CN105218027A - A kind of Prestressed concrete cylinder pipe crack repairing agent - Google Patents
A kind of Prestressed concrete cylinder pipe crack repairing agent Download PDFInfo
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- CN105218027A CN105218027A CN201510750412.1A CN201510750412A CN105218027A CN 105218027 A CN105218027 A CN 105218027A CN 201510750412 A CN201510750412 A CN 201510750412A CN 105218027 A CN105218027 A CN 105218027A
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- prestressed concrete
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- cylinder pipe
- crack repairing
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Abstract
The invention discloses the agent of a kind of Prestressed concrete cylinder pipe crack repairing, belong to building material technical field.The agent of described Prestressed concrete cylinder pipe crack repairing comprises following raw material by weight: silicate cement 25 ~ 60 parts; Active filler 5 ~ 10 parts; Water reducer 0.1 ~ 0.2 part; Tinting dye 35 ~ 65 parts.Healant of the present invention has strength consistency and outward appearance consistence is good, and cost is low, environment amenable advantage.
Description
Technical field
The present invention relates to a kind of crack repairing agent, particularly relate to the agent of a kind of Prestressed concrete cylinder pipe crack repairing.
Background technology
At present; PCCP(pre-stress steel cylinder) concrete pipe is due to liner steel cylinder automatic soldering technique reason; form the welding gap of spiral on steel cylinder surface; produce the induced cracking structure to the concrete cover of steel cylinder; cause concrete after vapor cure, occur the crack that 0.1 ~ 0.5mm does not wait; cause the problems such as concrete quality difference and bad order, to PCCP pipe, manufacturing enterprise causes very large puzzlement.
The patching material of the solution of current employing mainly inorganic patching material or high score subclass.Inorganic materials is mainly based on grout, although ensure that the requirement of the fusion between inorganic materials and the water pipe water nonpollution to particular requirement, intensity is often very low, or is exactly that the rear appearance effect of repairing is very poor, is difficult to reach effect two requirements that intensity is high and outward appearance is good simultaneously.And the cost of the patching material of high score subclass is high, poor durability, as modified epoxy class contains more easy volatile solvent composition, the easy act under moist and water environment does not significantly improve, and easy hollowing, peels off.
Inorganic patching material of the prior art such as publication number is CN104478371A, the patent of invention that name is called " agent of a kind of energy-saving concrete crack repairing ", and healant disclosed in this patent comprises sand 12 ~ 18 parts; Silica powder 5 ~ 10 parts; Ordinary Portland cement 20 ~ 35 parts; Aluminosulfate cement 10 ~ 18 parts; Water glass 6 ~ 12 parts; 5 ~ 9 parts, polyvinyl acetate emulsion powder; Silica flour 3 ~ 7 parts; Slag powders 7 ~ 10 parts; 6 ~ 9 parts, flyash; Swelling agent 8 ~ 10 parts; Polycarboxylic acid series high efficiency water reducing agent 0.4 ~ 0.6 part; Polypropylene fibre 0.2 ~ 0.4 part.The silicate cement of this patent and the mixed unstable properties of aluminosulfate cement, the instability of whole repairing body may be caused, polypropylene fibre belongs to organic polymer material in addition, may be ground off by punching in water pipe and directly enter water source, pollute, and its length is 9mm, be not suitable for the repairing in PCCP pipe 1 ~ 3mm crack; This healant does not adjust for color, can not make the effect that its overall appearance reaches consistent.The intensity of this healant and the Strength mis match of C50PCCP pipe conventional at present, can cause disadvantageous effect for later stage weather resistance.
Summary of the invention
The present invention is intended to solve inorganic crack repairing agent in prior art can not meet the problem that intensity is high and outward appearance is good simultaneously, and the cost of high score subclass patching material is high, the problem that application property is bad, the agent of a kind of Prestressed concrete cylinder pipe crack repairing is proposed, healant of the present invention can repairing concrete crack, meet the comprehensive physical performance of PCCP concrete duct and improve its weather resistance, making concrete surface color and luster consistent, promote visual appearance; Healant of the present invention is environmentfriendly products simultaneously, and environmentally safe, on water quality without impact; And be easy to construction, ensure construction quality.
