CN105891086A - Gap sealing method for water penetration resistance test of concrete - Google Patents
Gap sealing method for water penetration resistance test of concrete Download PDFInfo
- Publication number
- CN105891086A CN105891086A CN201610233231.6A CN201610233231A CN105891086A CN 105891086 A CN105891086 A CN 105891086A CN 201610233231 A CN201610233231 A CN 201610233231A CN 105891086 A CN105891086 A CN 105891086A
- Authority
- CN
- China
- Prior art keywords
- fluid sealant
- die trial
- sealing method
- water penetration
- gap sealing
- Prior art date
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000007589 penetration resistance test Methods 0.000 title abstract 2
- 238000012360 testing method Methods 0.000 claims abstract description 80
- 239000000565 sealant Substances 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims description 33
- 230000035515 penetration Effects 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 230000008676 import Effects 0.000 claims description 13
- 239000004568 cement Substances 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 5
- 239000005871 repellent Substances 0.000 claims description 5
- 230000010412 perfusion Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008595 infiltration Effects 0.000 description 13
- 238000001764 infiltration Methods 0.000 description 13
- 239000012188 paraffin wax Substances 0.000 description 7
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 239000004519 grease Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 235000014121 butter Nutrition 0.000 description 2
- 239000008393 encapsulating agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035943 smell Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a gap sealing method for a water penetration resistance test of concrete. The gap sealing method is characterized by comprising steps as follows: step one, at least one annular channel arranged in the circumferential direction is formed in the upper side of the inner wall of a test mold, and a sealant inlet and a sealant outlet are formed in the annular channel; step two, a concrete sample is loaded in the test mold; step three, a sealant is poured from the sealant inlet, and when the sealant flows out of the sealant outlet, the sealant poured at the sealant inlet is gradually pressurized to preset pressure, and the sealing is completed. The gap sealing method has the advantages of simple operation, high efficiency and good sealing effect.
Description
Technical field
The present invention relates to a kind of encapsulating method, particularly a kind of agent on crack resistance of concrete water penetration test gap sealing method.
Background technology
Need concrete sample to load die trial and by between test specimen and die trial when carrying out the test of agent on crack resistance of concrete water penetration
Gap sealing, to ensure the most not have water and flow out from the gap between test specimen and die trial.According to GB/T50082-
The method that 2009 " Standard for test methods of longterm performance and durability of ordinary concrete standards " are introduced is to use paraffin to add Colophonium or water
Mud adds the method such as butter or rubber case and seals or use other more reliable encapsulating methods.
Its concrete test procedure is:
1, from mark, agent on crack resistance of concrete water penetration test specimen is supported room after maintenance 28d under the conditions of standard curing to take out, and wiped clean.
2, with the gap between encapsulant sealed test piece and die trial after surface of test piece is dried: 1. when sealing with paraffin,
The paraffin of a small amount of Colophonium should be added in test specimen side is wrapped up in and is coated with one layer of fusing.Then test specimen press-in is passed through by application screw press device
In baking oven or the preheated die trial of resistance furnace, make test specimen flush with at the bottom of die trial, and should after die trial turns cold pressure relief.Die trial
Preheating temperature, should contact die trial with paraffin, the most slowly melt, but do not trickle and be as the criterion.When 2. adding grease seal with cement, its quality
Ratio should be (2.5～3): 1.Encapsulant is scratched on test specimen side by application triangular knife equably, and thickness should be (1～2) mm.
Upper testing mould should be overlapped and test specimen is pressed into, test specimen should be made to flush with at the bottom of die trial.3. rubber case is used directly rubber case to be enclosed within test specimen
Side, is pressed into test specimen in die trial together with rubber case.
3, test specimen is arranged on impervious testing machine and starts test.
Being not difficult to find out from specification describes, carry out this test it is crucial that by test specimen and die trial gap sealing, it is ensured that
Under test pressure, water will not ooze out from this gap, but according to practical operation through examining, in specification introduce 3 kinds of methods all
There is a defect in various degree:
1. add, with paraffin, the defect that Colophonium seals: firstly the need of by paraffin and Colophonium electric furnace scorification, die trial is also required to drying
Case or electric furnace preheating, need to take a substantial amount of time and manually, inefficiency here.Secondly, paraffin is added Colophonium scorification
During can give out pungent abnormal smells from the patient, healthy unfavorable to testing staff.
