CN105888279A - Processing method of commercial concrete floor cracks - Google Patents
Processing method of commercial concrete floor cracks Download PDFInfo
- Publication number
- CN105888279A CN105888279A CN201610244955.0A CN201610244955A CN105888279A CN 105888279 A CN105888279 A CN 105888279A CN 201610244955 A CN201610244955 A CN 201610244955A CN 105888279 A CN105888279 A CN 105888279A
- Authority
- CN
- China
- Prior art keywords
- crack
- concrete floor
- processing method
- commerical ready
- mixed concrete
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- E04G23/0288—Repairing or restoring floor slabs
Abstract
The invention relates to a processing method of commercial concrete floor cracks. The processing method of the commercial concrete floor cracks comprises the following steps of analyzing crack formation reasons after discovering the commercial concrete floor cracks; looking for crack generation reasons, and making a solution aiming at the generation reasons; carrying out wall crack processing according to the solution, and continuously observing processed walls. The processing method of the commercial concrete floor cracks disclosed by the invention is scientific and reasonable, different solutions are made aiming at different generation reasons, and the concrete floor cracks can be repaired more effectively.
Description
Technical field
The present invention relates to concrete product post-processing technique field, be specifically related to the processing method of a kind of commerical ready-mixed concrete floor crack.
Background technology
Along with the fast development of commerical ready-mixed concrete, the appearance of the concrete such as the use of additive, large fluidity, high intensity, distress in concrete with and give birth to, be the most commonly seen quality problems of concrete, be also one of problem of having a headache the most in industry.Mr. Yang Wenke mention in " problem of modern concrete science and research " book " before 30 years, who dare oneself construction concrete works have crack？Today, who dares the concrete works free from flaw that oneself is constructed " [1].As can be seen here, crack problem is the most universal, and some areas present the phenomenon growed in intensity, and distress in concrete annoyings field engineer always, and the moment affects the durability of modern concrete.Therefore, the most correctly process distress in concrete, become the problem needing in the industry to solve.
Summary of the invention
For solving the above-mentioned problems in the prior art, the invention provides the processing method of a kind of commerical ready-mixed concrete floor crack.
The technique effect of the present invention is achieved through the following technical solutions:
The processing method of a kind of commerical ready-mixed concrete floor crack, comprises the following steps: after finding commerical ready-mixed concrete floor crack, fracture Crack cause is analyzed；Find causes of cracks, and formulate solution for producing cause；Carry out cracking of wall surface process according to solution, and metope after processing is carried out continuous observation.
Further, described crack is crosscutting concern.
Further, described Crack cause causes for adding water in concrete when transportation tank car discharging in work progress starching stone separation.
Further, described Crack cause also includes not carrying out quadric-plastering and overlay film maintenance to pouring beam slab.
Further, described solution includes: first: process surface checking；Second: obvious crack is processed.
Further, described crackle is Temperature Cracks.
Further, described Crack cause is that temperature is high and dry, and concrete dehydration is very fast, and reaction is fast, the most repeatedly wipes one's face and does not take maintenance measure so that inside concrete and the outside temperature difference are big, and temperature stress cracks.
Further, described solution is: crackle occurring, removing surface is clean, lays silk screen thereon, then pour the waterproof slightly expanded concrete of microlith on silk screen.
Further, described Crack cause causes concrete to mix with profit pump water for violating job specfication.
The invention has the beneficial effects as follows:
The processing method of commerical ready-mixed concrete floor crack disclosed in this invention, scientific and reasonable, formulate different solutions for different producing cause, it is possible to more efficiently make up cracks on concrete floor.
Detailed description of the invention
The present invention is realized by detailed description below:
Embodiment one:
It is the January that certain engineering pours the time, pours third layer beam slab and crack occurs.Concrete design strength is C30, identifies this position, detects analysis, and 10d concrete springback intensity is 22.6MPa, and concrete strength meets normal development of age.By water-storing test, for non-penetrating crack, the most a width of about the 1mm of fracture width, minimum 0.5mm, the state that big bottom is little in top, the penetration of fracture is at 10-40mm, and length is between 0.2-1.5m.
