According to Chinese media, naval experts have been looking into two types of partially-submerged warships, both of which would displace about 20,000 tons, Popular Science reports.
This type of design could make the massive, missile-carrying warships stealthier by masking their radar signatures as they submerge – or, it could allow for high-speed operations up at the surface.
Experiments were conducted in which carefully sized grains of pure calcite and dolomite were added in the amount of 1% to plant raw mixes.
Clinkers resulting from laboratory burns of these mixes and commercial clinkers containing coarse quartz were compared and a technique for solving some burnability problems was developed.
Ausführliche Arbeitsweisen für das Polieren und Ätzen sind angeboten.