石粉改良土在新耒阳站场施工中的应用

Powder Improved Soil Application in the Field of Construction in the Xinleiyang Railway Station

近年来,随着铁路工程的跨越式发展,在站场填筑中,细粒土的物理改良和化学改良被广泛应用于站场路基的填筑中。以耒阳站场路基填筑为例,依据液塑限试验的结果,将D组填料改良为C组填料,并根据标准击实试验,确定了掺和料的最佳比例。通过对细粒土掺加不同比例的石粉,解决了D组填料无法直接应用于站场路基填筑的技术难题,且实际填筑的各项检测指标均可满足设计规范要求。

In recent years, with the great leap forward development of railway engineering, the station filling, the filling of fine grained soil physical modification and chemical improvement is widely used in the station roadbed in. In order to Leiyang Railway Station filling subgrade as an example, based onthe liquid limit and plastic limit test results, the D group filler for improved C group filler, and compaction test according to the standard, to determine the best proportion of admixture. Through the powder on the fine grained soil by adding different proportion, solves the D group filler can not be directly applied to technical problems of subgrade filling station, and the actual filling indexes can meet the design requirements.