Johannes Hint testing the strength of Silicalcite. Photo depitcts Hint standing next to a compression measuring-device as he looks at a roughly 20-cm² block of silicate concrete.

#Silikaltsiidi (Silikaltsiit)
#Tallinn #Nõmme #Männiku #Liiva
#Silicalcite, aka silicate concrete, a building-material more commonly known as #Laprex, invented and manufactured by #JohannesHint (brother of #AaduHint, see #Vesse),...
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