In order to realize foregoing invention object, technical scheme of the present invention is as follows:
A kind of Prestressed concrete cylinder pipe crack repairing agent, is characterized in that: comprise following raw material by weight:
Silicate cement 25 ~ 60 parts;
Active filler 5 ~ 10 parts;
Water reducer 0.1 ~ 0.2 part;
Tinting dye 35 ~ 65 parts.
As preferably, described silicate cement is the one in silicate cement 42.5, silicate cement 52.5 and silicate cement P.I, and to ensure to repair the consistent with matrix of rear crack place, intensity is high, good endurance.
The effect of water reducer reduces to repair slurry mixing water amount, guarantees that healant has good workability, and can the intensity of raising healant to a certain degree; Water reducer of the present invention is preferably the one in High-efficiency polycarboxylic acid salt powder, naphthalene system silicate powder, and wide material sources, the range of application of these two kinds of water reducers are wide, has that adaptability is good, water-reducing rate is high, the advantage of good stability.
The effect of tinting dye is adding of tinting dye, can improve the color of whole slurry, consistent with concrete surface color and luster after making it harden, and obtains good visual appearance; Described tinting dye is preferably the mixture of unslaked lime, silica powder and limestone powder, and these three kinds of materials are inorganic mineral, good with the consistency of cement, easily obtains stable slurry, and volume wide ranges, production easily controls.
Further preferably, for unslaked lime accounts for 40 ~ 80% in the mixture of described unslaked lime, silica powder and limestone powder, silica powder accounts for 5 ~ 50%; Limestone powder accounts for 5 ~ 20%.
Silica powder composition is silicon-dioxide, has certain activity, equally can with calcium hydroxide reaction, generate hydrated calcium silicate, improve intensity, reduce harmful substances; Unslaked lime not only as the main raw of adjustable colors, can be released heat after itself and water react, more be conducive to the performance of cement early strength; Limestone powder is the important raw and processed materials of calcine cement, cheap, and limestone powder can fill space equally, improves degree of compactness, but more effect is adjustable colors, improves the outward appearance consistence after repairing.Account for 40 ~ 80% by specified proportion and unslaked lime, silica powder accounts for 5 ~ 50%; Limestone powder accounts for the setting of 5% ~ 20%, after can ensureing that healant of the present invention is repaired, possesses strength consistency and all good advantage of outward appearance consistence simultaneously.
Active filler effectively can starch internal void by filling concrete, and active filler of the present invention is preferably the one in nano silicon, slag powders, and nano silicon selects median size to be the nano silicon of 20 ~ 100nm; The slag powders of slag powders Selection radio surface-area >=500m2/Kg; Two kinds of active fillers can not only fill space, secondary hydration can also be carried out, consume the calcium hydroxide produced in cement hydration process, and the calcium hydroxide that unslaked lime produces, generate hydrated calcium silicate, reduce the harmful substance contents in product, improve weather resistance, promote that grout stable long-term strength increases.
Compared to prior art, beneficial effect of the present invention is as follows:
(1) crack repairing agent of the present invention is by material choice and specific proportion design, can the crack of mending concrete, meet the comprehensive physical performance of PCCP concrete duct, and improve the weather resistance of mend, after repairing, the strength consistency of mend and pipe fitting is good, appearance looks elegant, without obviously repairing vestige, and environmentally safe.
(2) support demoulding strength after PCCP pipe steaming at present and be about 20MPa, ground on the scene is placed after 8 ~ 24 hours and is dispatched from the factory, this healant is constructed after the pipe demoulding, within 8 hours, intensity level can reach 15Mpa, within 24 hours, intensity level can reach 30MPa, substantially be consistent with matrix strength, ensure the consistence of body intensity.Intensity unanimously reduces can the internal stress effect of body inner concrete, ensures the integrity of later stage body, particularly important containing the water delivery engineering of sand for the Northwest etc., intensity is inconsistent, easily causes abrasion loss different, will be formed " cavitation corrosion ", unstable wear, accelerates the failure, and reduces weather resistance; Healant of the present invention is while ensuring the quality of products, and outward appearance consistence is also good, while improving product appearance quality, improves the competitive power of product, thus improves the economic benefit of enterprise.