2. adding the defect of grease seal with cement: first, cement adds grease seal needs (2.5～3) in mass ratio: 1 adjusts
Even, need exist for expending certain artificial.Secondly, practical effect is bad, and cement and butter mixture intensity are low easily
Seepage, sealing effectiveness is bad；Demoulding difficulty after off-test that intensity is high, general ingot stripper at all cannot the demoulding.
3. the defect sealed with rubber case: first, sealing effectiveness is bad, often has what water oozed out from test specimen periphery
Situation.Secondly, when specimen sleeve is pressed in die trial after rubber case again, rubber case can have shearing action to test specimen, in practice often
It is found to have test specimen to cut off at rubber case, thus cannot be carried out height method test of seeping water.Because if after test specimen disconnects, pressure
Water penetration just cannot permeate up to end again, thus cannot measure the permeated height value of test specimen.
The most that method is all directly to seal the gap entirety between concrete sample and die trial,
Gap between concrete sample and die trial is the least, loads die trial the most difficult outside test specimen after environmental sealing glue, and
And have a large amount of glue and extruded from gap, abnormal smells from the patient is big, and after test, the demoulding is the most difficult, and die trial inwall after test
Being glue entirely, cleaning need to expend a large amount of manpower.
Summary of the invention
The technical problem to be solved is to provide a kind of agent on crack resistance of concrete water penetration test gap sealing method, its behaviour
Work is simple, efficiency is high, sealing effectiveness is good.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is:
A kind of agent on crack resistance of concrete water penetration test gap sealing method, it is characterised in that comprise the steps of
Step one: offer at least one circumferentially arranged annular groove on the upside of die trial inwall, annular groove is provided with close
Sealing import and fluid sealant outlet；
Step 2: concrete sample is loaded in die trial；
Step 3: irrigate fluid sealant from fluid sealant import, when fluid sealant outlet has fluid sealant out, fluid sealant import perfusion is close
Sealing is gradually forced into predetermined pressure and completes to seal.
Further, described die trial comprises die trial main body, flange, bracelet and bracelet support, and die trial main body is upper and lower two ends
All cylindrical tubes of opening, flange is fixed on die trial main body upper end and is wholely set with die trial main body, and flange has six edges
The screw of flange circumference spaced set, two bracelet supports are fixed on die trial main body both sides, and bracelet is hinged on bracelet support.
Further, described fluid sealant is water-repellent paint, and the degree of depth of annular groove is 2.5-3.5mm.
Further, described fluid sealant is glass cement, and the degree of depth of annular groove is 4.5-5.5mm.
Further, the width of described annular groove is 3-7cm.
Further, described predetermined pressure is 0.5MPa.
Further, the outlet of described fluid sealant import and fluid sealant is positioned at that the two ends of one radial direction of annular groove are relative to be set
Put.
The present invention compared with prior art, has the following advantages and effect:
1, simple to operate, only carry out the sealing of local, operating efficiency is high, improves the efficiency of agent on crack resistance of concrete water penetration test；
2, compared with directly sealing with original gap, first placing concrete sample, then seal, such test specimen is put into the most square
Just, basic non-resistance is operated；
3, sealing range is little, and the demoulding is easy, and only need to be cleaned annular groove after the demoulding, and plot efficiency is high；
4, being poured into annular groove by fluid sealant import, glue does not oozes out, and penetrating odor is little, and environmental pollution is little.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the die trial of the agent on crack resistance of concrete water penetration test of the present invention.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following example are to this
Bright explanation and the invention is not limited in following example.
As it can be seen, a kind of agent on crack resistance of concrete water penetration test gap sealing method of the present invention, comprise the steps of
Step one: offer at least one circumferentially arranged annular groove 6 on the upside of die trial inwall, annular groove is provided with close
Sealing import 7 and fluid sealant outlet 8；
Step 2: concrete sample is loaded in die trial；
Step 3: irrigate fluid sealant from fluid sealant import, when fluid sealant outlet has fluid sealant out, fluid sealant import perfusion is close
Sealing is gradually forced into predetermined pressure and completes to seal.
Die trial comprises die trial main body 1, flange 2, bracelet 3 and bracelet support 4, and die trial main body 1 is the equal openings in upper and lower two ends
Cylindrical tube, flange 2 is fixed on die trial main body 1 upper end and is wholely set with die trial main body 1, flange 2 has six along flange 2
The screw 5 of circumference spaced set, two bracelet supports 4 are fixed on die trial main body 1 both sides, and bracelet 3 is hinged on bracelet support 4
On.When fluid sealant is water-repellent paint, and the degree of depth of annular groove is 2.5-3.5mm.When fluid sealant is glass cement, annular groove deep
Degree is 4.5-5.5mm.Owing to water-repellent paint denseness is less than glass cement, when therefore using water-repellent paint, annular groove depth ratio uses
During glass cement, the degree of depth is low.
