Experimental investigation to predict PBT, UCS & CBR values from DCP test for cement-fly ash stabilised soil

Soil stabilisation is a process to treat a soil to maintain, alter or improve the performance of the soil as a construction material and very important to minimise the cost of earth work in case of unavailability of good earth at nearby source. The use of stabilising agent, for subgrade with weak soil, improves strength parameter, such as cohesion, and improvement in cohesion leads to strengthening of embankment. This will ultimately lower the cost of road construction. In this research, fly ash and cement are used as stabilizing agents with sandy soil to improve strength properties and also to increase binding properties to prevent settlement of subgrade and rain cut of road shoulders. Improved strength of soil provides stability to road embankment against soil erosion and settlement during rainy seasons. The present paper describes outcome of experimental investigation of effect stabilising agents, such as fly ash and cement used with non-cohesive soil. The effects of stabilizing agent on soil characteristics and strength parameters are measured using tests like sieve analysis, liquid limit test, plastic limit test, plate bearing test, dynamic cone penetrometer test, unconfined compressive strength and California bearing ratio (CBR) test. Using results of investigation, correlations are derived from multi variable linear regression between simple, rapid and economical dynamic cone penetrometer test with CBR, unconfined compressive strength (UCS) and K-value for various proportion of cement and fly ash mixed with sandy soil. Use of these correlations will prove cost-effective and reduce considerable time.

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  • Supplemental Notes:
    • Abstract reprinted with permission from the publisher.
  • Authors:
    • Patel, Mukesh A
    • Patel, H S
  • Publication Date: 2013-9


  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 73-81
  • Serial:
    • Indian Highways
    • Volume: 41
    • Issue Number: 9
    • Publisher: Indian Roads Congress
    • ISSN: 0376-7256

Subject/Index Terms

Filing Info

  • Accession Number: 01496200
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 24 2013 9:34AM