Expansive Hydraulic Cement from China
Expansive hydraulic cement is a specialized binder containing ettringite-forming agents that counteract shrinkage during curing, making it ideal for prestressed concrete and crack control. It hardens through hydration and expands slightly to improve structural integrity. This product falls under tariff item 2523.90.00 as 'other hydraulic cement' because its unique composition does not match the specific definitions of Portland, aluminous, slag, or supersulphate cement.
Duty Rate — China → Canada
Import Tips
• Confirm that the expansive agents are not classified as separate chemical additives that would shift the product to a different heading; the cement must remain a hydraulic binder
• Provide technical data sheets to the CBSA showing the cement's hydraulic properties and expansion mechanism
• Check if the product requires special permits under Canadian construction material regulations, especially for use in infrastructure projects