Non-HDL cholesterol tells you all the bad cholesterol circulating in your blood - not just your LDL cholesterol. It is helpful to know your non-HDL cholesterol because your level of non-HDL may predict your risk of cardiovascular disease even better than your LDL (bad) cholesterol.
Moisture and Alkalinity. Too much moisture in new concrete can cause paint to bubble. It usually takes at least 30 days for moisture to dissipate enough for paint to adhere. You can test for moisture by taping a piece of foil to the surface, sealing all the edges with tape, and checking for condensation after 24 hours. If there is no condensation, the concrete is dry enough for painting. High alkaline levels also can stop paint from sticking to the concrete. It can take anywhere from 30 to 90 days for alkaline levels to drop enough for painting. Test the pH, and look for levels 9.0 and 10.0.
concrete is cured fully by twentyeight days. i think after this date one can apply the first coat of paint on top. Comment from parviz mohamadi, (2/10/2011, 2:44 PM) Surface preparation and conditions for painting of concrete surfaces can be found in SSPC-SP13 or NACE No. 6. That's right: All new concretes can be coated after 28 days, but the humidity of concrete and also soundness must be considered. Comment from Jack Henley, (2/14/2011, 11:59 AM) To my knowledge, there is no one rule that applies to all concrete, the 28-day rule.