Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Soil-Strength Enhancements from Polymer-Infused Roots
This research investigates the use of polymer-infused roots for soil-improvement applications. By infusing polymer through the easily accessible above-surface plant stems, polymer-infused roots can be created without subsurface excavations. Evaluation of this technique involves identifying the improvements from polymer-infused roots by measuring in situ shear strength of soil using a vane shear apparatus and by measuring the tensile strength using split-tension tests in the laboratory. Roots of Ruellia squarrosa and Artemisia annua plants were infused with a mixture of epoxy resin and polyoxyalkylamine blend hardener. Compared with noninfused roots, polymer-infused roots provided an additional 22 kPa (28%) of shear strength for elastic silt and an additional 13.1 kPa (25%) of shear strength for low-plasticity clay with a corresponding 13.6-kPa (55%) increase in tensile strength for the low-plasticity clay. Acid hydrolysis testing was performed to ascertain the potential durability of the polymer-infused roots. The 4% plant material mass loss measured for the infused samples was significantly less than the 18% plant material mass loss for the noninfused samples, demonstrating the protective effect of the polymer infusion process.
Soil-Strength Enhancements from Polymer-Infused Roots
This research investigates the use of polymer-infused roots for soil-improvement applications. By infusing polymer through the easily accessible above-surface plant stems, polymer-infused roots can be created without subsurface excavations. Evaluation of this technique involves identifying the improvements from polymer-infused roots by measuring in situ shear strength of soil using a vane shear apparatus and by measuring the tensile strength using split-tension tests in the laboratory. Roots of Ruellia squarrosa and Artemisia annua plants were infused with a mixture of epoxy resin and polyoxyalkylamine blend hardener. Compared with noninfused roots, polymer-infused roots provided an additional 22 kPa (28%) of shear strength for elastic silt and an additional 13.1 kPa (25%) of shear strength for low-plasticity clay with a corresponding 13.6-kPa (55%) increase in tensile strength for the low-plasticity clay. Acid hydrolysis testing was performed to ascertain the potential durability of the polymer-infused roots. The 4% plant material mass loss measured for the infused samples was significantly less than the 18% plant material mass loss for the noninfused samples, demonstrating the protective effect of the polymer infusion process.
Soil-Strength Enhancements from Polymer-Infused Roots
Sauceda, Miguelangel (Autor:in) / Johnson, Drew W. (Autor:in) / Huang, Jie (Autor:in) / Bin-Shafique, Sazzad (Autor:in) / Sponsel, Valerie M. (Autor:in) / Appleford, Mark (Autor:in)
10.07.2013
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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