Estimation of Subgrade Resilient Modulus Using Unconfined Compression Test
نویسندگان
چکیده
1 2 Resilient modulus test is the recommended test to characterize subgrade soil for 3 pavement design in 1993 AASHTO pavement design guide as well as new proposed 4 Mechanistic-Empirical Pavement Design Guide (MEPDG). This test requires significant 5 resources including high level of technical capability to conduct. For smaller projects where 6 costly and complex resilient modulus testing is not justified, correlation with other simpler tests 7 could be used. Virginia Department of Transportation uses a simple correlation with California 8 Bearing Ratio (CBR) to estimate resilient modulus for their current AASHTO design. As the 9 correlation with CBR was found to be poor, a simpler unconfined compression test is explored 10 for a better estimation of resilient modulus of fine grained soils. A model is proposed to estimate 11 the resilient modulus of fine grained soil from the results of unconfined compression test. 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 TRB 2013 Annual Meeting Paper revised from original submittal.
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Estimation of Subgrade Resilient Modulus Using the Unconfined Compression Test
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