石灰粉煤灰基层铣刨旧料在有轨电车路基结构中的应用研究

Research on the application of lime fly ash base milling old material in tram subgrade structure

有轨电车轨道大多沿现状道路敷设,工程施工中就需要破除道路。道路破除产生的废料形成了环境负担,也增加了工程成本。本文基于亦庄新城现代有轨电车T1线工程实际,在部分基底换填段采用现有道路铣刨产生的石灰粉煤灰(二灰)旧料替代AB组料进行填筑,经专业试验室对换填料及现场填筑段进行物理力学试验,验证了石灰粉煤灰铣刨旧料在有轨电车路基结构中替代传统AB组料的可行性。

Most of the tram tracks are laid along the existing roads,and the roads need to be broken during the construction of the project.The waste generated by road breakage creates an environmental burden and increases the cost of the project.Based on the actual project of modern tram line T1 in Yizhuang New Town,the old lime fly ash(second ash)produced by the existing road milling is used to replace the AB component in part of the base replacement section,and the physical and mechanical tests of the replacement filler and the on-site filling section are carried out by the professional laboratory,which verifies the feasibility of the old lime fly ash milling material to replace the traditional AB component in the tram subgrade structure.