When hauling end dumps of HazMat soil in freezing temps, some guys sprayed diesel along the floors and walls. I personally sprayed Antifreeze and never had a load stick. Prior to that, I can't express enough how I felt with 24 tons of dirt up in the air that wouldn't budge
It doesn't get real cold here, but when it does freeze and I have to haul something with a lot of moisture I use antifreeze too. I save my old antifreeze in a drum any time I replace it. When I need it in the winter I use a pump up sprayer to spray the sides and floor of my end dump.
iv been experimenting a bit with some different oils to spray in the trailer so far iv tryed diesel, motor oil, linseed oil, and wd-40 all sprayed out of a hand pump off sprayer and it seems anything is better than nothing, but swinging a 20lb sledge to get the rest of your load to come out is not fun. the linseed oil lasted a couple loads as well as motor oil, but neither of them sprayed very well (too think) linseed oil was 20 bucks a gallon motor oil about 14. wd-40 was around 20 a gallon as well. Diesel being the cheapest at $4 a gallon. the wd and Diesel don't last long. nothing i have tryed so far guarantees a clean dump in single degree temps. but about anything is easier to get it all out than if you have nothing sprayed in your trailer. iv been hauling around 8 loads a day can get to be a lot of swinging a sledge. ill add antifreeze to my list of things to try. any other suggestions
When I hauled end dump in Chicago I bought a bag of calcium chloride chips, the stuff you put on you sidewalk to melt snow. Not rock salt. I diluted it in water jugs the previous night and just refilled my spray bottle throughout the day. The colder it got the more I sprayed. Sometimes after each load. We couldn't do oil or diesel because when we dumped dirt at the pit they had a hand held sniffer device that smelled any chemicals. If it went off the load was rejected and you had to take it back to the load site. Other than that I have seen guys put plastic liners in belly dumps that work great but cost some bucks.
A couple of guys around here used to use used cooking oil when they ran hot mix asphalt. It seemed to work well for that, but I'm not sure about how it would work as a cold weather release agent. It might be worth a try though, and if it works would probably be relatively cheap. Most restaurants probably have to pay someone to dispose of it, so they might give you some for free. You'd probably have to strain it though to remove any food particles.