Embodiment
Embodiment 1
A kind of Prestressed concrete cylinder pipe crack repairing agent, comprises following raw material by weight:
Silicate cement 60 parts;
Active filler 2 parts;
Water reducer 0.1 part;
Tinting dye 65 parts;
The silicate cement of the present embodiment selects silicate cement 42.5; Active filler selects median size to be the nano silicon of 60nm; Water reducer is the High-efficiency polycarboxylic acid salt of powder, and toning agent is the mixture of unslaked lime, silica powder and limestone powder, and blending ratio is 4:5:1.
Embodiment 2
A kind of Prestressed concrete cylinder pipe crack repairing agent, comprises following raw material by weight:
Silicate cement 25 parts;
Active filler 10 parts;
Water reducer 0.1 part;
Tinting dye 35 parts;
The silicate cement of the present embodiment selects silicate cement P.I.Water reducer is the High-efficiency polycarboxylic acid salt of powder; Active filler selects median size to be the nano silicon of 100nm; Toning agent is the mixture of unslaked lime, silica powder and limestone powder, and blending ratio is 13:6:1.
Embodiment 3
A kind of Prestressed concrete cylinder pipe crack repairing agent, comprises following raw material by weight:
Silicate cement 45 parts;
Active filler 5 parts;
Water reducer 0.2 part;
Tinting dye 50 parts;
The silicate cement of the present embodiment selects silicate cement 52.5; Water reducer is the naphthalene system hydrochlorate of powder, and because healant of the present invention is powder, therefore water reducer also selects powder to be good; Active filler selects median size to be the nano silicon of 20nm; Toning agent is the mixture of unslaked lime, silica powder and limestone powder, and blending ratio is 15:1:4;
Embodiment 4
A kind of Prestressed concrete cylinder pipe crack repairing agent, comprises following raw material by weight:
Silicate cement 35 parts;
Active filler 10 parts;
Water reducer 0.18 part;
Tinting dye 55 parts;
The silicate cement of the present embodiment selects silicate cement 42.5, and water reducer is the High-efficiency polycarboxylic acid salt of powder, and toning agent is the mixture of unslaked lime, silica powder and limestone powder, and blending ratio is 3:1:1; The active filler of the present embodiment is slag powders, and specific surface area is 500m2/Kg.
Embodiment 5
A kind of Prestressed concrete cylinder pipe crack repairing agent, comprises following raw material by weight:
Silicate cement 35 parts;
Active filler 8 parts;
Water reducer 0.15 part;
Tinting dye 40 parts;
The silicate cement of the present embodiment selects silicate cement 52.5, and water reducer is the High-efficiency polycarboxylic acid salt of powder, and toning agent is the mixture of unslaked lime, silica powder and limestone powder, and blending ratio is 13:5:2; The active filler of the present embodiment is slag powders, and specific surface area is 600m2/Kg.
Embodiment 6
A kind of Prestressed concrete cylinder pipe crack repairing agent, comprises following raw material by weight:
Silicate cement 30 parts;
Active filler 10 parts;
Water reducer 0.13 part;
Tinting dye 65 parts;
The silicate cement of the present embodiment selects silicate cement P.I, water reducer is the High-efficiency polycarboxylic acid salt of powder, and toning agent is the mixture of unslaked lime, silica powder and limestone powder, and blending ratio is 9:10:1, the active filler of the present embodiment is slag powders, specific surface area 800m2/Kg.
When using healant of the present invention to repair Prestressed concrete cylinder pipe, need first crack to be cleaned out, accomplish inclusion-free, free from dust, then use water-wet, the addition of water is: every 1kg healant powder, adds the tap water of 260 ~ 350g, after stirring, according to fracture width, selection spatula or hairbrush are filled up, finally by surface with hairbrush brushing evenly.
Healant slump test reference standard " GB/T8077-2000 Methods for testing uniformity of concrete admixture ", the healant slurry configured is measured according to the testing method in standard, slurry intensity detection is with reference to " GB/T17671-2011 cement mortar strength test ", by shaping according to the requirement in standard for the repairing slurry configured, maintenance, measure the ultimate compression strength of 8 hours and 24 hours, measurement result is as following table 1:
Table 1:
From upper table 1, healant of the present invention 8 hours intensity levels can reach 15.2Mpa, and within 24 hours, intensity level can reach 30MPa, can be consistent with the intensity of matrix, improve body uniform force, extend the work-ing life of concrete pipe.
The above is only preferred embodiment of the present invention, and not do any pro forma restriction to invention, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present invention, all falls within protection scope of the present invention.
