1350.06.02 – Delivery…

1350.06.02 – Delivery Equipment
The prohibition on the use of mobile mixers raises the following concerns:

• The restriction is not aligned with current industry practices, where mobile mixers are widely used and accepted across North America, including in jurisdictions governed by CSA standards.
• Mobile mixers are capable of producing concrete that meets all CSA A23.1 requirements for quality, strength, and durability when properly operated and controlled.
• Prohibiting mobile mixers limits flexibility in concrete supply, particularly for remote locations, small placements, or projects with variable demand.
• Mobile mixers can enhance concrete quality by allowing fresh mixing at the point of placement, reducing the risk of slump loss, extended haul times, and retempering.
• The restriction may lead to increased project costs and logistical challenges by limiting available supply options and requiring reliance on ready-mix trucks only.
• There is no clear technical justification provided for excluding mobile mixers, especially when performance requirements (e.g., strength, air content, durability) can be verified through standard testing.
• A performance-based approach, consistent with CSA A23.1, should be adopted, allowing any delivery method that can demonstrate compliance with specified requirements.
• It is recommended that mobile mixers be permitted, provided they meet applicable CSA standards and quality control requirements.