CLEVA-Crete creates and adds more of the right type of calcium silicate hydrate, as it decreases setting times by 13 to 17% on average. It is typical to see 7 to 10 day strengths after 24 to 72 hours from being poured. After approximately 72 hours, there should be no moisture released out of the slab. Full curing time of the concrete usually occurs at the same time as normal, at or soon after 28 days, as with any other concrete or control mixes. At this point there is typically no more than 4 to 11% increase overall after 28 days.
The densifying process of the surface hardness is dependent on weather conditions and humidity. In recent testing, after 28 days of a taber-rotary-abraser test, CLEVA-Crete showed to be a little softer than control, however this all changed after 90 and 120 days. Using the same taber-rotary-abraser test, CLEVA-Crete showed a lot harder and denser than control and all other densifying products tested.
Because of this many engineers are signing off for early stripping, typically four days earlier per each floor.
With good planning, this may bring each project forward based on how many levels in the building and your capacity of your trades to keep up with the concrete pours plus, if vinyl layers can be screeding levels and putting down floors typically after day 14, this also brings a project forward.
On projects in the US using this technology, 20 storey project finishing times have been brought forward by 9-11 weeks.
