GB/T 21491-2008Aramid fiber fabric for strengthening and restoring structures (English PDF)
结构加固修复用芳纶布
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
March 10, 2008
Implementation date
September 1, 2008
Scope
GB/T 21491-2008 is the English-translated version of 结构加固修复用芳纶布.
GB/T 21491-2008 is the Chinese standard "Aramid fiber fabric for strengthening and restoring structures". Its scope clause reads: This standard specifies the structural reinforcement and restoration aramid fabric specifications and labeling requirements, test methods, inspection rules, marking, packaging, transport and Storage and so on.
This standard applies to repair structural reinforcement with Kevlar cloth, but also for transportation, water, nuclear power and energy infrastructure construction With Kevlar reinforcement and restoration of the cloth. Its clauses include specifications and labeling; requirements.
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Document preview — GB/T 21491-2008
National Standard of the People's Republic of China
- ICS
- 83.120
- Classification
- Q 23
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 specifications and labeling
- 4 Requirements
1 Scope
This standard specifies the structural reinforcement and restoration aramid fabric specifications and labeling requirements, test methods, inspection rules, marking, packaging, transport and
Storage and so on.
This standard applies to repair structural reinforcement with Kevlar cloth, but also for transportation, water, nuclear power and energy infrastructure construction
With Kevlar reinforcement and restoration of the cloth.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
Plastic tensile properties GB/T 3354 oriented fiber reinforced
3 specifications and labeling
3.1 Specifications
Aramid fiber cloth fabric by mass per unit area divided 280g/m2,415g/m2,623g/m2,830g/m2 and other specifications, according to the width of the divided
300mm, 400mm, 500mm and other specifications.
3.2 mark
Kevlar fabric by product code, the mass per unit area, width and number of this standard are marked.
AFF-
Kevlar cloth code
Mass per unit area, g/m 2
GB/T 21491-
----
Width, mm
Example. mass per unit area of 280g/m2, a width of 500mm, according to the standard production of Kevlar fabric marked.
AFF-280-500GB/T 21491-2008.
4 Requirements
4.1 Appearance
4.1.1
should look uniform, neat, clean surface, can not be mixed with debris, dust and other pollution can not, must not have holes.
4.1.2
Kevlar cloth missing weft, woof off phenomenon and not more than 2 per 50m.
4.1.3
Each 50m Kevlar cloth off by no more than 10mm longer than the one, broken by not more than 10mm in length and not more than
2.
4.1.4
aramid fiber cloth arranged uniformly, without skew, wrinkling.
4.2 size deviation
Size deviation should be consistent with Table 1.
GB/T 39491-2020 | GB/T 36264-2018 | GB/T 36262-2018 | GB/T 43938.3-2026 | GB/T 21492-2019 | GB/T 21490-2008 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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