The width of annular groove is 3-7cm.Predetermined pressure is 0.5MPa, and pressure gradually boosts, thus ensures that fluid sealant is complete
Entirely fill whole annular groove.Fluid sealant import and fluid sealant outlet are positioned at the two ends of one radial direction of annular groove and are oppositely arranged.
After sealing completes, it is fixed on reverse for die trial on impervious testing machine and is bolted, then by infiltration height
Degree method or step by step pressurization are tested.
Infiltration height method: open 6 examination position under valves, make hydraulic pressure in 24h constant control at (1.2 ± 0.05) MPa,
And pressure process not should be greater than 5min, should be to reach the time of steady pressure as test data sheet initial time.In voltage stabilizing process
In observe the infiltration situation of test specimen end face at any time, when there being some test specimen end face that infiltration occurs, when should stop test and record
Between, and using the height of test specimen as the infiltration of this test specimen height.When there is not infiltration in test specimen end face, should be after 24h
Stopping test, and take out test specimen in time, it is two halves that test specimen prolongs vertical section splitting, and the infiltration measuring 10 measuring points is average
It is worth the infiltration height as this test specimen, the survey of the height that seeped water by the infiltration height average of one group of 6 test specimen as this group test specimen
Definite value.Process of the test is found to have water when test specimen periphery oozes out, test specimen should be resealed and again try behind die trial gap
Test.
Pressurization step by step: opening the valve under 6 examination positions, hydraulic pressure, from the beginning of 0.1MPa, should increase every 8h later
0.1MPa hydraulic pressure.When 6 test specimens there being 3 surface of test piece infiltration occurs, or it is forced into design seepage-resistant grade pressure in 8h 6
When individual surface of test piece infiltration test specimen is less than 3, test can be stopped, and write down now water pressure.The water resistant infiltration grade of concrete
10 should be multiplied by determine often to organize maximum water pressure when having 4 test specimens that infiltration does not occurs in 6 test specimens.Process of the test finds
There is water when test specimen periphery oozes out, test specimen should be resealed and again test behind die trial gap.
After completing test, concrete sample is taken out from die trial, owing to fluid sealant only exists in annular groove, so
Concrete sample takes out more convenient and strength-saving than original overall gap sealing many, and have only in annular groove after taking-up is close simultaneously
Sealing is struck off, and workload is little, by designing the Special scraper knife identical with channel width, removes glue the most convenient and strength-saving, significantly
Improve the efficiency of test.
Above content described in this specification is only illustration made for the present invention.Technology belonging to the present invention
Described specific embodiment can be made various amendment or supplements or use similar mode to substitute, only by the technical staff in field
The guarantor of the present invention all should be belonged to without departing from the content of description of the invention or surmount scope defined in the claims
Protect scope.
Claims (7)
1. an agent on crack resistance of concrete water penetration test gap sealing method, it is characterised in that comprise the steps of
Step one: offer at least one circumferentially arranged annular groove on the upside of die trial inwall, annular groove is provided with close
Sealing import and fluid sealant outlet；
Step 2: concrete sample is loaded in die trial；
Step 3: irrigate fluid sealant from fluid sealant import, when fluid sealant outlet has fluid sealant out, fluid sealant import perfusion is close
Sealing is gradually forced into predetermined pressure and completes to seal.
2. test gap sealing method according to the agent on crack resistance of concrete water penetration described in claim 1, it is characterised in that: described die trial bag
Containing die trial main body, flange, bracelet and bracelet support, die trial main body is the cylindrical tube of the equal opening in upper and lower two ends, and flange is fixed
It is wholely set with die trial main body in die trial main body upper end, flange has six screws along flange circumference spaced set, two
Individual bracelet support is fixed on die trial main body both sides, and bracelet is hinged on bracelet support.
3. test gap sealing method according to the agent on crack resistance of concrete water penetration described in claim 1, it is characterised in that: described fluid sealant
For water-repellent paint, the degree of depth of annular groove is 2.5-3.5mm.
