The cost of cationic emulsified asphalt is usually higher than that of anionic emulsified asphalt, mainly due to the following reasons:

1. Raw material costs

Cationic emulsified asphalt: using cationic emulsifiers, the price is relatively high.

Anionic emulsified asphalt: using anionic emulsifiers at a lower price.

2. Production process

Cationic emulsified asphalt: The production process is complex and requires precise control of pH and temperature.

Anionic emulsified asphalt: The production process is relatively simple and the control requirements are low.

3. Performance requirements

Cationic emulsified asphalt: requires high adhesion and early strength of stone materials, requiring higher quality raw materials and additives.

Anionic emulsified asphalt: Low performance requirements, low cost of raw materials and additives.

4. Scope of application

Cationic emulsified asphalt: suitable for high-grade roads and complex environments, requiring higher performance and quality.

Anionic emulsified asphalt: mostly used for general roads, with lower performance and quality requirements.

5. Summary

Cationic emulsified asphalt is usually more expensive than anionic emulsified asphalt due to factors such as raw materials, production processes, performance requirements, and application scope. The selection should be based on specific engineering requirements and budget.