CN101482468A - Test method for anti-permeability performance of fluid sealant and concrete bonding sample interface - Google Patents
Test method for anti-permeability performance of fluid sealant and concrete bonding sample interface Download PDFInfo
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- CN101482468A CN101482468A CNA2009100211001A CN200910021100A CN101482468A CN 101482468 A CN101482468 A CN 101482468A CN A2009100211001 A CNA2009100211001 A CN A2009100211001A CN 200910021100 A CN200910021100 A CN 200910021100A CN 101482468 A CN101482468 A CN 101482468A
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Abstract
The invention discloses a method for testing interface impervious strength of the sample bonded by sealant and concrete. The method comprises: reserving a seam cavity of a certain size in the middle of the concrete bonded sample, filling in sealant to bond the concrete and the sealant into an integral body to obtain a truncated cone shaped bonded impervious sample; placing the bonded impervious sample on the permeability instrument; increasing the water pressure of the impervious instrument at regular intervals for 0.1MPa each time from 0.1MPa until water seeps from the sample surface; and determining the previous water pressure as the impervious strength of the interface of concrete and sealant. The invention achieves the advantages of simple operation, unique and convenient using, need not adding other equipments, is convenient for popularization; it can detect the impervious strength of any composite material structure, has good instructiveness to engineering practice, is especially suitable for detecting the impervious strength of concrete construction seam and expansion joint such as simulated reservoir dam surface, channel expansion joint, aqueduct expansion joint and pipeline expansion joint, achieves great practical engineering value.
Description
Technical field
The invention belongs to building materials performance test field, the method for testing of particularly a kind of fluid sealant and concrete bonding sample interface anti-permeability performance.
Background technology
At present, the method for test concrete impermeability is very ripe, simultaneously, because of itself having higher impervious level, does not need to carry out the test of anti-permeability performance as the fluid sealant of antiseepage encapsulant.But when fluid sealant is used for concrete construction joint or expansion joint as joint filling or joint filler, the weakest position of the impervious often ability of bonding interface.Adhesive surface is to be composited by inorganic material and macromolecular material.At first, the kind of the voidage of concrete surface, space kenel, roughness and polymer sealant, proportioning, viscosity all influence cohesive strength; In addition, whether the cleanliness at interface, roughness, humidity, interface silane coupling agent are used, the kind of interface silane coupling agent etc. also influences cohesive strength; At last, temperature, the humidity during construction, whether wind is arranged, environmental baseline such as whether snow also influences cohesive strength.The height of cohesive strength directly influences the power of impervious ability, and the impervious ability of the adhesive surface that cohesive strength is high is strong, and the impervious ability of the adhesive surface that cohesive strength is low is low.For hydraulic engineering, the quality of joint treatment has directly influenced construction quality.Handling bad seam becomes the passage of infiltration, has destroyed xoncrete structure or engineering foundation position directly or indirectly, yielding of foundation occurs, engineering weight is produced to descend or faulting of slab ends, finally destroy whole engineering, caused enormous economic loss, produced abominable social influence.Therefore, develop real being necessary of anti-permeability performance method of testing of a kind of fluid sealant and concrete interface.
Summary of the invention
The objective of the invention is to, a kind of fluid sealant and concrete bonding sample interface anti-permeability performance method of testing are provided.
In order to realize above-mentioned task, the present invention takes following technical solution:
The method of testing of a kind of fluid sealant and concrete bonding sample interface anti-permeability performance, its feature exists
In, comprise the following steps:
1) the impervious sample of at first preparation bonding, this impervious sample that bonds is round table-like, make by concrete and encapsulant, encapsulant is positioned at the centre of encapsulant, encapsulant and concrete tight bond, form an integral body, smear impervious barrier around the bottom of impervious sample concrete part and the outside;
2) concrete impervious sample is placed in the overcoat punching block, be fixed in by rubber washer on the water pressure chamber of Anti-leakage instrument, make between the water pressure chamber of concrete impervious sample and Anti-leakage instrument waterproofly, this water pressure chamber is communicated with the water inlet of Anti-leakage instrument one end;
3) water inlet from Anti-leakage instrument applies hydraulic pressure, water pressure is from 0.1MPa, strengthen step by step with the interval of 0.1MPa at regular intervals, till the impervious specimen surface water outlet of bonding, the previous stage water pressure is the anti-permeability strength at concrete impervious sample and encapsulant interface.
Concrete in the impervious sample of the present invention preparation can model engineering reality any kind, the concrete of strength grade arbitrarily.This method can be tested the interface anti-permeability performance of bonding sample, simple to operate, easy to use, need not to increase new equipment, be convenient to promote, can detect the anti-permeability performance of any composite structure, concrete engineering practice is had very strong directiveness, especially simulate Concrete Construction seam and expansion joint anti-permeability performances such as reservoir dam facing, channel expansion joint, aqueduct expansion joints, pipeline expansion joint, have bigger engineering significance.
