Influence of root suction on tensile strength of Chrysopogon zizanioides roots and its implication on bio-slope stabilization

doi:10.1007/s11629-018-5134-8

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2019 > Vol16 No.2

	Influence of root suction on tensile strength of Chrysopogon zizanioides roots and its implication on bio-slope stabilization
	Mahannopkul, Krairoj; Jotisankasa, Apiniti
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2019
卷号	16 期号:2 页码:275-284
关键词	Root tensile strength Bio-slope stabilization Suction Vetiver Chrysopogon zizanioides Root reinforcement
ISSN号	1672-6316
DOI	10.1007/s11629-018-5134-8
文献子类	Article
英文摘要	Root tensile strength is an important factor controlling the performance of bio-slope stabilization works. Due to evapotranspiration and climate factors, the root moisture content and its suction can vary seasonally in practice and may not equal soil suction. The influences of suction and root moisture contents were investigated on Chrysopogon zizanioides (vetiver grass) root tensile strength. The root specimens were equilibrated with moist air in different suction conditions (0, 10, 20, and 50 kPa), prior to root tension tests. The root-water characteristic curve or relationship between root moisture and suction, was determined. The increase in suction resulted in decreased tensile strengths of the grass roots, particularly those with diameter of about 0.2 mm, which constituted 50.7% of all roots. For 1 mm roots, the tensile strength appeared to be unaffected by suction increase. The average root tensile strengths were used to estimate the root cohesion in slope stability analysis to find variation of safety factors of a bioengineered slope in different suction conditions. The analysis showed that the critical condition of slope with the lowest factor of safety would happen when the soil suction was zero and the root suction was high. Such condition may occur during a heavy rain period after a prolonged drought.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000458657000003
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46427]
专题	Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.2
推荐引用方式 GB/T 7714	Mahannopkul, Krairoj,Jotisankasa, Apiniti. Influence of root suction on tensile strength of Chrysopogon zizanioides roots and its implication on bio-slope stabilization[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(2):275-284.
APA	Mahannopkul, Krairoj,&Jotisankasa, Apiniti.(2019).Influence of root suction on tensile strength of Chrysopogon zizanioides roots and its implication on bio-slope stabilization.JOURNAL OF MOUNTAIN SCIENCE,16(2),275-284.
MLA	Mahannopkul, Krairoj,et al."Influence of root suction on tensile strength of Chrysopogon zizanioides roots and its implication on bio-slope stabilization".JOURNAL OF MOUNTAIN SCIENCE 16.2(2019):275-284.