To develop a model for predicting the strength of modified bitumen, you would typically need a combination of the following parameters:
Composition of Bitumen: Including the type of bitumen and the specific additives used for modification.
Temperature: The temperature range within which the modified bitumen is expected to perform.
Time: The duration for which the modified bitumen needs to retain its strength.
Testing Method: The specific testing method or protocol used to measure the strength, such as penetration tests, softening point tests, or viscosity tests.
Aggregate Properties: If the modified bitumen is used in asphalt mixtures, properties of the aggregates used in the mixture can also play a role.
Environmental Conditions: Factors such as exposure to sunlight, moisture, and traffic load should also be considered.
These parameters, along with a robust dataset, can help in building a predictive model for the strength of modified bitumen. It's crucial to ensure the dataset is comprehensive and representative of the various conditions and compositions the modified bitumen is likely to encounter.