Description of drawings
Fig. 1 is the test synoptic diagram of fluid sealant and concrete bonding sample interface anti-permeability performance.
The present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment
Referring to Fig. 1, according to technical scheme of the present invention, the method for testing of fluid sealant and concrete bonding sample interface anti-permeability performance comprises the following steps:
1, the impervious sample of at first preparation bonding, this concrete impervious sample is round table-like, its integral body is that the bottom is big, the top is little, made by concrete 3 and fluid sealant 1, fluid sealant 1 is positioned at the centre of concrete 3, and fully by concrete 3 shoe that wraps, form an integral body with concrete 3, smear impervious barrier around the impervious sample concrete part bottom and the outside;
2, the impervious sample that will bond places in the overcoat punching block 2, be fixed on the water pressure chamber 7 of Anti-leakage instrument 6 by rubber washer 4 usefulness fastening bolts 5, waterproof between the water pressure chamber 7 of feasible impervious sample of bonding and Anti-leakage instrument 6, this water pressure chamber 7 is communicated with the water inlet 8 of Anti-leakage instrument 6 one ends;
3, the water inlet 8 from Anti-leakage instrument 6 applies hydraulic pressure, water pressure at regular intervals, strengthens with the interval of 0.1MPa step by step from 0.1MPa, till the impervious specimen surface water outlet of bonding, the previous stage water pressure is the anti-permeability strength at concrete and encapsulant interface.
Above-mentioned encapsulant can be polyurethane sealant, the polysulfide sealant of liquid state or paste, wherein any one of the fluid sealant that acrylate construction sealant, silicone building sealant, fly ash synthesized channel joint impervious material and other are used for concrete binding.
Above-mentioned polyurethane sealant (cream), polysulfide sealant (cream), acrylate construction sealant should meet the technical standard requirement of regulation among JC/T482-2003 " polyurethane sealant ", JC/T483-2003 " poly-sulphur building sealant ", JC/T484-2006 " acrylate building sealant ", the GB/T14683-2003 " silicone building sealant " respectively
Fly ash synthesized channel joint impervious material is for obtaining a kind of material of national inventing patent, the patent No.: ZL200310118992.X, its performance satisfies every technical standard requirement among the JC/T482-2003 " polyurethane sealant ", satisfies every technical standard requirement among the JC/T881-2001 " concrete construction seam fluid sealant " simultaneously.
Concrete 3 can be smeared end agent with the bonding interface of fluid sealant, also can not deal with, and is as the criterion with model engineering actual state and concrete test objective.
The concrete of bonding sample can model engineering reality any kind, the concrete of strength grade arbitrarily.
The concrete base of concrete impervious sample and the outside all need to smear impervious barrier.Impervious barrier can be whiteruss or butter cement mix etc., guarantees that fluid sealant and concrete binding interface are unique passages of press water.
This method can also extend to the test of fluid sealant and adhesive properties such as mortar, fluid sealant and solidified earth.
The concrete preparation method of concrete impervious sample is: with concrete mix and stir material pack into can the free demoulding impervious die trial in, hard things such as the plank of the middle part insertion and the expansion joint size equal wide of staying or steel plate, treat carefully plank or steel plate to be taken out after the concrete final set, form and measure-alike seam chamber, expansion joint, concrete sample is placed on 20 ± 2 ℃, maintenance demoulding after 24 hours in the environment of relative humidity more than 95%, be placed on 20 ± 2 ℃ again, maintenance reaches concrete standard intensity in the environment of relative humidity more than 95% after 27 days.In the seam chamber of being stayed in the middle part of the fluid sealant penetration concrete, make concrete and fluid sealant become a bonding sample integral body, make be of a size of with Anti-leakage instrument on the concrete impervious sample of circular platform type that is complementary of water pressure chamber size, be placed on 20 ± 2 ℃, maintenance was all evenly smeared impervious barrier with the concrete base and the limit wall of sample after 28 days in the environment of relative humidity 65 ± 5%, impervious barrier can be whiteruss or butter cement mix etc., the interface of concrete and fluid sealant is become uniquely under high hydraulic action go out water route.
