CN112681788A - Rapid repairing method for prestressed concrete pole crack - Google Patents
Rapid repairing method for prestressed concrete pole crack Download PDFInfo
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- CN112681788A CN112681788A CN202011413186.5A CN202011413186A CN112681788A CN 112681788 A CN112681788 A CN 112681788A CN 202011413186 A CN202011413186 A CN 202011413186A CN 112681788 A CN112681788 A CN 112681788A
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Abstract
A quick repairing method for prestressed concrete pole cracks is characterized in that the cracks with the width larger than 0.05mm on the surface of a pole are cleaned by sand and ash on the surface of the pole and washed by water; chiseling a groove along a seam, cleaning the groove by using a steel wire brush, coating a layer of MA type cement modifier in the groove, then repairing the embedded groove of the putty by using a concrete electric pole, scraping the groove flat and curing; the concrete pole repairing putty comprises the following components in parts by weight: the cement mortar comprises rapid hardening sulphoaluminate cement, portland cement, an MA type cement modifier, fly ash, 200-mesh quartz sand, a polycarboxy water reducing agent, redispersible latex powder, a defoaming agent and water; after the concrete pole repairing putty is cured, polishing; and (3) integrally coating the concrete chromatic aberration repairing agent on the surface of the concrete pole to finish repairing. The advantages are that: the method has the advantages of good repairing effect on the electric pole with loose exposed sand on the surface and concrete peeling, short curing time, good fluidity of the concrete, more flat surface after the concrete is cured, less surface defects and convenient and rapid construction.
Description
Technical Field
The invention relates to a quick repairing method for a prestressed concrete pole crack.
Background
The concrete pole has the advantages of low cost, convenience in construction, long service life, low maintenance cost and the like, and is widely applied to projects such as outdoor frameworks of overhead power transmission lines and transformer substations, railway contact net pillars, broadcast communication, municipal lighting and the like. The high-strength prestressed concrete pole is a composite reinforced concrete mixed member formed by reasonably matching prestressed wires with common steel bars and cementing and centrifuging high-grade concrete, and has high strength and good bending and cracking resistance.
Although part of concrete electric poles are replaced by steel structure iron towers with the continuous development of power grid construction, old concrete electric poles cannot be transformed at once, and due to the fact that the electric poles are used in the open air environment for a long time, the electric poles are subjected to the aging phenomena of cracks, holes, surface crunchy and loose sand, concrete peeling and the like in different degrees due to the fact that environmental water such as wind and rain, rainwater, underground water, seawater and the like erodes, corrosive media in the atmosphere erode and carbonization and the like and the effects of various external forces and internal stresses, the pole bodies are prone to have different degrees of aging, the service life of the electric poles can be greatly shortened, and the safe operation of the electric transmission lines is seriously influenced. And (3) coating a layer of coating which can prevent moisture and humidity from entering and has a sealing and protecting effect on the micro cracks with the width less than or equal to 0.05mm by adopting a surface coating closing method. But the repairing of the electric pole with large cracks, loose and exposed sand on the surface and concrete peeling is more complicated, if the conventional cement repairing material is used, the maintenance treatment is needed, the construction period is long, and the phenomena of 'dusting' and 'saltpetering' are easy to occur in the repaired part of the cement.
Disclosure of Invention
The invention aims to solve the technical problem of providing a quick repairing method for prestressed concrete pole cracks, which has good repairing effect on pole with loose exposed sand on the surface and peeled concrete, short curing time, good concrete fluidity, more flat surface after concrete curing, less surface defects and convenient and quick construction.
The technical scheme of the invention is as follows:
a quick repairing method for a prestressed concrete pole crack comprises the following specific steps:
(1) base layer treatment
Cleaning the sand ash on the surface of the electric pole and washing the sand ash with clean water when the width of the electric pole surface is larger than 0.05 mm;
(2) surface crack repair
Chiseling a groove with the width of 1.0cm-1.5cm along the crack, removing a loose layer on the concrete surface near the crack by using a wire brush, coating a layer of MA type cement modifier in the groove, then repairing putty by using a concrete pole, embedding the groove, strickling, and curing for 12 hours-24 hours;
the concrete pole repairing putty comprises the following components in parts by weight:
28-30 parts of quick-hardening sulphoaluminate cement;
20-22 parts of Portland cement;
20-22 parts of MA type cement modifier;
25-28 parts of fly ash;
10-12 parts of 200-mesh quartz sand;
0.5-1.5 parts of a polycarboxylic water reducing agent;
1-1.2 parts of redispersible latex powder;
0.2 part of defoaming agent;
20-25 parts of water;
(3) after the concrete pole repairing putty is cured, polishing a repairing area;
(4) and (3) integrally coating the concrete chromatic aberration repairing agent on the surface of the concrete pole to finish repairing.
