Sri Lanka Standards
SLS Bitumen Standards
Learn about SLS bitumen standards in Sri Lanka, defining penetration grades, test codes, and performance methods for local road construction.
Sri Lanka’s Standard for Bitumen Quality
Sri Lanka Standards (SLS) Bitumen Standards
The Sri Lanka Standards (SLS) define bitumen properties suited to tropical climates and high-temperature environments.
These standards ensure reliable road performance, long service life, and safety in national infrastructure.
Standard Codes for Bitumen Properties
| Property | SLS Code | Description |
| Penetration | SLS 31 | Defines penetration grade categories |
| Softening Point | SLS 32 | Determines temperature sensitivity |
| Ductility | SLS 33 | Measures flexibility and elongation |
| Flash Point | SLS 34 | Ensures safety under heating conditions |
| Solubility | SLS 35 | Confirms bitumen purity |
Test Methods by Bitumen Type
- Penetration Bitumen: SLS 31-2000
- Cutback Bitumen: SLS 37
- Emulsion Bitumen: SLS 142
Each method outlines sample preparation, temperature ranges, and result interpretation to ensure consistent performance under Sri Lankan conditions.
Local Compliance and Quality Assurance
Bernet Bitumen ensures compliance with all SLS standards before export or supply to Sri Lanka-based projects.