Hw 6 - Slight pressure required to crush. This would be a...

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CCEV360-04 February 12, 2008 Dillon Gauthier Atkins Ch. 1 #12, 16-18, 20, 21, 23-25 12.) Density = 1.96 g/cm 3 Dry Density = 1.68 g/cm 3 RD = 2.65 Assumed Vol. 1000cm 3 Water Content (w) = (280)/(1680) = 17% Void Ratio ( e ) = (0.366)/(0.634) = 0.58 Porosity ( n ) = (0.366)/(1) = 0.366 Degree of Saturation ( S ) = (0.28)/(0.366) = 0.77 16.) Sieve Size [mm] Retained Mass [g] Percent Retained Cumulative Percent Retained Percent Passing 12.5 0 0.0 0.0 100.0 9.5 74.5 9.2 9.2 90.8 4.75 217.1 26.9 36.1 63.9 2.36 192.3 23.8 59.9 40.1 1.18 75.8 9.4 69.3 30.7 0.3 116.9 14.5 83.8 16.2 0.75 83.2 10.3 94.1 5.9 PAN 47.4 5.9 100.0 0.0 ∑= 807.1 100.0
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18.) SOILS X, Y % Gravel = % Sand = % Fines = D 10 = C U = SOIL Z % Sand = % Silt = % Clay = 17.) 18% Gravel; 25% Sand; 14% Silt; 5% Clay.
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20.) LL – PL = PI 38 – 27 = 11 Moderately plastic. Low to medium dry strength.
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Unformatted text preview: Slight pressure required to crush. This would be a silt-clay mixture. 23.) The two main properties measured in laboratories to identify and classify soils are the Liquid Limit, and the Plastic Limit. 24.) Sieve tests can be used to determine the grain-size distribution. The Atterberg Limits test results are required to classify soils. 25.) Soil A: w L = 35 w P =26 I P = 9 41% moisture Soil B: w L = 63 w P =36 I P = 27 58% moisture Soil A is a silt-clay mixture. Soil B is Kaolinite clay. Soil A is a slightly firm soil. Soil B is a very soft soil as its water content is above its liquid limit....
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This homework help was uploaded on 04/07/2008 for the course CCEV 360 taught by Professor Lambrechts during the Spring '08 term at Wentworth Institute of Technology.

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Hw 6 - Slight pressure required to crush. This would be a...

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