Cellular Concrete Question & Answers - Set Time

What  is the set time for cellular concrete?  

The set time for cellular concrete is typically a little longer compared to “normal” concrete, due to the surfactants used in producing the foam. However, like anything produced with Portland cement, there is a finite time for production and placement. Generally, we recommend that the working time be limited to about four hours once the Portland is mixed with water, or about three hours after the foam is added. After this much time, the material should be left alone to continue the set process. Continuing to pump or move the material can result in collapsing and failure of the material. However, the set time can vary depending on the application, jobsite conditions, and the use of either retarders or accelerators.

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