Erosion testing on sloped ground treated with enzyme-induced carbonate precipitation
Erosion testing on sloped ground treated with enzyme-induced carbonate precipitation
Enzyme-induced carbonate precipitation (EICP) is a novel biogeotechnical soil improvement technique in which calcium carbonate is precipitated abiotically from the hydrolysis of urea catalysed by plant-derived urease enzyme. The EICP technique and solution application methods are in development to control soil erosion induced by rainfall. The paper presents the results of preliminary erosion tests on two EICP-treated and untreated soil plots on the slope of an earthen dam. The mobilised soil volume during simulated rainfall in the treated plot was approximately eight times smaller than in the untreated plot. Raking the soil surface prior to treatment helped reduce the solution runoff and increase solution percolation. Applying the treatment solution with two-step percolation prevented early precipitation and equipment clogging.
L. Rivera; P. Bandini
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
D - Current and new construction methods
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