Correlation between the California Bearing Ratio (CBR) and Unconfined Compressive Strength (UCS) of Stabilized Sand-Cement of the Niger Delta

International Journal of Civil Engineering
© 2016 by SSRG - IJCE Journal
Volume 3 Issue 3
Year of Publication : 2016
Authors : D.B. Eme, T.C Nwofor and S. Sule
pdf
How to Cite?

D.B. Eme, T.C Nwofor and S. Sule, "Correlation between the California Bearing Ratio (CBR) and Unconfined Compressive Strength (UCS) of Stabilized Sand-Cement of the Niger Delta," SSRG International Journal of Civil Engineering, vol. 3,  no. 3, pp. 7-13, 2016. Crossref, https://doi.org/10.14445/23488352/IJCE-V3I3P103

Abstract:

 The California bearing ratio and the unconfined compressive strengths of sand- cement were measured in ten (10) different prepared CBR and UCS specimens. The sand-cement mix was prepared by mixing 10.5kg of sand with 5.5% by weight of cement and moisture content of 12%. The CBR specimens were cured for 6 days followed by 24 hours soaking while the UCS specimens were cured for 7 days. The CBR and UCS specimens were tested after their curing and soaking periods and gave values greater than 200% and 2500kpa respectively. The data obtained were subjected to regression analysis to check their correlation. The R2 obtained showed that there is a little correlation between CBR and UCS.

Keywords:

 California bearing ratio, unconfined compressive strengths, regression analysis, soaking, sand-cement mix, moisture content, correlation.

References:

[1] British standards Institution (1975). Methods of Testing soils for Civil Engineering Purposes, London, BS 1377.
[2] Federal Ministry of Working and Housing (1997). General Specifications for Roads and Bridges, Vol. II, Clauses 6220; 6221; 6228.
[3] Purushothama Raj P. (1995). Geotechnical Engineering. New Delhi Tata McGraw Hill.
[4] Hamzah Y., Pallu M.S, Samang L. and Tjaronge (2012). Characteristic analysis of unconfined compressive strength and CBR laboratory on dredging sediment stabilized with portland cement. International Journal of Civil & Environmental Engineering IJCEE-IJENS Vol. 12. No. 04.
[5] Fredlund D. G., Morgenstern N. R. & Widger R. A. (1978). Shear strength of unsaturated soils, Canadian Geotechnical Journal, Vol. 15 pt. 3, pp 313-321.
[6] Justin P. M. & Robert L. P. (2004). Performance of soil stabilization agents, University of Kansas Lawrence, Kansas.
[7] Kawai K., Kato S., Yoshimura Y. & Sunden W. (2002). Effects of suction on compressive strength and undrained shear strength of compacted clay, 3rd International Conference on Unsaturated Soils, Brazil, pp 513 – 519.
[8] Nwaogazie Ify L. (2006). Probability and statistics for science and engineering practice. University of Port Harcourt Press Nigeria.
[9] Pejabat A., Fakulti K.A. (2003). SAM 4062 Civil Engineering laboratory II, UTM.
[10] Soil manual for the design of asphalt pavement structure (1988). The Asphalt Institute, USA,
[11] Scott C. R. (1980). An introduction to Soil Mechanics and foundations. Applied Science Publishers LTD, London.
[12] Terzaghi, K., Peck, R.B & Mesri, G. (1996). Soils mechanics in engineering practice. 3 rd edition, United States of America: John Wiley & Sons, Inc.
[13] Vanapalli S. K., Pufahi D. E & Fredlund D. G (1999). Interpretation of the shear strength of unsaturated soils in undrained loading conditions. 52nd Canadian Geotechnical Conference, Regina.
[14] Eluozo, S.N., Nwofor, T.C. & Nwaobakata, C. (2012). Models development for the determination of plastic limits for improved construction and design of roads. Archives of Applied Science Research, 4(2), 1043-1052.
[15] Eluozo, S.N., Nwaobakata, C. & Nwofor, T.C. (2012). Predictive models for validation of plastic limits of soils in Portharcort metropolis, Rivers State, Nigeria. Archives of Applied Science Research, 4(2), 1028-1038.
[16] Magbo, C.C., Sule, S. & Nwofor, T.C. (2012). Design curves for optimal design of anchored sheet pile walls in cohessionless soils. Canadian Journal on Environmental, Construction and Civil Engineering,3(3),104-112