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GB 18173.4-2010: [GB/T 18173.4-2010] Polymer water-proof materials -- Part 4: Rubber gasket for shield-driven tunnel
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[GB/T 18173.4-2010] Polymer water-proof materials -- Part 4: Rubber gasket for shield-driven tunnel
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Basic data | Standard ID | GB 18173.4-2010 (GB18173.4-2010) | | Description (Translated English) | [GB/T 18173.4-2010] Polymer water-proof materials -- Part 4: Rubber gasket for shield-driven tunnel | | Sector / Industry | National Standard | | Classification of Chinese Standard | G47 | | Classification of International Standard | 83.140.99 | | Word Count Estimation | 13,110 | | Date of Issue | 2010-08-09 | | Date of Implementation | 2011-06-01 | | Quoted Standard | GB/T 528-1998; GB/T 531.1-2008; GB/T 2423.16-2008; GB/T 3512-2001; GB/T 3672.1-2002; GB/T 7759-1996; GB/T 18173.3 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 3, 2010 (No. 158 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Chinese standard relates to shield tunnel segment with a rubber gasket (hereinafter referred to as rubber gasket) classification, requirements, test methods, inspection rules and signs, packaging, transportation and storage and so on. This standard applies to the rubber as the main material, assembled shield tunnel segment waterproof rubber gasket. Mainly used in subways, highways, railways, water supply and drainage, power engineering and other joints waterproof shield tunnel. | GB 18173.4-2010: [GB/T 18173.4-2010] Polymer water-proof materials -- Part 4: Rubber gasket for shield-driven tunnel
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Polymer water-proof materials.Part 4. Rubber gasket for shield-driven tunnel
ICS 83.140.99
G47
National Standards of People's Republic of China
Polymer waterproof material
Part 4. shield tunnel segment rubber seal
Part 4. Rubbergasketforshield-driventunnel
Issued on. 2010-08-09
2011-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
4.1,4.2,4.3 this section (except hardness in Table 3), 7.3, 7.4 are mandatory, the rest are recommended.
GB 18173 "polymer waterproof material" is divided into the following four parts.
--- Part 1. a sheet;
--- Part 2. Sealing;
--- Part 3. water swelling rubber;
--- Part 4. shield tunnel segment rubber seal.
This is Part 4.
This section in Appendix A, Appendix B is an informative annex.
This part is proposed by the China Petroleum and Chemical Industry Association.
This part of the National Standardization Technical Committee rubber rubber products rubber sundries and Technical Committee (SAC/TC35/SC7) centralized.
This section is drafted. Northwest Rubber Plastic Research and Design Institute, Jiangyin Haida Rubber and Plastic Co., Ltd., Shanghai tunnel bridge special rubber plant,
Jiangsu Province Product Quality Supervision and Inspection Institute, Shanghai Zijiang Rubber Products Co., Ltd., Shanghai Pengpu rubber plant, rubber Shanghai Changning
Products Factory, Hengshui Baoli Engineering Rubber Co., Ltd., Changzhou Huaan Building Material Co., Ltd. Hengshui City Rubber Factory, Hengshui Junda Rubber
Ltd., Zhejiang Qinshan Rubber Engineering Co., Ltd., Shanghai Tunnel Engineering and Rail Transit Design and Research Institute.
The main drafters of this section. Yang all, Gong Jian, labor revival Coordination between Yao Yutang, Xiahong Fang, Cui Yun, Li Jing, Yao Meihua, to Zhao,
Zhang Yingjie, Guan Yuan students, Lu Ming.
Polymer waterproof material
Part 4. shield tunnel segment rubber seal
1 Scope
GB 18173 provisions of this part of the shield tunnel segment rubber seal (hereinafter referred to as the rubber gasket) classification, requirements, test
Test methods, inspection rules and signs, packaging, transportation and storage and so on.
This section applies to rubber as the main material, shield tunnel segments Assembled waterproof rubber seal. Mainly used for subway, public
Roads, railways, water supply and drainage, power engineering shield tunnel seam waterproof.
