Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 17, Problem 10P
To determine
Soil classification using AASHTO method
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Problem 1
The following grain size distribution test results were obtained from sieve analysis test.
Percent Passing
U.S. Sieve Number
4
100
10
90
20
64
40
38
08
200
18
13
Also, the Atterberg test results revealed the following results
LL = 23 and PL = 19
Classify the soil by using
a) AASHTO soil classification system
b) USCS soil classification system
Give group names and group symbols. Show the GSDC and sketch of finding necessary information from GSDC.
Problem 2
A soil sample has 98% passing the No. 4 sieve and 74% passing the No. 200 sleve. The LL for the soils 58% and the PI is 30%. Classify the soil according to the USCS.
Show step by step solutions.
The result of sieve analysis of three soils is given next. It is required to classify these soils according to the AASHTO Classification System. Use the attached AASHTO Classification of Highway Subgrade Materials Table. (a) Classification of Soil A. (b) Classification of Soil B. (c) Classification of Soil C. Sieve Analysis Results for Situation 9 Sieve Analysis Sieve Diameter, Percent Passing Number mm. 4.76 90 100 100 8. 2.38 84 90 100 10 2. 72 77 98 20 0.84 66 59 91 40 0.42 58 50 85 60 0.25 50 42 79 100 0.149 44 36 70 200 0.074 38 33 LL 42 46 47 PL 23 29 24 63
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- The following results were obtained by a mechanical analysis. Classify the soil using the AASHTO classification system and also detemine the group index. Liquid limit = 42 and plastic limit = 23. Sieve No. % Finer 10 40 200 98 81 38arrow_forwardThe table shows the laboratory result of the sieve analysis of the sample. Determine the percent finer at size 0.74and 0.004. Determine also the soil classification using AASHTO.arrow_forwardSITUATION 9 The result of sieve analysis of three soils is given next. It is required to classify these soils according to the AASHTO Classification System. Use the attached AASHTO Classification of Highway Subgrade Materials Table. (a) Classification of Soil A. (b) Classification of Soil B. (c) Classification of Soil C. Sieve Analysis Results for Situation 9 Sieve Analysis Sieve Diameter, Percent Passing Number mm. 4.76 90 100 100 8. 2.38 84 90 100 10 2. 72 77 98 20 0.84 66 59 91 40 0.42 58 50 85 60 0.25 50 42 79 100 0.149 44 36 70 200 0.074 38 33 LL 42 46 47 PL 23 29 24 63arrow_forward
- Given the following Sieve Analysis and Atterberg limits results. Answer the following questions: 1- What is the effective diameter of this soil? 2- Calculate the uniformity coefficient and coefficient of gradation 3- Determine the percentage of Gravel, Sand, Fine soils according to USCS. 4- Classify the soil using AASHTO (with GI) & USCS (with group name). Diameter Sieve # % Passing 100 (тm) 90 4 4.75 96 80 3.35 90 70 10 78.8 60 20 0.85 56.8 50 40 0.425 37.8 40 60 0.25 23.6 30 100 0.15 13 20 200 0.075 4.6 10 Рan LL 10 10 0.1 0.01 Diameter PL 5 Percent Passing (%) 2.arrow_forwardThe following laboratory test results for Atterberg limits and particle-size distribution (sieve analysis) were obtained for the soil. Classify the soil according to the AASHTO Classification System.arrow_forwardAsaparrow_forward
- Classify the given soil to be used as highway subgrade material using the AASHTO Method by using the attached table for its classification. Sieve analysis % finer No. 10 Sieve = 47% %3D No. 40 Sieve = 28% No. 200 Sieve = 9% Plasticity for the minus NO.40 fraction LL = 0 PI = 2%arrow_forwardThe results of the particle-size analysis of the soil are as follows: Percent passing No. 10 sieve = 100; Percent passing No. 40 sieve = 80; Percent passing No. 10 sieve = 58.The LL and PI of minus No. 40 fraction of the soil are 30 and 10 respectively. Classify the soil by USCS system a. CH b. SP-SC c. CL-ML d. CL-MLarrow_forwardBased on the soil classification test, particle passing on sieve No. 200 is 89%, Liquid Limit is 70% and Plasticity Index is 45%. Classify the soil based on AASHTO (e.g: A-5). Show how the sample been classify. * Your answerarrow_forward
- Classify the soil sample using USDA Textural Classification System if the sample has the following particle size distribution. Gravel = 18 % Silt = 11 % Sand = 66 % Clay = 5 % O Loamy Sand O sity Loam O Sandy Loam O sity Clayarrow_forwardHow field identification of clayey soil can be done from silty soil using simpler field tests. Find the group index value according AASTHO soil classification system by using following data. % passing 75 micron sieve = 58%, Liquid limit = 50% Plastic Limit = 35 %arrow_forwardA sample of soil has a plastic limit of (25) % and a liquid limit of (55)% Soil sample was tested for classification in the laboratory and grain size distribution is given below. Classify the soil by the Unified Soil Classification System (USCS) and AASHTO Classification systems.arrow_forward
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