Working with Cold Asphalt
In our area we have a problem with water flooding into our soi during heavy downpours. So I got some cold asphalt at Home Pro for 93 baht a bag. Each weights about 20 kilos. I didn't take a whole lot of photos, but here's a brief story about working with asphalt.
You'll need your asphalt, a broom, a heavy hoe (we have one that is all metal, so heavier and better for this project than a wooden handle), some cheap leather gloves (you'll probably want to throw them away after wards) and a knife to cut the bags. Oh, and your car :)
You want to sweep the lay down area as good as you can. Where I started the 'speed bump' is on sand, so we'll see how that works after the first rain. But the rest is on older asphalt. I didn't score the old asphalt before hand. Maybe I should have, but I don't think you need to, from what I've read on the Internet.
https://teakdoor.com/Gallery/albums/u...se_Stuff13.jpg
I found that it works best if you cut the outer and inner bags of asphalt on 3 sides and then kind of pour our the asphalt where you want it to land. Sometimes the asphalt comes out firm and you've gotta push it around. Other times it comes out almost loose.
https://teakdoor.com/Gallery/albums/u...se_Stuff14.jpg
https://teakdoor.com/Gallery/albums/u...se_Stuff15.jpg
Don't worry about molding it by hand. Just get the basic shape and then use the back of the hoe to pack it down a bit more. Get the edges, where the old meets the new, packed down as good as you can. You'll still be able to slide the asphalt around if it starts to go off of the line that you intended, like mine did.
You can make the bump big or small. But for what I wanted, I found that the length of a bag (about 18") was how long that section of the bump would be. So if you want a 180" (15 feet) at what will end up to be about 4" high, get 10 bags.
Once you have everything laid down, lined up and packed down the way you want it to set, get in the car and pack it down some more. Surprisingly, it doesn't deform a whole lot. I went over the top diagonally two times and then lined up on it straight on and mashed it right on top, then once on each side and then once more along the top.
But the 6"-7" high pyramid shape I'd hoped for (for maximum height) ended up more like a 4" traditional crescent shaped bump. But that's OK, it's looking good.
https://teakdoor.com/Gallery/albums/u...se_Stuff18.jpg
It's actually turned out pretty well, actually. I need 5-6 more bags, but I'm feeling good that it will help keep at least most of the water out.