干旱区生态环境知识资源中心(Arid): 强风化千枚岩填筑路基改良技术研究

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	强风化千枚岩填筑路基改良技术研究
其他题名	Research on Improvement Technology of Filling Subgrade with Highly-weathered Phyllite
	毛雪松; 周雷刚; 马骉; 郑小忠; 赵文义
来源期刊	中国公路学报
ISSN	1001-7372
出版年	2012
卷号	25 期号:2 页码:20-26
中文摘要	在山区高速公路穿越的大量强风化千枚岩分布区域,为解决路堤填料缺乏,弃土占用农田的问题,同时为了节省投资和保护环境,应用强风化千枚岩作为路基填料。在强风化千枚岩原岩基本物理力学试验及填料的工程特性试验基础上,对加州承载比(CBR)不满足高速公路路基填筑力学性能的填料采用水泥进行改良,分析了不同水泥剂量填料的击实性能、级配特性及工程特性,并在十堰至天水高速公路K22+720~K22+920段现场铺筑试验路,论证强风化千枚岩改良技术的可行性。研究结果表明:采用水泥剂量(质量分数)3%,4%,5%,6%改良后,强风化千枚岩填筑的路基力学性能随着水泥剂量的增加而增加,CBR值和回弹模量都能够满足高速公路路基填筑要求。
英文摘要	In the area with lots of highly-weathered phyllites that the mountainous expressway run through,to solve the problems of the shortage of filling soil and using farmland soil or deserted soil from other places,and to protect the environment and save investment,the in-situ highly-weathered phyllites were applied as the filling material instead of the general soil.Based on both the physics and mechanics experiments and the engineering characteristic experiments of the phyllites,different contents cement was mixed into the phyllites to form a new kind of filling material.The material could satisfy the requirement of the highway standard through mixing the cement.The compaction performance,the graduation characteristics and the engineering characteristics of the filling material under different cement contents were analyzed.The test road being from section K22+720 to section K22+920 of Shiyan-Tianshui Expressway were selected to validate the feasibility of the reinforcement technology.The contents of mixing cement were from 3% to 6% at interval of 1%.The results show that the mechanics performance of the filling material can be reinforced by mixing the cement into the phyllites and can satisfy the requirement of the highway standard.With the increase of the mixed cement content,both the CBR value and the modulus of the filling material increase.
中文关键词	道路工程 ; 强风化千枚岩 ; 试验研究 ; 路基填筑 ; 水泥改良 ; 承载力 ; 回弹模量
英文关键词	road engineering highly-weathered phyllite experimental research subgrade filling cement improvement bearing capacity modulus of resilience
语种	中文
国家	中国
收录类别	CSCD
WOS类目	TRANSPORTATION
WOS研究方向	Transportation
CSCD记录号	CSCD:4497273
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228903
作者单位	长安大学, 特殊地区公路工程教育部重点实验室, 西安, 陕西 710064, 中国
推荐引用方式 GB/T 7714	毛雪松,周雷刚,马骉,等. 强风化千枚岩填筑路基改良技术研究[J],2012,25(2):20-26.
APA	毛雪松,周雷刚,马骉,郑小忠,&赵文义.(2012).强风化千枚岩填筑路基改良技术研究.中国公路学报,25(2),20-26.
MLA	毛雪松,et al."强风化千枚岩填筑路基改良技术研究".中国公路学报 25.2(2012):20-26.