2 Normative references
The following documents contain provisions which, through reference in this section GB 18173, constitute provisions of this part. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
GB/T 528-1998 vulcanized rubber or thermoplastic rubber tensile stress strain properties (eqvISO 37.1994)
GB/T 531.1-2008 vulcanized rubber or thermoplastic rubber indentation hardness test methods - Part 1. Method Shore Hardness (Shore
Seoul hardness) (ISO 7619-1.2004, IDT)
GB/T 2423.16-2008 Environmental testing for electric and electronic products Part 2. Test methods - Test J and guidance. Mould growth
(IEC 60068-2-10.2005, IDT)
GB/T 3512-2001 vulcanized rubber or thermoplastic rubber hot air and heat accelerated aging test (eqvISO 188.1998)
GB/T 3672.1-2002 Rubber Products tolerance - Part 1. Dimensional tolerances (idtISO 3302-1.1996)
GB/T 7759-1996 vulcanized rubber, thermoplastic rubber at room temperature, high and low temperature compression set was measured (eqvISO 815.
1991)
GB/T 18173.3 polymer waterproof materials - Part 3 water swelling rubber
Category 3
Rubber gasket according to the functions are divided into three categories.
a) elastomeric gasket [including chloroprene rubber (CR) seals, EPDM rubber (EPDM) gasket];
b) water swelling rubber gasket;
c) water swelling rubber and elastic rubber compound seals.
4 Requirements
4.1 Structure type rubber gasket, size and tolerances shall comply with prescribed procedures approved by the drawings and technical documentation requirements. No Tolerance
When requested, the allowable deviation should be consistent with GB/T 3672.1-2002 in E2 grade requirements.
4.2 appearance quality
Rubber gasket appearance quality should meet the requirements in Table 1.
Table 1 Appearance quality
Defects name
Quality requirements
Face part of a non-face portion
bubble
0.50mm ~ 1.00mm diameter bubbles per meter is not allowed
Xu more than three
1.00mm ~ 2.00mm diameter bubbles per meter is not allowed
Xu more than four
Impurity
Area of 2mm2 ~ 4mm2 impurities allowed per meter super
Over three
An area of 4mm2 ~ 8mm2 impurities allowed per meter super
Over three
Joint defects
Not allowed to have cracks and "sponge" phenomenon. Height 1.00mm
~ 1.50mm projections not more than 2 per meter
Not allowed to have cracks and "sponge" phenomenon. Height 1.00mm
~ 1.50mm projections not more than 4 per meter
dent
The depth of not more than 0.50mm, the area of 3mm2 ~ 8mm2
Dent, not more than 2 per meter
The depth of not more than 1.00mm, the area of 5mm2 ~ 10mm2
Dent, not more than 4 per meter
The difference between the central bore hole surrounding the eccentric symmetrical parts should not exceed the thickness of 1mm
Face refers to the contact surface and a sealed tube sheet assembly seal between the gasket and the gasket groove pad contact surface.
4.3 Physical properties
4.3.1 elastomeric gasket physical properties of the finished product should be consistent with the provisions of Table 2. If the finished product does not have a cross-sectional structure of the slice sample preparation conditions, with
Standard test specimens vulcanized rubber.
Table 2 elastomeric gasket physical properties of the finished product
project
index
Neoprene EPDM
Hardness (Shore A)/50 to 60 degrees
Ⅰ type a Ⅱ type b
50 ~ 60 60 ~ 70
Hardness deviation/degree ± 5 ± 5 ± 5
Tensile strength/MPa ≥ 10.5 9.5 10
Elongation at break /% ≥ 350 350 330
Compression set/%
70 ℃ × 24 0-2h, 25% ≤ 30 25 25
23 ℃ × 72 0-2h, 25% ≤ 20 20 15
Hot air aging
70 ℃ × 96h
Hardness change/degree ≤ 8 6 6
Tensile strength decrease rate /% ≤ 20 15 15
Elongation at break reduced rate /% ≤ 30 30 30
Mildew rating of not less than two of not less than two of not less than two
a Ⅰ type is non-porous seal.
b Ⅱ type is perforated seal.
