What is the difference between Rapid Set No Mix Concrete and Quickset Concrete?

: While Quickset concrete can be mixed in a mixer or wheelbarrow and placed in a normal manner without delay to set within half an hour, Rapid Set No Mix Concrete cannot be mixed and placed in such a way. It is designed to be combined with the predetermined amount of water directly in the area (usually a hole) to be filled with concrete. While Quickset concrete sets at a faster rate than normal Concrete Mix, Rapid Set No Mix stiffens almost immediately. If mixed in a mixer, the setting of Rapid Set No Mix will be disturbed and concrete will not be usable. ... more