Cutback bitumen is a specialized form of bituminous binder that is produced by incorporating solvents or distillates into regular bitumen. These solvents enable the bitumen to have reduced viscosity, making it more manageable for various construction purposes. The solvent content in cutback bitumen determines its classification, such as Rapid-Curing (RC), Medium-Curing (MC), and Slow-Curing (SC), each catering to specific project requirements.
The production of cutback bitumen involves a carefully orchestrated process. It begins by blending the base bitumen with a suitable solvent. Common solvents include kerosene, gasoline, and diesel. The mixture is then subjected to a controlled heating process, allowing the solvent to evaporate gradually. This process results in a bituminous material with the desired consistency, ready for use in construction projects.
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