Research methods: This paper verifies the suitability of red soft rock-filling for embankment through the geotechnical centrifugal model test.
Research results: The after-construction settlement of red and soft rock-filled embankment will gradually weaken with increasing of compacting parameter. Under the conditions of compacting parameters:0.87，0. 90，0. 93，0.97 respectively，the ratios of final settlement after construction to heights of embankment are 2. 4‰, 1.913‰, 1.833‰, and 1 .673‰ respectively which could satisfy the requirements of after-construction settlement control standard for subgrade as regulated in “Temporary Regulations for Design of 200 km/h Railways".
Research conclusions: Red and soft rocks could be used directly as embankment fillings and its compacting coefficient should be controlled above 0. 93. This research outcome has a great significance for construction of the railways and highways in the areas covered with red and soft rocks.
2007, Vol. 24 
