GB/T 13477.13-2019 PDF English
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| GB/T 13477.13-2019 | English | 175 |
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Test Method for Building Sealants -- Part 13: Determination of Adhesion/cohesion Properties at Variable Temperatures
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| GB/T 13477.13-2002 | English | 399 |
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Test method for building sealants -- Part 13: Determination of adhesion/cohesion properties at variable temperatures
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GB/T 13477.13-2019: Test Method for Building Sealants -- Part 13: Determination of Adhesion/cohesion Properties at Variable Temperatures
---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/GBT13477.13-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.50
Q 24
Replacing GB/T 13477.13-2002
Test Method for Building Sealants - Part 13:
Determination of Adhesion/cohesion Properties at
Variable Temperatures
(ISO 9047:2001, Building Construction - Jointing Products - Determination of
Adhesion/cohesion Properties of Sealants at Variable Temperatures, MOD)
ISSUED ON: JUNE 4, 2019
IMPLEMENTED ON: MAY 1, 2020
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 Apparatuses and Materials ... 7
7 Preparation of Test Specimen ... 8
8 Processing of Test Specimen ... 8
9 Test Procedures ... 11
10 Test Report ... 12
Appendix A (informative) Structural Changes in Comparison with ISO
9047:2001 ... 13
Appendix B (informative) Technical Differences between this Part and ISO
9047:2001 and Reasons of the Differences ... 14
Foreword
GB/T 13477 Test Method for Building Sealants is divided into 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.
Test Method for Building Sealants - Part 13:
Determination of Adhesion/cohesion Properties at
Variable Temperatures
1 Scope
This Part of GB/T 13477 stipulates the terms and definitions, principle, standard test
conditions, test apparatuses and materials, specimen preparation, specimen
processing, test procedures and test report of the determination of adhesion/cohesion
properties of sealants for the purposes of architecture and civil engineering after
stretch-compression cycle at variable temperatures.
This Part is applicable to the determination of adhesion/cohesion properties of elastic
sealants for the purposes of architecture and civil engineering after repeated cooling
stretch - heating compression.
2 Normative References
The following documents are indispensable to the application of this document. In
terms of references with a specified date, only versions with a specified date are
applicable to this document. In terms of references without a specified date, the latest
version (including all the modifications) is applicable to this document.
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
Terms and definitions that are defined in GB/T 14682 are applicable to this document.
4 Principle
Bond sealant sample between the surface of two parallel substrates to make the test
specimen. After the test specimen goes through cooling stretch - heating compression
cycle under the stipulated conditions, examine the damage of the adhesion or cohesion
of the test specimen.
5 Standard Test Conditions
Standard test conditions are: temperature (23 ± 2) °C; relative humidity (50 ± 5) %.
6 Test Apparatuses and Materials
6.1 Test Apparatuses
6.1.1 Blast drying oven: temperature can be adjusted to (70 ± 2) °C.
6.1.2 Low-temperature test chamber: temperature can be adjusted to (-20 ± 2) °C; be
capable of containing test specimen under stretched state.
6.1.3 Container: used to hold distilled water; soak and process test specimen in
accordance with Method B (please refer to 8.2).
6.1.4 Testing machine: be capable of stretching and compressing test specimen at the
speed of (5.5 ± 0.7) mm/min.
6.1.5 Measuring tool: division value: 0.5 mm.
6.2 Materials
6.2.1 Adhesion/cohesion substrate: cement mortar board, aluminum plate or glass
plate, which is used to prepare test specimen, shall comply with the stipulations in
GB/T 13477.1. The shape and dimensions of substrate are shown in Figure 1 and
Figure 2. Or, substrates of other textures and dimensions may also be selected in
accordance with the negotiation among various parties. However, the
adhesion/cohesion dimension and area of embedded sealant sample shall be identical
to what is shown in Figure 1 and Figure 2. In terms of each test specimen, two
substrates which are made of the same materials shall be adopted.
6.2.2 Isolation pad: the surface shall be anti-sticking; it shall be used to prepare test
specimen with the sealant cross-section of 12 mm x 12 mm (as it is shown in Figure 1
and Figure 2).
6.2.3 Anti-stick material: anti-stick thin film or anti-stick paper, for example,
polyethylene (PE) thin film. Anti-stick material should be selected in accordance with
sealant manufacturer’s suggestions. Anti-stick material shall be used to prepare test
specimen.
6.2.4 Stretch positioning block: be capable of maintaining the stretched state at 12.5%,
20% or 25% elongation of test specimen (the width of positioning block is shown in
Table 1). Or, other elongations negotiated by various parties may also be selected.
6.2.5 Compression positioning block: be capable of maintaining the compressed state
at 12.5%, 20% or 25% compression ratio of test specimen (the width of positioning
block is shown in Table 1). Or, other compression ratios negotiated by various parties
may also be selected.
7 Preparation of Test Specimen
Before the test, sealant sample and substrate to be tested shall be placed under the
standard test conditions for at least 24 h.
Use absorbent gauze to eliminate floating ash on the surface of the cement mortar
board. Use solvents, for example, acetone, to rinse the aluminum plate and the glass
plate, then, dry them.
In accordance with sealant manufacturer’s instructions (for example: whether primer
has been used; the mixing program of multi-component sealant), prepare the test
specimen. In terms of the same type of substrate, prepare 3 test specimens.
As it is shown in Figure 1 and Figure 2, on anti-stick material, assemble two
adhesion/cohesion substrates and two isolation pads into a cavity. Then, embed the
sealant sample into the cavity. Thus, test specimen is made. During sample embedding,
pay attention to the following matters:
a) Avoid forming bubbles;
b) Extrude sample on the adhesion/cohesion surface of the substrate; the
adhesion/cohesion shall be dense;
c) Trim the surface of the sample, so that it is on the same level as the upper
surface of the substrate and the isolation pad.
Place the test specimen in side lay. Eliminate the anti-stick material as soon as possible,
so that the sample can be thoroughly cured or completely dried. During the
maintenance period, maintain the isolation pad in its original position.
8 Processing of Test Specimen
8.1 Method A
Place the previously prepared test specimen under the standard test conditions for 28
d.
8.2 Method B
Firstly, process the test specimen in accordance with Method A. Then, in accordance
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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