Electronic Resource
Nanosilica Grout Permeation in Sand: Experimental Investigation and Modeling
| العنوان: | Nanosilica Grout Permeation in Sand: Experimental Investigation and Modeling |
|---|---|
| المؤلفون: | Boschi, K, Di Prisco, C, Grassi, D, Modoni, G, Salvatore, E, Boschi K., Di Prisco C. G., Grassi D., Modoni G., Salvatore E. |
| بيانات النشر: | American Society of Civil Engineers (ASCE) country:US 2024 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | Low-pressure injection of nanosilica aqueous suspensions is often adopted to either waterproof or increase the liquefaction resistance of granular soils. The basic principle behind this ground improvement technique consists in filling the soil pores with a low-viscosity fluid that changes its consistency with time, first into a gel, then into a solid. From an application point of view, the simulation of the time-dependent permeation process is crucial to relate the in situ distance covered by the grout to the operational parameters. A comprehensive investigation was performed, combining laboratory experiments with theoretical approaches, to characterize the phenomenon and then derive predictive relations useful for designing treatment executions. The time-dependent rheological properties of different nanosilica aqueous suspensions were first quantified by means of rheometric tests, then described with Bingham's law. Grout permeation in granular media was then simulated by suitably modifying Darcy's law to incorporate the temporal evolution of Binghamian grout rheology. After validating the modified Darcy's law employment for nanosilica grout flows with respect to laboratory experimental data, simplified analytical equations, capable of predicting the temporal evolution of the distance covered in situ by the grout and the flow rate-injection pressure relation, are provided. |
| مصطلحات الفهرس: | Ground improvement, Permeation grouting, Rheological propertie, Seepage, Time dependence, info:eu-repo/semantics/article |
| URL: | info:eu-repo/semantics/altIdentifier/wos/WOS:001105156400012 volume:150 issue:1 journal:JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING |
| الاتاحة: | Open access content. Open access content info:eu-repo/semantics/closedAccess |
| ملاحظة: | STAMPA English |
| Other Numbers: | ITBAO oai:boa.unimib.it:10281/505039 10.1061/JGGEFK.GTENG-11436 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85176580987 1456739689 |
| المصدر المساهم: | BICOCCA OPEN ARCH From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1456739689 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |