CN101791823B - Fast curing method of concrete members - Google Patents
Fast curing method of concrete members Download PDFInfo
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- CN101791823B CN101791823B CN2010101317627A CN201010131762A CN101791823B CN 101791823 B CN101791823 B CN 101791823B CN 2010101317627 A CN2010101317627 A CN 2010101317627A CN 201010131762 A CN201010131762 A CN 201010131762A CN 101791823 B CN101791823 B CN 101791823B
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Abstract
A fast curing method of concrete members is characterized in that the concrete samples or members which are not set and hardened are placed into a pressure vessel, high temperature water vapor is filled, nitrogen and oxygen are removed, then a microwave generator is utilized to uniformly heat the concrete samples or members so that high temperature and high pressure saturated vapor is formed in the pressure vessel, during heating, the temperature of the samples or members is controlled to be less than the temperature of the saturated vapor in the pressure vessel and the temperature different is within 5 DEG C, so as to prevent loss of moisture in the concrete samples, the concrete samples or members are heated to the target temperature of 150-175 DEG C, curing is carried out for 1-2h, a microwave heater is closed, the temperature is reduced by spraying until the internal pressure and the external pressure of the vessel are balanced and the samples are taken out, thus completing curing. The microwave compound autoclave curing technology is applied to promoting fast acceleration of the concrete, the inside and the outside of the samples are synchronously heated, temperature self-restrained stress does not exist and the samples have good curing effects. Curing can be completed within 2-3h and reach the effect of 48h of autoclave curing and the effect of 28 days of natural curing.
Description
Technical field
The present invention relates to the technology of civil engineering field fast lifting concrete strength, be mainly used in the lifting of concrete product, aerated concrete products early strength and to the rapid curing method of the monitoring, particularly a kind of concrete component of poured in place concrete intensity quality.
Background technology
Materials for walls such as the precast concrete goods are meant and are applied in the civil engineering, adopt the member such as all kinds of beams, plate, post, stake of concreting and brick in precast plant, building block, wallboard, because of all transfer efficients of equipment and construction period, need urge to coagulate to concrete mostly, to improve its early strength, the tradition steaming pressuring curing process is inhomogeneous because of heating up, and easily causes bigger temperature stress, must heat up stage by stage mostly, thereby programming rate is slow, and work efficiency is lower.
Poured in place concrete is widely used in the civil engineering field, monitoring to the poured in place concrete quality generally is to reserve concrete test block with project progress, after the standard curing 28 days, know the in situ concrete strength quality by pressure testing, there is tangible hysteresis effect in this method, in case discovery quality problems, because of actual project progress significantly leading (present rate of progress of the construction be generally 7 days 1 layer, 4 layers are finished after 28 days), handle very thorny to this type of engineering accident, the reinforcing difficulty is big, expense is high, and the investor is difficult to accept.
In addition, all kinds of cement, concrete experiments chamber (often need a large amount of examinations to join) when carrying out the multi-parameter experiment or carrying out the concrete proportioning design, adopt conventional maintenance, and the cycle is long, consuming time many.
Summary of the invention
The technical problem to be solved in the present invention is at the deficiencies in the prior art, has proposed a kind ofly can fast, efficiently promote early age strength of concrete, shortens the concrete component rapid curing method of curing time.
The technical problem to be solved in the present invention is achieved through the following technical solutions, a kind of rapid curing method of concrete component, be characterized in: with the concrete test block of setting and harden or member do not place pressure vessel as yet, in pressure vessel, charge into high-temperature water vapor, exhaust 1 minute, nitrogen in the discharge pressure container and oxygen, utilize microwave applicator that concrete test block or member are evenly heated then, continue in pressure vessel, to charge into high-temperature water vapor simultaneously, make and form the HTHP saturated vapor in the pressure vessel, in the heating process, the temperature of control test block or member is less than the temperature of saturated vapor in the pressure vessel, and the temperature difference is in 5 ℃, to prevent the moisture loss in concrete test block or the member, reach target temperature until test block or member temperature, target temperature is 150-175 ℃, this temperature-rise period is 15-30 minute, under target temperature maintenance 1-2 hour, close microwave applicator, by spraying cooling to the container internal and external pressure balance, open pressure vessel, take out test block or member, finish maintenance.
The present invention compared with prior art, the short concrete that coagulates of the compound steam press maintenance technology of applied microwave is with fixed attention short fast, save time: can maintenance finish in 2-3 hour, reach 48 hours effect of steam press maintenance, reach 28 days effect of natural curing, be used for improving concrete product, the conventional steam curing process of aerated concrete products production process, more traditional steam press maintenance technical efficiency significantly promotes; Be used for now mixing or the cast-in-place concrete performance is measured fast, can determine its intensity quality before the setting and harden at the engineering site concrete, more conventional way can be significantly in advance to the observing and controlling of on-site concrete quality; Be used for the laboratory all kinds of concrete strengths are tested fast,, improve the efficient that the concrete strength examination is joined in order to shorten experimental period.The inside and outside heating synchronously of concrete test block or member: do not have temperature from stress, test block or component conservation are effective.Save energy consumption: the time is short, and the curing means heat radiation is few.
The specific embodiment
A kind of rapid curing method of concrete component, with the concrete test block of setting and harden or member do not place pressure vessel as yet, in pressure vessel, charge into high-temperature water vapor, exhaust 1 minute, nitrogen in the discharge pressure container and oxygen, utilize microwave applicator that concrete test block or member are evenly heated then, continue in pressure vessel, to charge into water vapour simultaneously, make and form the HTHP saturated vapor in the pressure vessel, in the heating process, the temperature of control test block or member is less than the temperature of saturated vapor in the pressure vessel, and the temperature difference is in 5 ℃, prevent the moisture loss in concrete test block or the member, reach target temperature until the temperature of test block or member, target temperature is 150-175 ℃, this temperature-rise period is 15-30 minute, under target temperature maintenance 1-2 hour, concrete product quick-hardening under hot conditions reached the maintenance target.Close microwave applicator, to the container internal and external pressure balance, open pressure vessel, take out test block or member, finish maintenance by spraying cooling.
