Maybe they used more rebar.
Nothing secret about Fibercrete:
http://www.superior-industries.com/tech_data_page_297.html
All you need is a good source of silica sand, like a desert...
Fiberglass also makes concrete flexible so it gives instead of cracking. The trick is to layer it with blacktop layers and it becomes a laminate like a compound bow.
Dog-gone-it, Iran’s been spying on Home Depot.