Abstract The objective of the work is to determine the effectiveness of RBI Grade 81 for improvement in engineering properties of medium plasticity clayey soil. RBI Grade 81 was treated with collected soil sample at different dosages. Various samples have been made by mixing soil with 0, 2, 4, 6 and 8% RBI Grade 81; method of soil replacement is opted for the preparation of samples. After studying the properties of soil samples, light compaction test and California bearing ratio test was conducted under soaked and unsoaked conditions. Soaked CBR test results signify that the stabilizer can be used excellently with cohesive soils. Subsequently, unconfined compression test was done to determine the strength of clayey sample; the treated soil samples were cured for different periods 1, 7 and ranging up to 28 days. From the study it was found that soil can be stabilized with RBI grade 81 at different dosage and later can be used in subgrade and subbase layer of pavement. Keywords: RBI grade 81, soil stabilization, light compaction test, unconfined compressive strength, California bearing ratioCite this Article Abhishek Sehgal, Tanuj Chopra, Rajesh Pathak. Strengthening of Subgrade and Sub-Base of Bituminous Pavement Using RBI Grade 81. Journal of Geotechnical Engineering. 2016; 3(3): 27–32p.