Method of the present invention can be used for improving steam curing process conventional in concrete product, the aerated concrete products production process, and more traditional steam press maintenance technical efficiency significantly promotes; Also can be used for now mixing or the cast-in-place concrete performance is measured fast, can determine its intensity quality before the setting and harden at the engineering site concrete, more conventional way can be significantly in advance to the observing and controlling of on-site concrete quality; Also can be used for the laboratory all kinds of concrete strengths are tested fast,, improve the efficient that the concrete strength examination is joined in order to shorten experimental period.
Claims (1)
1. the rapid curing method of a concrete component, it is characterized in that: with the concrete test block of setting and harden or member do not place pressure vessel as yet, in pressure vessel, charge into high-temperature water vapor, nitrogen in the discharge pressure container and oxygen, utilize microwave applicator that concrete test block or member are evenly heated then, continue in pressure vessel, to charge into water vapour simultaneously, make and form the HTHP saturated vapor in the pressure vessel, in the heating process, the temperature of control test block or member is less than saturated-steam temperature in the pressure vessel, and the temperature difference prevents the moisture loss in concrete test block or the member in 5 ℃, reach target temperature until test block or member temperature, target temperature is 150-175 ℃, this temperature-rise period is 15-30 minute, under target temperature maintenance 1-2 hour, closes microwave applicator, by spraying cooling to the container internal and external pressure balance, open pressure vessel, take out test block or member, finish maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101317627A CN101791823B (en) | 2010-03-25 | 2010-03-25 | Fast curing method of concrete members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101317627A CN101791823B (en) | 2010-03-25 | 2010-03-25 | Fast curing method of concrete members |
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| Publication Number | Publication Date |
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| CN101791823A CN101791823A (en) | 2010-08-04 |
| CN101791823B true CN101791823B (en) | 2011-08-24 |
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| CN2010101317627A Active CN101791823B (en) | 2010-03-25 | 2010-03-25 | Fast curing method of concrete members |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266772B (en) * | 2013-05-20 | 2015-07-22 | 山东恒建工程监理咨询有限公司 | Curing method used for highway engineering construction concrete in winter |
| CN104044204A (en) * | 2014-05-30 | 2014-09-17 | 湖南大学 | Rapid pre-curing method for carbon dioxide curing cement-based materials |
| CN104290183A (en) * | 2014-09-26 | 2015-01-21 | 湖南大学 | Method for maintaining porous concrete through carbon dioxide |
| CN104290182A (en) * | 2014-09-26 | 2015-01-21 | 湖南大学 | CO2 maintenance device for porous concrete blocks |
| CN104563315A (en) * | 2015-01-08 | 2015-04-29 | 南京倍立达新材料系统工程股份有限公司 | Three-dimensional knitted hollow fabric reinforced foaming cement heat preserving plate and preparation method thereof |
| CN108793871B (en) * | 2018-06-19 | 2020-12-22 | 佛山市三乐建材实业有限公司 | Calcium silicate board containing nano barium phosphate modified sericite powder and preparation method thereof |
| CN111099920B (en) * | 2019-12-27 | 2022-05-17 | 广西科学院 | Microwave curing method for assembled building materials |
| CN112324140A (en) * | 2020-11-09 | 2021-02-05 | 深圳市罗湖建筑安装工程有限公司 | Prestressed concrete slab construction method |
| CN113880493B (en) * | 2021-10-14 | 2023-03-21 | 南京航空航天大学 | Concrete early strength agent, early strength concrete and preparation method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2661752Y (en) * | 2003-11-06 | 2004-12-08 | 广东美的集团股份有限公司 | Microwave bituminous pavement curing rig |
| CN2777030Y (en) * | 2004-11-12 | 2006-05-03 | 佛山市美的日用家电集团有限公司 | Comprehensive pavement maintaining vehicle with micro-wave heating device |
| KR20060096972A (en) * | 2006-08-23 | 2006-09-13 | 김용균 | Manufacturing process of high strength concrete used gypsum wastes |
| CN201158094Y (en) * | 2008-02-04 | 2008-12-03 | 淮海工学院 | Steam-pressure maintaining device |
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Address after: No. 59, Cangwu Road, hi tech Zone, Lianyungang City, Jiangsu Province Patentee after: Jiangsu Ocean University Address before: 222006 Lianyungang Province, Cangwu Road, Sinpo District, Jiangsu 59, School of civil engineering, Huaihai Institute of Techology Patentee before: HUAIHAI INSTITUTE OF TECHNOLOGY |
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Effective date of registration: 20201127 Address after: 226400 Yangkou Port Economic Development Zone, Nantong City, Jiangsu Province (Changsha Town, Rudong County) Patentee after: Jiangsu Yangkou Port Construction and Development Group Co.,Ltd. Address before: 399 Changjiang Road, Chengzhong street, Rudong County, Nantong City, Jiangsu Province Patentee before: Nantong Yun run science and Technology Information Consulting Co.,Ltd. Effective date of registration: 20201127 Address after: 399 Changjiang Road, Chengzhong street, Rudong County, Nantong City, Jiangsu Province Patentee after: Nantong Yun run science and Technology Information Consulting Co.,Ltd. Address before: No. 59, Cangwu Road, hi tech Zone, Lianyungang City, Jiangsu Province Patentee before: Jiangsu Ocean University |