TL;DR: Sulfur Concrete is a main entry in the 外星矿物知识引擎 database.
Mixing molten sulfur (130-140°C) with regolith aggregate to produce concrete without water; sets rapidly in vacuum
Organization
University of Michigan, NASA, ESA
Status
Laboratory and field demonstrated; sulfur sourced from troilite in regolith
Breakthrough
Demonstrated structural sulfur concrete with compressive strength comparable to Portland cement concrete