4. test gap sealing method according to the agent on crack resistance of concrete water penetration described in claim 1, it is characterised in that: described fluid sealant
For glass cement, the degree of depth of annular groove is 4.5-5.5mm.
5. test gap sealing method according to the agent on crack resistance of concrete water penetration described in claim 1, it is characterised in that: described annular is recessed
The width of groove is 3-7cm.
6. test gap sealing method according to the agent on crack resistance of concrete water penetration described in claim 1, it is characterised in that: described pre-level pressure
Power is 0.5MPa.
7. test gap sealing method according to the agent on crack resistance of concrete water penetration described in claim 1, it is characterised in that: described fluid sealant
Import and fluid sealant outlet are positioned at the two ends of one radial direction of annular groove and are oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610233231.6A CN105891086A (en) | 2016-04-15 | 2016-04-15 | Gap sealing method for water penetration resistance test of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610233231.6A CN105891086A (en) | 2016-04-15 | 2016-04-15 | Gap sealing method for water penetration resistance test of concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105891086A true CN105891086A (en) | 2016-08-24 |
Family
ID=56703739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610233231.6A Pending CN105891086A (en) | 2016-04-15 | 2016-04-15 | Gap sealing method for water penetration resistance test of concrete |
Country Status (1)
| Country | Link |
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| CN (1) | CN105891086A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525707A (en) * | 2017-08-11 | 2017-12-29 | 中铁六局集团有限公司 | A kind of agent on crack resistance of concrete water penetration experiment pressurization stripper apparatus |
| CN108519320A (en) * | 2018-05-28 | 2018-09-11 | 中铁十七局集团第三工程有限公司 | The waterproof device for detecting performance of building surface |
| CN109540761A (en) * | 2018-11-08 | 2019-03-29 | 河海大学 | A kind of polyurea coating infiltration performance test device |
| CN111562208A (en) * | 2020-05-26 | 2020-08-21 | 中国人民解放军军事科学院国防工程研究院 | On-spot normal position impervious detection device |
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| CN202433284U (en) * | 2012-02-06 | 2012-09-12 | 新疆水利水电科学研究院 | Osmotic coefficient testing device for concrete |
| CN203422252U (en) * | 2013-06-25 | 2014-02-05 | 重庆市中检建筑工程质量检测有限公司 | Impervious instrument testing mold |
| CN203711777U (en) * | 2014-01-25 | 2014-07-16 | 严鹏 | Bottom pouring type pouring device |
| CN204188490U (en) * | 2014-09-11 | 2015-03-04 | 北京中水科海利工程技术有限公司 | A kind of roller compacted concrete interlayer anti-permeability performance proving installation |
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| JP4840812B2 (en) * | 2006-08-21 | 2011-12-21 | 国立大学法人 香川大学 | Permeability tester and method |
| CN101470107A (en) * | 2007-12-27 | 2009-07-01 | 河南理工大学 | Concrete body and test instrument and method for its permeation performance with other medium bonding surface |
| CN201716254U (en) * | 2010-07-14 | 2011-01-19 | 中原工学院 | Concrete permeability testing device |
| CN202433284U (en) * | 2012-02-06 | 2012-09-12 | 新疆水利水电科学研究院 | Osmotic coefficient testing device for concrete |
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| CN203711777U (en) * | 2014-01-25 | 2014-07-16 | 严鹏 | Bottom pouring type pouring device |
| CN204188490U (en) * | 2014-09-11 | 2015-03-04 | 北京中水科海利工程技术有限公司 | A kind of roller compacted concrete interlayer anti-permeability performance proving installation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525707A (en) * | 2017-08-11 | 2017-12-29 | 中铁六局集团有限公司 | A kind of agent on crack resistance of concrete water penetration experiment pressurization stripper apparatus |
| CN108519320A (en) * | 2018-05-28 | 2018-09-11 | 中铁十七局集团第三工程有限公司 | The waterproof device for detecting performance of building surface |
| CN109540761A (en) * | 2018-11-08 | 2019-03-29 | 河海大学 | A kind of polyurea coating infiltration performance test device |
| CN111562208A (en) * | 2020-05-26 | 2020-08-21 | 中国人民解放军军事科学院国防工程研究院 | On-spot normal position impervious detection device |
| CN111562208B (en) * | 2020-05-26 | 2023-10-20 | 中国人民解放军军事科学院国防工程研究院 | On-site in-situ anti-seepage detection device |
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Application publication date: 20160824 |