GB/T 13477.12-2018 PDF English
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| GB/T 13477.12-2018 | English | 170 |
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Test method for building sealants -- Part 12: Determination of adhesion/cohesion properties at constant temperature
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| GB/T 13477.12-2002 | English | 359 |
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Test method for building sealants -- Part 12: Determination of adhesion/cohesion properties at constant temperature
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GB/T 13477.12-2018: Test method for building sealants -- Part 12: Determination of adhesion/cohesion properties at constant temperature
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT13477.12-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.50
Q 24
Replacing GB/T 13477.12-2002
Test method for building sealants - Part 12: Determination
of adhesion/cohesion properties at constant temperature
(ISO 9046:2002, Building construction - Jointing products - Determination of
adhesion/cohesion properties of sealants at constant temperature, MOD)
ISSUED ON: DECEMBER 28, 2018
IMPLEMENTED ON: NOVEMBER 01, 2019
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 6
2 Normative references ... 6
3 Terms and definitions ... 6
4 Principle ... 6
5 Standard test conditions ... 7
6 Test instruments and materials ... 7
7 Preparation of specimens ... 7
8 Treatment of specimens ... 9
9 Test procedure ... 9
10 Test report ... 10
Annex A (informative) Structural changes in this Part compared with ISO 9046:2002
... 11
Annex B (informative) Technical differences between this Part and ISO 9046:2002 and
their reasons ... 12
Foreword
GB/T 13477 “Test method for building sealants” consists of the following parts:
- Part 1: Specifications for test substrates;
- Part 2: Determination of density;
- Part 3: Determination of extrudability of sealants using standardized apparatus;
- Part 4: Determination of extrudability of one-component sealants;
- Part 5: Determination for tack-free time;
- Part 6: Determination of flow;
- Part 7: Determination of low-temperature flexibility;
- Part 8: Determination of tensile properties;
- Part 9: Determination of adhesion/cohesion properties after immersion in water;
- Part 10: Determination of tensile properties at maintained extension;
- Part 11: Determination of tensile properties at maintained extension after
immersion in water;
- Part 12: Determination of adhesion/cohesion properties at constant temperature;
- Part 13: Determination of adhesion/cohesion properties at variable temperatures;
- Part 14: Determination of resistance to prolonged exposure to water;
- Part 15: Determination of adhesion/cohesion properties after exposure to heat and
artificial light through glass and to water;
- Part 16: Determination of resistance to compression;
- Part 17: Determination of elastic recovery;
- Part 18: Determination of adhesion-in-peel;
- Part 19: Determination of change in mass and volume;
- Part 20: Determination of staining.
This Part is Part 12 of GB/T 13477.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
Test method for building sealants - Part 12: Determination
of adhesion/cohesion properties at constant temperature
1 Scope
This Part of GB/T 13477 specifies the terms and definitions, principle, standard test
conditions, test instruments and materials, preparation of specimens, treatment of
specimens, test procedure, and test report for the determination of adhesion/cohesion
properties after tension-compression cycles at constant temperature of sealants used in
construction and civil engineering.
This Part applies to the determination of adhesion/cohesion properties after repeated
tension-compression of plastic sealants used in construction and civil engineering.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 13477.1 Test method for building sealants - Part 1: Specifications for test
substrates (GB/T 13477.1-2002, ISO 13640:1999, MOD)
GB/T 14682 Building sealing material vocabulary (GB/T 14682-2006, ISO
6927:1981, NEQ)
3 Terms and definitions
For the purpose of this document, the terms and definitions defined in GB/T 14682
apply.
4 Principle
Bond the sealant sample between the surfaces of two parallel substrates to make a
specimen. After subjecting the specimen to tension-compression cycles, inspect the
sealant specimen for adhesion or cohesion damage.
5 Standard test conditions
The standard test conditions are: temperature of (23 ± 2) ℃, relative humidity of (50 ±
5) %.
6 Test instruments and materials
6.1 Test instruments
6.1.1 Blast drying oven: the temperature can be adjusted to (70 ± 2) ℃.
6.1.2 Testing machine: capable of performing a tension-compression cycle at a speed
of (1 ± 0.2) mm/min.
6.1.3 Measuring tool: the graduation value is 0.5 mm.
6.2 Materials
6.2.1 Bonding substrate: The cement mortar board, aluminum plate or glass plate used
to prepare the specimen shall comply with the provisions of GB/T 13477.1. The shape
and dimension of the substrate are shown in Figures 1 and 2. Substrates of other
materials and dimensions can also be selected as agreed upon by all parties, but the
bonding dimension and area of the embedded sealant sample shall be the same with
those shown in Figures 1 and 2. For each specimen, two substrates of the same material
shall be used.
6.2.2 Isolation pad: The surface shall be anti-adhesive. It is used to prepare sealant
specimens with a cross-section of 12 mm × 12 mm (as shown in Figures 1 and 2).
6.2.3 Bond breaker: Anti-adhesive film or paper, such as polyethylene (PE) film, which
should be selected according to the recommendations of the sealant manufacturer. It is
used to prepare specimens.
7 Preparation of specimens
Before the test, the sealant sample to be tested and the test substrate shall be placed
under standard test conditions for at least 24 h.
Use degreasing gauze to remove dust from the surface of the cement mortar board. Use
solvents such as acetone to clean the aluminum plate and glass plate and dry them.
Prepare specimens according to the instructions (e.g., whether to use primer and the
mixing procedure of multi-component sealant) of the sealant manufacturer, and prepare
3 specimens of the same category of substrate.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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