Natural Cement Clinker Ground from United States
Ground natural cement is produced from argillaceous limestone that is kiln-fired and ground, providing hydraulic setting similar to Roman concrete. It is a sustainable alternative for historic restoration and modern construction. This product is classified under tariff item 2523.90.00 as 'other hydraulic cement' because it is not a synthetic Portland or other specific type.
Duty Rate — United States → Canada
Import Tips
• Ensure the natural cement is not mixed with any additives that would change its classification; it must remain a pure hydraulic binder
• Provide evidence of the production process (e.g
• kiln temperature and raw materials) to the CBSA to support classification
• If the cement is used for historic restoration, check if Canadian heritage regulations require specific certifications