4.3.2 water swelling rubber gasket rubber physical properties shall conform to Table 3. When finished slicing test, tensile strength, breaking elongation
Long rates, repeated immersion test tensile strength, elongation at break performance indicators should reach 80% of the indicators specified in Table 3.
Table 3 water swelling rubber seal rubber physical properties
Project Specifications
Hardness (Shore A)/of 42 ± 10 45 ± 10
Tensile strength/MPa ≥ 3.5 3
Table 3 (Continued)
Project Specifications
Elongation at break /% ≥ 450 350
Volume expansion rate /% ≥ 250 400
Repeated immersion test
Tensile strength/MPa ≥ 3 2
Elongation at break /% ≥ 350 250
Volume expansion rate /% ≥ 250 300
Flexibility at low temperature (-20 ℃ × 2h) no crack no crack
4.3.3 composite elastic rubber gasket physical properties shall conform to Table 2, the water-swellable rubber physical properties should be consistent with Table 3
Provisions.
5 Test methods
5.1 Size with a vernier caliper (accuracy 0.02mm) and steel tape (accuracy of 1mm) measurement.
5.2 Appearance quality inspection conducted by visual and vernier caliper (accuracy 0.02mm).
5.3 hardness measurement conducted according to GB/T 531.1-2008 requirements.
5.4 tensile strength, elongation at break for determination according to GB/T 528-1998 requirements, and adopt the type Ⅱ dumbbell specimen.
5.5 Determination of compression set according to the provisions of GB/T 7759-1996 were finished and semi-finished rubber test are used to test type B
Sample.
5.6 Hot air aging test method according to GB/T 3512-2001 were prescribed.
5.7 Test mold according to the method GB/T 2423.16-2008 be prescribed.
5.8 Test Press repeatedly soaking method GB/T 18173.3 specified conduct.
5.9 cryogenic bending test method according to GB/T 18173.3 specified conduct.
5.10 volume expansion ratio test according to GB/T 18173.3 specified in Appendix A of the method.
5.11 Water pressure resistance test method in Appendix A.
5.12 compression stress test method in Appendix B.
6 Inspection rules
6.1 Batch and sampling
Product performance testing to the same species, the same specifications of the rubber gasket ring 300 as a group, randomly selected from each batch of ring size 3 feet
Inch, appearance quality inspection, inspection of samples from a random selection of a frame and then the physical properties of the test.
Performance testing of semi-finished plastic material. elastomeric gasket compound to 6000kg as a group of water-swellable rubber compound to 2000kg for the
Batch. Each batch of samples to extract enough physical performance test.
6.2 Inspection classification
6.2.1 factory inspection
Test items.
a) an elastic rubber gasket. size, appearance quality, hardness, tensile strength, elongation at break, compression set;
b) water swelling rubber gasket. size, appearance quality;
c) composite elastomeric gasket portion according to a), water swelling rubber part of the press b).
6.2.2 Type inspection
This section listed all the technical requirements for the type test project. Type test is usually carried out in the case when one of the following.
a) conversion of new products or old products to identify stereotypes trial production;
B) after the official production, such as structure, materials, technology has drastically changed, it may affect product performance;
c) Normal production, post-production on a regular basis or accumulated some once a year test;
d) Product Discontinuance more than six months after the recovery of production;
e) factory inspection results are quite different when the last type inspection;
f) contract;
g) the national quality supervision inspection or arbitration bodies during type inspection requirements.
6.2.3 Under normal production conditions, the finished elastomeric gasket hot air aging test inspected once every quarter, the annual inspection of a mold level
Times; elastomeric gasket rubber hardness, tensile strength, elongation at break, compression set performance test batches, each hot air aging
Quarterly inspection once; water swelling rubber gasket rubber hardness, tensile strength, elongation at break, according to the volume expansion ratio test batches,
Repeated immersion test test once every quarter, cold bending test test once a year.
