干旱区生态环境知识资源中心(Arid): A Clay-Based Geopolymer in Loess Soil Stabilization

Arid

DOI	10.3390/app10072608
	A Clay-Based Geopolymer in Loess Soil Stabilization
	Hanegbi, Nadav; Katra, Itzhak
通讯作者	Katra, I
来源期刊	APPLIED SCIENCES-BASEL
EISSN	2076-3417
出版年	2020
卷号	10 期号:7
英文摘要	Soil erosion has environmental and socioeconomic significances. Loess soils cover about 10% of the global land area. Most of these soils are subjected to increased land uses such as unpaved roads, which increase soil destruction and dust emission to the atmosphere. There is a significant interest in applications for dust control and soil stabilization. Application of geopolymers may significantly reduce environmental impacts. This study examines the use of a metakaolin-based geopolymer for dust control and soil stabilization in a semi-arid loess soil. The application of the geopolymer for dust control in comparison with common products (brine, bitumen, polyvinyl acetate-PVA) resulted in no dust emission. As a soil stabilizer, the geopolymer tested in this study provides remarkably good results in the tensile test. The most successful composition of the geopolymer, which is activation solution of sodium silicate and sodium hydroxide (NaOH) together with an addition of 30% metakaolin, obtained soil strength of 23,900 N after 28 days. The attempt to replace NaOH with lime (CaO) in the activation solution was far inferior to the original composition. There is a strong potential to develop natural soil stabilizers from a mineral base that even surpass their capabilities over existing synthetic stabilizers.
英文关键词	loess metakaolin dust control geopolymer soil erosion
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000533356200407
WOS关键词	DUST EMISSION ; LIME ; SIZE
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
来源机构	Ben-Gurion University of the Negev
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324460
作者单位	[Hanegbi, Nadav; Katra, Itzhak] Ben Gurion Univ Negev, Dept Geog & Environm Dev, IL-8410501 Beer Sheva, Israel
推荐引用方式 GB/T 7714	Hanegbi, Nadav,Katra, Itzhak. A Clay-Based Geopolymer in Loess Soil Stabilization[J]. Ben-Gurion University of the Negev,2020,10(7).
APA	Hanegbi, Nadav,&Katra, Itzhak.(2020).A Clay-Based Geopolymer in Loess Soil Stabilization.APPLIED SCIENCES-BASEL,10(7).
MLA	Hanegbi, Nadav,et al."A Clay-Based Geopolymer in Loess Soil Stabilization".APPLIED SCIENCES-BASEL 10.7(2020).