Uniformity Coefficient Cu And Curvature Coefficient Cc In Soil

Uniformity Coefficient Cu And Coefficient Of Curvature Cc Of The uniformity coefficient (cu) is defined as the ratio of d60 to d10. a value of cu greater than 4 to 6 classifies the soil as well graded. when cu is less than 4, it is classified as poorly graded or uniformly graded soil. uniformly graded soil has identical particles with cu value approximately equal to 1. a uniformity coefficient value of 2. Uniformity coefficient (cu): it is the ratio between the sieve size which will pass 60% of the sand by weight (d60) to the effective size (d10). cu = d60 d10. a higher cu value indicates a wider range of particle sizes and, consequently, a less uniform soil. coefficient of curvature (cu): it is calculated as the square of the ratio (d30)^2.

Uniformity Coefficient Cu And Coefficient Of Curvature Cc Of The coefficient of uniformity is a crude shape parameter and the coefficient of curvature is a shape parameter. once these coefficients have been calculated, they are compared to published gradation criteria. soil gradation is essential in geotechnical engineering, as the gradation of in situ or on site soil often controls the design and ground. The uniformity coefficient (c u) the uniformity coefficient (c u ) expresses the variety in particle sizes of soil and is defined as the ratio of d 60 to d 10 ( figure 1 ). the value d 60 is the grain diameter at which 60% of soil particles are finer and 40% of soil particles are coarser, while d 10 is the grain diameter at which 10% of. Information obtained from the particle size analysis (uniformity coefficient c u, coefficient of curvature, c c, and effective size, d 10, etc.) is used to classify the soil. particle size is one of the criteria used to ascertain whether the soil is suitable for building roads, embankments, dams, etc. 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, c u, and the coefficient of curvature, c c, of the soil and comparing the calculated values with published gradation.

Uniformity Coefficient Cu And Coefficient Of Curvature Cc Of Information obtained from the particle size analysis (uniformity coefficient c u, coefficient of curvature, c c, and effective size, d 10, etc.) is used to classify the soil. particle size is one of the criteria used to ascertain whether the soil is suitable for building roads, embankments, dams, etc. 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, c u, and the coefficient of curvature, c c, of the soil and comparing the calculated values with published gradation. The coefficient of gradation may he expressed as: where cc is the coefficient of gradation and d30 diameter corresponding to 30% finer. for the particle size distribution curve of soil b shown in figure 2, the values of d10 d30 and d60 are 0.096 mm, 0.16 mm and 0.24 mm, respectively. the uniformity coefficient and coefficient of gradation are:. Download scientific diagram | coefficients of uniformity (cu) and coefficient of curvature (cc) from publication: influence of flat shaped aggregates in granular skeleton on its compactness | this.

Uniformity Coefficient Cu And Coefficient Of Curvature Cc Of The coefficient of gradation may he expressed as: where cc is the coefficient of gradation and d30 diameter corresponding to 30% finer. for the particle size distribution curve of soil b shown in figure 2, the values of d10 d30 and d60 are 0.096 mm, 0.16 mm and 0.24 mm, respectively. the uniformity coefficient and coefficient of gradation are:. Download scientific diagram | coefficients of uniformity (cu) and coefficient of curvature (cc) from publication: influence of flat shaped aggregates in granular skeleton on its compactness | this.