EVALUATION of GEOTECHNICAL BEHAVIOR of CLAY SOIL with CRUMB RUBBER ADDITION

Year 2022, Issue: 051, 136 - 148, 31.12.2022

Sadettin Topçu , Evren Seyrek

Abstract

The issue of investigating the usability of waste materials in many different applications of civil engineering has attracted the attention of researchers until today. The additive material used for stabiliser is waste material that causes positive effects on the environment, engineering and economy. Studies on the use of waste materials, especially in improving road and foundation filling materials, have recently attracted attention. In this study, compaction parameters, California Bearing Ratio (CBR) with the soaked and unsoaked condition and unconfined compressive strength values of soil-crumb rubber mixtures were evaluated. To investigate these effects, crumb rubber with various percentages (2.5%, 5.0%, 7.5%, 10.0% and 15.0%) was added to clay soil taken from Eskisehir city in Turkey. CBR and unconfined compressive test results show that a 5.0% crumb rubber level is optimum. For 5.0% additive level, soaked and unsoaked CBR values increased by approximately 18% and 25%, respectively. The highest increase was seen at same additive level as 8% compared to pure clay specimen for unconfined compressive strength.

Keywords

Clay, Crumb rubber, CBR, Strength

Thanks

The authors declare that there is no conflict of interest in the course of this study.

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