Use of Nanosilica for Increasing Dune Erosion Resistance during a Sea Storm
Dune recovery interventions that integrate natural, sustainable, and soft solutions have become increasingly popular in coastal communities. In the present study, the reliability of an innovative non-toxic colloidal silica-based solution for coastal sand dunes has been verified for the first time by...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-06-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/9/6/620 |
| _version_ | 1797531535626207232 |
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| author | Elisa Leone Nobuhisa Kobayashi Antonio Francone Samuele De Bartolo Davide Strafella Felice D’Alessandro Giuseppe Roberto Tomasicchio |
| author_facet | Elisa Leone Nobuhisa Kobayashi Antonio Francone Samuele De Bartolo Davide Strafella Felice D’Alessandro Giuseppe Roberto Tomasicchio |
| author_sort | Elisa Leone |
| collection | DOAJ |
| description | Dune recovery interventions that integrate natural, sustainable, and soft solutions have become increasingly popular in coastal communities. In the present study, the reliability of an innovative non-toxic colloidal silica-based solution for coastal sand dunes has been verified for the first time by means of laboratory experiments. An extensive experimental campaign aimed at studying the effectiveness of the use of nanosilica has been conducted in the 2D wave flume of the EUMER laboratory at the University of Salento (Italy). The study was first based on a horizontal seabed and then a cross-shore beach-dune profile was drawn similar to those generally observed in nature. Detailed measurements of wave characteristics and observed bed and cross-shore beach-dune profiles were analyzed for a wide range of wave conditions. In both cases, two sets of experiments were carried out. After the first set of experiments performed resembling the native conditions of the models composed with natural sand, the effects of the injection of the mineral colloidal silica-based grout were investigated. The observations show that mineral colloidal silica increases the mechanical strength of non-cohesive sediments reducing the volume of dune erosion, thus improving the resistance and longevity of the beach-dune system. |
| first_indexed | 2024-03-10T10:45:07Z |
| format | Article |
| id | doaj.art-a3a3fd6313044056961707484409c869 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T10:45:07Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-a3a3fd6313044056961707484409c8692023-11-21T22:40:30ZengMDPI AGJournal of Marine Science and Engineering2077-13122021-06-019662010.3390/jmse9060620Use of Nanosilica for Increasing Dune Erosion Resistance during a Sea StormElisa Leone0Nobuhisa Kobayashi1Antonio Francone2Samuele De Bartolo3Davide Strafella4Felice D’Alessandro5Giuseppe Roberto Tomasicchio6Department of Engineering for Innovation, University of Salento, EUMER Campus Ecotekne, Via Monteroni, 73100 Lecce, ItalyCenter for Applied Coastal Research, University of Delaware, Newark, DE 19716, USADepartment of Civil, Environmental, Land, Construction and Chemistry (DICATECh), Polytechnic of Bari, Via Orabona 4, 70125 Bari, ItalyDepartment of Engineering for Innovation, University of Salento, EUMER Campus Ecotekne, Via Monteroni, 73100 Lecce, ItalyDepartment of Engineering for Innovation, University of Salento, EUMER Campus Ecotekne, Via Monteroni, 73100 Lecce, ItalyDepartment of Environmental Science and Policy, University of Milan, Via Celoria 2, 20133 Milano, ItalyDepartment of Engineering for Innovation, University of Salento, EUMER Campus Ecotekne, Via Monteroni, 73100 Lecce, ItalyDune recovery interventions that integrate natural, sustainable, and soft solutions have become increasingly popular in coastal communities. In the present study, the reliability of an innovative non-toxic colloidal silica-based solution for coastal sand dunes has been verified for the first time by means of laboratory experiments. An extensive experimental campaign aimed at studying the effectiveness of the use of nanosilica has been conducted in the 2D wave flume of the EUMER laboratory at the University of Salento (Italy). The study was first based on a horizontal seabed and then a cross-shore beach-dune profile was drawn similar to those generally observed in nature. Detailed measurements of wave characteristics and observed bed and cross-shore beach-dune profiles were analyzed for a wide range of wave conditions. In both cases, two sets of experiments were carried out. After the first set of experiments performed resembling the native conditions of the models composed with natural sand, the effects of the injection of the mineral colloidal silica-based grout were investigated. The observations show that mineral colloidal silica increases the mechanical strength of non-cohesive sediments reducing the volume of dune erosion, thus improving the resistance and longevity of the beach-dune system.https://www.mdpi.com/2077-1312/9/6/620erosionvulnerabilityeco-recoverycolloidal nanosilicasediment transportlaboratory experiments |
| spellingShingle | Elisa Leone Nobuhisa Kobayashi Antonio Francone Samuele De Bartolo Davide Strafella Felice D’Alessandro Giuseppe Roberto Tomasicchio Use of Nanosilica for Increasing Dune Erosion Resistance during a Sea Storm Journal of Marine Science and Engineering erosion vulnerability eco-recovery colloidal nanosilica sediment transport laboratory experiments |
| title | Use of Nanosilica for Increasing Dune Erosion Resistance during a Sea Storm |
| title_full | Use of Nanosilica for Increasing Dune Erosion Resistance during a Sea Storm |
| title_fullStr | Use of Nanosilica for Increasing Dune Erosion Resistance during a Sea Storm |
| title_full_unstemmed | Use of Nanosilica for Increasing Dune Erosion Resistance during a Sea Storm |
| title_short | Use of Nanosilica for Increasing Dune Erosion Resistance during a Sea Storm |
| title_sort | use of nanosilica for increasing dune erosion resistance during a sea storm |
| topic | erosion vulnerability eco-recovery colloidal nanosilica sediment transport laboratory experiments |
| url | https://www.mdpi.com/2077-1312/9/6/620 |
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