What is the maximum time limit for complete discharge from a truck mixer?

The maximum time limit for complete discharge from a truck mixer is 90 minutes. This time frame is established to ensure the quality and integrity of the concrete mix. Beyond this limit, the concrete can begin to set and may not achieve the desired workability or strength, leading to potential structural issues or inconsistencies in the final product.

The 90-minute rule aligns with industry standards and best practices to ensure that concrete remains workable and can be effectively placed. This limit is crucial during construction processes where timing is vital for successful placement and finishing of concrete. Adhering to this guideline helps maintain the performance characteristics of the concrete, ensuring it fulfills its intended purpose in construction projects.