Sagging tram ore rail track repair method - corrects subsidence by lifting track and sleepers and filling space by quick-setting mortar mixt. including aluminium oxide cement

摘要

The method is for correcting sagging rails or road surfaces due to subsidence. It comprises lifting the track from above, forming a space underneath. This space is filled with quick setting mortar, being below the longitudinal sleepers. The space is supplied with mortar which is a mixt. of clay-like lime, cement and cement with a high percentage i.e. 40 per cent of aluminium oxide and 7 per cent silicic acid. There is also a binding agent liq. e.g. water. The clay-like lime is pref. marl.