气候变化领域集成服务门户(CCPortal): Improving the Mechanical Properties of Red Clay Using Xanthan Gum Biopolymer

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DOI	10.1155/2021/1535772
	Improving the Mechanical Properties of Red Clay Using Xanthan Gum Biopolymer
	Wang, Lina; Weng, Zhiyu; Liu, Qiang; Wang, Tianliang; Pan, Xuemin; Li, Guoyu; Wang, Zhiliang
通讯作者	Wang, TL (通讯作者)，Shijiazhuang Tiedao Univ, State Key Lab Mech Behav & Syst Safety Traff Engn, Shijiazhuang 050043, Hebei, Peoples R China. ; Wang, TL (通讯作者)，Shijiazhuang Tiedao Univ, Minist Educ, Key Lab Rd & Railway Engn Safety Control, Shijiazhuang 050043, Hebei, Peoples R China.
发表日期	2021
ISSN	1687-9422
EISSN	1687-9430
卷号	2021
英文摘要	The traditional treatment of red clay using inorganic materials leads to many serious environmental problems. The study investigates the mechanical properties of red clay using an environmental-friendly material-xanthan gum-through confined compression, direct shear, and scanning electron microscope tests. At the macroscale, xanthan gum content and curing age had obvious effects on the compressibility, presenting the treated red clay was in the category of low compressibility which gradually increased when xanthan gum content exceeded 1.5%. The xanthan gum content and curing age also had significant influences on the cohesion but not on the internal friction angle. The shear strength of red clay can be improved by increasing the cohesion without obviously changing the friction characteristics. After curing for 28 days, the cohesion and internal friction angle of 2.0% xanthan gum-treated soil were effectively improved to 170.44 kPa and 20.56 degrees, which were increased by 69.79% and 9.36 degrees, respectively, compared with untreated red clay. Microscopic analysis indicated that the strengthening mechanism by xanthan gum was derived from changing the arrangement characteristics of soil particles and forming hard biopolymer-red clay matrices. The proper xanthan gum can effectively wrap clay particles and fill pore spaces. However, the extensive stacking of gels would also reduce the effective connection of clay particles and produce local weak points in the soil, resulting in attenuation of mechanical properties. This study enriches the treatment measure of red clay and provides beneficial experiences for biopolymer application on special clay.
关键词	SOIL STRENGTH STABILIZATION BEHAVIOR GELATION SAND
语种	英语
WOS研究方向	Polymer Science
WOS类目	Polymer Science
WOS记录号	WOS:000741074900001
来源期刊	INTERNATIONAL JOURNAL OF POLYMER SCIENCE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254978
作者单位	[Wang, Lina; Liu, Qiang] Powerchina Kunming Engn Corp Ltd, Kunming 650051, Yunnan, Peoples R China; [Wang, Lina; Weng, Zhiyu; Pan, Xuemin] Yunnan Agr Univ, Sch Construct Engn, Kunming 650201, Yunnan, Peoples R China; [Wang, Lina; Wang, Tianliang] Shijiazhuang Tiedao Univ, State Key Lab Mech Behav & Syst Safety Traff Engn, Shijiazhuang 050043, Hebei, Peoples R China; [Weng, Zhiyu] Huaqiao Univ, Fujian Res Ctr Tunneling & Urban Underground Spac, Xiamen 361021, Peoples R China; [Wang, Tianliang] Shijiazhuang Tiedao Univ, Minist Educ, Key Lab Rd & Railway Engn Safety Control, Shijiazhuang 050043, Hebei, Peoples R China; [Li, Guoyu] Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Wang, Zhiliang] Kunming Univ Sci & Technol, Fac Civil Engn & Mech, Kunming 650500, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Wang, Lina,Weng, Zhiyu,Liu, Qiang,et al. Improving the Mechanical Properties of Red Clay Using Xanthan Gum Biopolymer[J]. 中国科学院西北生态环境资源研究院,2021,2021.
APA	Wang, Lina.,Weng, Zhiyu.,Liu, Qiang.,Wang, Tianliang.,Pan, Xuemin.,...&Wang, Zhiliang.(2021).Improving the Mechanical Properties of Red Clay Using Xanthan Gum Biopolymer.INTERNATIONAL JOURNAL OF POLYMER SCIENCE,2021.
MLA	Wang, Lina,et al."Improving the Mechanical Properties of Red Clay Using Xanthan Gum Biopolymer".INTERNATIONAL JOURNAL OF POLYMER SCIENCE 2021(2021).