摘要
吹填土是由水力吹填形成的,颗粒很细,固结性能差,吹填以后要经过很长时间才能自然沉积固结,待表面形成硬壳后方可进行加固处理,因此,缩短沉积固结时间,使吹填土尽快地从泥浆状态转变为具有一定承载力的地基,是首要解决的问题。从物质组成的观点,分析土体内部的物理化学特征,进行室内模拟加固试验,对吹填土加添固化剂以加速其沉积固结。通过添加水泥作为固化剂,对加固效果进行详尽的分析和研究,从而揭示其固化机理,为吹填土地基的加固提供一种经济可行的方法。
The dredger fdl is formed under hydraulic dredging, characteristics of fine particle and weak in consolidation capabihty with slow natural sedimentation and consolidation process, and it takes a long time to achieve the consolidation completely. Only when the surface duricrust has formed, should the ground improvement treaunent be started. So it is necessary to accelerate the consolidation and make the dredged mud become an integrated part of the ground with certain beating capacity. Physicochemical characteristics were analyzed in terms of material composition and laboratory model tests were accomplished. As a solidifying agent, lime was added in the dredger fill to accelerate the consolidation. The sohdifying mechanism has been demonstrated through lab test and analysis of the effect of the treatment. A more economical and feasible method to consolidate the foundation of dredger fdl is presented.
出处
《公路交通科技》
CAS
CSCD
北大核心
2006年第6期45-48,共4页
Journal of Highway and Transportation Research and Development
基金
国家自然科学基金资助项目(49972089)
关键词
吹填土
土壤
固结
dredger fdl
hme
consolidation
