CN106337566A - High-strength repairing method for hole of cement prefabricated component - Google Patents
High-strength repairing method for hole of cement prefabricated component Download PDFInfo
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- CN106337566A CN106337566A CN201610732104.0A CN201610732104A CN106337566A CN 106337566 A CN106337566 A CN 106337566A CN 201610732104 A CN201610732104 A CN 201610732104A CN 106337566 A CN106337566 A CN 106337566A
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- hole
- concrete
- repairing
- cement
- prefabricated component
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
- E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a high-strength repairing method for a hole of a cement prefabricated component. The high-strength repairing method comprises the following steps: clearly chiseling away uncompacted concrete and prominent aggregate particles at a hole position, then milling the hole to a fresh concrete surface by using a steel brush, and removing impurities and oil stains by washing a milling surface with an oxalic acid solution; fully filling a chiseled hole with wet cotton yarn materials for moisturizing before repairing; during repairing, painting cement mortar around the hole, and then filling the chiseled hole by using fine aggregate concrete or shrinkage-compensating concrete, wherein the fine aggregate concrete or shrinkage-compensating concrete for repairing is added with aluminum powder which is used as an expanding agent, and is hierarchically tamped during a filling process; after completely filling the hole, trowelling and smoothing the surface of fresh concrete, covering a plastic thin film for maintenance, and erecting and compacting for 5 to 6 days by using a supporting template. The high-strength repairing method disclosed by the invention is simple in technology and low in cost, high-strength repairing of the hole can be completed, the strength at the position of the hole of the cement prefabricated component can be effectively increased, and the service life of the cement prefabricated component is prolonged.
Description
Technical field
The present invention relates to technical field of building construction, especially, it is related to a kind of cement prefabricated component hole high intensity and repairs
Method.
Background technology
Xoncrete structure is the principal mode of China's architectural engineering, and cement prefabricated component is then one of composition portion
Point.Most of at present middle-size and small-size components are all made using prefabrication system, because so can not only raise labour efficiency, and
And can also reduces cost.But some open defects often in making and maintenance in cement prefabricated component, how it is entered
Row preventing and treating, is to ensure that the qualified prefabricated components key factor of production.In space, local or part do not have cement prefabricated component structure memory
Concrete is had to form hole.The general origin cause of formation is: inner and outer template is apart from narrow, difficulty of vibrating.Aggregate size is excessive, web reinforcement mistake
Close, cause to be blocked by reinforcing bar and withdrawing pipe or bellows in concrete discharging, cause its underpart concrete to form hole；Concrete
Poor fluidity, or concrete appearance isolation, coarse aggregate is concentrated, and causes concreting not smooth；Do not vibrate and make by pouring order
Become leakage is shaken point, non-placement layer by layer or layering blocked up, make bottom concrete vibrating operating radius not enough, form loose portions；Cement
The debris such as ice cube, clod are contained in caking or aggregate.Hole can affect structural strength and the service life of cement prefabricated component.Cause
This, the repairing of cement prefabricated component hole is particularly important.
Content of the invention
Present invention aim at providing a kind of cement prefabricated component hole high intensity method for repairing and mending, to solve concrete prefabricated structure
The problem of part hole.
For achieving the above object, the present invention provides a kind of cement prefabricated component hole high intensity method for repairing and mending, including following
Step:
Hole position leakiness concrete and prominent particles of aggregates are cut totally, is then milled to fresh concrete with wire brush
Face, and remove the removal of impurity and greasy dirt using dilute oxalic acid solution cleaning brush flour milling of concentration 5%；Chisel is filled up with wet cotton yarn material before repairing
The hole opened, moisturizing 4-5 days；
During repairing, around hole, first it is coated with cement paste, then with one-level higher than former concrete strength, cement type and former coagulation
Soil is consistent, and the ratio of mud is not more than 0.5 pea gravel concreten or expansive concrete fills up the hole chiseled, the microlith repaired
Aluminium powder is added as swelling agent, layering tamping in filling in concrete or expansive concrete；
After hole is filled up completely with, by floating for novel concrete surface troweling plastic covering membrane curing, and hold out against pressure with support shuttering
Real 5-6 days.
Further, the consumption of described aluminium powder is 0.02% of cement consumption in pea gravel concreten or expansive concrete.
The method have the advantages that
This method for repairing and mending, process is simple, low cost, the high intensity that can complete hole is repaired, and effectively improves cement prefabricated component
Intensity at hole, extends the service life of cement prefabricated component.
Specific embodiment
Hereinafter embodiments of the invention are described in detail.
