Study on the Effect of Fiber Dosage on the Strength of Microbial Reinforced Aeolian Sand
In order to enhance the effectiveness of microbial curing of aeolian sand,the aeolian sand modification method of fiber reinforcement combined with MICP curing was further explored.The in-fluence law of different mass mixing ratios of fibers"m",with m of 0%,0.2%,0.4%,0.6%,and 0.8%,on the strength of microbial reinforced aeolian sand was investigated by carrying out the un-confined compressive test,and the enhancement mechanism of fiber reinforcement combined with MICP curing on the strength of aeolian sand was analyzed.The results show that the incorporation of polypropylene fibers significantly enhances the unconfined compressive strength(UCS)of MICP ce-mented aeolian sand specimens when the fiber dosage is low.The maximum unconfined compressive strength of 4.77 MPa is achieved when the fiber dosage is 0.4%.However,when the fiber dosage is greater than 0.4%,the unconfined compressive strength does not increase but decrease.
万方数据
维普
