CN105675851A - Paper pasting method for identifying whether cracks of reinforced concrete structure expand continuously - Google Patents
Paper pasting method for identifying whether cracks of reinforced concrete structure expand continuously Download PDFInfo
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- CN105675851A CN105675851A CN201610063908.6A CN201610063908A CN105675851A CN 105675851 A CN105675851 A CN 105675851A CN 201610063908 A CN201610063908 A CN 201610063908A CN 105675851 A CN105675851 A CN 105675851A
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 43
- 230000006378 damage Effects 0.000 claims abstract description 10
- 208000010392 Bone Fractures Diseases 0.000 claims description 50
- 206010017076 Fracture Diseases 0.000 claims description 50
- 239000004567 concrete Substances 0.000 claims description 19
- 230000003203 everyday effect Effects 0.000 claims description 16
- 230000001066 destructive effect Effects 0.000 claims description 14
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 13
- 238000011161 development Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000003292 glue Substances 0.000 description 6
- 230000007774 longterm Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 206010061245 Internal injury Diseases 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000009500 colour coating Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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Abstract
The invention discloses a paper pasting method for identifying whether cracks of a reinforced concrete structure expand continuously. According to the method, paper is pasted on original cracks in the surface of the reinforced concrete structure, and whether the cracks in the surface of the reinforced concrete structure expand continuously is judged preliminarily by observing whether cracks are produced in the paper continuously and whether the crack width further expands. With the adoption of the economical, applicable, reliable and simple method, whether the cracks in the surface of the current reinforced concrete structure is harmful or not can be identified, the technology for detecting whether the cracks of the reinforced concrete structure expand continuously is simplified, and damage due to the fact that continuous expansion of the crack width of the reinforced concrete structure cannot be found timely can be prevented effectively.
Description
Technical field
The present invention relates to building detection technique field, be specifically related to a kind of identify whether concrete structure crack continues the sticker method extended.
Background technology
The structures such as the beam of reinforced concrete structure such as building construction, plate, post, due to settlement of foundation, the reason such as environmental change or the fatigue of load long term, corrosion is used often to make structure produce internal injury in various degree, and these damages directly can show as body structure surface cracking during one's term of military service in structure, form structural surface crack. Structural damage, after year in year out accumulative, necessarily cause that structural cracks width extends, when fracture propagation to structure tensile region reinforcement yielding, will result in reinforcing bar and break and cause that it destroys. In general, reinforced concrete work is once destroy, and the Loss of Life and property brought will be huge, and national economy is far-reaching and difficult to the appraisal especially with the impact of society.
In use, body structure surface is often with cement sand plaster, then drapes over one's shoulders putty white color coating reinforced concrete structure, and this surface such as fruit structure occurs that crack will clearly display. And cause that the reason in generation crack, reinforced concrete structure surface has: the crack 1. produced due to concrete plastic shrinkage; 2. the crack caused due to concrete drying shrinkage; 3. the crack that concrete causes because of variations in temperature; 4. the crack that xoncrete structure gene basis differential settlement causes; 5. improper load action and the crack that causes; 6. because of crack that the reasons such as design, material, construction and use cause; 7. other reasons, as because of mortar and the crack etc. that concrete surface causes in conjunction with bad generation hollowing.
Reinforced concrete structure is multicomponent composite materials, when the change of various conditions and the deformation of various materials are inconsistent, the generation of micro crack is nearly unavoidable, if this micro-cracks does not extend, the normal use of general industry with civil buildings is not resulted in harm by it. Because micro crack a kind of crack that to be inside concrete intrinsic, it is incoherent, is generally present in inside xoncrete structure, smaller, and fracture width is under normal circumstances less than 0.5mm.So for reinforced concrete structure, there is a degree of crack in the armored concrete particularly having abundant constructional reinforcement, by observing its surface crack width, as long as fracture width does not extend or small extension to a certain extent, all being not result in the ineffectiveness destruction of structure, this crack should be surface crack routinely. Otherwise, if by observing, find that reinforced concrete structure surface crack continues to extend or degree of expansion is bigger, will consider that the reason that reinforced concrete structure produces crack carries out labor, even structure is carried out consolidation process, preventing fracture width from further expanding, this crack should for having destructive structural crack.
Summary of the invention
The technical problem to be solved is to provide a kind of economy, is suitable for, whether reinforced concrete structure surface crack width simple and easy, reliable continues the recognition methods that extends, it is intended for the Preliminary screening of reinforced concrete structure surface crack width, dynamically observe the long-run development situation in crack, judge whether crack is harmful cracks, it is prevented that reinforced concrete structure finds or process impaired not in time because of fracture width extension. Use the method, it is possible to fast and effeciently identify that reinforced concrete structure surface crack is surface crack routinely or has destructive structural crack.
