JT/T 533-2020 in English
VALIDFiber for asphalt pavements
- Issued on:2020-04-28
- Implemented on:2020-07-01
- File Format:PDF
- Delivery:Via email within 5 business days
$592.00
| Standard No: | JT/T 533-2020 |
| Document status: | VALID |
| Title in English: | Fiber for asphalt pavements |
| Title in Chinese: | 沥青路面用纤维 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2020-04-28 |
| Implemented on: | 2020-07-01 |
| Superseding: |
JT/T 533-2004 Plant fibers used in asphalt pavements
|
| Professional Classification: | JT-Transport |
| Related Keywords: | edition fiber typewood fiber
mineral fiber requirement≥2.600g/cm³ polypropylene fiber needs mineral fiber polymer fiber wood fiber |
| Related Topics: | Fiber Statistics
asphalt surface fiber picture asphalt road carbon fiber spinnable pitch Carbon fiber spinnable pitch quality Fiber asphalt regulations flocculent mineral fiber |
本标准规定了沥青路面用纤维的产品分类和标记、技术要求和试验方法、检验规则，以及标志、包装、运输和储存等要求。
本标准适用于沥青路面用纤维的生产、检验和使用。
Introduction
Standard Framework and Technological Evolution
This standard replaces JT/T 533-2004, adds the classification of mineral fibers and polymer fibers, and expands 21 test methods. The main technical changes include:
| Dimensions | 2004 edition | 2020 edition |
|---|---|---|
| Fiber type | Wood fiber only | 3 major categories and 12 minor categories |
| Test method | 7 items | 28 items |
| Technical indicators | 6 items | 23 items |
Product classification and labeling system
The labeling system of material code + shape code + specification is adopted:
- Wood fiber: CF-XZ (floc)/CF-LZ (granular)
- Mineral fiber: MF-XZ (floc)/MF-SZ (bundle)
- Polymer fiber: PET-DS-12/10 (polyester monofilament)
Key performance index comparison
| Fiber type | Ash content (%) | Breaking strength (MPa) | Heat resistance (210℃) |
|---|---|---|---|
| Flocculated wood fiber | 13-23 | - | ≤5% loss |
| Bundled mineral fiber | - | ≥1000 | ≥85% retention rate |
| Polyester fiber | - | ≥450 | Melting point≥240℃ |
Innovative test methods
Fiber density determination
Newly added liquid displacement method (Appendix I) and specific gravity bottle method (Appendix J) dual-track system:
- Mineral fiber requirement≥2.600g/cm³
- Polypropylene fiber needs to be controlled at0.910±0.040g/cm³
Granular fiber evaluation
Establish a new system of granulating agent content (Appendix M) and loose density (Appendix N):
- Particle diameter deviation ±1mm
- Screening increase after abrasion ≤11%
Implementation suggestions
- Fiber image analyzer should be used for length/diameter measurement (Appendix H)
- Polymer fiber acceptance requires additional curled fiber content detection (Appendix U)
- Mineral fibers should be verified for high temperature resistance and abrasion resistance (Appendix P)
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