Effectiveness of the anti-erosion of an MICP coating on the surfaces of ancient clay roof tiles

doi:10.1016/j.conbuildmat.2020.118202

	Effectiveness of the anti-erosion of an MICP coating on the surfaces of ancient clay roof tiles
	Liu, Shiyu 1,2; Wang, Runkai 1; Yu, Jin 1; Peng, Xingqian 3; Cai, Yanyan 1; Tu, Bingxiong 1
刊名	CONSTRUCTION AND BUILDING MATERIALS
	2020-05-20
卷号	243 页码:10
关键词	Ancient clay roof tile Weathering MICP Coating Durability
ISSN号	0950-0618
DOI	10.1016/j.conbuildmat.2020.118202
英文摘要	Rain erosion is one of the most important factors causing the weathering of ancient clay roof tiles. Weathering damage generally proceeds from the surface to the interior; thus, protecting tile surfaces 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 surfaces of tiles. Next, the applicability of MICP for tile surface erosion control is examined in the laboratory by the static contact angle test, capillary water absorption test, Karsten tube test, durability test, acid resistance test, water vapour permeability (WVP) test and colour change test. Moreover, the effect of the concentration of bacteria and cementation reagent on the surface erosion control is analysed. The test results show that MICP can significantly improve the water resistance of tiles 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 sample surface. The MICP protection layer offers favourable durability with little negative impact on the air permeability and colour of the sample. The use of an MICP protection layer can effectively relieve the weathering of ancient clay roof tiles. (C) 2020 Elsevier Ltd. All rights reserved.
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	ELSEVIER SCI LTD
WOS记录号	WOS:000527409700029
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24022]
专题	中科院武汉岩土力学所
通讯作者	Liu, Shiyu
作者单位	1.Huaqiao Univ, Coll Civil Engn, Xiamen 361021, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 3.Xiamen Inst Technol, Sch Architecture & Civil Engn, Xiamen 361021, Peoples R China
推荐引用方式 GB/T 7714	Liu, Shiyu,Wang, Runkai,Yu, Jin,et al. Effectiveness of the anti-erosion of an MICP coating on the surfaces of ancient clay roof tiles[J]. CONSTRUCTION AND BUILDING MATERIALS,2020,243:10.
APA	Liu, Shiyu,Wang, Runkai,Yu, Jin,Peng, Xingqian,Cai, Yanyan,&Tu, Bingxiong.(2020).Effectiveness of the anti-erosion of an MICP coating on the surfaces of ancient clay roof tiles.CONSTRUCTION AND BUILDING MATERIALS,243,10.
MLA	Liu, Shiyu,et al."Effectiveness of the anti-erosion of an MICP coating on the surfaces of ancient clay roof tiles".CONSTRUCTION AND BUILDING MATERIALS 243(2020):10.