GB/T 37383-2019 in English
VALIDTerminology for asphalt mixture
- Issued on:2019-03-25
- Implemented on:2020-02-01
- File Format:PDF
- Delivery:Via email within 5 business days
$476.00
| Standard No: | GB/T 37383-2019 |
| Document status: | VALID |
| Title in English: | Terminology for asphalt mixture |
| Title in Chinese: | 沥青混合料专业名词术语 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2019-03-25 |
| Implemented on: | 2020-02-01 |
| ICS Classification: | 75.140-Waxes, bituminous materials and other petroleum products |
| Chinese Classification: | Q20-Road material |
| Professional Classification: | GB-National Standard |
| Related Keywords: | asphalt mixture terminology
asphalt mixture introduction standard framework mixture design volume design method high modulus mixture rubber asphalt rubber powder content ≥15 % mixture type sma coarse |
| Related Topics: | noun terms
patent name GBT37383 GB/T 37383-2019 |
《GB/T 37383-2019沥青混合料专业名词术语》由TC458（全国混凝土标准化技术委员会）归口，主管部门为住房和城乡建设部。
Introduction
Standard Framework and Development Background
This standard was proposed by the Ministry of Housing and Urban-Rural Development, under the jurisdiction of the National Technical Committee for Concrete Standardization, and jointly drafted by 7 units including Sujiaoke Group. As my country's first special standard for asphalt mixture terminology, it integrates the terminology definitions of 42 domestic and foreign technical specifications such as JTG, AASHTO, and BS EN, and establishes a complete terminology system.
Classification and Analysis of Core Terms
| Classification | Key Terms | Technical Points |
|---|---|---|
| Raw Materials | Hard Road Asphalt | Needle Penetration <25(0.1mm), Used for High Modulus Mixture |
| Rubber Asphalt | Rubber Powder Content ≥15%, High Temperature Reaction and Melting | |
| Machinery Sand | Mechanically Crushed Aggregate with Particle Size <2.36mm | |
| Mixture type | SMA | Coarse aggregate skeleton + asphalt mastic filling structure |
| OGFC | Anti-slip surface with a void ratio of 12-15% | |
| EME | High modulus mixture with a dynamic modulus ≥4000MPa |
Key parameters of mixture design
Volume design method needs to control four core indicators:
- Void ratio Va: 3-6% (dense gradation)
- Mineral aggregate void ratio VMA: ≥13%
- Asphalt saturation VFA: 65-75%
- Powder-rubber ratio: 0.6-1.2
Typical case: The Superpave design method uses a gyratory compactor (SGC) to form the surface, which is closer to the actual pavement compaction condition than the Marshall method.
Comparison of performance test methods
| Test type | Standard method | Evaluation index |
|---|---|---|
| High temperature performance | Rutting test (AASHTO T324) | Dynamic stability ≥800 times/mm |
| Low temperature performance | Bending test (-10℃) | Failure strain ≥2500με |
| Water stability | Freeze-thaw splitting test | TSR≥80% |
Implementation suggestions
1. Term application specifications: Pay attention to the differences between the American standard (asphalt) and the European standard (bitumen)
2. Terms of recycling technology: Distinguish between factory-mixed hot recycling (RAP heating) and in-situ cold recycling (foamed asphalt mixed at room temperature)
3. Test method selection: The French rutting test (30,000 rolling times) is recommended for heavy-load roads
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