CN101881721A - Device for measuring peel resistance strength of composite lining material - Google Patents
Device for measuring peel resistance strength of composite lining material Download PDFInfo
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- CN101881721A CN101881721A CN 201010214055 CN201010214055A CN101881721A CN 101881721 A CN101881721 A CN 101881721A CN 201010214055 CN201010214055 CN 201010214055 CN 201010214055 A CN201010214055 A CN 201010214055A CN 101881721 A CN101881721 A CN 101881721A
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- tube wall
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- concrete tube
- lining material
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Abstract
The invention discloses a device for measuring the peel resistance strength of a composite lining material, which comprises a concrete tube wall, a flexible composite lining, a pore canal, a water pressure applying device and a pressure measuring meter, wherein one end of the pore canal is close to a crack on the concrete tube wall, the other end of the pore canal is sequentially connected with the water pressure applying device and the pressure measuring meter, and the flexible composite lining is bonded on the concrete tube wall. The invention has simple structure and is convenient to operate, does not change the actual stress condition of the lining layer, the numerical value of the water pressure applied on the lining layer is directly displayed on the pressure measuring meter intuitively and clearly.
Description
Technical field
The present invention relates to a kind of measurement mechanism, more specifically relate to a kind of measurement mechanism of peel resistance strength of composite lining material, be applicable to and measure the compound lining that is bonded in culvert pipe inwall under the dangerously weak reseroirs dam, the peel strength under the effect of culvert pipe external water pressure.
Background technology
The small reservoir enormous amount that China's water conservancy industry is to be reinforced is gone in for water conservancy period in a big wag because most of reservoir was all built in five sixties of last century, because of historical reasons, and culvert pipe ubiquity variety of problems and defective under the dam.The reinforcing mode of at present culvert pipe under the dam generally being taked mainly contains, and modular repair is reinforced, excavated dam body and culvert pipe removed ways such as reconstruction and the reinforcing of cover lined steel pipe.But find in using that it is higher to excavate dam body dismounting reconstruction expenses, segment length during construction, dam body crosses the flood problem and gives prominence to, excavate the dam body of back backfill with originally between the dam body through settlement stability for many years, be not easy, cause new dam body crack because of non-uniform settling easily in conjunction with good.Cover lined steel pipe is reinforced, and sends into former culvert pipe smoothly in order to make steel pipe, and outer diameter of steel pipes must be less than former culvert pipe internal diameter 5～10cm even more, former caliber is dwindled too much, and in a single day when running into culvert pipe bending distortion or local faulting of slab ends, projection, very easily stuck, cause crag-fast awkward situation.In addition, grouting treatment must be carried out in the gap between steel pipe and the former culvert pipe, but that grouting quality is not easy is closely knit, when culvert pipe is longer more so.To bending or non-circular pipeline are arranged, steel pipe socket lining rule is at one's wit's end at all.In order to overcome above-mentioned drawback, in recent years, water conservancy system, is called non-excavation pipeline based technique for in-situ remediation that flexible pipe turns over the lining method or pull method into and introduces under the dam culvert pipe and reinforce in industry widespread uses such as oil, chemical industry, rock gas, municipal administrations a kind of.Its technological principle, be the ground opening that utilizes existing pipeline, do not excavate pipeline ground along the line, according to peeping the inner-walls of duct situation that detection system is understood in the pipeline, take suitable cleaning program, earlier that the dirt removal of inner-walls of duct is clean, then with the complex fiber hose of impregnated with adhesive, send in the old pipe, and flexible pipe is bonded on the old inner-walls of duct solidify under certain pressure, with old inner-walls of duct close adhesion, form closely knit firm internal lining pipe, finish reparation to old pipeline.
