—”Unless it includes rebar, concrete is brittle”
There are many mechanical additives for concrete, not all of them can be pumped.
Yes, some of the fibers would protrude from the wall.
They could lay in durawall.
The concrete used on the pyramids, no rebar?
Still holding!
The concrete used on the pyramids, no rebar?
Still holding!
—
The pyramid is compressive loads.