Crack cause
Cast-in-situ beam slab was constructed in the January, and this area is in season in severe winter, and the temperature difference is relatively big sooner or later, and noon, temperature was at 20 DEG C, nocturnal temperature is only 8 DEG C, and that night all blows powerful north wind to second day noon, dry, concrete dehydration is very fast, and temperature is low, early age strength of concrete slower development.In work progress, this beam slab concrete uses Vehicle loaded pump in pumping, pumping line is longer, pump machine insufficient pressure, for making concrete be more conducive to conveying, add water situation when transportation tank car discharging, when causing being pumped to this beam slab working face, this position concrete uniformity is poor, occurs that slight slurry stone separates.After construction terminates, the most do not carry out quadric-plastering and film covering curing to pouring beam slab.Therefore, irregular cracks is produced.
Processing scheme
Concrete processing scheme is as follows.
(1) surface checking processes.Being cleaned up by pending concrete surface, after drying with fine, soft fur brush brushwork epoxy resin slurries repeatedly at surface checking line, each certain time (once brushing the most dry before treating) brushes once, and brushing thickness is till covering crackle.
(2) for obvious crack, surface clean is clean.Axis centered by crack, is in the shape of the letter V along both sides, crack about 2cm and chisels, and blows clean with air compressor machine punching.First uniformly prepare (as excessively thickness can slightly be diluted with water) according to 1:1 with aqueous epoxy resins and curing agent, embedding mend in bottom portion of groove, afterwards with waterproof microdilatancy mortar screeding and compaction, film covering curing.
Later stage follows the tracks of
Being tracked the treatment effect at this position observing, intensity detection is qualified, and does not occur leaking, processes position from phenomenons such as new cracking, the development of edge, old crack and the peelings of cement mortar face, and process produces a desired effect.
Embodiment 2:
Certain engineering, designs three layers of office building, and intensity is C25, and crack occurs in top layer.Identifying this layer, detect analysis, 15d concrete springback intensity is about 26MPa, and concrete strength meets normal development of age, and xoncrete structure is no problem.The flooring of 200 square metres, has 4 0.5-1.8m, after form removal, infiltration phenomenon occurs from following observation flooring, and wherein 3 is crosscutting concern.
Crack cause
Engineering time is September, and temperature is high and is dried, and concrete dehydration is very fast, and reaction is fast, the most repeatedly wipes one's face and does not take maintenance measure so that inside concrete and the outside temperature difference are big, and temperature stress produces, and belongs to typical thermal cracking.
Processing scheme
Owing to belonging to top layer crosscutting concern, the first roof of storied building at whole 200 square metres cleans up, and repaves Φ 4*150*150mm steel wire, then the thick waterproof slightly expanded concrete of microlith of 4-5mm is poured above, the maintenance of receipts face is good, after 28d age, finally does water-proofing treatment above.
Later stage follows the tracks of
This engineering has been put into using 2 years half, and currently without occurring that concrete comes off, leaks and the phenomenon such as infiltration, treatment effect is good.
Embodiment 3
Certain engineering, designs 18 layers of residential building, and beam slab intensity is C25, and this building is divided into 4 unit, belongs to three Rooms, room two two and defends house type, one of the 12nd layer take four articles of beams as four limits grid in, occur that area is about 20 square metres without dew palpebral fissure seam but the phenomenon of infiltration.Identifying this layer, detect analysis, the concrete strength at other positions is normal, but this position low strength, and occur leaking sand holes phenomenon, seep water the most serious.
Crack cause
Make land used pump conveying equipment the most, before carrying out concrete pumping, first with water and mortar profit pump.Reflect according to field worker, the mixed material of profit pump water and mortar is not walked clearly with tower crane, and directly it is discharged to this position, the concrete immediately come up mixes with substantial amounts of profit pump water, cause 2-3 cube of initial concrete to make low strength because stirring into too much water, belong to serious not causing according to job specfication behavior.