For solving above-mentioned technical problem, the technical solution used in the present invention is as follows:
A kind of identify whether concrete structure crack continues the sticker method extended, comprise the following steps:
1) by perusal reinforced concrete structure, range estimation crack produce region and position, it is determined that primary fracture region, and primary fracture region paste on paper;
2) at least observe a paper every day by the method for directly range estimation after, check the spread scenarios after having free from flaw generation and crack to produce above paper;
3) by the observation of at least 28 days, as paper does not find crackle, primary fracture not developing deeply is described, for surface crack routinely, structure itself is not resulted in harm, only need to process a little or not process and can ensure that reinforced concrete structure normally uses;
4) as paper produces new crack, illustrate that primary fracture is also in development, then need dynamically to observe further;
5) in carrying out dynamically observation, by the observation of at least 7 days,
5.1) as just can directly found by naked eyes, fracture width is progressively extending, and illustrates that this crack is a kind of destructive structure crack, and specialty team need to be asked to detect further or reinforce;
5.2) as can not be directly found that fracture width is progressively extending by naked eyes, at this moment need on this paper, paste 1 paper again, at least observe a paper every day by the method for directly range estimation afterwards, by the observation of at least 28 days; A) as paper does not find crackle, illustrate that this crack is also more stable, only need to process a little and can ensure that structure normally uses; B) as paper produces new crack, it was shown that primary fracture width is continuing extension, illustrate that primary fracture is a kind of destructive structure crack, specialty team need to be asked to detect further or reinforce.
Such scheme is preferred, in step 1) in, after pasting paper, with flatiron or hair dryer, paper is flattened, make paper and reinforced concrete structure surface mount firm.
Such scheme is preferred, in step 1) in, before pasting paper, first primary fracture region surface is cleaned.
Such scheme is preferred, and described paper is pure white and inelastic paper.
Such scheme is preferred, and described paper is the paper that hardness is moderate.
Such scheme is preferred, 5.2), in b), as paper produces new crack, 1 paper can be pasted on this paper again, at least observe a paper every day by the method for directly range estimation afterwards, by the observation of 31 days; As paper does not find crackle, illustrate that this crack is also more stable, only need to process a little and can ensure that structure normally uses; As paper produces new crack, it was shown that primary fracture width is continuing extension, illustrate that primary fracture is a kind of destructive structure crack, specialty team need to be asked to detect further or reinforce.
Compared with prior art, the invention have the advantages that
1, a kind of method economic, applicable, reliable, easy is used, just can recognise that existing R.C. structures surface crack is harmless crack or harmful cracks, whether concrete structure crack is continued the detection technique summary extended, can effectively prevent reinforced concrete structure from can not find, because of the lasting extension of fracture width, the infringement caused in time, ensure the safety of life and property of the people.
2, compared to existing technology in the middle of specialized company please carry out structure detection, cause that testing cost is high, the deficiency of length consuming time, this programme drastically reduce the area people's input to reinforced concrete structure conventional sense, more economical is suitable for.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the reinforced concrete structure that crack occurs;
Fig. 2 is the schematic diagram of the reinforced concrete structure pasting paper;
Fig. 3 is the schematic diagram that crack occurs the paper on reinforced concrete structure;
Fig. 4 is be the process chart of the present invention.
Number in the figure: 1, reinforced concrete structure; 2, primary fracture; 3, paper; 4, new crack.
Detailed description of the invention
Embodiment 1
A kind of identify whether concrete structure crack continues the sticker method extended, as shown in the process chart of Fig. 4, comprise the following steps:
1) discovery (generation in range estimation discovery crack and region) of reinforced concrete structure 1 surface primary fracture 2, determine the position pasting paper 3 above crack, then carry out pasting the cleaning of paper 3 basal plane, and select hardness moderate, pure white and inelastic paper 3 applies glue, again the paper 3 scribbling glue is pasted onto on the crack on reinforced concrete structure 1 surface, and make the paper 3 area more than crack, with flatiron or hair dryer, paper 3 is flattened, make paper 3 and reinforced concrete structure 1 surface mount firm, such as Fig. 1, shown in 2.
2) at least observe a paper 3 every day by the method for range estimation after, check that paper 3 has free from flaw to produce, and the spread scenarios after the generation of crack.
3) by the observation of 28 days, as paper 3 does not find crackle, primary fracture 2 not developing deeply is described, for surface crack routinely, structure itself is not resulted in harm, only need to process a little or not process and can ensure that reinforced concrete structure 1 normally uses;
4) as paper 3 produces new crack 4, as it is shown on figure 3, illustrate that primary fracture 2 is also in development, then need dynamically to observe further.
