Influence of Submergence on Stabilization of Loess in Shaanxi Province by Adding Fly Ash
| Autor: | Sheng-Nan Li, Ya-Sheng Luo, Samnang Phoak, Qian Yin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0211 other engineering and technologies
Compaction 02 engineering and technology Atterberg limits lcsh:Technology lcsh:Chemistry Stress (mechanics) Loess 021105 building & construction General Materials Science Geotechnical engineering lcsh:QH301-705.5 Instrumentation Water content 021101 geological & geomatics engineering Fluid Flow and Transfer Processes submergence lcsh:T Process Chemistry and Technology General Engineering California bearing ratio loess lcsh:QC1-999 unconfined compressive strength (UCS) non-submergence Computer Science Applications stabilization California bearing ratio (CBR) Compressive strength fly ash lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Fly ash Environmental science lcsh:Engineering (General). Civil engineering (General) lcsh:Physics |
| Zdroj: | Applied Sciences Volume 9 Issue 1 Applied Sciences, Vol 9, Iss 1, p 68 (2018) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app9010068 |
| Popis: | In this study, the influence of fly ash (FA) content (0%, 10%, 20%, and 30%) on the alteration in the physical and mechanical parameters of loess is investigated. The influences of curing time (0, 14, and 28 days) and submergence and non-submergence conditions are analyzed as well. Analysis considers the variation in Atterberg limits (liquid limit, plastic limit, and plasticity index), compaction parameters (optimum moisture content (OMC), and maximum dry density (MDD)), unconfined compressive strength (UCS) stress, UCS strain, California bearing ratio (CBR) value, and swell potential. Results show that the application of FA-stabilized loess (FASL) is effective. Specifically, the MDD decreases and the OMC increases, the UCS stress increases and the UCS strain decreases, the CBR value improves and the swell potential declines, but Atterberg limits are insignificantly changed by the increase in the FA ratio compared with those of untreated loess. The UCS stress and CBR value are improved with the increase in curing time, whereas the UCS strain is negligible. FASL under submergence condition plays an important role in improving the effect of FA on the UCS stress and CBR value compared with that under non-submergence condition. The UCS stress and CBR value are more increased and more decreased than the UCS strain in submerged samples. Therefore, the application of FASL in flood areas is important for obtaining sustainable construction materials and ensuring environmental protection. |
| Databáze: | OpenAIRE |
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