Scott Howard of Earthen Hand tipped me off to this soil stabilizing product that could be useful for some projects. Text below is from the PolyPavement website.
PolyPavement solidifies earth to make Natural Soil Pavement. It is a liquid soil solidifier that converts the earth itself into a solid pavement. PolyPavement converts the earth itself into a solid pavement. PolyPavement is LEED compliant and can contribute to attaining LEED Credits in many categories for pavement. Because PolyPavement incorporates natural, indigenous soil, and has a much higher SRI (Solar Reflective Index) than black asphalt, and can be up to 100% recycled, it is favored by many green builders and architects.
In addition to being aesthetically pleasing, PolyPavement is non-toxic to plants and animals and it contains no known carcinogenic ingredients such as vinyl acetate or acetaldehyde. It has been tested and proven safe for sensitive aquatic life and does not leach into the ground water. PolyPavement may be applied in environmentally sensitive areas without worry or concern. PolyPavement is 100% safe for children and pets. It contains no VOC’s (Volatile Organic Compounds). PolyPavement is a proprietary blend of Acrylic Polymers that are 100% safe for human exposure. The vapors are not harmful and no protective clothing or respirators are required when PolyPavement is being spray-applied.
Note: search our blog for other stabilizers such as lime, cement, Alker Technology, gypsum, caliche.
Earthbag Building Blog 
Wow. Again, very cool. I just talked to Scott last month about this article http://www.designboom.com/weblog/cat/8/view/11777/sandstoneroad-by-thomas-kosbau-andrew-wetzler-iida-awards-2010-winner.html where (much like the post you had https://earthbagbuilding.wordpress.com/2010/09/03/turning-sand-to-stone/ ) they would be able to lower a whole city’s temp 2-3 degrees Celsius using sand and bacteria for sandstone roads.
This would be great for paving the road up to your home, would you use it for the base floor as well?
Yes, I think you could do floors with this same material.
PolyPavement sounds fascinating. I have a 2 mile road where I was going to have new gravel laid and graded, but this sounds like a better deal since it wouldn’t have to be redone for 5-10 years.
This looks like an amazing product with so many uses.
Seems like you could use it for a roof as well — shovel a couple inches of sand or soil onto a roof, then seal it rock hard. With no traffic up there at all, should last a good long time.
Yes, very interesting. Just be sure your roof is strong enough to carry the load. Also, there should be no flex in the roof or it might crack and leak.