Further, the concrete pole repairing putty comprises the following components in parts by weight:
28 parts of quick-hardening sulphoaluminate cement;
22 parts of Portland cement;
20 parts of MA type cement modifier;
28 parts of fly ash;
10 parts of 200-mesh quartz sand;
1.5 parts of a polycarboxy water reducing agent;
1 part of redispersible latex powder;
0.2 part of defoaming agent;
and 25 parts of water.
The invention has the beneficial effects that:
the method comprises the steps of grooving a crack area, pretreating the crack area by using an MA type cement modifier after cleaning, then repairing by using concrete electric pole repairing putty to form a repairing area, polishing the repairing area after the electric epoxy repairing putty is cured, enabling the whole surface to be flat and smooth, and finally coating the surface of the electric pole by using a concrete color difference repairing agent to form an appearance with consistent color. The repairing method can be used for conveniently repairing the cracks of the pole body of the pole in advance, has good repairing effect on the pole with loose exposed sand on the surface and peeled concrete, has short curing time, good concrete fluidity, more smooth surface after the concrete is cured and less surface defects, effectively shortens the construction period, can greatly prolong the service life of the pole, ensures the safe operation of a power transmission line, and has huge social and economic benefits.
Detailed Description
Example 1
A quick repairing method for a prestressed concrete pole crack comprises the following specific steps:
(1) base layer treatment
Cleaning the sand ash on the surface of the electric pole and washing the sand ash with clean water when the width of the electric pole surface is larger than 0.05 mm;
(2) surface crack repair
Chiseling a groove with the width of 1.0cm along the crack, removing a loose layer on the concrete surface near the crack by using a steel wire brush, coating a layer of MA type cement modifier in the groove, then repairing the embedded groove of the putty by using a concrete pole, scraping the embedded groove, and curing for 14 hours;
the concrete pole repairing putty comprises the following components:
28g of quick hardening sulphoaluminate cement;
22g of Portland cement;
20g of MA type cement modifier;
28g of fly ash;
10g of 200-mesh quartz sand;
1.5g of a polycarboxy water reducing agent;
1g of redispersible latex powder;
0.2g of defoaming agent;
25g of water;
(3) after the concrete pole repairing putty is cured, polishing a repairing area;
(4) and (3) integrally coating the concrete chromatic aberration repairing agent on the surface of the concrete pole to finish repairing.
Example 2
A quick repairing method for a prestressed concrete pole crack comprises the following specific steps:
(1) base layer treatment
Cleaning the sand ash on the surface of the electric pole and washing the sand ash with clean water when the width of the electric pole surface is larger than 0.05 mm;
(2) surface crack repair
Chiseling a groove with the width of 1.2cm along the crack, removing a loose layer on the concrete surface near the crack by using a steel wire brush, coating a layer of MA type cement modifier in the groove, then repairing the putty with a concrete pole to embed the groove and strickling, and curing for 12 hours;
the concrete pole repairing putty comprises the following components:
30g of quick hardening sulphoaluminate cement;
20g of Portland cement;
22g of MA type cement modifier;
25g of fly ash;
12g of 200-mesh quartz sand;
0.5g of a polycarboxy water reducing agent;
1.2g of redispersible latex powder;
0.2g of defoaming agent;
20g of water;
(3) after the concrete pole repairing putty is cured, polishing a repairing area;
(4) and (3) integrally coating the concrete chromatic aberration repairing agent on the surface of the concrete pole to finish repairing.
Example 3
A quick repairing method for a prestressed concrete pole crack comprises the following specific steps:
(1) base layer treatment
Cleaning the sand ash on the surface of the electric pole and washing the sand ash with clean water when the width of the electric pole surface is larger than 0.05 mm;
(2) surface crack repair
Chiseling a groove with the width of 1.5cm along the crack, removing a loose layer on the concrete surface near the crack by using a steel wire brush, coating a layer of MA type cement modifier in the groove, repairing the embedded groove by using a concrete pole and embedding putty, scraping the groove flat, and curing for 24 hours;
the quick-hardening sulphoaluminate cement is reasonably used in the concrete pole repairing putty, the curing time of the repairing putty can be shortened, and the use of the fly ash and the 200-mesh quartz sand can ensure that the fluidity of the concrete is good, the surface of the concrete is smoother after the concrete is cured, and the surface defects are few; the composition is as follows:
29g of quick hardening sulphoaluminate cement;
21g of Portland cement;
21g of MA type cement modifier;
26g of fly ash;
11g of 200-mesh quartz sand;
1g of a polycarboxy water reducing agent;
1.1g of redispersible latex powder;
0.2g of defoaming agent;
22g of water;
(3) after the concrete pole repairing putty is cured, polishing a repairing area;
(4) and (3) integrally coating the concrete chromatic aberration repairing agent on the surface of the concrete pole to finish repairing.
