干旱区生态环境知识资源中心(Arid): Feasibility of protecting earthen sites with sticky rice and lime composite

Arid

DOI	10.1016/j.conbuildmat.2022.128449
	Feasibility of protecting earthen sites with sticky rice and lime composite
	Fan, Wenjun; Chen, Wenwu; Zhang, Qiyong; Wu, Guocheng
通讯作者	Chen, WW
来源期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
EISSN	1879-0526
出版年	2022
卷号	346
英文摘要	Earthen sites have important historical, artistic, social, cultural, and scientific values. However, due to the extreme natural environment, they have suffered serious damage. The sticky rice and lime composite is one of the most important technological inventions in Chinese architectural history, which is an alternative material for the protection of earthen sites. In the past, the mechanical and microscopic properties of sticky rice and lime composite as binding material have been discussed. However, these properties are not sufficient to evaluate the feasibility of protecting earthen sites with sticky rice and lime composite. In this study, 25 groups of soil samples were prepared at five different lime contents (i.e. 0%, 3%, 6%, 9% and 12% by dry weight of sample) and five different sticky rice contents (i.e. 0.0%, 0.5%, 1.0%, 1.5% and 2.0% by dry weight of sample), and several important characteristics of the samples such as drying shrinkage, colour difference, surface hardness, uncon-fined compressive strength (UCS), and water vapour permeability are investigated comprehensively. Scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP) were used to study the microstructure of samples. Then, the feasibility of protecting earthen sites with sticky rice and lime composite was systematically evaluated. The results indicate that the effectiveness of sticky rice and lime composite is better than that of their individual application. The optimal formula is 6% lime and 0.5% sticky rice for the protection of earthen sites when above indicators are compared. The surface fractal dimension builds bridges between microstructure and macroscopic properties of the soil with sticky rice and lime. Surface hardness and UCS are positively related to the surface fractal dimension, while water vapour permeability is negative related to the surface fractal dimension. This research further provides insights into the potential application of traditional Chinese inorga-nic-organic composite for protecting earthen sites in arid and semi-arid regions of northwest China.
英文关键词	Earthen sites Sticky rice Lime Colour difference Water vapour permeability Surface fractal dimension
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000862962500005
WOS关键词	SURFACE FRACTAL DIMENSION ; PORE STRUCTURE ; CONSOLIDATION ; MORTAR ; WATER ; SOIL ; SHRINKAGE ; MICROSTRUCTURE ; CONSERVATION ; CARBONATION
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392193
推荐引用方式 GB/T 7714	Fan, Wenjun,Chen, Wenwu,Zhang, Qiyong,et al. Feasibility of protecting earthen sites with sticky rice and lime composite[J],2022,346.
APA	Fan, Wenjun,Chen, Wenwu,Zhang, Qiyong,&Wu, Guocheng.(2022).Feasibility of protecting earthen sites with sticky rice and lime composite.CONSTRUCTION AND BUILDING MATERIALS,346.
MLA	Fan, Wenjun,et al."Feasibility of protecting earthen sites with sticky rice and lime composite".CONSTRUCTION AND BUILDING MATERIALS 346(2022).