Composite Bitumen, often referred to as Modified Bitumen, is an advanced form of bitumen meticulously designed by blending base bitumen with performance-enhancing additives. These additives typically include polymers like Styrene-Butadiene-Styrene (SBS) or Atactic Polypropylene (APP), as well as fibers, chemical agents, or fillers, all of which contribute to achieving superior physical and chemical characteristics.

The modification process significantly boosts the performance of conventional bitumen, making it highly resilient in extreme climatic conditions, under heavy loads, and amidst demanding mechanical stresses. Noteworthy features of composite bitumen include excellent elasticity, high resistance to elevated temperatures, enhanced aging durability, and superior bonding properties. Its versatility makes it a preferred choice for high-performance applications such as road construction, roofing membranes, industrial flooring, and waterproofing systems.

Key Benefits

Exceptional Thermal Stability – Performs reliably across extreme temperature variations, making it ideal for both hot and cold climates.
Improved Flexibility and Elastic Recovery – Minimizes cracking and deformation, perfectly suited for surfaces experiencing heavy traffic and dynamic stress.
Extended Lifespan – Superior resistance to weathering, oxidation, and UV exposure reduces maintenance needs while boosting longevity.
Superior Adhesion and Waterproof Protection – Provides strong bonding with aggregates, concrete, and membranes, ensuring dependable water resistance.
Tailored Formulations – Adaptable to meet specific technical requirements across various industries and environmental conditions.

Application & Industries

- Advanced Road Construction and Paving Projects – Applied in the upper layers of highways, expressways, bridges, and urban roads that experience heavy traffic and demand superior performance.
- Waterproofing and Roofing Systems – Suitable for manufacturing torch-applied bitumen membranes, waterproof sheets, and insulation solutions for industrial and commercial structures.

Industrial Infrastructure – Utilized in flooring and foundational work, particularly in factories, chemical plants, and storage facilities where mechanical durability and chemical resistance are crucial.
Airport Runways and Ports – Designed to endure significant thermal stress and heavy load demands in airfield and marine infrastructure applications.

Technical Specification

Softening Point (°C)	85–120 (ASTM D36)
Penetration @25°C (0.1mm)	20–50 (ASTM D5)
Elastic Recovery (%)	≥ 60 (ASTM D6084)
Ductility @25°C (cm)	≥ 30 (ASTM D113)
Flash Point (COC, °C)	≥ 250 (ASTM D92)
Viscosity @135°C (cP)	1000–4000 (ASTM D4402)
Solubility in Trichloroethylene (%)	≥ 99 (ASTM D2042)
Specific Gravity @25°C	1.01–1.05 (ASTM D70)
Stability under Storage	Stable (Internal Method)

Standards & Certifications

Composite Bitumen complies with major international standards, ensuring optimal performance and safety:

ASTM D5, D36, D92, D113, D4402 – Key U.S. standards for penetration, softening point, flash point, ductility, and viscosity.
EN 14023 – European standard for polymer-modified bitumen used in road construction.
AASHTO M320 – Specifications for performance-graded (PG) asphalt binders in the U.S.
ISO 9001:2015 – Quality Management System Certification (applies to production process).
REACH Regulation Compliance – Ensures chemical safety for export to EU markets.
CE Marking (on request) – Required for products exported to European Union countries.
SGS / BV Certificate – Available upon buyer’s request for third-party inspection and quality control.

Packaging & Export Details

Available Packaging Types:
- 25–50 kg meltable polyethylene bags
- Kraft paper bags (customizable branding)
- 1 MT jumbo bags (Big Bags)
- Drums, Slabs, or Blocks (based on formulation)
- Bulk form or containerized cargo (on demand)
Export & Logistics Information:
- HS Code: 27150000
- Country of Origin: Iran
- Delivery Terms: EXW, FOB, CFR, CIF – flexible as per buyer’s location
- Inspection & QC: SGS, BV, or third-party pre-shipment inspection available
- Shipping Options: FCL / LCL by sea or truck (based on destination)