But in industries such as oil, chemical industry, rock gas, municipal administrations, repairing the purpose of culvert pipe, mainly is to prevent that the fluid media (medium) of carrying from revealing from the tube wall crack; Inner lining material mainly is subjected to internal fluid pressure, does not exist in the situation of being stripped under the pipe external pressure.At water conservancy industry, the period of opening a sluice gate and drawing out some water during irrigate every year is not long, majority is a free flow in the culvert pipe, the situation that pressure current occurs is few, at this moment, inner lining material is to prevent to manage the internal pressure water intrusion dam body that leaks through the tube wall crack, and the stress of inner lining material is identical with industries such as oil, chemical industry, rock gas, municipal administrations.In most cases, culvert pipe upstream closing gate, culvert pipe inside is anhydrous, and inner lining material mainly is to prevent to manage outer infiltration through rejected regions such as tube wall crack, holes the dam body fine grained that bankets to be brought in the pipe, causes the dam body seepage failure.At this moment, the stress of inner lining material is different with industries such as oil, chemical industry, rock gas, municipal administrations: be bonded in the inner liner of culvert pipe inwall under the dam, cross over the crack, in both sides, crack and concrete tube wall tight bond, bear the seepage pressure in the crack; If the seepage pressure head is excessive, inner liner will be peeled off from concrete tube wall along edge of crack, or peel off together with the local tube wall concrete in crack.For this reason, must measure the peel strength of inner liner under seepage pressure.
Because existing technical manual is not also stipulated measuring method or the device of inner liner in the peel strength of pipe under the external water pressure, general in the industry with reference to mean of access, measure and just draw cohesive strength or 90 ° of anti tear peel strengths between liner and the concrete.
Wherein, China Engineering Construction Standardization Association's standard " Carbon Fiber Sheet-Reinforced rehabilitating concrete structure technology rules " (CECS 146:2003) has stipulated just to draw the assay method of cohesive strength, resene binding material individual layer that this method is applicable to and carbon fiber plate is supporting or the mensuration of just drawing cohesive strength between composite coating and concrete.What it was measured is that sample and concrete are subjected to simultaneously in entire contact surface under the condition of pulling force, just draws cohesive strength along the adhesive surface normal direction.
90 ° of anti tear peel strengths are measured, (GB/T2790-1995) stipulate by national standard " peeling strength test method ", generally on 90 °, 180 ° peeling strength test machines, carry out, what measure is that flexible material is along become 90 ° or 180 ° of directions, the cohesive strength when being got off by tearing with the bonding substrates face.
Above-mentioned two kinds of assay methods all can not react the actual forced status of place, crack inner lining material, therefore also just can not accurately measure the actual peel strength of liner under the pipe external water pressure.
The present invention does not change the actual loading situation of culvert pipe inner wall defect place compound lining, directly measure the actual peel strength of liner under the effect of culvert pipe external water pressure, fundamentally solved the defective that existing measuring method can not be reacted liner actual loading situation.
Summary of the invention
The object of the present invention is to provide a kind of measurement mechanism of peel resistance strength of composite lining material, simple in structure, easy to operate, overcome existing just drawing in peel strength, the anti tear peel strength measuring method, the shortcoming that measured material stress condition and the inner lining material actual conditions that are bonded in the culvert pipe tube wall are not inconsistent, do not change the actual loading situation of culvert pipe inner wall defect place compound lining, measure the actual peel strength of liner under the effect of culvert pipe external water pressure, limit peel strength can directly be expressed to destroy the head value, and is simple and clear.
In order to achieve the above object, the present invention adopts following technical measures:
A kind of measurement mechanism of peel resistance strength of composite lining material, it comprises concrete tube wall, flexible compound liner, duct, the device that applies water pressure, pressure gauge.It is characterized in that: the other end in duct is near place, the crack on the concrete tube wall, an end in duct successively with apply the water pressure device, pressure gauge links to each other.Apply the device passing hole channel of water pressure, through the crack flexible compound liner that is bonded on the tube wall is applied water pressure, water pressure numerical value shows on pressure gauge.
The present invention compared with prior art has the following advantages and effect:
Simple in structure, easy to use, do not change the actual loading situation of inner liner, the water pressure numerical value that puts on the inner liner directly shows on pressure gauge, increase water pressure step by step, when distortion appears in inner liner, when occurring leaking near the grooving inner liner and concrete binding face, acting on head value on the inner liner this moment equals in pressure gauge head reading and the tensimeter discrepancy in elevation sum to inner liner, just the tolerant limit peel strength (representing with head) of inner liner is simple and clear.
