JG/T 577-2022 in English
VALIDFlame separation strip for external thermal insulation
- Issued on:2022-02-11
- Implemented on:2022-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$175.00
| Standard No: | JG/T 577-2022 |
| Document status: | VALID |
| Title in English: | Flame separation strip for external thermal insulation |
| Title in Chinese: | 外墙外保温用防火分隔条 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2022-02-11 |
| Implemented on: | 2022-05-01 |
| Professional Classification: | JG-Building |
| Related Keywords: | external thermal insulation introduction analysis
test methods thermal conductivity flame separation strip standard technical indicators required combustion performance test system |
| Related Topics: | exterior wall
jg/t second generation firewall outside incubator fire protection External wall insulation Integrated thermal insulation exterior wall panels Firewall Technology Rating |
本标准规定了外墙外保温用防火分隔条的术语和定义、要求、试验方法、检验规则、标志、包装、运输和贮存。
本标准适用于建筑外墙外保温系统防为分仓用分隔条。
Introduction
Analysis of the core content of the standard
| Technical indicators | Required values | Test methods |
|---|---|---|
| Thermal conductivity(25℃) | ≤0.070W/(m·K) | GB/T 10294/10295 |
| Flexural strength | ≥200kPa | GB/T 5486 |
| Combustion performance | Grade A (A1/A2) | GB 8624 |
Key technical innovations
For the first time, the standard clearly defines expanded vitrified microspheres as the core material, and its volume water absorption ≤20% and drying shrinkage ≤1.0% index requirements solve the problem of traditional materials being easily deformed by water absorption. The product's applicability in severe cold regions was verified through 15 freeze-thaw cycle testing.
Suggestions for the implementation of the standard
- The test report of softening coefficient ≥ 0.5 should be checked during procurement
- Pre-installation requires curing for 48 hours at 23±2℃
- Special-shaped specifications require confirmation of processing technology with the manufacturer in advance
Technology evolution analysis
Compared with the JG/T 536-2017 standard, the new regulation has the following major improvements:
- Added freeze resistance indicator (15 freeze-thaw cycles)
- Refine the dimensional deviation grade (thickness tolerance ±2mm)
- Improve the combustion performance test system
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