The selection of a suitable process to produce modified bitumen that meets the requirements of the code requires consideration of the following factors:

1. Selection of raw materials: The selection of the right matrix bitumen is the key, according to the requirements of the code to select the right matrix bitumen grade, such as 70, 90 or 110 bitumen. At the same time, it is necessary to select SBS modifier with good compatibility with the base bitumen.

2. Process design: design reasonable process flow according to production requirements and equipment conditions. You can choose two process methods: on-site processing or finished product production, and choose the right way according to the specific situation.

3. Equipment selection and adjustment: Select the right equipment according to the production capacity and process requirements, and make the necessary adjustments. The design production capacity of the equipment should match the production requirements to ensure that the equipment can meet the production needs.

4. Quality control measures: In the production process, strict quality control is required. The corresponding methods in "Test Regulations for bitumen and bitumen Mixture of Highway Engineering" can be used for testing, such as 135℃ kinematic viscosity test. At the same time, a stabilizer can be added to reduce the interface energy between bitumen phase and SBS phase, and enhance the adhesion between the two phases.

5. Environmental protection measures: In the production process, we need to pay attention to environmental protection. Reasonable treatment of waste water, waste gas and waste residue to ensure that the production process meets the environmental requirements.

Through the selection and control of the above measures, it can ensure that the modified bitumen can be produced in line with the requirements of the code.

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