7 / 2017-11-01 17:53:08

Application Technology of Construction Waste in Subgrade of Jingxin Highway

fill subgrade; construction waste; lime - fly ash improvement; indoor experiment; field compaction

Based on the analysis of the construction waste near the Jingxin project, according to different requirements on different parts of the fill subgrade, different disposal methods for the construction waste are put forward in the paper. In the subgrade non-work area, on-site crushing for the construction waste was carried out, and filled to the bottom of the subgrade directly; the quality control requirements were achieved through the impact of rolling, vibration rolling and compaction on subgrade. In the subgrade work area, the construction waste was sorted, crushed, sieved and blended with lime-ash soil, and the compressibility, permeability and CBR value of the improved soil were experimentally studied, its feasibility was verified.