Soil gradation (original) (raw)
Soil gradation is a classification of a coarse-grained soil that ranks the soil based on the different particle sizes contained in the soil. Soil gradation is an important aspect of soil mechanics and geotechnical engineering because it is an indicator of other engineering properties such as compressibility, shear strength, and hydraulic conductivity. In a design, the gradation of the in situ or on site soil often controls the design and ground water drainage of the site. A poorly graded soil will have better drainage than a well graded soil, if it is not high in clay quality.
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| dbo:abstract | Soil gradation is a classification of a coarse-grained soil that ranks the soil based on the different particle sizes contained in the soil. Soil gradation is an important aspect of soil mechanics and geotechnical engineering because it is an indicator of other engineering properties such as compressibility, shear strength, and hydraulic conductivity. In a design, the gradation of the in situ or on site soil often controls the design and ground water drainage of the site. A poorly graded soil will have better drainage than a well graded soil, if it is not high in clay quality. Soil is graded as either well graded or poorly graded. Soil gradation is determined by analyzing the results of a sieve analysis or a hydrometer analysis. The process for grading a soil is in accordance with either the Unified Soil Classification System or the AASHTO Soil Classification System. Gradation of a soil is determined by reading the grain size distribution curve produced from the results of laboratory tests on the soil. Gradation of a soil can also be determined by calculating the coefficient of uniformity, Cu, and the coefficient of curvature, Cc, of the soil and comparing the calculated values with published gradation limits. (en) Гранулометрический состав грунта (грансостав грунта) — классификация песка и гравия, на основе размеров частиц, содержащихся в нём. Грансостав грунта является является индикатором других инженерных свойств, таких как сжимаемость , прочность на сдвиг Cu и гидравлическая проводимость k. По грансоставу грунта проектируют дренаж грунтовых вод. Плохо отсортированный грунт будет иметь лучший дренаж, чем почва с хорошей градацией, если она не содержит глины высокого качества. Грунт классифицируется как хорошо сортированный или плохо сортированный на основе ситового анализаили ареометрического анализа. Процесс классификации почвы соответствует либо Единой системе классификации почв, либо Системе классификации почв AASHTO. Градация почвы определяется путем чтения кривой гранулометрического состава, полученной по результатам лабораторных испытаний почвы. Градация почвы также может быть определена путем расчета коэффициента однородности, Cu, коэффициента кривизны, Cc. (ru) |
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| rdfs:comment | Soil gradation is a classification of a coarse-grained soil that ranks the soil based on the different particle sizes contained in the soil. Soil gradation is an important aspect of soil mechanics and geotechnical engineering because it is an indicator of other engineering properties such as compressibility, shear strength, and hydraulic conductivity. In a design, the gradation of the in situ or on site soil often controls the design and ground water drainage of the site. A poorly graded soil will have better drainage than a well graded soil, if it is not high in clay quality. (en) Гранулометрический состав грунта (грансостав грунта) — классификация песка и гравия, на основе размеров частиц, содержащихся в нём. Грансостав грунта является является индикатором других инженерных свойств, таких как сжимаемость , прочность на сдвиг Cu и гидравлическая проводимость k. По грансоставу грунта проектируют дренаж грунтовых вод. Плохо отсортированный грунт будет иметь лучший дренаж, чем почва с хорошей градацией, если она не содержит глины высокого качества. (ru) |
| rdfs:label | Soil gradation (en) Гранулометрический состав грунта (ru) |
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