Another Calgary company, Petrobank Energy & Resources, burns some of the bitumen in place to heat the rest of it.
It was a drainpipe plastered with some sort of bitumen, a medley of broken china and pottery had been pavemented all over it.
"In principal, with some of the bitumen having now worn away, we should be left with a rougher surface, which will allow more energy to be put through the tires, thereby alleviating the aforementioned warm-up issues".
Some of the bitumen properties were altered by the presence of sulfur atoms in the chemical structure, which increase the resistance of asphalt, and the formation of polysulfides, which soften bitumen, giving it more elasticity and increased resistance.
Thermo-gravimetric analysis demonstrated the formation of new chemical compounds, most probably originated through reactions between products from thiourea dioxide thermal decomposition and some highly polar bitumen molecules.
Paralleled to the numerous researches on Crumb Rubber (CR) modified bitumen, some limited work-studies have also been implemented on the effects of specific chemical modifiers, such as Poly Phosphoric Acid (PPA) and Vestenamer, on the performance of bitumen.
The coffins were lined with bitumen and some kind of whitish material.
Some also carry diluted bitumen, the heavy crude from the tar sands that has a much higher carbon footprint than conventional oil.
Although some estimates place this bitumen reserve at 1.7 trillion barrels, only about 10 percent of the deposit is accessible by surface mining.
Not according to Highways magazine: "With temperatures topping 30C, the heat is causing the bitumen in some roads to soften and rise to the top," I learn from the journal's "Highways on Fridays" column.
