Mechanical properties and microstructure evolution of two ecological slope-protection materials under dry-wet cycles
文献类型：期刊论文
| 作者 | Ma, Yangfan2; Bao, Han2; Yan, Changgen2; Lan, Hengxing3,4; Peng, Jianbing4; Zheng, Han1; Song, Zhanting2; Liu, Changqing2 |
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 416页码:16 |
| ISSN号 | 0959-6526 |
| 关键词 | Loess slope Ecologically protective material Dry-wet cycle Property evolution Shear band |
| DOI | 10.1016/j.jclepro.2023.137833 |
| 通讯作者 | Bao, Han(baohan@chd.edu.cn) ; Yan, Changgen(ycg@chd.edu.cn) |
| 英文摘要 | Owing to the occurrence of rain and heat during the same period in the Loess Plateau, the strong dry-wet cycle results in shallow damage such as erosion. As a result, applying new ecological protection technologies has become important in solving this problem. In this study, polypropylene fiber and guar gum were mixed with loess in a certain proportion to form two kinds of slope ecological protection materials, i.e., polypropylene fiber reinforced soil (PFS) and guar gum mixed soil (GGS). Sixteen dry-wet cycle tests were carried out on the two slope protection materials, and the shear mechanical tests were conducted on the samples after cycling. On this basis, the microstructure evolution characteristics of the samples were observed by scanning electron micro-scope. Results showed that the mechanical properties of the two slope protection materials deteriorated after 16 dry-wet cycles. Among them, the c and & phi; of PFS under the three levels of water content decreased by an average of 21.3% and 8.9%, respectively, whereas GGS decreased by 55.8% and 21.7%, respectively. Moreover, the mechanical deterioration characteristics of the two slope materials showed strong unity with their internal microstructure. The field tests of the two slope protection materials both performed good ecological protection effect, and the deterioration process was in good agreement with the laboratory phenomena. The microscopic action mechanism inside the material was closely related to the macroscopic performance. Polypropylene fiber can act as a "bridge" among soil particles to prevent the development of cracks, and guar gum and its hydration products can enhance the cementation among soil particles. This study could provide reference for further combining the two materials reasonably, using their respective advantages and improving the ecological pro-tection effect of loess slopes. |
| WOS关键词 | POLYPROPYLENE FIBER ; GUAR GUM ; SHEAR-STRENGTH ; DIVERSE APPLICATIONS ; CRACKING BEHAVIOR ; LOESS PLATEAU ; EPOXY-RESIN ; SOIL ; CLAY ; REINFORCEMENT |
| 资助项目 | National Natural Science Foundation of China[42041006] ; National Natural Science Foundation of China[32071586] ; National Natural Science Foundation of China[42177142] ; National Natural Science Foundation of China[41790443] ; Key Research and Development Program of Shaanxi ; Young Talent Fund of Association for Science and Technology in Shaanxi, China[300102212213] ; Fundamental Research Funds for the Central Universities, CHD[300102293207] ; Fundamental Research Funds for the Central Universities, CHD[2023-YBSF-486] ; [20220707] |
| WOS研究方向 | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:001041924000001 |
| 资助机构 | National Natural Science Foundation of China ; Key Research and Development Program of Shaanxi ; Young Talent Fund of Association for Science and Technology in Shaanxi, China ; Fundamental Research Funds for the Central Universities, CHD |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/196281]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Bao, Han; Yan, Changgen |
| 作者单位 | 1.Chang An Univ, Sch Environm Sci & Engn, Key Lab Subsurface Hydrol & Ecol Effect Arid Reg, Minist Educ, Xian 710054, Peoples R China 2.Chang An Univ, Sch Highway, Xian 710064, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 4.Chang An Univ, Sch Geol Engn & Geomat, Xian 710064, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Yangfan,Bao, Han,Yan, Changgen,et al. Mechanical properties and microstructure evolution of two ecological slope-protection materials under dry-wet cycles[J]. JOURNAL OF CLEANER PRODUCTION,2023,416:16. |
| APA | Ma, Yangfan.,Bao, Han.,Yan, Changgen.,Lan, Hengxing.,Peng, Jianbing.,...&Liu, Changqing.(2023).Mechanical properties and microstructure evolution of two ecological slope-protection materials under dry-wet cycles.JOURNAL OF CLEANER PRODUCTION,416,16. |
| MLA | Ma, Yangfan,et al."Mechanical properties and microstructure evolution of two ecological slope-protection materials under dry-wet cycles".JOURNAL OF CLEANER PRODUCTION 416(2023):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
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