Umm B- If SBS was added by 5% to the sample one How much SBS was used if the road width is 12 m and the layer thickness was 10 cm?

Explain the importance of determination of the swelling index ?

According to the following Laboratory data:Draw the Particle Size Curve.Determine Cu and Cc from the granulometric curve and indicate if it is Uniform, Well Graded orBad Grade.Granulometric test; Total Weight = 24,077.0 g

Three groups of students from the Geotechnical Engineering class collected soil-aggregate samples for laboratory testing from a recycled aggregate processing plant in Palm Beach County, Florida. Three samples, denoted by Soil A, Soil B, and Soil C, were collected from three locations of the aggregate stockpile, and sieve analyses were conducted (see Figure 2.35). (a) (b) Figure 2.35 (a) Soil-aggregate stockpile; (b) sieve analysis (Courtesy of Khaled Sobhan, Florida Atlantic University, Boca Raton, Florida) a. Determine the coefficient of uniformity and the coefficient of gradation for Soils A, B, and C. b. Which one is coarser: Soil A or Soil C? Justify your answer. c. Although the soils are obtained from the same stockpile, why are the curves so different? (Hint: Comment on particle segregation and representative field sampling.) d. Determine the percentages of gravel, sand and fines according to Unified Soil Classification System.

A 2850 g and 2380 g mass for wet and dry soil were obtained respectively during the conduct of moisture relation test on an  aggregate base coarse materials. What is the wet density of the soil materials when a 0.000943cum volume of mold is used? From the above laboratory data, what will be the dry density of the soil Aggregate base materials?

From your Atterberg limits tests on the -40 portion of these samples, you have obtained the following data Percentage finer by weight 100% 80% 60% 40% 20% Soil Sample Identification 0% 0.001 H I J L FINES 0.010 H Liquid Limit 60 46 37 Plastic Limit 26 nonplastic #200 34 18 Fine SAND Medium Course 0.100 Particle size (mm) 1.000 #4 danastants GRAVEL Fine 10.000 Coarse 3" 100.000

SHOW ALL SOLUTIONS a. Effective size b. Uniformity Coefficient c. Coefficient of Gradation d. Sorting Coefficient e. Percent of gravel, sand, silt and clay of MIT f. Percent of gravel, sand, silt and clay of AASHTO g. Percent of gravel, sand, silt and clay of USDA h. Percent of gravel, sand, silt and clay of USCS

7) Answer the ff: a) The ratio of horizontal to the vertical permeability is b) The ratio of vertical to the horizontal permeability is c) The horizontal permeability is d) The vertical permeability is e) Seepage will be greater or equal in the horizontal/vertical/both?

4. A series of tests are run on a HMAC Sample. The following data is given to you:% AC (Pb) = 10 %Gb = 1.040Gsb = 2.51Gmm = 2.696Mass of compacted HMAC sample = 840 grMass of compacted HMAC sample submerged in water = 512 grMass of compacted HMAC sample, SSD condition = 847 gra. Based on the above information what is the Gmb? b. Based on the above information what is the of VTM? c. Based on the above information what is the of VMA? d. Based on the above information what is the of VFA?

2. Based on the USCS, what is the 20 points percentage of the gravel in this sample? * Sieve Percent 100 Sieve 90 opening (mm) passing (finer) No. 80 70 4 4.75 99.0 60 10 2 94.0 50 20 0.85 67.4 40 30 30 0.6 51.4 20 40 0.425 39.4 10 60 0.25 23.4 140 0.106 13.4 0.01 0.1 1 10 200 0.075 2.0 Particle size (mm) Pan O (a) 0 % O (b) 6% O (c) 1% O (d) 32.6% Percent finer by weight