You can walk on your new concrete in 1-2 days. It is best to let the concrete set 7-28 days for anything heavier. Concrete is approximately 70% cured in the 1st 7 days and fully cured in 28 days. The longer you stay off the concrete; the more durability you will get.
Generally, cracking is caused by poor sub-grade conditions. Either the sub-grade was not prepped correctly or moisture is getting between the sub-grade and the concrete, causing the sub-grade to get soft. Freezing/thawing is another common reason for concrete to crack, not to mention driving heavy equipment on it.
A driveway should last at least 10 years. However, several factors can contribute to a shortened lifespan. Some of those include: proper installation, maintenance, ice melt, having the driveway sealed, caulked joints and washing off road salt in a timely manner.
Most residential jobs take about 2 days. (For example: We can tearout, set grade, form and pour on day 1. We can saw cut control joints, strip forms, clean up, and backfill on day 2.)
This depends on many factors. These include: how big the driveway is, how thick the new concrete is to be poured back (either 4″, 5″ or 6″), rebar or no rebar, broom or swirl finish, tooled joints or saw cut, curb grind, rock base, caulk the joints and/or seal the driveway.
Wait as long as you can to drive your vehicle on new concrete. Seal the concrete with a quality penetrating sealer, which repels water and contaminants. Caulk the control joints of the concrete. Control joints are placed to allow the concrete to crack evenly. By caulking the control joints, you’re sealing the joints to help keep water from penetrating the concrete and compromising the sub-grade.
The thicker the concrete, the more weight per square inch it will support.
Rebar adds extra strength to the slab being poured. Rebar does not keep concrete from cracking. Rebar will help the slab stay intact if or when the concrete does crack.