Claims (4)
1, the method for testing of a kind of fluid sealant and concrete bonding sample interface anti-permeability performance is characterized in that, comprises the following steps:
1) the impervious sample of at first preparation bonding, this impervious sample that bonds is round table-like, make by concrete and encapsulant, encapsulant is positioned at concrete centre, encapsulant and concrete tight bond, form an integral body, smear impervious barrier around the bottom of the impervious sample concrete part that bonds and the outside;
2) the impervious sample that will bond places in the overcoat punching block, is fixed in by rubber washer on the water pressure chamber of Anti-leakage instrument, makes between the water pressure chamber of bonding sample and Anti-leakage instrument waterproofly, and this water pressure chamber is communicated with the water inlet of Anti-leakage instrument one end;
3) water inlet from Anti-leakage instrument applies hydraulic pressure, water pressure is from 0.1MPa, strengthen step by step with the interval of 0.1MPa at regular intervals, till the impervious specimen surface water outlet of bonding, the previous stage water pressure is the anti-permeability strength at concrete impervious sample and encapsulant interface.
2, the method for claim 1, it is characterized in that, described encapsulant be the polyurethane sealant, polysulfide sealant, acrylate construction sealant, silicone building sealant, fly ash synthesized channel joint impervious material of liquid state or paste and the conventional fluid sealant that is used for concrete binding wherein any.
3, method as claimed in claim 1 or 2 is characterized in that, described impervious barrier is whiteruss or butter cement mix, to guarantee that encapsulant and concrete binding interface are unique passages of press water.
4, the method for claim 1 is characterized in that, the impervious sample of described bonding prepares by the following method:
1) concrete is mixed and stirred material pack into can the free demoulding impervious die trial in, plank or steel plate or other the hard things with the expansion joint size equal wide of staying inserted at the middle part, treat after the concrete final set carefully plank or steel plate or other hard things are taken out, form and measure-alike seam chamber, expansion joint, concrete sample is placed on 20 ± 2 ℃, maintenance demoulding after 24 hours in the environment of relative humidity more than 95%, be placed on 20 ± 2 ℃ again, maintenance reaches concrete standard intensity in the environment of relative humidity more than 95% after 27 days;
2) in the seam chamber that encapsulant penetration concrete middle part is stayed, make concrete and encapsulant become a bonding sample integral body, make be of a size of with Anti-leakage instrument on the concrete impervious sample of circular platform type that is complementary of water pressure chamber size, be placed on 20 ± 2 ℃, maintenance was evenly smeared impervious barrier with the bottom and the limit wall of impervious sample concrete part after 28 days in the environment of relative humidity 65 ± 5%.
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| CN2009100211001A CN101482468B (en) | 2009-02-11 | 2009-02-11 | Test method for anti-permeability performance of fluid sealant and concrete bonding sample interface |
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| CN2009100211001A CN101482468B (en) | 2009-02-11 | 2009-02-11 | Test method for anti-permeability performance of fluid sealant and concrete bonding sample interface |
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| CN101482468B CN101482468B (en) | 2011-02-09 |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482470B (en) * | 2009-02-13 | 2010-12-08 | 西北农林科技大学 | Test method for anti-permeability performance of fluid sealant and substrate bonding sample interface |
| CN101788451B (en) * | 2010-02-09 | 2011-06-01 | 浙江树人大学 | Silt anti-permeability strength measuring equipment and method |
| CN102183415A (en) * | 2011-03-23 | 2011-09-14 | 中国特种设备检测研究院 | Small sample hydraulic burst test method and device for material property test |
| CN102507298A (en) * | 2011-12-02 | 2012-06-20 | 大连理工大学 | Method for sealing concrete anti-permeating test piece |
| CN102608014A (en) * | 2009-10-09 | 2012-07-25 | 威海建设集团股份有限公司 | Method for testing permeability resistance of concrete |
| CN103234885A (en) * | 2013-04-08 | 2013-08-07 | 天津虹炎科技有限公司 | Determination method for osmotic coefficient of plastic cut-off wall |
| CN104865127A (en) * | 2015-04-07 | 2015-08-26 | 昆明理工大学 | Testing apparatus and detection method for welding strength of plastic sewer inspection pit |
