How many revolutions should concrete undergo during delivery to ensure proper mixing?

The requirement for the number of revolutions a concrete mixer should undergo during delivery primarily ensures that the concrete remains homogeneous and properly mixed. The correct answer is that concrete should typically undergo 300 revolutions during transit to ensure that the ingredients are well blended and maintain the desired workability.

This number is significant because after a certain point, too many revolutions can lead to the breakdown of the aggregate and subsequentially affect the performance of the concrete. The standard guideline, which recommends 300 revolutions, strikes a balance that maintains the mix while preventing it from becoming too dry or over-mixed.

Choosing this number helps to optimize the quality of the concrete, ensuring consistency and durability in the finished product. It reflects industry standards and protocols that are designed to maintain the integrity of the concrete mix during transportation and handling.