Product Overview
Styrelf® PMB is a part of the polymer modified bitumen range by ITPL. It is developed using elastomeric polymers and TotalEnergies’ advanced cross-linking technology. Designed for demanding road applications, it delivers enhanced storage stability, cohesiveness, elongation capacity, and resistance to ageing, helping pavements perform consistently under varying traffic and climatic conditions.
Compliant with IRC SP:53-2010, Styrelf® PMB offers a homogeneous binder with improved softening point and elastic recovery. This makes it suitable for infrastructure projects where long-term pavement performance is essential. Its advanced formulation supports stronger, more durable roads while maintaining consistent quality across applications.
Benefits
- Resistance to rutting at high pavement temperatures and fatigue under varying ambient conditions.
- Higher resistance at low temperatures (-10°C) against thermal cracking because of viscoelastic nature.
- Better stripping resistance and ITSR (Indirect Tensile Strength Ratios).
- Enhanced resistance against aging and oxidation.
- Proven record of longer life of pavement.
- Conserves natural resources and reduces pollution by extending the interval between overlays and periodic maintenance.
- Designed to perform reliably across India's diverse climatic conditions, with lower susceptibility to temperature variation.
- Suitable for use in national and state highways, city roads, flyovers, roundabouts etc. with improved overall mix performance.
Why Choose ITPL Styrelf® PMB?
01
Designed for Long-Term Pavement Performance
With improved softening point and elastic recovery, this polymer modified bitumen helps roads withstand heavy traffic, temperature variations, and repeated loading. The result is enhanced pavement durability and reduced maintenance requirements over time.
02
Backed by Proven Manufacturing Expertise
Recognised among trusted modified bitumen manufacturers in India, ITPL combines IndianOil’s refining excellence with TotalEnergies’ global formulation expertise to deliver Styrelf® PMB with consistent quality and dependable performance for modern road infrastructure.
Key Technical Parameters of Styrelf® PMB
As one of the leading modified bitumen manufacturers in India, ITPL ensures that every grade of polymer modified bitumen is produced to meet recognised Bureau of Indian Standards (BIS) requirements.
Available Grades
STYRELF® PMB 40
STYRELF® PMB 70
STYRELF® PMB 40 Super
| Property | Test Method | STYRELF PMB - 40 |
STYRELF PMB - 70 |
STYRELF PMB-40 Super |
|---|---|---|---|---|
|
Penetration at 25°C, 0.1mm, 100gm.5Sec |
IS 1203-1978 | 30-50 | 50-80 | 30-50 |
| Softening Point, (R & B), °C, Min | IS 1205-1978 | 60* | 55 | 70 |
| FRAASS breaking point, °C, Max | IS 9381-1979 | -12 | -16 | -12 |
| Flash Point, COC, °C, Min | IS 1209-1978 | 220 | 220 | 220 |
|
Elastic Recovery of half thread in ductilometer 15°C, %, Min |
IRC: SP: 53-2010 ANNEX-2 |
60 | 60 | 70 |
|
Complex Modulus (G*/Sin δ) as Min. 1.0 kPa at 10 rad/s, at a temperature °C. |
IRC: SP: 53-2010 ANNEX-1 |
76 | 70 | 76 |
|
Separation, difference in Softening point (R & B), °C, Max |
IRC SP 53-2010 ANNEX-3 |
3 | 3 | 3 |
| Viscosity at 150°C, Poises | 1206 Part 1 | 5-9 | 3-6 | 5-9 |
| Thin film oven tests on residue | ||||
| Loss in Mass, %, Max | IS 9382-1979 | 1.0 | 1.0 | 1.0 |
|
Increase in Softening point, °C, Max |
IS 1205-1978 | 5 | 6 | 5 |
|
Reduction in penetration of residue, at 25 °C, %, Max |
IS 1203-1978 | 35 | 35 | 35 |
|
Elastic Recovery of half thread in ductilometer 25 °C, %, Min OR |
IRC: SP: 53-2010 ANNEX-4 |
50 | 50 | 50 |
|
Complex Modulus (G*/Sin δ) as Min. 2.2 kPa at 10 rad/s, at a temperature °C |
IRC: SP: 53-2010 ANNEX-1 |
76 | 70 | 76 |
| Procedure | Recommended Temperature Range |
|---|---|
| Mixing / Coating with Aggregates | 170 - 185 °C |
| Laying of Mix | 150 - 170 °C |
| Beginning of Compaction | Over 140 °C |
| End of Compaction | 110 - 120 °C |
Product Certifications:Bureau of Indian Standards (BIS): CM/L-No-3269160
Specification: STYRELF® PMB meets specifications of IRC SP53:2010
Download Specification
The product brochure covers application guidance, technical parameters, and compliance details across the Styrelf® PMB range.
Frequently Asked Questions
Styrelf® PMB is a range of elastomerically modified polymer bitumen developed for high-performance road construction applications. It is manufactured using advanced elastomeric polymer technology that improves the strength, flexibility, and durability of pavements. Styrelf® PMB is commonly used in highways, flyovers, city roads, junctions, and heavy traffic areas to enhance overall pavement performance and longevity.
Styrelf® PMB offers several benefits, including better resistance to rutting, fatigue cracking, oxidation, and aging. It also provides improved adhesion with aggregates, enhanced elastic recovery, and superior performance under varying temperature conditions. These properties help reduce maintenance frequency and improve the lifespan of roads.
Styrelf® PMB improves pavement durability by increasing resistance to thermal cracking, rutting, and fatigue caused by heavy traffic loads and extreme weather conditions. Its viscoelastic properties provide better flexibility and cohesion, helping roads maintain structural integrity for a longer period and reducing the need for frequent repairs or overlays.
Unlike conventional bitumen, Styrelf® PMB is modified with elastomeric polymers using advanced cross-linking technology. This modification enhances storage stability, elastic recovery, elongation capacity, and resistance to aging. As a result, Styrelf® PMB delivers superior pavement performance, especially in areas exposed to high traffic and extreme climatic conditions.
The Styrelf® PMB product range includes multiple grades such as STYRELF® PMB 40, STYRELF® PMB 70, and STYRELF® PMB 40 Super.