Experimental study of polyurethane foam reinforced soil used as a rock-like material

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In this study, polyurethane foam type thermoset polymerizing, due to chemical reaction between its liquid ingredients, was tested as binder after solidifying and then a rock-like material mixing with a sandy silt type soil was prepared. The uniaxial compressive strengths (UCSs) of polyurethane foam reinforced soil specimens were determined for different polyurethane ratios in the mixture. Additionally, a series of tests on slake durability, impact value, freezing-thawing resistance, and abrasion resistance of polyurethane reinforced soil (PRS) mixture was conducted. The UCS values over 3 MPa were measured from the PRS specimens. The testing results showed that treated soil can economically become a desirable rock-like material in terms of slake durability and resistances against freezing-thawing, impact effect and abrasion. As another characteristic of the rock-like material made with polyurethane foam, unit volume weight was found to be quite lower than those of natural rock materials.




Komurlu, E., & Kesimal, A. (2015). Experimental study of polyurethane foam reinforced soil used as a rock-like material. Journal of Rock Mechanics and Geotechnical Engineering, 7(5), 566–572. https://doi.org/10.1016/j.jrmge.2015.05.004

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