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.
Top 10 Fastest Trains In The World. Two Chinese trains top the list, with the fastest one reaching speeds of 431 km/h. 1. Shanghai Maglev Train, China. Operating speed: 431 km/h Capacity: 501 km/h The Chinese magnetic levitation train was built as a joint venture by Siemens and ThyssenKrupp and was launched in 2003.