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Assessment of Equivalent Grain Diameter for Soil Specific Surface Determination | ||
| Journal of Engineering | ||
| Article 1, Volume 11, Issue 2, 2005, Pages 275-289 | ||
| Authors | ||
| Maysam Thamir Al-Hadidi; Ahmed Abdul-Ezel Al-Mufty | ||
| Abstract | ||
| A procedure is presented to calculate an equivalent diameter for soil grains to be used to calculate the specific surface of the soil. The typical grain size distribution curve is expressed as a normal probability distribution cumulative curve and the frequency corresponding to the equivalent diameter is accordingly found. This frequency is adopted as the percent finer corresponding to the equivalent diameter. A relation is given for the calculation of the specific surface using the equivalent diameter. Grain size distribution curves of many soil samples are collected. A value for the specific surface of each soil is determined summing the surface area of subintervals in the distribution curve. The values of specific surface obtained from these gradation curves are compared to those calculated using the proposed values of the equivalent diameter for each soil. The results have shown good agreement for using the equivalent diameter that presented in this paper to determine the specific surface for soils instead of using the usual long procedure. | ||
| Keywords | ||
| Effective diameter; equivalent diameter; specific surface; grain size distribution | ||
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