Establishment of Correlation between CBR and Resilient Modulus of Subgrade

International Journal of Civil Engineering

© 2019 by SSRG - IJCE Journal

Volume 6 Issue 5

Year of Publication : 2019

Authors : S. Muthu Lakshmi, M. Ragapriya, K. Sindhoora, N. Udhayatharini

10.14445/23488352/IJCE-V6I5P107

How to Cite?

S. Muthu Lakshmi, M. Ragapriya, K. Sindhoora, N. Udhayatharini, "Establishment of Correlation between CBR and Resilient Modulus of Subgrade," SSRG International Journal of Civil Engineering, vol. 6,  no. 5, pp. 44-49, 2019. Crossref, https://doi.org/10.14445/23488352/IJCE-V6I5P107

Abstract:

In the present study, an effort has been made to develop an empirical correlation between Resilient Modulus (MR) and soaked California Bearing Ratio (CBR) for the subgrade soil. MR is widely used to design pavements instead of the CBR value in recent software like IIT PAVE. MR is usually determined in the laboratory by conducting tests as per AASHTO T 307-99(2003) (1), using the cyclic triaxial test. Since the repetitive triaxial testing facility is not widely available and is expensive, few generally accepted correlations from IRC: 37-2012 are used in India. As these general correlations are derived based on the American standards, they are not ideal for the Indian design conditions. Thus, it is necessary to determine a suitable empirical correlation that suits the Indian conditions. For this purpose, disturbed soil samples were collected from 5 different locations in and around the Chennai area. Laboratory tests were conducted on the 5 different soil samples to determine its index properties to classify the soil as per the Indian Standard Soil Classification System (ISCS). Soil specimens for soaked CBR test and triaxial test were prepared based on Optimum Moisture Content and Maximum Dry Density values obtained from Modified Proctor Compaction Test. Based on the soaked CBR value and MR value obtained from the repetitive triaxial test for 5 different soil samples, an empirical correlation was established between the two entities that would suit the Indian design conditions.

Keywords:

Resilient Modulus, CBR, triaxial test, cyclic triaxial test.

References:

[1] Naveen B Shirur, and Santosh G Hiremath, Establishing Relationship between CBR value and Physical Properties of Soil, IOSR Journal of Mechanical and Civil Engineering, Vol. 11(5),(2014),26-30.
[2] Wojciech Sas, Andrzej Gluchowski, and Alojzy Szymanski, Determination of the Resilient modulus MR for the lime stabilized clay obtained from the repeated loading CBR tests, Annals of Warsaw University of Life Sciences – SGGW, 44(2), (2012),143-153.
[3] Adama Dione, Meissa Fall, Yves, Berthaud, Farid Benboudjema, and Alexandre Michou, Implementation of Resilient Modulus - CBR relationship in Mechanistic-
Empirical (M. -E) Pavement Design, Revue du Cames – Sci. Appl. & de l’Ing., 1(2),(2015),65-71.
[4] Adama Dione, Meissa Fall, Yves Berthaud, and Makhaly Ba, Estimation of Resilient Modulus of Unbound Granular Materials from Senegal (West Africa), Geomaterials, 3, (2013),172-178.
[5] Muhammad Arshad, Development of a Correlation between the Resilient Modulus and CBR Value for Granular Blends Containing Natural Aggregates and RAP/RCA Materials, Advances in Materials Science and Engineering., (2019),1-16.
[6] W. Sas, and A. Gluchowski, Methods of determination of the modulus of elasticity (E and Mr) from the repeated loading tests CBR,Przeglad Naukowy Inzynieria i Ksztattowanie Srodowiska, 21(3), (2012),171–181.
[7] S. Nazarian, R. Pezo, S. Melarkode, M. Picornell, the Testing methodology for Resilient modulus of base materials, The Center for Geotechnical and Highway Materials Research, University of Texas, El Paso, USA, (1996).
[8] Shabbir Hossain, Gale M. Dickerson, and Chaz B. Weaver, Comparative Study of VTM and AASHTO Test Method for CBR, Co Materials Division, VDOT, (2005).
[9] N. Garg, A. Larkin, and H. Brar, A comparative subgrade evaluation using CBR, vane shear, lightweight deflectometer, and resilient modulus tests, in Proc. 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields, CRC Press, Champaign, IL, USA, (2009).
[10] N. W. Lister and D. Powell, Design practices for pavements in the United Kingdom, in Proc. 6th International Conference on the Structural Design of Asphalt Pavements, Ann Arbor, MI, USA, July 1987.
[11] Ashutosh Tejankar, Abhishek Chintawar, Characterization and Testing of Foamed Modified Bitumen for Quality Assurance and Feasibility for Indian Condition and Standards, SSRG International Journal of Civil Engineering 3(2) (2016) 13-18.
[12] Sigurdur Erlingsson, On Forecasting the Resilient Modulus from the CBR Value of Granular Bases, Road Materials, and Pavement Design, Taylor & Francis, 8(4),(2011),783-797.
[13] B. Sukumaran, V. Kyatham, A. Shah, and D. Sheth, Suitability of using California Bearing Ratio to predict resilient modulus, in Proc. FAA Airport Technology Transfer Conference, (2002).
[14] E. C. Drumm et al., Estimation of subgrade resilient modulus from the standard test, Journal of Geotechnical Engineering,116, 5, 774-789, (1990).
[15] S. F. Brown, and E. T. Selig, The design of pavement and rail track foundations, Cyclic loading of soils: From theory to design, M. P. O’Reilly and S. F. Brown, eds., Blackie and Son Ld., Glasgow, Scotland, 249-305, (1991).
[16] F. Lekarp, U. Isacsson, and A. Dawson, State of the Art. I: Resilient Response of Unbound Aggregates., Journal of Transportation Engineering, 126(1), (2000),66-75.
[17] [K. P. George, Prediction of Resilient Modulus from Soil Index Properties, Final report, Mississippi Department of Transportation, Research Division, Jackson, 71,(2004).
[18] M. R. Thompson, R. Marshall, and Q. L. Robnett, Resilient properties of subgrade soils, Final Report No. FHWA-IL-UI- 160, University of Illinois, Urbana, IL, USA, (1976).
[19] D. W. Hight and M. G. H. Stevens, An analysis of the California Bearing Ratio test in saturated clays, Geotechnique, 32( 4), (1982),315–322,
[20] S. Muthu Lakshmi, Surya Subramanian, M. P. Lalithambikhai, A. Mithra Vela & M. Ashni, Evaluation of Soaked and Unsoaked CBR values of Soil-based on the Compaction Characteristics, Malaysian Journal of Civil Engineering, 28(2), (2016),172-182.
[21] J. A. Boateng, E. Tutumluer, A. Apeagyei, and G. Ochieng, Resilient Behavior Characterization of Geomaterials for Pavement Design, in Proc. 11th International Conference on Asphalt Pavements, Japan, (2010).