Mechanical Behavior of Reinforced Soil by Continuous Threads

Mechanical Properties of Fiber-Reinforced Soil under Triaxial Compression and Parameter Determination Based on the Duncan-Chang Model

“…The effect of fiber incorporation on the mechanical properties of the fill showed that as the cohesion increased from 0 MPa to 0.11 MPa, the internal friction angle decreased from 38 • to 37.7 • . Compared with the change in the internal friction angle, the increase in cohesion was even more pronounced with fiber incorporation, which is consistent with References [7][8][9]22]. When the strain remained unchanged, the addition of fiber significantly increased the stress in the fill, indicating that fiber incorporation significantly enhanced the strength and stiffness of the fill, for an excellent reinforcement effect.…”

“…From triaxial tests, Machado et al [6] found that the stress-strain curve of fiber-reinforced garbage soil showed a strain-hardening characteristic, and the incorporation of fibers significantly improved the shear strength of the garbage soil. Kutara et al [7] investigated, through triaxial tests, the shear strength characteristics of continuous fiber-reinforced soil and their influencing factors and found that the fiber content had the most significant influence among the studied parameters and can substantially improve cohesion. You et al [8] ran triaxial tests to study the stress-strain characteristics and fiber reinforcement effect of expansive soil reinforced with basalt fiber and found that the stress-strain curve possessed strain-hardening characteristics, and a higher confining pressure led to higher strength, with an optimal fiber content of 0.4%.…”