Ground-movement-related building damage

Article Abstract:

A seven-step procedure to be used in determining the severity of ground-movement-related building damage based on approximate crack width may be inaccurate when cracking is hidden or patched or when other factors contribute to the crack widths. The severity of the damage should be based on a number of factors, which include crack widths, differential settlement, and angular distortion of the foundation.

Analysis, Subsidences (Earth movements), Land subsidences, Shock (Mechanics)

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One-dimensional compression of sands at high pressures

Article Abstract:

The laterally confined dynamics of sand when experiencing compressive stress of as much as 800 MPa is investigated. Quartz sand particles are found to be almost crushed into a very low void ratio of around 0.13 when subjected to pressures of 800 MPa. Compression curve shapes indicate that the vertical stress is greater than around 10 MPa to start crushing of the quartz sand in confined compression.

Compressibility, Sandy soils, Materials at high pressures, High pressure effects

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Significance of particle crushing in granular materials

Article Abstract:

A study was conducted on the confining pressure-caused crushing of granular particles. Results show that particle crushing is reduced by enhancing mineral hardness and that smaller amounts of breakage for a given stress is achieved with stronger or harder particles. Results are consistent with those obtained from the crushing of sedimentary rock-derived oversized particles.

Strength of materials, Strength (Materials), Granular materials, Stress concentration

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