Relationship Between Mechanical Properties and Fiber Mixture Ratio in Fiber-Reinforced Sand

Nozoe, Shigeaki; Kasai, Yoshio; Kaneko, Kenji; Matsui, Kazumi; Kumagai, Koji

doi:10.5030/jcigsjournal.27.127

Cited by 2 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, researchers have investigated the effects of various fibers on the shear strength of sand [5][6][7][8][9]. They have analyzed the impact of factors such as grain size [10], moisture content [10][11][12], relative density [13], fiber aspect ratio [14], fiber content [15][16][17], fiber distribution orientation [18][19][20][21], and stress paths [22] using triaxial tests or direct shear tests [23,24]. The results of these tests have indicated that higher compactness leads to a larger shear modulus in sand with fibers.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Analysis of Palm-Fiber-Reinforced Sand through Triaxial Tests

et al. 2023

View full text Add to dashboard Cite

Triaxial tests were employed to investigate palm-fiber-reinforced sand under consolidated drained conditions in this study. Sixteen series of triaxial tests were carried out to investigate the properties of palm-fiber-reinforced sand. One series of pure sand was also employed for comparison. The deviator stress, stress path, shear strength, volume change, void ratio, and enhanced coefficient of fiber-reinforced sand were studied with different fiber lengths varying from 8 mm to 20 mm and fiber contents varying in mass from 0.3% to 0.9%. The test results indicate that palm fibers were beneficial for enhancing the shear strength of the sand. Compared to the peak shear strength increase of about 10% to 20%, the critical shear strength increased much more, by a little over 100%. Therefore, the fibers played a key role in enhancing the critical shear strength of the sand but not the peak shear strength of the sand. The addition of fiber to sand resulted in prolongation of the axial strain required to reach the critical void ratio and improved the sand’s ability to resist larger deformations, enhancing its toughness. Furthermore, the critical shear strength of the sand was positively correlated with both fiber content and fiber length, and the axial strain required to reach the critical shear strength increased with increasing fiber content and length. This study provides valuable experimental data and serves as a reference for temporary reinforcement in geotechnical engineering.

show abstract