Modifying the mechanical properties of sand by using different hydrophobic conditions

Zhou, Zheng; Leung, Anthony Kwan

doi:10.1007/s11440-022-01482-z

Cited by 6 publications

(1 citation statement)

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“…After years of development, PFC2D has developed a more mature built-in bonding model, which is mainly used for soil-void structures or fine aggregate-asphaltvoid structures, while PFC3D is mainly used to build three-dimensional models considering the gradation and morphology of coarse aggregates in asphalt mixtures [11]. From 2000 to 2006, Jian Zhou et al [12] established the particle flow model for sandy soil and cohesive soil, respectively, based on the particle flow procedure by introducing different particle contact models, numerically simulated the laboratory strain tests of sandy soil and cohesive soil through the numerical model test of particle flow, and compared the stress-strain relationship curves of the particle flow specimens with those of the laboratory tests, which reproduced the stress-strain relationship of the sandy soil and cohesive soil specimens. From 2003 to 2016, Mingjing Jiang [13] carried out a numerical simulation of the plane biaxial test of cemented sandy soil and analyzed the macroscopic mechanical properties of cemented sandy soil, the damage formation law, and the effect of cementation content on the mechanical properties of sandy soil.…”

Section: Introductionmentioning

confidence: 99%

Strength Formation and Failure Mechanism Analysis of Cement-Stabilized Laterite Granules Based on Numerical Simulation

Zou,

Yang,

et al. 2023

Buildings

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The poor grading and significant differences in the mechanical properties of laterite granules in West Africa limit the application of this typical material in road structures. In this paper, the poorly graded laterite granule was blended with fine sand and stabilized with cement to improve the strength of laterite granules. An innovative combination of laboratory tests and numerical simulation analysis using the numerical simulation software PFC2D 5.0 was used to investigate the cement-stabilized laterite granule’s strength formation and failure mechanisms. Laboratory test results show that when the sand content is 40%, the grading curve is close to the maximum theoretical density lines (MTDLs), and the unconfined compressive strength of cement-stabilized laterite granules increased by 35.2% as the cement dosage increased from 2.5% to 5.0%. Numerical simulation tests show that the strength failure of cement-stabilized laterite granules is shear. The failure surface is tilted and through with the axial direction, and the compressive and tensile stresses between the particles cause the failure of the specimen. The simulation test results are close to the laboratory test results, and the deviation rate is less than 10%. It can guide the optimal grading design and strength prediction of cement-stabilized laterite granular materials and provides a basis for reducing laboratory tests and accurate design for such research in the future.

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Section: Introductionmentioning

confidence: 99%