Description of drawings
Fig. 1 is a kind of measurement mechanism structural representation of peel resistance strength of composite lining material
Wherein: the 1-concrete tube wall, 2-flexible compound liner, the 3-duct, 4-applies the device of water pressure, the 5-pressure gauge, the 6-dam body bankets, the 7-crack, 8-isolates joint-cutting, B-experiment with measuring sector width, 9-water source point or slurries pond
Embodiment
A kind of measurement mechanism of peel resistance strength of composite lining material, it comprises concrete tube wall 1, flexible compound liner 2, duct 3, the device 4 that applies water pressure, pressure gauge 5, it is characterized in that: an end in duct 3 is near the crack 7 on the concrete tube wall 1, the other end in duct 3 links to each other with the device 4 that applies water pressure, pressure gauge 5 successively, and flexible compound liner 2 is bonded on the concrete tube wall 1.
Apply the grouting pump of the device 4 of water pressure, be general commercial product for " irritating rule " regulation.
During measurement, duct 3 penetrates dam body and bankets 6, and an end in duct 3 is near the crack 7 on the concrete tube wall 1, and the other end links to each other with the device 4 that applies water pressure, pressure gauge 5 successively, and flexible compound liner 2 is bonded on the concrete tube wall 1.After device 4 pressurizations of water (or slurries) through applying water pressure from water source point or slurries pond 9,3 pairs of flexible compound liners 2 apply water pressure through the duct, and water pressure numerical value shows on pressure gauge 5.For observe concrete tube wall 1, whether flexible compound liner 2 destroyed, near close tube wall crack 7, concrete tube wall 1, flexible compound liner 2 cut wear liner 2 and form and isolate groovings 8, the zone that isolation grooving 8 surrounds is flexible compound liner 2 experiment with measuring districts, isolating grooving 8 generally forms with commercial electronic grooving machine, in order to reduce the disturbance of grooving machine to the test site, isolate grooving 8 leave the distance in crack 7 should be too not near, to be advisable greater than 20 times of thickness of inner lining, promptly the test site width B approximates 40 times of thickness of inner lining; In order to reduce influencing each other of test site and adjacent domain, the degree of depth of isolating grooving 8 should not be shallow excessively, wears flexible compound liner 2 to cut, and enter and reach being advisable more than 2 times of thickness of inner lining in the concrete tube wall 1, avoids injuring the culvert pipe reinforcing bar simultaneously; For ease of the deformation and failure process in viewing test district, the width of isolating grooving 8 is unsuitable narrow, to be advisable greater than inner liner thickness.When concrete tube wall 1 flexible compound liner 2 destroys, isolate in the grooving 8 and can observe drainage.After measurement finished, duct 3 was by the requirement backfill shutoff of " irritating rule ".Repair intact near ruined culvert pipe inwall isolating grooving 8 with the epoxy resin mortar or the third newborn mortar.
If because of the dam body seepage is difficult to apply water pressure to inner liner, but this moment, passing hole channel 3 was stipulated near the dam body grouting crack by " irritating rule ".If be not water in the duct 3 when measuring, but other slurries of grout, cement clay slip or other " irritating rule " permission then should be converted into the head value that acts on inner liner according to the unit weight of slurries.
Because at the crannied position of tube wall, flexible compound inner liner 2 is the easiest to be peeled off by external water pressure, so to select with the crack be that the center is suitable as the experiment with measuring district.
Claims (2)
1. the measurement mechanism of a peel resistance strength of composite lining material, it comprises that concrete tube wall (1), flexible compound liner (2), duct (3), the device (4) that applies water pressure, pressure gauge (5), isolation grooving (8) is characterized in that: an end of duct (3) is near the crack (7) on the concrete tube wall (1), the other end in duct (3) links to each other with the device that applies water pressure (4), pressure gauge (5) successively, and flexible compound liner (2) is bonded on the concrete tube wall (1).
