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.
tokyo a japanese maglev that is the fastest passenger train in the world has broken its own speed recordoperator jr central said the train reached 603 kilometres per hour 375 miles per hour in a test run on tuesday surpassing its previous record of 361 mph 581 kph set in 2003okyo a japanese maglev that is the fastest passenger train in the world has broken its own speed record