|Table of Contents|

Experimental study on physical and mechanical properties of rock-like materials based on orthogonal design(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2025年06期
Page:
211-222
Research Field:
岩土工程
Publishing date:

Info

Title:
Experimental study on physical and mechanical properties of rock-like materials based on orthogonal design
Author(s):
XIA Mengcan1;  LU Huiyu2;  YANG Xiaohua1;  SUN Weifeng3; 4; 5;  LITIFU Wayiti1; 6
Keywords:
geotechnics;  similar material;  orthogonal experimental design;  model test;  shear strength;  modulus of elasticity
PACS:
TU452
DOI:
10.19815/j.jace.2024.10064
Abstract:
In order to determine the reasonable proportion of similar materials required for soft and hard interlayered rocky slope model test of a highway, based on the method of orthogonal experimental design, barite powder and quartz sand were selected as aggregates, loess as plasticizer and cement as binder, 32 sets of proportioning schemes were designed, and the tests of density, straight shear and uniaxial compression were carried out, then the influence law of each factor on the parameters of density, modulus of elasticity and uniaxial compression were analyzed using the extreme deviation method, the variance method and illustrative analysis diagram. The results show that the density of similar materials ranges from 2.05 g·cm-3 to 2.51 g·cm-3, the cohesive force ranges from 33.28 kPa to 603.22 kPa, the angle of internal friction ranges from 28.81° to 56.23°, and the modulus of elasticity ranges from 13.2 MPa to 310.2 MPa. With the increase of the content of barite powder in aggregate, the density of similar materials increases, and the internal friction angle increases first and then decreases. The cohesion and modulus of elasticity increase with the increase of cement content in the mixture, while the increase of loess content will reduce the density and modulus of elasticity. According to the experimental analysis, the mixture ratios of barite powder, quartz sand, loess, cement and water are 70:15:10:5:15 and 50:10:40:15 can be used as the ideal ratio of hard rock and soft rock in the simulation model test. The research results can provide some reference for future rock slope model test.

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Last Update: 2025-11-25