6.3 determine the rules
6.3.1 size, appearance quality should be fully comply with the requirements, if one does not meet the requirements, did not respond to extract 100% product inspection.
6.3.2 Tables 2 and 3 should be listed in the performance of all meet the technical requirements. If non-conformities, shall also be taken double samples nonconformity
Head re-examination, re-examination result is still unsatisfactory, then the product is defective or substandard batch compound. For non-project grant check, the results of the re-examination
The time is now unqualified, should be replaced by batch testing.
7 signs, packaging, transportation and storage
7.1 on the box or overpack shall be marked.
a) the product name;
b) manufacturing units and address;
c) product standards;
d) product specifications, quantity;
e) trademark;
f) the date of manufacture;
g) precautions.
7.2 Product coil binding, coil should be neat, solid, with bags or cartons, water swelling rubber seal should be lined with plastic packaging.
Package included product certification, certification include. specifications, production date, standard number, inspection seal. If you have special packaging requirements, the
Supply and demand sides negotiated.
7.3 products during transportation, should avoid heavy compression and high stacking; avoid direct sunlight, rain and snow Baptist leaching; should not be possible for products
Corrosion caused by acids, alkalis, oils and organic solvents as well as sharp objects contactor.
7.4 The product should be stored in direct sunlight, temperature -15 ℃ ~ 35 ℃, relative humidity less than 95% of the ventilated warehouse.
Not allowed to stack too high or stress.
7.5 Subject to the conditions prescribed in this section 7.3, 7.4, from the date of production within one year, the performance should be consistent with the provisions of this section.
Appendix A
(Informative)
Hydraulic simulation test resistance
A.1 Scope
This method is suitable for shield tunnel segment waterproof rubber seal water pressure resistance performance simulation test pad, only verify the design of the product off
Waterproof surface structure meets the performance requirements.
Trench sized test simulation apparatus according to the present method of shield tunnel segments designed according to the design of the rubber sealing pad cross-sectional structure and
Test samples were prepared analog device size, the performance of the gasket samples shall comply with this part.
A.2 Principle
Using analog segments "T" shape, "a" water pressure resistance test apparatus shaped building seam, measuring the amount of displacement in the design of the gasket and the amount can be opened
Withstand pressure value.
A.3 test device
A.3.1 "T" shaped analog water pressure resistance test apparatus consists of a rectangular plate and two plates. Structure and shape of the mold in Figure A.1 Test
Shown ( "a" shape analog water pressure resistance test apparatus with reference to production), should ensure maximum 6MPa hydrostatic deformation test device does not occur.
a) before the setup poster
Figure A.1 "T" type analog resistance to hydrostatic testing device
b) a schematic diagram of the test apparatus dislocation c) rubber gasket dislocation schematic
Figure A.1 (CONTINUED)
Groove dimensions A.3.2 test device should be designed tunnel segments seal groove dimensions consistent, long side of the specimen within the frame size should be small
In 400mm, short side frame size not less than 200mm.
A.3.3 Analog joint open test apparatus using different thickness of shims, analog displacement amount of available bar bolt adjustment.
A.3.4 The test apparatus shall be placed stable and easy to operate.
A.3.5 The test apparatus shall be equipped with a hydraulic pump 6MPa above.
A.3.6 pressure measurement accuracy on the test apparatus is equipped with no less than 0.1MPa.
A.4 Sample Preparation
A.4.1 sectional shape and size of the sample should be consistent with the cross-sectional shape and size of the design.
A.4.2 sample size should match the block-shaped test device.
A.5 Test conditions
Unless otherwise specified, the specimen should be under (23 ± 2) ℃ parked less than 16h, the longest no more than three months, the test should be under (23 ± 2) ℃
get on.
A.6 Test Procedure
A.6.1 clear water, oil and other debris test device within the trench to keep dry and clean.
A.6.2 The sample in accordance with the design requirements and paste in the groove, after parking 24h, first assembled two rectangular plate, and then assembled plates. Start with the right angle
Board vertical joints begin, tighten the bolts evenly, so that "T" shaped opening amount and the amount of displacement of the seam reaches the set value.
