In this research, the concept of correction coefficients of freezing-thawing cycles on clay static strength, cohesion and internal friction angles is proposed, and the change patterns, correction curves and regressive formulae of clay static strength, cohesion and internal friction angles under freezing...
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1.Based on thegeneral tri-axial testresults the nonlinear relationship formula between suction strength and saturated degree is presented.以马兰黄土为例 ,对非饱和黄土的强度特性进行了常规三轴试验研究 ,根据试验结果 ,提出了非饱和黄土的吸力强度与饱和度之间的非线性关系表达式 ,并证实了非饱和黄土抗剪强度...
In conclusion, the triaxial test shows that with the increase of confining pressure, increasing the number of cracks in the rock will induce shear cracks in the rock, making the macro fracture surface of the rock show shear failure, which is the same as the test results. In Figs. 18 and...
According to formula (1), the fitting results are shown in Figure 4. Figure 4 Open in figure viewerPowerPoint Relationship between confining pressures and peak stress. It can be seen from Figure 4 that the correlation coefficient R2 of the triaxial compression test results fitted is 0.999, ...
test, although we know that the true uniaxial condition in structures is extremely rare. In practice, many concrete structures such as shear wall, spiral columns and the node of building, nuclear reactor pressure container, etc are under multiaxial stress states. At the same time, with ...
(6), the formula is rewritten as follows:(7) Substituting Eqs. (4), (5) into Eq. (7), it is rewritten as follows:(8) Likewise, using the same deduction process from Eqs. (4), (5), (6), (7), (8), the observed strain is obtained as follows:(9) To understand the ...
To investigate the effect of graphene (G) on the triaxial mechanical characteristics of cement stabilized soil, a triaxial unconsolidated and undrained (UU) test was conducted on cement stabilized expansive soil (CES) and graphene-modified cement stabilized expansive soil (GCES) with 0.05%, 0.1%, ...
test, although we know that the true uniaxial condition in structures is extremely rare. In practice, many concrete structures such as shear wall, spiral columns and the node of building, nuclear reactor pressure container, etc are under multiaxial stress states. At the same time, with ...
failure and oblique shear failure. The maximum stress ratio combinations used in this test areσ1/fc,s = 0.2 andσ2/fc,s = 0.8. Whenσ1/σ3 ≤ 0.15 andσ2/σ3 > 0.15, the intermediate principal stress exceeds a certain threshold; the columnar splitting failure, that...