EVALUATING MECHANICAL STRENGTH OF PEAT SOIL TREATED BY FIBER INCORPORATED BIO-CEMENTATION

Peat soil is an accumulation of partially decayed vegetation, formed under the condition nearly permanent water saturation, which makes high moisture and compressibility as two main features peat. In recent years, lack construction lands diverts researchers' attention to make use marginal grounds, like peatland, after some improvements. The past decade has witnessed a growing interest in microbial induced carbonate precipitation (MICP) due its reliability, broad application, potential contribution sustainable green development. This study primary aims: (i) investigating feasibility effectiveness MICP peat combined with bamboo fiber reinforcement, (ii) ascertaining mechanism incorporated MICP. Bamboo possesses unparalleled advantages owing fast growth ability survive diverse climates. differs from previous researches native bacteria isolated soil, while most them were conducted using exogenous bacteria, might pose threat regarding adaption pollution. Different concentrations cementation resources (1-3 mol/L) proportion fibers (0-50%) studied, each case was well designed. Treated samples subjected fall cone test estimate undrained shear strength at certain time intervals. results revealed that higher content gained than others did, whereas initial could reduce strength. Microscale observations also performed on treated clarify fiber.