steam maintenance operating, put into hot water maintenance pond, water temperature heats up by 30 ℃ and carries out 8 hours hot water maintenance after 2 hours to 60 ℃, lowers the temperature naturally again.
Embodiment 2
After the concrete-pile moulding, under 45 ℃, concrete-pile carried out 2 hours low-temperature steam maintenance operating, put into hot water maintenance pond, water temperature heats up by 45 ℃ and carries out 4 hours hot water maintenance after 2 hours to 85 ℃, lowers the temperature naturally again.
Mode through above-mentioned hot water maintenance and low-temperature steam maintenance operating combine is carried out ordinary pressure curing to concrete-pile, thereby makes product have higher initial strength, and it is not high to have solved heat utilization ratio, the problem of the durability that high-pressure curing brought.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (5)
1. a concrete-pile atmospheric hot-water maintaining process is characterized in that this technology comprises the steps:
1) after the concrete-pile moulding; In temperature is the low-temperature steam maintenance operating that under the 35-45 ℃ of condition concrete-pile was carried out 1-9 hour, treats the abundant aquation of cement in the concrete-pile, forms the space network structure; After treating that concrete final set has certain intensity, get into next maintenance stage again;
2) be under the 70-80 ℃ of condition in temperature, carry out 6-14 hour hot water maintenance, then cooling naturally.
2. a kind of concrete-pile atmospheric hot-water maintaining process according to claim 1 is characterized in that the initial temperature of said hot water and steam curing temperature differ and be no more than 15 ℃, and hot water is warmed up to the temperature heating-up time that sets and was controlled at 0.5-5 hour.
3. a kind of concrete-pile atmospheric hot-water maintaining process according to claim 1 is characterized in that, in hot water, adds calcium hydroxide or calcium oxide, and its concentration is controlled at 0% to supersaturation.
4. a kind of concrete-pile atmospheric hot-water maintaining process according to claim 1; It is characterized in that: after the concrete-pile moulding; Under 30 ℃, concrete-pile carried out 4 hours low-temperature steam maintenance operating; Put into hot water maintenance pond, water temperature heats up by 30 ℃ and carries out 8 hours hot water maintenance after 2 hours to 60 ℃, lowers the temperature naturally again.
5. a kind of concrete-pile atmospheric hot-water maintaining process according to claim 1; It is characterized in that: after the concrete-pile moulding; Under 45 ℃, concrete-pile carried out 2 hours low-temperature steam maintenance operating; Put into hot water maintenance pond, water temperature heats up by 45 ℃ and carries out 4 hours hot water maintenance after 2 hours to 85 ℃, lowers the temperature naturally again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100470775A CN102642243A (en) | 2012-02-28 | 2012-02-28 | Normal-pressure hot water curing process of concrete pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100470775A CN102642243A (en) | 2012-02-28 | 2012-02-28 | Normal-pressure hot water curing process of concrete pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102642243A true CN102642243A (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100470775A Pending CN102642243A (en) | 2012-02-28 | 2012-02-28 | Normal-pressure hot water curing process of concrete pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112497455A (en) * | 2020-11-17 | 2021-03-16 | 广州三川控制系统工程设备有限公司 | Concrete pipe pile maintenance system and maintenance method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4531304A (en) * | 1980-05-14 | 1985-07-30 | Besser Company | Production of concrete articles utilizing heat-reclaiming system |
| WO1999062843A1 (en) * | 1998-06-04 | 1999-12-09 | Denki Kagaku Kogyo Kabushiki Kaisha | Method for producing chemically prestressed concrete product, high-temperature, high-pressure underwater concrete product curing device suitably used for the method and curing method for concrete product using the curing device |
| CN1410238A (en) * | 2002-11-18 | 2003-04-16 | 蒋元海 | Manufacturing method of polypropylene fiber reinforced prefabricated steel concrete square pole |
| CN1597286A (en) * | 2004-09-16 | 2005-03-23 | 颜小荣 | Method of manufacturing prestressed high strength concrete hollow square pile centrifugal, steam, maintenance method |
| CN101508143A (en) * | 2009-03-04 | 2009-08-19 | 广东三和管桩有限公司 | PHC pipe pile energy-saving maintenance method |
| CN102139512A (en) * | 2010-01-28 | 2011-08-03 | 北新集团建材股份有限公司 | Atmospheric steam curing technique for fiber cement external wall panel |
-
2012
- 2012-02-28 CN CN2012100470775A patent/CN102642243A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4531304A (en) * | 1980-05-14 | 1985-07-30 | Besser Company | Production of concrete articles utilizing heat-reclaiming system |
| WO1999062843A1 (en) * | 1998-06-04 | 1999-12-09 | Denki Kagaku Kogyo Kabushiki Kaisha | Method for producing chemically prestressed concrete product, high-temperature, high-pressure underwater concrete product curing device suitably used for the method and curing method for concrete product using the curing device |
| CN1410238A (en) * | 2002-11-18 | 2003-04-16 | 蒋元海 | Manufacturing method of polypropylene fiber reinforced prefabricated steel concrete square pole |
| CN1597286A (en) * | 2004-09-16 | 2005-03-23 | 颜小荣 | Method of manufacturing prestressed high strength concrete hollow square pile centrifugal, steam, maintenance method |
| CN101508143A (en) * | 2009-03-04 | 2009-08-19 | 广东三和管桩有限公司 | PHC pipe pile energy-saving maintenance method |
| CN102139512A (en) * | 2010-01-28 | 2011-08-03 | 北新集团建材股份有限公司 | Atmospheric steam curing technique for fiber cement external wall panel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112497455A (en) * | 2020-11-17 | 2021-03-16 | 广州三川控制系统工程设备有限公司 | Concrete pipe pile maintenance system and maintenance method |
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Application publication date: 20120822 |