Effect of Scrap Tyre Crumb Rubber (STCR) and Lime on the California Bearing Ratio (CBR) of Non-Lateritic Soil

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Ibrahim Mohammed Tasiu
Abimiku Joshua
Claudius Konitufe


Nigeria is one of the countries generating many used tyres with only small quantity utilized for different local use and the remaining large quantity dumped in different areas as waste. In this study non – laterite soil was stabilized with 3 % Scrap Tyre Crumb Rubber (STCR) and 5.0, 7.5, 10.0, 12.5 and 15.0 % lime for use as road construction material. Atterberg limit tests, compaction (using West African Standard energy) and California Bearing Ratio (CBR) tests were carried out using standard methods, on the natural non-lateritic soil and the treated soil specimens. Preliminary test on the soil was carried out which classified the soil as A-6 (9) and CL in accordance with ASHTO and USCS classification systems respectively.  Compaction and California Bearing Ratio (CBR) parameters of the treated non-lateritic showed a great improvement as the MDD increased from 1.68 Mg/m3 to 1.88 Mg/m3 while the OMC reduced from 17.1 % to 14 %. Both soaked and unsoaked CBR values equally increased to 109 % and 103 % respectively with the addition of lime up to 15% plus 3% STCR waste. Based on results obtained from the study, the use of a mixture of 15% lime and 3% STCR waste, are recommended for the treatment of non-lateritic soil for road construction purposes.

Keywords: Non-Lateritic Soil, Scrap Tyre Crumb Rubber, California Bearing Ratio, CBR Test, Lime

Article Details

Effect of Scrap Tyre Crumb Rubber (STCR) and Lime on the California Bearing Ratio (CBR) of Non-Lateritic Soil. (2024). African Journal of Advances in Science and Technology Research, 15(1), 16-27. https://doi.org/10.62154/fckyd322

Copyright (c) 2024 Ibrahim Mohammed Tasiu, Abimiku Joshua, Claudius Konitufe (Author)

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Ibrahim Mohammed Tasiu, Abubakar Tafawa Balewa University, Bauchi, Bauchi State, Nigeria.

Department of Civil Engineering,

Abubakar Tafawa Balewa University, Bauchi, Bauchi State, Nigeria.

Abimiku Joshua, Kaduna Polytechnic, Kaduna State, Nigeria.

Department of Civil Engineering, 

Kaduna Polytechnic, Kaduna State, Nigeria.

Claudius Konitufe, Abubakar Tafawa Balewa University Bauchi, Bauchi State, Nigeria.

Department of Civil Engineering,

Abubakar Tafawa Balewa University Bauchi, Bauchi State, Nigeria.

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