ice asteroids as structural material

have an inner and outer skin unnecessary. The outer skin would retain
heat making the ice weaker. The words on his chart indicated that ice
had higher tensile strength when it is colder. So any retention of heat
in the ice would be undesirable. Perhaps one would be able to tear off the outer skin and then lay down aluminum foil. Or perhaps even lay down an extremely thin layer of aluminum via vacuum vapor deposition. Other and important alloys
developed by Professor Kingery are ice-Fiberglas mixtures. Ice which
contains as little as four volume per cent Fiberglas is 10 times
stronger than pure ice. Natural ice has a tensile strength of 200 pounds
per square inch, whereas one Fiberglas-ice alloy has a tensile strength
of 2,000 pounds per square inch. I had beenwondering about running steelcables through the water before it froze. I'm sure the same mass offiberglass could be much more finely divided and work even better.