The preferred embodiments of the present invention provide a kind of cement prefabricated component hole high intensity method for repairing and mending, walk including following
Rapid: hole position leakiness concrete and prominent particles of aggregates are cut totally, is then milled to fresh concrete face with wire brush,
And remove the removal of impurity and greasy dirt using dilute oxalic acid solution cleaning brush flour milling of concentration 5%；Filled up with wet cotton yarn material before repairing and to chisel
Hole, moisturizing 4-5 days；
During repairing, around hole, first it is coated with cement paste, then with one-level higher than former concrete strength, cement type and former coagulation
Soil is consistent, and the ratio of mud is not more than 0.5 pea gravel concreten or expansive concrete fills up the hole chiseled, the microlith repaired
Aluminium powder is added as swelling agent, layering tamping in filling in concrete or expansive concrete；
After hole is filled up completely with, by floating for novel concrete surface troweling plastic covering membrane curing, and hold out against pressure with support shuttering
Real 5-6 days.
This method for repairing and mending, process is simple, low cost, the high intensity that can complete hole is repaired, and effectively improves concrete prefabricated
Intensity at component hole, extends the service life of cement prefabricated component.
Preferably, the consumption of described aluminium powder is 0.02% of cement consumption in pea gravel concreten or expansive concrete.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention；Skill for this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (2)
1. a kind of cement prefabricated component hole high intensity method for repairing and mending is it is characterised in that comprise the following steps:
Hole position leakiness concrete and prominent particles of aggregates are cut totally, is then milled to fresh concrete with wire brush
Face, and remove the removal of impurity and greasy dirt using dilute oxalic acid solution cleaning brush flour milling of concentration 5%；Chisel is filled up with wet cotton yarn material before repairing
The hole opened, moisturizing 4-5 days；
During repairing, around hole, first it is coated with cement paste, then with one-level higher than former concrete strength, cement type and former coagulation
Soil is consistent, and the ratio of mud is not more than 0.5 pea gravel concreten or expansive concrete fills up the hole chiseled, the microlith repaired
Aluminium powder is added as swelling agent, layering tamping in filling in concrete or expansive concrete；
After hole is filled up completely with, by floating for novel concrete surface troweling plastic covering membrane curing, and hold out against pressure with support shuttering
Real 5-6 days.
2. cement prefabricated component hole high intensity method for repairing and mending according to claim 1 it is characterised in that:
The consumption of described aluminium powder is 0.02% of cement consumption in pea gravel concreten or expansive concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610732104.0A CN106337566A (en) | 2016-08-26 | 2016-08-26 | High-strength repairing method for hole of cement prefabricated component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610732104.0A CN106337566A (en) | 2016-08-26 | 2016-08-26 | High-strength repairing method for hole of cement prefabricated component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106337566A true CN106337566A (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610732104.0A Pending CN106337566A (en) | 2016-08-26 | 2016-08-26 | High-strength repairing method for hole of cement prefabricated component |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269020A (en) * | 2017-07-18 | 2017-10-20 | 华若延 | A kind of method for repairing and mending of ancient city wall brick |
| CN108221949A (en) * | 2018-02-02 | 2018-06-29 | 上海港湾基础建设（集团）股份有限公司 | Double glue mend film device and method to a kind of vacuum preloading under water |
| CN109400085A (en) * | 2018-12-17 | 2019-03-01 | 安徽中宝建材科技有限公司 | Assembled architecture prefabricated components surface repairing method |
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| JP2002154863A (en) * | 2000-11-15 | 2002-05-28 | Wakuishi Kiyotaka | High-strength, crystal growth type mortar and method for protection/repair of concrete structure |
| CN202450559U (en) * | 2012-02-29 | 2012-09-26 | 叶香雄 | Waterproof structure of basement |
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| JP2002154863A (en) * | 2000-11-15 | 2002-05-28 | Wakuishi Kiyotaka | High-strength, crystal growth type mortar and method for protection/repair of concrete structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269020A (en) * | 2017-07-18 | 2017-10-20 | 华若延 | A kind of method for repairing and mending of ancient city wall brick |
| CN108221949A (en) * | 2018-02-02 | 2018-06-29 | 上海港湾基础建设（集团）股份有限公司 | Double glue mend film device and method to a kind of vacuum preloading under water |
| CN108221949B (en) * | 2018-02-02 | 2023-12-19 | 上海港湾基础建设（集团）股份有限公司 | Vacuum pre-pressing underwater double-adhesive film supplementing device and method |
| CN109400085A (en) * | 2018-12-17 | 2019-03-01 | 安徽中宝建材科技有限公司 | Assembled architecture prefabricated components surface repairing method |
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Application publication date: 20170118 |