Knowledge Resource Center for Ecological Environment in Arid Area
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
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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). |
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