self-healing-concrete

The Wall That Healed Itself

I keep a list. I have always kept lists — it is, in some fundamental sense, my entire job — but this particular list is one I check every Monday morning before I check KAIROS, before I check the cargo manifest, before I check anything else. It is the list of things that are cracking. Tunnel 7-North, kilometer marker 2.3: hairline fracture, first logged Year 7, Day 190. Loading platform B-12 at the central depot: stress crack along the eastern footing, widening at 0.4 millimeters per year. The R