5) in carrying out dynamically observation, still at least observe a paper 3 every day by the method for range estimation, check that whether new crack 4 width of paper 3 is in extension, by the observation of long-term 7 days;
5.1) as just can directly found by naked eyes, fracture width is progressively extending, and illustrates that this crack is a kind of destructive structure crack, and specialty team need to be asked to detect further or reinforce;
5.2) as can not be directly found that fracture width is progressively extending by naked eyes, at this moment need on this paper, paste 1 paper again, at least observe a paper 3 every day by the method for directly range estimation afterwards, by the observation of 28 days; A) as paper 3 does not find crackle, illustrate that this crack is also more stable, only need to process a little and can ensure that structure normally uses; B) as paper 3 produces new crack 4, it was shown that primary fracture 2 width is continuing extension, illustrate that primary fracture 2 is a kind of destructive structure crack, specialty team need to be asked to detect further or reinforce.
Embodiment 2
A kind of identify whether concrete structure crack continues the sticker method extended, as shown in the process chart of Fig. 4, comprise the following steps:
1) discovery (generation in range estimation discovery crack and region) of reinforced concrete structure 1 surface primary fracture 2, determine the position pasting paper 3 above crack, then carry out pasting the cleaning of paper 3 basal plane, and select hardness moderate, pure white and inelastic paper 3 applies glue, again the paper 3 scribbling glue is pasted onto on the crack on reinforced concrete structure 1 surface, and make the paper 3 area more than crack, with flatiron or hair dryer, paper 3 is flattened, make paper 3 and reinforced concrete structure 1 surface mount firm, such as Fig. 1, shown in 2.
2) at least observe a paper 3 every day by the method for range estimation after, check that paper 3 has free from flaw to produce, and the spread scenarios after the generation of crack.
3) by the observation of 30 days, as paper 3 does not find crackle, primary fracture 2 not developing deeply is described, for surface crack routinely, structure itself is not resulted in harm, only need to process a little or not process and can ensure that reinforced concrete structure 1 normally uses;
4) as paper 3 produces new crack 4, as it is shown on figure 3, illustrate that primary fracture 2 is also in development, then need dynamically to observe further.
5) in carrying out dynamically observation, still at least observe a paper 3 every day by the method for range estimation, check that whether new crack 4 width of paper 3 is in extension, by the observation of long-term 10 days;
5.1) as just can directly found by naked eyes, fracture width is progressively extending, and illustrates that this crack is a kind of destructive structure crack, and specialty team need to be asked to detect further or reinforce;
5.2) as can not be directly found that fracture width is progressively extending by naked eyes, at this moment need on this paper, paste 1 paper again, at least observe a paper 3 every day by the method for directly range estimation afterwards, by the observation of 32 days; A) as paper 3 does not find crackle, illustrate that this crack is also more stable, only need to process a little and can ensure that structure normally uses; B) as paper 3 produces new crack 4, it was shown that primary fracture 2 width is continuing extension, illustrate that primary fracture 2 is a kind of destructive structure crack, specialty team need to be asked to detect further or reinforce.
Embodiment 3
A kind of identify whether concrete structure crack continues the sticker method extended, as shown in the process chart of Fig. 4, comprise the following steps:
1) discovery (generation in range estimation discovery crack and region) of reinforced concrete structure 1 surface primary fracture 2, determine the position pasting paper 3 above crack, then carry out pasting the cleaning of paper 3 basal plane, and select hardness moderate, pure white and inelastic paper 3 applies glue, again the paper 3 scribbling glue is pasted onto on the crack on reinforced concrete structure 1 surface, and make the paper 3 area more than crack, with flatiron or hair dryer, paper 3 is flattened, make paper 3 and reinforced concrete structure 1 surface mount firm, such as Fig. 1, shown in 2.
2) at least observe a paper 3 every day by the method for range estimation after, check that paper 3 has free from flaw to produce, and the spread scenarios after the generation of crack.
3) by the observation of 35 days, as paper 3 does not find crackle, primary fracture 2 not developing deeply is described, for surface crack routinely, structure itself is not resulted in harm, only need to process a little or not process and can ensure that reinforced concrete structure 1 normally uses;
4) as paper 3 produces new crack 4, as it is shown on figure 3, illustrate that primary fracture 2 is also in development, then need dynamically to observe further.
