干旱区生态环境知识资源中心(Arid): Improvement of Pavement Subgrade by Adding Cement and Fly Ash to Natural Desert Sand

Arid

DOI	10.3390/infrastructures6110151
	Improvement of Pavement Subgrade by Adding Cement and Fly Ash to Natural Desert Sand
	Amhadi, Talal S.; Assaf, Gabriel J.
通讯作者	Amhadi, TS (corresponding author), Univ Quebec, ETS, Dept Civil Engn & Construct, 1100 Notre Dame West, Montreal, PQ H3C, Canada.
来源期刊	INFRASTRUCTURES
EISSN	2412-3811
出版年	2021
卷号	6 期号:11
英文摘要	Soil characteristics are paramount to design pavements and to assess the economic viability of a road. In the desert, such as that found in southern Libya, the very poor quality of soils leads to important pavement distress such as cracks, rutting, potholes, and lateral shear failure on the edges. To improve the strength of desert sand, an innovative approach is proposed, consisting of adding manufactured sand, ordinary Portland cement (OPC), and fly ash (FA) as a binder. OPC and FA improve the characteristics of mixes of crushed fine aggregate (CFA) and natural desert sand (NDS). These results are based on a gradation of two sand sources to determine the particle distribution and X-ray fluorescence (XRF) to determine their chemical and physical properties, respectively. This research assesses the effect of cement and fly ash on the geotechnical behavior of two mixtures of fine desert and manufactured sands (30:70% and 50:50%). The mix composed of 26% of CFA, 62% of NDS, 5% of OPC, and 7% of FA shows optimal results in terms of strength, compaction, and bearing capacity characteristics.
英文关键词	cement fly ash pavement construction UCS soil stabilization CBR
类型	Article
语种	英语
开放获取类型	gold
收录类别	ESCI
WOS记录号	WOS:000726667400001
WOS关键词	STABILIZATION ; CONCRETE ; STRENGTH ; IMPACT ; SOILS
WOS类目	Construction & Building Technology ; Engineering, Civil ; Transportation Science & Technology
WOS研究方向	Construction & Building Technology ; Engineering ; Transportation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374323
作者单位	[Amhadi, Talal S.; Assaf, Gabriel J.] Univ Quebec, ETS, Dept Civil Engn & Construct, 1100 Notre Dame West, Montreal, PQ H3C, Canada
推荐引用方式 GB/T 7714	Amhadi, Talal S.,Assaf, Gabriel J.. Improvement of Pavement Subgrade by Adding Cement and Fly Ash to Natural Desert Sand[J],2021,6(11).
APA	Amhadi, Talal S.,&Assaf, Gabriel J..(2021).Improvement of Pavement Subgrade by Adding Cement and Fly Ash to Natural Desert Sand.INFRASTRUCTURES,6(11).
MLA	Amhadi, Talal S.,et al."Improvement of Pavement Subgrade by Adding Cement and Fly Ash to Natural Desert Sand".INFRASTRUCTURES 6.11(2021).