ROADBED MATERIAL

摘要

PURPOSE:To obtain a low-cost roadbed material having strength comparable to that of a hydraulic roadbed material by blending a crusher run with hardened bodies of coal ash. CONSTITUTION:A crusher run is blended with 10-30wt.% hardened bodies of coal ash having 10-70kgf/cm<2> uniaxial compressive strength and <=30mm grain size to obtain a roadbed material. In the construction of roadbed, this roadbed material exhibits strength comparable to that of an expensive grain size conditioned roadbed material or an expensive hydraulic roadbed material.