• C. Lavanya

Use of waste materials in transportation has been in development all over the world for quite a time and particularly because of the disposal problems associated with it. Copper slag is one of the waste materials that is being used for various applications in civil engineering. Granulated copper slag is more porous and has particle sizes equal to that of medium sand. Also, due to the scarcity of sand, copper slag along with an admixture can be used as an alternative material to sand in road construction. On the other hand, Expansive soils are associated with volume changes when subjected to changes in water content. CNS (cohesive non-swelling) and sand cushion are some of the techniques that have been used to reduce the volume changes and which were originally in practice, bristle with a few disadvantages. The present paper discusses the laboratory test results of soaked CBR (California Bearing Ratio) conducted on a stabilized copper slag cushion-soil system for the thickness ratios of 0.50 and 1.00 when stabilized with various percentages of lime. The results showed that the soaked CBR increases as the ratio of the thickness of the cushion (hc) to the thickness of the expansive soil bed (hs) is increased and with the increase in percentage of admixture.

Expansive soil, Copper slag, Lime, Soaked CBR

"Influence of Lime when Admixed with Copper Slag Cushion Laid Over Expansive Soil Bed", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.4, Issue 3, page no.709-714, March-2017, Available :http://www.jetir.org/papers/JETIR1703120.pdf

"Influence of Lime when Admixed with Copper Slag Cushion Laid Over Expansive Soil Bed", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 3, page no. pp709-714, March-2017, Available at : http://www.jetir.org/papers/JETIR1703120.pdf