Reinforcement Mechanism and Erosion Resistance of Loess Slope Using Enzyme Induced Calcite Precipitation Technique

The disaster of loess slope seriously threatened the safety people and property. Enzyme Induced Calcite Precipitation (EICP) was demonstrated as an environmentally friendly soil improvement method. However, few studies have focused on effect EICP slopes. In this study, a series tests were conducted to investigate added either basalt fiber (BF) or polyvinyl acetate emulsion (PVAC) solution erosion resistance results showed that all EICP, EICP-BF, EICP-PVAC treatments could improve surface strength (SS). addition 50 g/L PVAC achieved high SS because network structure formed by promoted affixation CaCO3. thickness crust layer decreased with increasing BF content concentration. With number treatment cycles, CaCO3 increased progressively, but increase rate decreased. For rainfall erosion, time until occurred delayed stability improved for slopes treated EICP-PVAC. EICP-0.5% BF, EICP-30 PVAC, EICP-50 attributed stable spatial precipitation additional cementation provided 0.5% effectively inhibited development cracks in after dry–wet cycles. accumulative loss weight various methods gradually. Among methods, cycles had less This study guidance prevention.