Cutback Bitumen RC‑250 – General Description │ Iran Bitumen Supply │ IBITMCO
Cutback Bitumen RC‑250 is a rapid‑curing cutback asphalt produced by blending high‑quality penetration‑grade bitumen with high‑volatility petroleum solvents, primarily gasoline. This formulation significantly reduces the viscosity of the bitumen, allowing it to be applied easily at lower temperatures without heating. Once applied, the solvent evaporates rapidly, enabling the bitumen to regain its original hardness and perform as a durable binder within the pavement structure. RC‑250 contains approximately 65% bitumen and is manufactured in full compliance with ASTM D2028 standards for rapid‑curing cutback petroleum asphalts. Its viscosity typically ranges between 250–500 cSt, making it suitable for applications requiring fast setting, strong adhesion, and quick readiness for subsequent construction layers. At Iran Bitumen Supply │ IBITMCO, our RC‑250 is produced from premium vacuum residue feedstock and blended with carefully selected volatile solvents to ensure consistent curing behavior and reliable performance. The thermoplastic nature of the base bitumen ensures predictable behavior across varying temperatures, softening when heated and hardening as it cools.
Understanding How RC‑250 Works
Rapid‑curing cutback bitumen is created by dissolving bitumen in highly volatile solvents such as gasoline. This temporary reduction in viscosity allows the bitumen to penetrate granular surfaces, coat mineral particles, and form a strong adhesive layer. Because the solvent evaporates quickly, RC‑250 sets faster than medium‑curing grades like MC‑30 or MC‑70. This rapid evaporation is ideal for applications where quick curing is essential, such as in warm climates or high‑traffic areas where construction time must be minimized. Proper formulation ensures that the solvent evaporates completely, preventing long‑term softening of the pavement.
Applications of Cutback Bitumen RC‑250
Cutback Bitumen RC‑250 is widely used in road construction and maintenance, particularly in prime coats, surface treatments, and cold‑applied asphalt mixes. Its rapid curing properties make it ideal for preparing non‑asphalt base courses before applying hot mix asphalt. RC‑250 penetrates deeply into the surface, fills capillary voids, binds loose particles, and creates a waterproof foundation that enhances the durability of the final pavement structure. RC‑250 is also used in patching materials, stockpile mixes, and temporary road surfaces, where fast setting and strong adhesion are required. In waterproofing applications, it is applied to seal surfaces, protect against moisture ingress, and stabilize mineral particles. Its ability to bond effectively makes it suitable for priming all non‑bituminous road bases and for use in deviations or temporary construction routes. Because RC‑250 does not require heating, it is especially useful in remote areas, small‑scale projects, and situations where heating equipment is not available.
Packing Options for Cutback Bitumen RC‑250
At Iran Bitumen Supply │ IBITMCO, RC‑250 is supplied in packaging formats designed for safe handling and efficient transport. It is available in new thick steel drums placed on pallets to prevent leakage during containerized shipping, as well as in IBC tanks, bitutainers, and bulk tanker trucks for large‑scale infrastructure projects. These packaging options ensure that the product arrives in optimal condition and is ready for immediate use.
Cutback Bitumen RC‑250 Specification