Design of Flexible Pavement on Black Cotton Soil Stabilized with RBI Grade 81

  • Vilas Patil
  • Prathamesh JoshiEmail author
  • Shubham Kale
  • Tanmay Pingle
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 31)


Road infrastructure in India is developing rapidly demanding good quality of soil for the safe, comfortable and economic movement of traffic. Often soil with low CBR value (<3%) or expansive clayey type of soil such as black cotton soil is encountered on field, in such a case soil has to be completely replaced or its geotechnical properties are to be improved by means of stabilization. Chemical stabilization of soil by use of fly ash, lime, bitumen, etc. Soil can be stabilized with RBI grade 81 which then can be used as subgrade and also in subsequent layers. RBI grade 81 is a powdered inorganic admixture which is added in BC soil in various proportions, cured for 7 days and evaluated for improvement in MDD, OMC and CBR value. A comparative study of untreated and soil treated with RBI grade 81 has been done. Flexible pavement design is done to determine saving in the cost of construction and to determine suitable content of stabilizer. It has been found that RBI Grade 81 is useful material for saving construction cost of the pavement.


Black Cotton soil Soil stabilization RBI grade 81 CBR value Pavement design Cost comparison 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Vilas Patil
    • 1
  • Prathamesh Joshi
    • 1
    Email author
  • Shubham Kale
    • 1
  • Tanmay Pingle
    • 1
  1. 1.CED, VNITNagpurIndia

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