Experimental Study on the Pavement Performance of Cement-Improved Silty Fine Sand

In view of the fact that there is in shortage superior roadbed fillers gobi and desert areas based on economical environment-friendly concept, cement-improved silty fine sand will be used as filler a railway construction project, which has engineering characteristics difficult compaction local sands loose structure, within territory Jiuquan, Gansu Province.The test indicated actual presented relatively concentrated particle sizes this composition was uniform to compact. The 7d saturated unconfined compressive strength correlated with cement content, curing age coefficient, also showed good linear fitting relation content. As delay time sample molding lengthened, samples gradually reduced, retention rate had favorable molding. coefficient detected using sand-cone method field test, basis, “ex post detection” proposed detect special type fillers.