| CN105181554A (en) * | 2015-09-18 | 2015-12-23 | 中国矿业大学(北京) | Waterproof test method for horizontal joint applying grouting layer |
| CN105181548A (en) * | 2015-08-19 | 2015-12-23 | 新疆农业大学 | Sealing material for concrete impermeability tests and test method thereof |
| CN105928755A (en) * | 2016-04-20 | 2016-09-07 | 上海建工材料工程有限公司 | Sealing method for impermeability test of concrete |
| CN107192650A (en) * | 2017-04-14 | 2017-09-22 | 广西交通科学研究院有限公司 | Seal with wax the method for taking undisturbed soil permeability test soil sample |
| CN107643244A (en) * | 2017-11-02 | 2018-01-30 | 四川农业大学 | A kind of concrete impermeability test device |
| CN108106992A (en) * | 2017-12-19 | 2018-06-01 | 中建材中岩科技有限公司 | Test about Bond Strength method under the conditions of the infiltration of coating material pressure |
| CN109425568A (en) * | 2017-09-01 | 2019-03-05 | 上海汽车集团股份有限公司 | A kind of calculation method, device and electronic equipment being glued boundary strength |
| CN109827886A (en) * | 2019-03-18 | 2019-05-31 | 招商局重庆交通科研设计院有限公司 | The impervious experimental method of cement concrete joint sealing material |
| CN112255163A (en) * | 2020-11-14 | 2021-01-22 | 衡阳市银利实业有限公司 | Concrete impermeability test equipment |
| CN113916739A (en) * | 2021-08-24 | 2022-01-11 | 河海大学 | Soil-concrete contact seepage test device and method considering contact surface shearing |
-
2009
- 2009-02-11 CN CN2009100211001A patent/CN101482468B/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482470B (en) * | 2009-02-13 | 2010-12-08 | 西北农林科技大学 | Test method for anti-permeability performance of fluid sealant and substrate bonding sample interface |
| CN102608014B (en) * | 2009-10-09 | 2015-04-08 | 威海建设集团股份有限公司 | Method for testing permeability resistance of concrete |
| CN102608014A (en) * | 2009-10-09 | 2012-07-25 | 威海建设集团股份有限公司 | Method for testing permeability resistance of concrete |
| CN101788451B (en) * | 2010-02-09 | 2011-06-01 | 浙江树人大学 | Silt anti-permeability strength measuring equipment and method |
| CN102183415A (en) * | 2011-03-23 | 2011-09-14 | 中国特种设备检测研究院 | Small sample hydraulic burst test method and device for material property test |
| CN102507298A (en) * | 2011-12-02 | 2012-06-20 | 大连理工大学 | Method for sealing concrete anti-permeating test piece |
| CN103234885B (en) * | 2013-04-08 | 2016-03-16 | 天津虹炎科技有限公司 | A kind of determination method for osmotic coefficient of plastic cut-off wall |
| CN103234885A (en) * | 2013-04-08 | 2013-08-07 | 天津虹炎科技有限公司 | Determination method for osmotic coefficient of plastic cut-off wall |
| CN104865127A (en) * | 2015-04-07 | 2015-08-26 | 昆明理工大学 | Testing apparatus and detection method for welding strength of plastic sewer inspection pit |
| CN105181548A (en) * | 2015-08-19 | 2015-12-23 | 新疆农业大学 | Sealing material for concrete impermeability tests and test method thereof |
| CN105181554A (en) * | 2015-09-18 | 2015-12-23 | 中国矿业大学(北京) | Waterproof test method for horizontal joint applying grouting layer |
| CN105928755A (en) * | 2016-04-20 | 2016-09-07 | 上海建工材料工程有限公司 | Sealing method for impermeability test of concrete |
| CN107192650A (en) * | 2017-04-14 | 2017-09-22 | 广西交通科学研究院有限公司 | Seal with wax the method for taking undisturbed soil permeability test soil sample |
| CN107192650B (en) * | 2017-04-14 | 2020-12-08 | 广西交通科学研究院有限公司 | Method for taking undisturbed soil permeability test soil sample by wax sealing |
| CN109425568B (en) * | 2017-09-01 | 2020-11-13 | 上海汽车集团股份有限公司 | Method and device for calculating adhesive interface strength and electronic equipment |
| CN109425568A (en) * | 2017-09-01 | 2019-03-05 | 上海汽车集团股份有限公司 | A kind of calculation method, device and electronic equipment being glued boundary strength |
| CN107643244A (en) * | 2017-11-02 | 2018-01-30 | 四川农业大学 | A kind of concrete impermeability test device |
| CN108106992A (en) * | 2017-12-19 | 2018-06-01 | 中建材中岩科技有限公司 | Test about Bond Strength method under the conditions of the infiltration of coating material pressure |
| CN109827886A (en) * | 2019-03-18 | 2019-05-31 | 招商局重庆交通科研设计院有限公司 | The impervious experimental method of cement concrete joint sealing material |
| CN112255163A (en) * | 2020-11-14 | 2021-01-22 | 衡阳市银利实业有限公司 | Concrete impermeability test equipment |
| CN113916739A (en) * | 2021-08-24 | 2022-01-11 | 河海大学 | Soil-concrete contact seepage test device and method considering contact surface shearing |
| CN113916739B (en) * | 2021-08-24 | 2023-02-14 | 河海大学 | Soil-concrete contact seepage test device and method considering contact surface shearing |
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| CN101482468B (en) | 2011-02-09 |
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