飞灰复合材料在路基加固中的应用分析  

Application Analysis of Fly Ash Composites in Subgrade Reinforcement

作　　者：刘刚[1] Liu Gang(The 5th Engineering Co.,Ltd.of China Railway 18th Bureau Group,Tianjin 300451,China)

机构地区：[1]中铁十八局集团第五工程有限公司,天津300451

出　　处：《市政技术》2020年第6期266-270,共5页Journal of Municipal Technology

摘　　要：对垃圾焚烧过后的产物飞灰与水泥、化学剂一起配制成飞灰复合材料稳定剂进行了试验,其结果表明:水泥与飞灰质量的最佳配比为1∶1,飞灰复合材料稳定剂掺入软土的最佳掺量为15%,此时软土路基具有最好的工程击实和回弹特性;有限分析结果表明:经改良加固后的路基在沉降变形和水平位移量上均较改良前有较大幅度减小。将飞灰复合材料运用于实际工程中,路基的平均压实度、取芯强度以及路面变形和平整度等均满足相关技术要求,为飞灰的资源化利用提供了新的途径,同时也表明飞灰复合材料稳定剂具有较好的工程和环境应用价值。The fly ash composites stabilizer is made from fly ash,cement and chemical agent.The test results show that the optimum t proportion of cement and fly ash is 1∶1,the same of the stabilizer among the soft soil is 15%.Only when the two conditions are satisfied,can the best engineering compaction and rebound characteristics of the soft soil subgrade be obtained.The finite analysis results show the settlement deformation and horizontal displacement of subgrade are greatly reduced than the former after the improvement and reinforcement.The application of fly ash composites,whose average compactness,core strength,pavement deformation and flatness of subgrade meet the relevant technology needs,provides a new way for resources utilization of fly ash.The stabilizer of fly ash composite has better engineering and en vironmental application value.

关 键 词：路基加固 飞灰复合材料 化学稳定剂 强度 回弹模量 

分 类 号：U418.5[交通运输工程—道路与铁道工程]