Reject modernity. Embrace tradition.
Reject modernity. Embrace tradition.
When I was a yout, they had trucks with a huge tank and a sprayer on the back. The truck would drive all the country roads spraying the dirt with waste oils. This was done to keep the dust down. Smelled terrible. Miles and miles of dirt roads that ran all around by rivers and lakes.
It is crazy to think about that now.
I was reading about one where the oil was contaminated with some truly terrible shit, dioxin maybe? Several people died. They turned that whole area into a Superfund site.
Sounds like chipcoat. The “tar” is bitumen, not waste oil – basically asphalt minus the crushed rock aggregate.
It’s messy as hell but no more toxic than regular asphalt.
They still do that on sites with dirt tracks that get dusty. Only, they spray with water.
It’s pretty shitty and foul smelling water, mind.
Chip sealing! I know the process as they still do this for neighborhood streets around here. The oil is more like a tar and solidifies as it cools thus ‘gluing’ the chips to the older road surface. Sort of a stopgap before having to repave completely. I don’t think this is done on dirt surfaces as it doesn’t seem workable.
This process is pretty different than what I described originally. The dirt roads only hold those oils for a relatively short period.
Highway engineer here. It’s asphalt (or bitumen), which is a product of crude oil refining. It’s all the stuff that stays at the bottom when you heat crude up to over 1000°F. Because it’s so sticky & viscous, it has to be heated up to around 300°F in order to be used. Asphalt is the “binder” in a pavement mixture that includes silt, sand, and rocks in various quantities and sizes, and these days the asphalt binder is usually modified in some way to improve its performance in the climate or application it’s going to be used in.
A chipseal is made by spreading a continuous layer of small rocks on a prepared surface and spraying the hot asphalt over it after, which binds the rocks together. It’s similar to Macadam pavement which was developed in the early 1800s and continued to be used well into the 1900s, often as a base layer for a more modern hot-mix asphalt pavement. Tar used to be used in paving a lot, but tar is made from coal and environmental regulations don’t allow it anywhere that I know of. There’s also a more state of the art technique that involves a looser layer of slightly larger stones, sprayed with a modified asphalt emulsion (modified in this case meaning with rubber or polymer for elasticity, and emulsion meaning it’s mixed with water to make it easier to work with), called a stress-absorbing membrane interlayer, used for reducing reflective cracking from an existing pavement surface into a new overlay surface. Modified asphalts & emulsions are often used for chipseals these days, too.
Lecture over.
This really was the advice given till the 90’s or so.
My dad use to have a hole filled with cat litter to pour oil as that was the recommendation.

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