Processing scheme
Owing to this concrete has been mixed into excess water, the ratio of mud has changed by, and intensity step-down is irreversible.And belong to little high-rise house owed by a citizen, consider for safety and quality, this position is pounded, edge dabbing, from new formwork, pour C30 slightly expanded concrete.
Later stage follows the tracks of
After maintenance reaches 28d age, this position is carried out technical appraisement, be fully achieved anticipated requirement.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, it is not limited to the present invention, although the present invention being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (9)
1. the processing method of a commerical ready-mixed concrete floor crack, it is characterised in that: comprise the following steps: after finding commerical ready-mixed concrete floor crack, fracture Crack cause is analyzed；Find causes of cracks, and formulate solution for producing cause；Carry out cracking of wall surface process according to solution, and metope after processing is carried out continuous observation.
The processing method of a kind of commerical ready-mixed concrete floor crack the most according to claim 1, it is characterised in that: described crack is crosscutting concern.
The processing method of a kind of commerical ready-mixed concrete floor crack the most according to claim 2, it is characterised in that: described Crack cause causes starching stone and separates for adding water in concrete when transportation tank car discharging in work progress.
The processing method of a kind of commerical ready-mixed concrete floor crack the most according to claim 3, it is characterised in that: described Crack cause also includes not carrying out quadric-plastering and overlay film maintenance to pouring beam slab.
The processing method of a kind of commerical ready-mixed concrete floor crack the most according to claim 4, it is characterised in that: described solution includes: first: process surface checking；Second: obvious crack is processed.
The processing method of a kind of commerical ready-mixed concrete floor crack the most according to claim 1, it is characterised in that: described crackle is Temperature Cracks.
The processing method of a kind of commerical ready-mixed concrete floor crack the most according to claim 6, it is characterized in that: described Crack cause is that temperature is high and dry, concrete dehydration is very fast, reaction is fast, the most repeatedly wipe one's face and do not take maintenance measure, making inside concrete and the outside temperature difference big, temperature stress cracks.
8. according to the processing method of a kind of commerical ready-mixed concrete floor crack described in claim 6 or 7, it is characterised in that: described solution is: crackle occurring, removing surface is clean, lays silk screen thereon, then pour the waterproof slightly expanded concrete of microlith on silk screen.
The processing method of a kind of commerical ready-mixed concrete floor crack the most according to claim 1, it is characterised in that: described Crack cause causes concrete to mix with profit pump water for violating job specfication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610244955.0A CN105888279A (en) | 2016-04-19 | 2016-04-19 | Processing method of commercial concrete floor cracks |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610244955.0A CN105888279A (en) | 2016-04-19 | 2016-04-19 | Processing method of commercial concrete floor cracks |
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| CN105888279A true CN105888279A (en) | 2016-08-24 |
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| CN201610244955.0A Pending CN105888279A (en) | 2016-04-19 | 2016-04-19 | Processing method of commercial concrete floor cracks |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457485A (en) * | 2018-02-06 | 2018-08-28 | 厦门防水博士建筑工程有限公司 | A kind of concrete floor cracking percolating water repairerment technique |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR890001380B1 (en) * | 1984-10-31 | 1989-05-02 | 장종근 | Filling method for crack in concrete structure |
| CN101294446A (en) * | 2007-04-28 | 2008-10-29 | 段智斌 | Anticracking processing method for wall surface |
-
2016
- 2016-04-19 CN CN201610244955.0A patent/CN105888279A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR890001380B1 (en) * | 1984-10-31 | 1989-05-02 | 장종근 | Filling method for crack in concrete structure |
| CN101294446A (en) * | 2007-04-28 | 2008-10-29 | 段智斌 | Anticracking processing method for wall surface |
Non-Patent Citations (1)
| Title |
|---|
| 赖云: "《商品混凝土楼面裂缝成因及控制》", 《山西建筑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457485A (en) * | 2018-02-06 | 2018-08-28 | 厦门防水博士建筑工程有限公司 | A kind of concrete floor cracking percolating water repairerment technique |
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Application publication date: 20160824 |
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