CRMA Production & Deliveries
A controlled Process: From mixing phase to site delivery
K2 Bitumen’s Crumb Rubber Modified Asphalt (CRMA) production is a precisely engineered process
It is designed to ensure consistent quality, optimal temperature control & compliance with JKR standards throughout the production and delivery cycle
1. Loading & Temperature Conditioning
The process begins with K2 Bitumen’s specialized tankers, pre-fitted with integrated burners, heating coils, and mechanical stirrers. These tankers are loaded directly with Crumb Rubber Modified Bitumen (CRMB) from the factory.
The heating coil system maintains the CRMB at a stable temperature of 180°C, while the mechanical stirrer ensures uniform heat distribution, preventing segregation or localized overheating within the mixture.
2. Transportation to Premix Plant
Once conditioned, the CRMB mixture is transported to the designated premix plant using the same specialized tankers. During transit, the heating system remains active to maintain the temperature and viscosity of the CRMB mixture, ensuring it arrives in optimal condition for further processing.
3. Transfer & Controlled Storage
Upon arrival, the CRMB mixture is unloaded into the plant’s storage tank, where a slow, controlled heating processcontinues to preserve the material’s workability. The storage temperature is carefully regulated between 160°C and 170°C to prevent degradation while maintaining mix readiness.
4. Asphalt Mixing & Site Delivery
When the site requests CRMB for paving, the stored material is blended with aggregates in accordance with JKR’s technical specifications to produce Crumb Rubber Modified Asphalt (CRMA).
The final asphalt mixture is maintained at approximately 190°C prior to dispatch. During unloading at the job site, the temperature is carefully controlled at around 180°C to ensure superior workability, bonding, and long-term pavement performance.
