Not home improvement per se, but I can see people using this at home.
I put 8 bags (400lbs) of this in a good sized pothole at work. It's Quikrete brand blacktop repair. I only used this because the local Home Depot didn't carry a single alternative product.
They say to cut out or square off the edges of the pothole, and for good reason. If it tapers upwards until it's very thin, it won't adhere very well at the edges. We tried it without chipping the pothole sides square anyways, because frankly while we made time to do this, we had more important things to do.
The reviews are hit and miss, with some really,
REALLY negative ones out there. The wording on the instructions has some...interesting...legalese (my favorite being
"...
produces a virtually permanent repair". FFS, I don't want "virtually" permanent, I want completely permanent).
This shit is sticky as fuck right out the gate. After tamping it in stages and leveling it as best I could, I tried putting plywood over it and driving over the plywood. It didn't stick to the plywood in huge amounts, but it was covered in a lot of specks and small pieces of whatever black, tarry binder is in this. Supposedly you can drive on this immediately (they say you should, in fact, to tamp it down further) but on Day 1 I tested it with my finger and not only was it the consistency of oatmeal, it stuck to my finger pretty well. The morning of Day 2, when it was still cold, it seemed SLIGHTLY firm, but as soon as the sun came out...completely gooey. On Day 3 someone insisted on driving over it, and left a noticeable depression about 1/8" deep.
The literal best tip in regards to this was to brush some fine sand over the top, so it wouldn't stick so badly. I was worried someone would drive over it while it was still sticky, and flick small amounts up onto their car. Once I brushed some sand over the top, the stickiness was eliminated and we started driving on it.
After 4-5 days we asked one of our local freight drivers to drive over it to see what would happen. He wasn't fully loaded but he had a couple tons at the front of his trailer, above the fifth wheel/drive axle. We watched as this stuff smooshed a little, but it actually took the weight.
From all of the reviews, it seems like the first 2-3 days freaks people out because it's so soft and sticky, especially in the summer heat. It did harden up, but I don't know if I trust it enough to drive on it immediately like they say, without putting sand over the top.