Re: OT - Sealing wood on trailer

Posted by souNdguy on June 01, 2006 at 05:49:56 from (12.64.12.162):

In Reply to: Re: OT - Sealing wood on trailer posted by Harley on May 31, 2006 at 17:58:06:

As i have posted on this very subject before.. i will post again. Used motor oil is not applied to the road. In the case of seal and tack coats for binding the asphalt to the finish grade material, it is a water asphalt emulsion... It cures to almost completely environmentally inert. Spills of the product do not have to be handled like spills of fuel or oil. You just let it cure and scoop it up. I've been on countless road jobs where residents who have nothing better to do, watch the construction yard with binoculars and call DEP every time they see a drip from a vehicle. Every time DEP has showed up to see that it was a 'prime' or 'tack' tank / spraybar leaking, they would throw their hands up, mutter soemthing about a monumental waste of time, and zoom of f the job.

I have MSDS sheets available for those that think this prime coat is used motor oil. I've been working for this same GC for 13 years now.

Next issue is dust control oil. It is -also- -NOT- used motor oil.. again.. MSDS sheets are available.

I've heard from a few people that they thought their city put used motor oil down on the roads for this or that. As far as i can tell.. at least in my area, it has never been done. Our public works director for the city and county remember work from the 50's and don't recall ever using used motor oil.. etc.

Driveway and parking lot seal coats are not much more than water emulsified or solvent thinned bituminous products that cure to an environmentally inert state.. just like asphalt fence paint...

For those of you that think that your municipality is putting used motor oil down on your road.. here is some info.. motor oil, diesel fuel, brake fluid and hyd fluid will disolve the binder in asphalt. You doubt? Walk a road and pick up a few chenks of asphalt.. put them on some carbboard and douse each one with the specified materials... check them in a day and see if they are not softer.

Liquid or heated aspahlt seal and tack or emulsion coats will -not- disolve the asphalt...

Soundguy

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