5) in carrying out dynamically observation, still at least observe a paper 3 every day by the method for range estimation, check that whether new crack 4 width of paper 3 is in extension, by the observation of long-term 12 days;
5.1) as just can directly found by naked eyes, fracture width is progressively extending, and illustrates that this crack is a kind of destructive structure crack, and specialty team need to be asked to detect further or reinforce;
5.2) as can not be directly found that fracture width is progressively extending by naked eyes, at this moment need on this paper, paste 1 paper again, at least observe a paper 3 every day by the method for directly range estimation afterwards, by the observation of 31 days; A) as paper 3 does not find crackle, illustrate that this crack is also more stable, only need to process a little and can ensure that structure normally uses; B) as paper 3 produces new crack 4,1 paper 3 can be pasted on this paper 3 again, at least observe a paper 3 every day by the method for directly range estimation afterwards, by the observation of 31 days; As paper 3 does not find crackle, illustrate that this crack is also more stable, only need to process a little and can ensure that structure normally uses; As paper 3 produces new crack 4, it was shown that primary fracture 2 width is continuing extension, illustrate that primary fracture 2 is a kind of destructive structure crack, specialty team need to be asked to detect further or reinforce.
Claims (6)
1. one kind identifies whether concrete structure crack continues the sticker method extended, it is characterised in that comprise the following steps:
1) by perusal reinforced concrete structure (1), estimate region and position that crack produces, it is determined that primary fracture (2) region, and paste upper paper (3) in primary fracture (2) region;
2) at least observe a paper (3) every day by the method for directly range estimation after, check the spread scenarios after having free from flaw generation and crack to produce above paper (3);
3) by the observation of at least 28 days, as paper (3) does not find crackle, primary fracture (2) not developing deeply is described, for surface crack routinely, structure itself is not resulted in harm, only need to process a little or not process and can ensure that reinforced concrete structure (1) normally uses;
4) produce new crack (4) as paper (3) is upper, illustrate that primary fracture (2) is also in development, then need dynamically to observe further;
5) in carrying out dynamically observation, by the observation of at least 7 days,
5.1) as just can directly found by naked eyes, fracture width is progressively extending, and illustrates that this crack is a kind of destructive structure crack, and specialty team need to be asked to detect further or reinforce;
5.2) as can not be directly found that fracture width is progressively extending by naked eyes, at this moment need on this paper, paste 1 paper again, at least observe a paper (3) every day by the method for directly range estimation afterwards, by the observation of at least 28 days; A) as paper (3) does not find crackle, illustrate that this crack is also more stable, only need to process a little and can ensure that structure normally uses; B) new crack (4) is produced as paper (3) is upper, show that primary fracture (2) width is continuing extension, illustrate that primary fracture (2) is a kind of destructive structure crack, specialty team need to be asked to detect further or reinforce.
2. whether identification concrete structure crack according to claim 1 continues the sticker method that extends, it is characterized in that: in step 1) in, after pasting paper (3), with flatiron or hair dryer, paper (3) is flattened, make paper (3) and reinforced concrete structure (1) surface mount firm.
3. whether identification concrete structure crack according to claim 2 continues the sticker method that extends, it is characterised in that: in step 1) in, paste paper (3) front, first primary fracture (2) region surface is cleaned.
4. whether identification concrete structure crack according to claim 1 continues the sticker method that extends, it is characterised in that: described paper (3) is pure white and inelastic paper (3).
5. whether identification concrete structure crack according to claim 4 continues the sticker method that extends, it is characterised in that: described paper (3) is the moderate paper (3) of hardness.
6. according to claim 1-5 any one, identify whether concrete structure crack continues extend sticker method, it is characterized in that: 5.2) b) in, new crack (4) is produced as paper (3) is upper, 1 paper (3) can be pasted above again at this paper (3), a paper (3) is at least observed every day afterwards, by the observation of 31 days by the method for directly range estimation; As paper (3) does not find crackle, illustrate that this crack is also more stable, only need to process a little and can ensure that structure normally uses; Produce new crack (4) as paper (3) is upper, it was shown that primary fracture (2) width is continuing extension, illustrate that primary fracture (2) is a kind of destructive structure crack, specialty team need to be asked to detect further or reinforce.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108828199A (en) * | 2018-06-13 | 2018-11-16 | 陕西红柠铁路有限责任公司 | A method of concrete cracks are monitored using glass bar |
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| CN201122092Y (en) * | 2007-11-30 | 2008-09-24 | 容赞华 | Slit variation recording label |
| CN101968348A (en) * | 2010-09-07 | 2011-02-09 | 中国石油大学(北京) | Method for visually monitoring fracture crack |
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| CN108828199A (en) * | 2018-06-13 | 2018-11-16 | 陕西红柠铁路有限责任公司 | A method of concrete cracks are monitored using glass bar |
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