摘要
针对公路路基密实度和强度快速检测的迫切需求,利用常规灌水和烘干法检测对快速无损检测(附加质量法和核子密度仪法)进行了验证,证明了无损检测的可行性,无损检测方法具有操作简单、检测速度快捷等优点;通过试验参数的相关性分析,获得了干密度与变形模量和承载力特征值的线性关系,其回归方程分别为E=512.76ρd-527.16、R2=0.8704;frk=402.85ρd-374.54、R2=0.7692.
For a typical project of highway subgrade compaction degree and bearing capacity,performances of routine test and non destructive testing were compared in experimental points.The results show:non destructive testing is fast and nondestructive for tested coarse material,etc.,the additive mass method is one of the most prospective nondestructive methods;The linear interrelation between the dry density and modulus of deformation is about 0.8704、regression equation E=512.76ρd-527.16;The linear interrelation between the dry density and bearing capacity is about 0.7692、regression equation frk=402.85ρd-374.54.
出处
《贵州大学学报(自然科学版)》
2012年第3期97-99,共3页
Journal of Guizhou University:Natural Sciences
基金
贵州省教育厅青年项目(黔教高发[2007]321号)
关键词
公路路基
干密度
密实度
承载力
highway subgrade
dry density
bearing capacity
compaction degree