干旱区生态环境知识资源中心(Arid): 夯筑土体风蚀损化效应及加固保护试验研究

Arid

	夯筑土体风蚀损化效应及加固保护试验研究
其他题名	Experimental study on the effects of wind erosion and reinforcement for the rammed soil
	毛筱霏; 赵冬; 张卫喜
来源期刊	西安建筑科技大学学报. 自然科学版
ISSN	1006-7930
出版年	2015
卷号	47 期号:4 页码:555-559
中文摘要	在我国西北干旱地区,由于干燥、风沙等自然环境因素的作用,风蚀损化是土建筑遗址破坏的主要因素之一.基于新疆吐鲁番高昌故城遗址保护工程的现场勘察与试验结果,针对典型的风蚀病害,分析了土体风蚀损化的演变机理,在土体物理、化学等材性试验的基础上,设计了针对夯土墙体的风洞、电镜微结构分析试验.研究结果表明,对于高昌故城夯土材料,SiO_2含量占到58.31%,土体间粘性介质相对较少,另外, C1~-, Na+、 Ca~(2+)离子的含量较多,盐分在地下毛细水和包气带水上移、雨水冲刷下移等因素作用下迁徙也会加剧土体的风蚀损化效应;以有机硅改性丙烯酸乳液喷涂渗透加固土样,通过风洞、微结构观测试验,携沙风中沙粒的磨损效应是遗址风蚀损化的主要原因,通过风的类型、风速、吹蚀时间以及加固土样与原状土样风蚀前后微结构特征参数等因素的对比,可见采取土体表层喷涂加固的方式可有效降低风蚀损化效应的进程.
英文摘要	As the affection of drying, wind and other natural factors, wind erosion is one of the major damage factors for earthen architecture sites in the northwest arid or semi-arid region of China. Based on the survey and measuring for the protected project in Gaochang Ruins, the evolution mechanism of wind erosion was analyzed for the typical disease. On the basis of physics, chemistry and others tests, wind tunnel and electron microscopy tests were designed to analysis the rammed wall. The results showed that Si02 content account for 58.31% in rammed soil, and so the viscous medium between soil particles was less. On the other hand, the ion content of soluble salt were more, just as Cl-、Na+ and Ca2+. As the salt migrate under the effect of capillary water, the effect of wind erosion increased obviously. Through the wind tunnel and microstructure observation tests, test results shown that the net wind had no affection on the site soil. And the abrasion effect of sand in wind was the major reason of wind erosion for earthen site. By comparing the type, speed of wind, the micro-structural characteristics and other factors between reinforced soil and undisturbed soil, it is obvious that spraying reinforcement to the surface soil can effectively reduce the processes of wind erosion.
中文关键词	土建筑遗址 ; 风蚀损化 ; 喷涂加固
英文关键词	Earthen architecture sites wind erosion spraying reinforcement
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Construction & Building Technology
WOS研究方向	Construction & Building Technology
CSCD记录号	CSCD:5521172
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233469
作者单位	毛筱霏, 西安建筑科技大学理学院, 西安, 陕西 710055, 中国.; 赵冬, 西安建筑科技大学理学院, 西安, 陕西 710055, 中国.; 张卫喜, 西安建筑科技大学理学院, 西安, 陕西 710055, 中国.
推荐引用方式 GB/T 7714	毛筱霏,赵冬,张卫喜. 夯筑土体风蚀损化效应及加固保护试验研究[J],2015,47(4):555-559.
APA	毛筱霏,赵冬,&张卫喜.(2015).夯筑土体风蚀损化效应及加固保护试验研究.西安建筑科技大学学报. 自然科学版,47(4),555-559.
MLA	毛筱霏,et al."夯筑土体风蚀损化效应及加固保护试验研究".西安建筑科技大学学报. 自然科学版 47.4(2015):555-559.