Abstract
This paper presents experimental investigation for particles breakage for natural sand. The particle breakage was induced by subjecting the sample to one dimensional compression. Grain size analyses were performed before and after induced breakage. Thereafter, the sand shear strength parameters were assessed using direct shear box tests and the coefficient of permeability was assessed using constant head permeameter. Examining the obtained results revealed that the amount of breakage due to one dimensional compression was of order higher than the amount occurring during direct shear test. Peak shear strength parameters decreased with the particles breakage increasing. Moreover, dilation angle of shear strength pronouncedly decreases with the amount of particles breakage increasing. Crushing has obvious effect on the evaluated coefficient of permeability.
Highlights
Sand particles breakage represents one of the most important factors that are able to alter the mechanical properties of Sand through increasing the portion of fines
This paper presents experimental investigation for particles breakage for natural sand
Examining the obtained results revealed that the amount of breakage due to one dimensional compression was of order higher than the amount occurring during direct shear test
Summary
Sand particles breakage represents one of the most important factors that are able to alter the mechanical properties of Sand through increasing the portion of fines. Past researches have indicated that the angle of shearing resistance for granular materials undergoing crushing decreases as a consequence of particle crushing [18,19] conducted a ring shear tests on carbonate sand and reported that crushing of particles occurred without a loss of residual angle of internal friction. In this regards, the reported results give the impression that crushable granular materials experience a reduction in the internal friction angle as a consequence of particle breakage prior to achieving a constant value of shear strength. The results of the tests conducted on Aqaba bay sand will be presented and analyzed
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