Slag and asphalt drive

[okie350]

Hello all,

I installed a new driveway when we bought our house 2 years ago. At the time it was a spongy area and was recommended to install slag from a local steel plant to "bridge" the area, first layer was 3-4" then packed in, after a couple of months 1 - 1-1/2" was added over the packed in 3". it worked like a charm. only down side was you had to pick up a few pieces of scrap metal after grading and it had kind of a sulfur smell when the weather was hot for the first month.

Now I want to asphalt over the top of it, but was told by someone that I could not as the Slag would "react" with the asphalt and break it down. the last thing I want is tar like goo being tracked into my garage or house.

Does anyone have any experince with this combo or know anything about my "slag" and can offer any advise

 

[DieselPower]

What kind of slag? There are different kinds. You might want to check with the National Slag Association. Some forms of slag are used to make asphalt.

Slag Applications

You might also try checking with a reputable local paving contractor. If they don't know they probably know who to ask.

 

[okie350]

Thanks for the reply, and interesting site.

It looks Like i have the air cooled Blast furnace type. and according to the thechnical data it has no limitations. so i t should be fine. I hope

 

[caver]

Local highway department gets slag from our power plant to put on the roads for winter storms.

 

[rdh54]

We use blast furnace slag in some of our asphalt on highways in Alabama. I've not heard of it reacting with liquid asphalt.