The effects of coconut shell ash admixed with lime in variation to curing time for road construction

Abstract Poor subgrade soil conditions might cause insufficient pavement support and shorten the life of pavement. The addition chemical or cementation additives to soils can help perform better. Chemical be anything from waste manufactured components like lime coconut shell ash (CSA). These used improve qualities a soils. efficiency these is determined by type treated amount additive used. Therefore, this research investigated properties expansive clay when stabilized CSA. physical tests were carried out on natural sample for identification classification; later, mechanical performed namely California Bearing Ratio (CBR). All in accordance BS 1377 (1990). was added with constant quantity 6%, while CSA proportions 2%, 4%, 8% total weigh admixed sample. percentage 6% stabilization as it recorded highest CBR value during testing. lime-CSA mixture achieved at Variation 2 (6% + 4% CSA) 4, 7, 28 days soaked observed stage. Thus, proven that treating combined enhances strength.