Astuto, Giuseppe (2021) BIO-INDUCED PARTIAL SATURATION AS A LIQUEFACTION MITIGATION TECHNIQUE. [Tesi di dottorato]
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| Item Type: | Tesi di dottorato |
|---|---|
| Resource language: | English |
| Title: | BIO-INDUCED PARTIAL SATURATION AS A LIQUEFACTION MITIGATION TECHNIQUE |
| Creators: | Creators Email Astuto, Giuseppe giuseppe.astuto@unina.it |
| Date: | 2021 |
| Number of Pages: | 195 |
| Institution: | Università degli Studi di Napoli Federico II |
| Department: | Strutture per l'Ingegneria e l'Architettura |
| Dottorato: | Ingegneria strutturale, geotecnica e rischio sismico |
| Ciclo di dottorato: | 33 |
| Coordinatore del Corso di dottorato: | nome email Rosati, Luciano rosati@unina.it |
| Tutor: | nome email Flora, Alessandro UNSPECIFIED Bilotta, Emilio UNSPECIFIED |
| Date: | 2021 |
| Number of Pages: | 195 |
| Keywords: | Liquefaction, Induced Partial Saturation, Monitoring Techniques |
| Settori scientifico-disciplinari del MIUR: | Area 08 - Ingegneria civile e Architettura > ICAR/07 - Geotecnica |
| Date Deposited: | 25 Apr 2021 19:28 |
| Last Modified: | 07 Jun 2023 10:24 |
| URI: | http://www.fedoa.unina.it/id/eprint/14037 |
Collection description
The present work aims to the development of a bio-Induced Partial Saturation (bio IPS) technique able to generate gas bubbles within the pores of the soil and, at the same time, to the development of a reliable monitoring technique. Starting from the identification and isolation of specific microorganisms able to generate gas bubbles, the work aims first at evaluating the capability of the selected microorganisms to nucleate bubbles. Then, the environmental compatibility of the metabolism's products is investigated by performing preliminary chemical and biological tests, in order to verify the applicability of the technique. Successively, with the aim to quantify the amount of generated gas, desaturation tests are carried out for different experimental conditions, monitoring at the same time environmental parameters of interest as well. Once the nucleation process has been widely explored, and the environmental compatibility has been ensured, the experimental setup has been finally focused on possible monitoring techniques able to control and verify the degrees of saturation achieved with the IPS technology. Basically, two possible monitoring parameters have been investigated, i.e. electrical resistivity and P-waves velocity. Their sensitivity to the degree of saturation of a soil will be analysed in detail as it follows, showing that such parameters are well suited to quantify the desaturation level achieved with the bio-IPS technique and, on the other hand, that a delicate interpretation of the data must to be taken into account. It will be highlighted that a combination of the two technologies is likely the best possible monitoring solution.
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