Common rebar is made of unfinished tempered steel, making it susceptible to rusting. Normally the concrete cover is able to provide a pH value higher than 12 avoiding the corrosion reaction. Too little concrete cover can compromise this guard through carbonation from the surface, and salt penetration.
Quick Answer. Maglev trains can reach speeds of up to 361 mph. This was the fastest speed reached by the MLX01, which was measured on December 2, 2003. Executed on the Yamanashi maglev test line in Japan, the test run was administered by the Central Japan Railway Company and the Railway Technical Research Institute. Keep Learning.
Story highlights. 1  Elon Musk's proposed Hyperloop system would be twice as fast as world's speediest train. 2  China's Shanghai Maglev train has topped out at 311 mph. 3  To travel from L.A. to San Francisco in 35 minutes, Hyperloop would have to go almost 700 mph. 1  Just how fast would the Hyperloop transportation system envisioned by entrepreneur Elon Musk have to be? Try more than twice as fast as the fastest commercial train in the world.