The above description is only exemplary of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A quick repairing method for a prestressed concrete pole crack is characterized by comprising the following steps:
the method comprises the following specific steps:
(1) base layer treatment
Cleaning the sand ash on the surface of the electric pole and washing the sand ash with clean water when the width of the electric pole surface is larger than 0.05 mm;
(2) surface crack repair
Chiseling a groove with the width of 1.0cm-1.5cm along the crack, removing a loose layer on the concrete surface near the crack by using a wire brush, coating a layer of MA type cement modifier in the groove, then repairing putty by using a concrete pole, embedding the groove, strickling, and curing for 12 hours-24 hours;
the concrete pole repairing putty comprises the following components in parts by weight:
28-30 parts of quick-hardening sulphoaluminate cement;
20-22 parts of Portland cement;
20-22 parts of MA type cement modifier;
25-28 parts of fly ash;
10-12 parts of 200-mesh quartz sand;
0.5-1.5 parts of a polycarboxylic water reducing agent;
1-1.2 parts of redispersible latex powder;
0.2 part of defoaming agent;
20-25 parts of water;
(3) after the concrete pole repairing putty is cured, polishing a repairing area;
(4) and (3) integrally coating the concrete chromatic aberration repairing agent on the surface of the concrete pole to finish repairing.
2. The method for rapidly repairing a crack of a prestressed concrete pole as recited in claim 1, wherein:
the concrete pole repairing putty comprises the following components in parts by weight:
28 parts of quick-hardening sulphoaluminate cement;
22 parts of Portland cement;
20 parts of MA type cement modifier;
28 parts of fly ash;
10 parts of 200-mesh quartz sand;
1.5 parts of a polycarboxy water reducing agent;
1 part of redispersible latex powder;
0.2 part of defoaming agent;
and 25 parts of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011413186.5A CN112681788A (en) | 2020-12-07 | 2020-12-07 | Rapid repairing method for prestressed concrete pole crack |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011413186.5A CN112681788A (en) | 2020-12-07 | 2020-12-07 | Rapid repairing method for prestressed concrete pole crack |
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| CN112681788A true CN112681788A (en) | 2021-04-20 |
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| CN202011413186.5A Pending CN112681788A (en) | 2020-12-07 | 2020-12-07 | Rapid repairing method for prestressed concrete pole crack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293806A (en) * | 2021-12-29 | 2022-04-08 | 贵州电网有限责任公司 | Electric pole repairing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105218027A (en) * | 2015-11-06 | 2016-01-06 | 嘉华特种水泥股份有限公司 | A kind of Prestressed concrete cylinder pipe crack repairing agent |
| CN106082855A (en) * | 2016-06-16 | 2016-11-09 | 夏学云 | A kind of high intensity high-durability modified concrete structure repair material |
| CN106316325A (en) * | 2016-08-24 | 2017-01-11 | 青岛新华友建工集团股份有限公司 | High-strength repairing material for concrete cracks and construction method of high-strength repairing material |
| CN106351459A (en) * | 2016-08-26 | 2017-01-25 | 北海金匠水泥制品有限责任公司 | High strength repairing method of crack on precast concrete units |
| CN109437756A (en) * | 2018-12-11 | 2019-03-08 | 福建建华建材有限公司 | A kind of prestressed high-strength concrete pile repairing powder and preparation method thereof |
| CN109608154A (en) * | 2018-11-27 | 2019-04-12 | 新沂市大明科技开发有限公司 | A kind of road repair mortar and preparation method thereof |
-
2020
- 2020-12-07 CN CN202011413186.5A patent/CN112681788A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105218027A (en) * | 2015-11-06 | 2016-01-06 | 嘉华特种水泥股份有限公司 | A kind of Prestressed concrete cylinder pipe crack repairing agent |
| CN106082855A (en) * | 2016-06-16 | 2016-11-09 | 夏学云 | A kind of high intensity high-durability modified concrete structure repair material |
| CN106316325A (en) * | 2016-08-24 | 2017-01-11 | 青岛新华友建工集团股份有限公司 | High-strength repairing material for concrete cracks and construction method of high-strength repairing material |
| CN106351459A (en) * | 2016-08-26 | 2017-01-25 | 北海金匠水泥制品有限责任公司 | High strength repairing method of crack on precast concrete units |
| CN109608154A (en) * | 2018-11-27 | 2019-04-12 | 新沂市大明科技开发有限公司 | A kind of road repair mortar and preparation method thereof |
| CN109437756A (en) * | 2018-12-11 | 2019-03-08 | 福建建华建材有限公司 | A kind of prestressed high-strength concrete pile repairing powder and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293806A (en) * | 2021-12-29 | 2022-04-08 | 贵州电网有限责任公司 | Electric pole repairing method |
| CN114293806B (en) * | 2021-12-29 | 2023-11-14 | 贵州电网有限责任公司 | Electric pole repairing method |
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Application publication date: 20210420 |
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