Ecocentric definition, a philosophy or perspective that places intrinsic value on all living organisms and their natural environment, regardless of their perceived usefulness or importance to human beings. See more.
Concrete first must be scoured clean with a concrete cleaning solution, a scrub brush or a cleaning machine, then allowed to dry before any etching takes place. Never clean a new concrete pad until at least one month of curing time has been allowed at minimum. After all the water has been removed, the pad should have at least 48 hours of drying time before you apply any etching to the surface. If the weather is particularly humid, wait up to 72 hours for best results. There are numerous types of etching materials available for use with concrete, but as a general rule, they only need 15 to 30 minutes of time on the surface of the concrete to work their way down through the initial layer and etch the surface.
1 The paint usually takes about 5 minutes to dry because it had so much paint dryers in it. However, when we are painting white stop bars, the longer we can leave it dry the better. We have a lot of cones to barricade wet painted areas and have guys directing traffic.  How long does the asphalt sealer take to dry?