Contract 923A is for the construction of tunnels between Tampines East and Upper Changi Stations. Technical data: 1 EPBM diameter:6.5m; tunnel lenght:2x 2400 m
High performance liquid foaming agent, based on biodegradable anionic surfactants, in combination with a natural lubricating polymer, for ground conditioning in mechanized tunneling
High performance liquid foaming agent, based on biodegradable anionic…