[drzaiusapelord]

>Historically, additives such as lime or animal blood were used to stabilize it, while modern construction adds lime, cement, or asphalt emulsions.

Curious to know what filler material is practical on Mars. I suspect animal blood is out of the question, unless of course, we consider the human settlers. I can see some potential for an amusing modern-day Modest Proposal with the problem of colonizing Mars.