RE:RE:RE:RE:Biden's infrastructure spending plansLook at what a bridge embankment is. Cellular concrete is perfect as the back fill for that part of the bridge. There is a paper out of the university of Waterloo. Google: THE USE OF CELLULAR CONCRETE AS A SUB BASE FOR ROAD CONSTRUCTION. you will see it's use there is showing advantages. The soils in southwestern Ontario are water saturated. Freezing and thawing creates heaving which in turn breaks up the paving. With cellular concrete as a sub base because of its porous character it doesn't expand and contract. No heaving, the roads last longer. That also makes it valuable in the pipeline construction. It protects the pipelines from perma-frost. There are many uses for it. We are just touching the tip of the iceberg with this product. It's a lot to do with educating the engineers and construction people. 3 years ago I talk to at minimum 10 cement people. NOT ONE HAD EVER HEARD OF CELLULAR CONCRETE. Look at the use of JAGGER JOISTS. 25 years ago, no one had ever heard of them. Know every new housing construction site, that's all you see.