Evaluation of the Anti-Erosion Characteristics of an MICP Coating on the Surface of Tabia

doi:10.1061/(ASCE)MT.1943-5533.0003408

	Evaluation of the Anti-Erosion Characteristics of an MICP Coating on the Surface of Tabia
	Liu, Shiyu 1,2; Gao, Xinyu 2
刊名	JOURNAL OF MATERIALS IN CIVIL ENGINEERING
	2020-10-01
卷号	32 期号:10 页码:10
关键词	Tabia Weathering Microbially induced carbonate precipitation (MICP) Surface erosion control Durability
ISSN号	0899-1561
DOI	10.1061/(ASCE)MT.1943-5533.0003408
英文摘要	Most tabia sites exhibit accelerated decay rates caused by weathering. Weathering damage generally proceeds from the surface to the interior; thus, protecting the surface of tabia sites is an effective method to resist weathering. In this study, the microbially induced carbonate precipitation (MICP) technique is used to form an anti-erosion layer on the surface of tabia. Next, the applicability of MICP for tabia surface erosion control is examined in the laboratory via the static contact angle test, capillary water absorption test, Karsten tube test, durability test, acid resistance test, water vapor permeability (WVP) test, and color change test. Moreover, the effect of the concentration of bacteria and cementation reagent on the surface erosion control is analyzed. The test results show that MICP can significantly improve the water resistance of a soil sample by changing the microstructure of the surface. Higher concentrations of bacteria and cementation reagent allow the sediment layer to provide better protection; however, this effect is not linear. The concentration threshold reduces the positive effect of the bacterial concentration on the water resistance of the soil surface. The MICP protection layer offers favorable durability with little negative impact on the air permeability and color of the sample. The use of an MICP protection layer can effectively relieve the surface erosion of earthen sites. (c) 2020 American Society of Civil Engineers.
资助项目	National Natural Science Foundation of China[51478197] ; National Natural Science Foundation of China[51774147] ; Natural Science Foundation of Fujian Province[2019J01048]
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000587482500019
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25050]
专题	中科院武汉岩土力学所
通讯作者	Liu, Shiyu
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 2.Huaqiao Univ, Coll Civil Engn, Xiamen 361021, Peoples R China
推荐引用方式 GB/T 7714	Liu, Shiyu,Gao, Xinyu. Evaluation of the Anti-Erosion Characteristics of an MICP Coating on the Surface of Tabia[J]. JOURNAL OF MATERIALS IN CIVIL ENGINEERING,2020,32(10):10.
APA	Liu, Shiyu,&Gao, Xinyu.(2020).Evaluation of the Anti-Erosion Characteristics of an MICP Coating on the Surface of Tabia.JOURNAL OF MATERIALS IN CIVIL ENGINEERING,32(10),10.
MLA	Liu, Shiyu,et al."Evaluation of the Anti-Erosion Characteristics of an MICP Coating on the Surface of Tabia".JOURNAL OF MATERIALS IN CIVIL ENGINEERING 32.10(2020):10.