Very high levels of AST (more than 10 times normal) are usually due to acute hepatitis, sometimes due to a viral infection. With acute hepatitis, AST levels usually stay high for about 1-2 months but can take as long as 3-6 months to return to normal.
MFMA recommends the relative humidity level for a concrete slab for a non-glue-down maple floor system be 85% or lower and for glue down systems the concrete slab relative humidity level should be 75% or lower before installation.
As a general rule of thumb an increase of 20 degrees Fahrenheit will reduce the setting time of a concrete mixture by as much as 50 percent. As an example, a concrete mixture that reaches final set in three hours at 60 degrees Fahrenheit may reach final set in as little 1Â½ hours at 80 degrees Fahrenheit.As the concrete temperature increases the setting time is further reduced.s an example, a concrete mixture that reaches final set in three hours at 60 degrees Fahrenheit may reach final set in as little 1Â½ hours at 80 degrees Fahrenheit. As the concrete temperature increases the setting time is further reduced.