A gap of approx. 3/8" has appeared between our asphalt driveway and garage. I'm looking for a product to fill the gap. Several products (primarily caulks) seem to do the job, but none actually say so. I assume there must be products commonly used because most asphalt driveways abut masonry at some point. Any suggestions?

I make DIY concrete weights so i can work out at home due to the lock downs. Now i usually make the weights, let it dry for 3 days. Then put it outside to dry some more, once i remove them from the mold. The bottom is always still a bit dark grey/wet. However once they're outside for a day, it hardens just fine. My question is: Can cold weather damage my concrete weights? They're already solid after 3 days, however they're just not 100% completely dry yet when i remove them from the mold (since they turn white when they do). The weather where i live is around freezing point. So 32 F or 0 degrees celcius. Will this damage the concrete weights? will they crack if the little bit of remaining water in the mostly dry weights, freeze and expand? Or will it be fine since they've already solidified? The package says concrete dries in 48 hours and they've been inside the mold for 72 hours, but i guess some moisture always stays trapped at the bottom. Thank you very much for reading.