GB/T 44543-2024 in English
VALIDEpoxy adhesive for precast concrete segmental construction
- Issued on:2024-09-29
- Implemented on:2025-04-01
- File Format:PDF
- Delivery:Via email within 5 business days
$553.00
| Standard No: | GB/T 44543-2024 |
| Document status: | VALID |
| Title in English: | Epoxy adhesive for precast concrete segmental construction |
| Title in Chinese: | 预制混凝土节段拼装用环氧胶粘剂 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2024-09-29 |
| Implemented on: | 2025-04-01 |
| ICS Classification: | 83.180-Adhesives |
| Chinese Classification: | G39-Adhesives |
| Professional Classification: | GB-National Standard |
| Related Keywords: | precast concrete segmental construction introduction
epoxy adhesive precast concrete segment assembly precast concrete segment assembly technology initial common construction adhesive |
| Related Topics: | epoxy
gel dosage epoxy glue precast concrete gel dosage Gel quality industrial gel Gel quality Epoxy viscosity Epoxy viscosity Gel Analysis Gel preparation how to make gel |
《GB/T 44543-2024预制混凝土节段拼装用环氧胶粘剂》由TC185（全国胶粘剂标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
Introduction
1. Standard Overview
GB/T 44543-2024 "Epoxy Adhesives for Precast Concrete Segment Assembly" was released in 2024 to standardize the production, inspection and use of epoxy adhesives in projects such as bridges, wind power and underground structures. The standard combines the latest technological achievements at home and abroad and specifies material properties and construction requirements in detail.
2. Comparison of standard frameworks
| Standard dimensions | GB/T 44543-2024 | Differences from the old version of the standard | International integration |
|---|---|---|---|
| Classification mark | Added construction temperature range and anti-sagging performance requirements | Updated classification method and introduced dynamic indicators | Consistent with some technical parameters of European standards (EN 14997) |
| Technical requirements | Added fatigue resistance and long-term stress resistance performance indicators | Optimized environmental performance testing methods | Reference to relevant standards of the American Society for Testing and Materials (ANSI) |
| Test method | Introducing dynamic mechanical analysis (DMA) to test glass transition temperature | Adding rapid test wedge method (Appendix E) | Similar to some test methods of Japanese Industrial Standard (JIS K 7219) |
3. Analysis of standard formulation background and technological evolution
Background:With the popularization of precast concrete segment assembly technology, epoxy adhesives are increasingly used in bridges and underground projects. The introduction of this standard solves the shortcomings of existing materials in durability and construction performance, filling the domestic gap.
Technology evolution:From the initial common construction adhesive to the special epoxy system, the following key improvements have been made:
- Curing system optimization: from single component to multi-component
- Enhanced environmental protection requirements: introduction of low VOC and non-toxic formula
- Enhanced durability: new test methods such as moisture resistance and salt spray resistance
4. Implementation suggestions
Material selection:Environmentally friendly epoxy adhesives that meet the requirements of GB 30982 and GB 33372 should be used first to ensure their construction performance under different climatic conditions.
Construction condition control:Construction temperature and humidity should be strictly controlled. It is recommended to use temperature control equipment to monitor environmental parameters. For complex projects, the shrinkage test method in Appendix D can be referred to for preliminary evaluation.
Quality Control: Strengthen the quality inspection of incoming materials, especially the key indicators of epoxy resin system such as glass transition temperature and steel-to-concrete positive tensile bond strength (Appendix A). It is recommended to use a third-party testing agency to conduct type inspection.
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