The administration licenses, regulates, and provides financial assistance to small business investment companies and section 301(d) licensees (formerly minority enterprise small business investment companies).
Cured and Dry. Concrete continues to harden for several years after it is poured, but the standard period of initial curing is 28 days, or roughly one month. At this point, the concrete is very close to full strength and is ready to accept most commercially available sealants. However, sealers typically must be applied to dry concrete. You can test the concrete for moisture content by securing a piece of aluminum foil on the sidewalk with duct tape and waiting 24 hours. If the foil is dry when you remove it, the sidewalk is ready for sealing.
Why it is Important to Wait before Sealing a New Asphalt Driveway. By: Mark J. Donovan. You never want to immediately seal a new asphalt driveway. It is important to allow time for a new asphalt driveway to fully cure prior to sealing it. You should allow a minimum of three months before sealing a new asphalt driveway, assuming the weather conditions are optimum, warm day and evening temperatures. If weather conditions are not optimum you should wait even longer.