A.6.3 vent valve was opened, the pressurized water is discharged to the rear to close the valve. Every time increments from 0 0.1MPa boost to the design requirements
Pressure value, each time boost, until the pressure is stable holding pressure of not less than 30min. Boost pressure to at least maintain the 24h value after the design requirements.
During the test in a long time because the bolt deformation and deformation state seal strain generated by the pads, allowing tests under slight pressure
drop. In the packing process to meet the design pressure value, the pressure should pay attention to changes, and to ensure the stability of the pressure by the appropriate pressure compensation.
A.6.4 water swelling rubber samples, in the process, such as boosting water leakage, stop the boost, the sample to be expanded to not leak water subsequent
Continued testing.
A.6.5 After each test is completed, the pressure should be relieved, relaxed exchange means of shims or adjust the amount of dislocation, in the same way for the next set of experiments.
A.7 Test record
Test records are available in tabular form, as shown in Table A.1.
Table A.1 Test record sheet
Laboratory temperature.
Time (year/month/day/hour/minute) opening amount/mm displacement amount/mm Pressure/MPa
A.8 Test report
The test report shall include the following.
a) Description of the test sample;
b) test device trench size, the maximum open amount, the maximum amount of dislocation;
c) test temperature;
d) the date of preparation of the sample;
e) date of the test;
f) test results.
Appendix B
(Informative)
Simulation Test Method for Compressive Stress
B.1 Scope
This method is suitable for shield tunnel segment waterproof rubber gasket compression stress test simulation performance, only verify the design of the product
Sectional structure meets the construction requirements.
Trench sized test simulation apparatus according to the present method of shield tunnel segments designed according to the design of the rubber gasket sectional structure and test
Simulation test specimen preparation device size, the performance of the gasket samples shall comply with this part.
B.2 Principle
This method is the use of simulation rubber jig with a groove prepared in advance in a sealed tube sheet groove pad assembly when the actual measuring tube sheet assembly
Compressive stress joints completely closed.
B.3 means
B.3.1 compression stress test device as shown in Figure B.1.
1 --- guide sleeve;
2 --- lower groove module;
3 --- rubber gasket;
Module 4 --- trench;
5 --- end face of the seal plate.
Figure B.1 compressive stress schematic simulation test device
B.3.2 Test apparatus groove dimensions should be consistent with the design of the tube sheet groove dimensions, trench length 200mm. The guide sleeve with the groove on the template
The mating surfaces should be smooth, coated lubricant test.
B.3.3 test compression stress testing machine equipped with stress or pressure sensor means.
Precision measuring instruments B.3.4 amount of compression is not less than 0.02mm, precision measuring instruments compressive stress of not less than 0.01kN.
B.4 Sample Preparation
B.4.1 sectional shape and size of the sample should be consistent with the design of the cross-sectional shape and size.
B.4.2 length of the sample is 200mm, length tolerance -1mm.
B.5 Test conditions
Unless otherwise specified, the sample should be the standard temperature (23 ± 2) ℃ parked at less than 16h, the longest no more than three months, the test should be standard
Temperature (23 ± 2) for the next ℃.
B.6 Test procedure
B.6.1 first sample is placed within the channel test device, up and down together into the guide sleeve (such as flat-panel test machine template can be fixed up and down,
We do not need the guide sleeve can be aligned directly after the upper and lower fixed pressure test).
B.6.2 to 50mm/min rate of compression specimen, close the gap until the compression 0mm, then relax at the same sample rate, pressure and so forth
Contraction and relaxation sample was repeated twice.
B.6.3 third official tests, stress-strain curve should be plotted, as shown in the example B.2.
Figure B.2 stress-strain curves example of FIG.
B.7 Test report
The test report should include the following elements.
a) Description of the test sample;
b) the groove cross-sectional dimensions of the test apparatus;
c) test temperature;
d) the date of preparation of the sample;
e) date of the test;
f) test results.
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