I am talking 1/4 to 1/2 inch thick, some smaller areas thicker than
that...Here is my idea, tell me if this might work. (This is an
asphalt driveway, BTW). Dig out the cracks with a can opener or
something pointed to make some depth, blow out the dirt with a leaf
blower, fill the crack liberally with quick dry cement, sweep off the
excess, mist with the garden hose to set the cement, then cover the
driveway with black sealant.
Is this too Mickey Mouse to work or what?