Claims (6)
1. a Prestressed concrete cylinder pipe crack repairing agent, is characterized in that: comprise following raw material by weight:
Silicate cement 25 ~ 60 parts;
Active filler 5 ~ 10 parts;
Water reducer 0.1 ~ 0.2 part;
Tinting dye 35 ~ 65 parts.
2. a kind of Prestressed concrete cylinder pipe crack repairing as claimed in claim 1 agent, is characterized in that: described silicate cement is the one in silicate cement 425, silicate cement 525 and silicate cement P.I.
3. a kind of Prestressed concrete cylinder pipe crack repairing as claimed in claim 1 agent, is characterized in that: described water reducer is the one in High-efficiency polycarboxylic acid salt powder, naphthalene system silicate powder.
4. a kind of Prestressed concrete cylinder pipe crack repairing as claimed in claim 1 agent, is characterized in that: described tinting dye is the mixture of unslaked lime, silica powder and limestone powder.
5. a kind of Prestressed concrete cylinder pipe crack repairing as claimed in claim 4 agent, is characterized in that: in the mixture of described unslaked lime, silica powder and limestone powder, unslaked lime accounts for 40 ~ 80%, and silica powder accounts for 5 ~ 50%, and limestone powder accounts for 5 ~ 20%.
6. a kind of Prestressed concrete cylinder pipe crack repairing agent as described in any one of Claims 1 to 5, is characterized in that: described active filler is the one in nano silicon, slag powders, and the median size of described nano silicon is 20 ~ 100nm; Specific surface area >=the 500m2/Kg of described slag powders.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510750412.1A CN105218027B (en) | 2015-11-06 | 2015-11-06 | A kind of crack repairing agent of Prestressed concrete cylinder pipe |
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| CN201510750412.1A CN105218027B (en) | 2015-11-06 | 2015-11-06 | A kind of crack repairing agent of Prestressed concrete cylinder pipe |
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| CN105218027B CN105218027B (en) | 2017-10-24 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110081267A (en) * | 2019-03-27 | 2019-08-02 | 北京京燕水务有限公司 | PCCP pipeline breaking renovation technique |
| CN112681788A (en) * | 2020-12-07 | 2021-04-20 | 国网辽宁省电力有限公司锦州供电公司 | Rapid repairing method for prestressed concrete pole crack |
| CN112777983A (en) * | 2021-01-08 | 2021-05-11 | 北京工业大学 | Concrete rapid repairing material and preparation method thereof |
| CN114315291A (en) * | 2022-02-11 | 2022-04-12 | 陕西秦汉恒盛新型建材科技股份有限公司 | Fair-faced concrete surface defect repairing material and preparation method thereof |
| CN114409323A (en) * | 2022-03-31 | 2022-04-29 | 中铁十八局集团第四工程有限公司 | High-adhesion repair concrete for PCCP (prestressed concrete cylinder pipe) pipe emergency repair and preparation method thereof |
| TWI783367B (en) * | 2021-02-04 | 2022-11-11 | 毅馨國際有限公司 | Pipe filling material and method of filling pipe without wall drilling |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081267A (en) * | 2019-03-27 | 2019-08-02 | 北京京燕水务有限公司 | PCCP pipeline breaking renovation technique |
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| CN112681788A (en) * | 2020-12-07 | 2021-04-20 | 国网辽宁省电力有限公司锦州供电公司 | Rapid repairing method for prestressed concrete pole crack |
| CN112777983A (en) * | 2021-01-08 | 2021-05-11 | 北京工业大学 | Concrete rapid repairing material and preparation method thereof |
| TWI783367B (en) * | 2021-02-04 | 2022-11-11 | 毅馨國際有限公司 | Pipe filling material and method of filling pipe without wall drilling |
| CN114315291A (en) * | 2022-02-11 | 2022-04-12 | 陕西秦汉恒盛新型建材科技股份有限公司 | Fair-faced concrete surface defect repairing material and preparation method thereof |
| CN114409323A (en) * | 2022-03-31 | 2022-04-29 | 中铁十八局集团第四工程有限公司 | High-adhesion repair concrete for PCCP (prestressed concrete cylinder pipe) pipe emergency repair and preparation method thereof |
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| CN105218027B (en) | 2017-10-24 |
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