2. the measurement mechanism of a kind of peel resistance strength of composite lining material according to claim 1, it is characterized in that: described isolation grooving (8) is located near the crack (7), cuts and wears concrete tube wall (1), flexible compound liner (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102140554A CN101881721B (en) | 2010-06-22 | 2010-06-22 | Device for measuring peel resistance strength of composite lining material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102140554A CN101881721B (en) | 2010-06-22 | 2010-06-22 | Device for measuring peel resistance strength of composite lining material |
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| CN101881721A true CN101881721A (en) | 2010-11-10 |
| CN101881721B CN101881721B (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102140554A Expired - Fee Related CN101881721B (en) | 2010-06-22 | 2010-06-22 | Device for measuring peel resistance strength of composite lining material |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680398A (en) * | 2012-06-01 | 2012-09-19 | 湖北省水利水电规划勘测设计院 | Indoor experiment device for testing anti-stripping strength of composite lining materials |
| CN103776736A (en) * | 2014-02-20 | 2014-05-07 | 许虹怡 | Lining viscosity measurement instrument |
| CN105650359A (en) * | 2016-03-18 | 2016-06-08 | 中国海洋石油总公司 | Systems used for enabling LNG pipelines to cross over dam and construction method of systems |
| CN106053339A (en) * | 2016-06-07 | 2016-10-26 | 西安向阳航天材料股份有限公司 | Estimation method of bonding strength of mechanical composite tubes |
| 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 |
| CN109520926A (en) * | 2018-12-29 | 2019-03-26 | 北京北燃环能工程科技有限公司 | The peel strength testing device and method of lining material for repairing pipelines and pipeline |
| CN114295486A (en) * | 2021-12-22 | 2022-04-08 | 中国长江三峡集团有限公司 | Flexible liner external pressure buckling test device and method |
| CN115015105A (en) * | 2022-06-02 | 2022-09-06 | 西南交通大学 | Method and device for testing bonding performance of waterproof material under hydrothermal coupling effect |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2767996Y (en) * | 2005-01-28 | 2006-03-29 | 徐地华 | Stripping strength tester |
| CN101074918A (en) * | 2007-06-25 | 2007-11-21 | 南京航空航天大学 | Method for testing high-combination performance coating strength based on pressure experimental device and its sample |
| CN101694452A (en) * | 2009-07-24 | 2010-04-14 | 扬中市江南砂布有限公司 | Method for testing peeling strength of coated abrasive tool |
-
2010
- 2010-06-22 CN CN2010102140554A patent/CN101881721B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2767996Y (en) * | 2005-01-28 | 2006-03-29 | 徐地华 | Stripping strength tester |
| CN101074918A (en) * | 2007-06-25 | 2007-11-21 | 南京航空航天大学 | Method for testing high-combination performance coating strength based on pressure experimental device and its sample |
| CN101694452A (en) * | 2009-07-24 | 2010-04-14 | 扬中市江南砂布有限公司 | Method for testing peeling strength of coated abrasive tool |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680398A (en) * | 2012-06-01 | 2012-09-19 | 湖北省水利水电规划勘测设计院 | Indoor experiment device for testing anti-stripping strength of composite lining materials |
| CN103776736A (en) * | 2014-02-20 | 2014-05-07 | 许虹怡 | Lining viscosity measurement instrument |
| CN103776736B (en) * | 2014-02-20 | 2015-11-18 | 湖州师范学院 | A kind of lining viscosity measuring instrument |
| CN105650359A (en) * | 2016-03-18 | 2016-06-08 | 中国海洋石油总公司 | Systems used for enabling LNG pipelines to cross over dam and construction method of systems |
| CN105650359B (en) * | 2016-03-18 | 2018-04-06 | 中国海洋石油总公司 | LNG pipelines cross dike system and its construction method |
| CN106053339A (en) * | 2016-06-07 | 2016-10-26 | 西安向阳航天材料股份有限公司 | Estimation method of bonding strength of mechanical composite tubes |
| CN106053339B (en) * | 2016-06-07 | 2019-02-05 | 西安向阳航天材料股份有限公司 | A kind of evaluation method of mechanical multiple tube bond strength |
| 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 |
| CN109520926A (en) * | 2018-12-29 | 2019-03-26 | 北京北燃环能工程科技有限公司 | The peel strength testing device and method of lining material for repairing pipelines and pipeline |
| CN114295486A (en) * | 2021-12-22 | 2022-04-08 | 中国长江三峡集团有限公司 | Flexible liner external pressure buckling test device and method |
| CN115015105A (en) * | 2022-06-02 | 2022-09-06 | 西南交通大学 | Method and device for testing bonding performance of waterproof material under hydrothermal coupling effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101881721B (en) | 2012-04-04 |
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