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Compressibility of Fly Ash and Fly Ash-Bentonite Mixtures

Author(s): ORCID
Medium: journal article
Language(s): English
Published in: The Baltic Journal of Road and Bridge Engineering, , n. 3, v. 17
Page(s): 21-43
DOI: 10.7250/bjrbe.2022-17.567
Abstract:

Environmental protection, one of the most important issues nowadays, forces civil engineers to look for alternative solutions to the known ones. The use of substitute materials as an embankment fill or a ground material under the embankment instead of natural soil follows these trends. A great amount of fly ash is disposed of in landfills. It is a cost-effective material that can be used in construction instead of natural soil. The geotechnical properties of fly ash as a construction material in place of soil need to be examined. It includes laboratory tests to determine the chemical composition and geotechnical characteristics. In the present work, one-dimensional consolidation tests have been conducted to examine the compressibility behaviour of compacted fly ash and fly ash-bentonite mixtures used in the earth structures like road embankments. The analysis of the consolidation phenomenon is useful for predicting the magnitude and rate of settlement of the structure. Materials compacted at OMC to their MDD, according to Standard Proctor, were tested in Rowe-Barden type consolidometer on saturated and non-saturated samples. Coefficients of consolidation have been compared between values derived from log-time and square-root-of-time methods and direct hydraulic conductivity tests. Bentonite amount in fly ash-bentonite mixtures influences the vertical deformation of the sample.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.7250/bjrbe.2022-17.567.
  • About this
    data sheet
  • Reference-ID
    10696403
  • Published on:
    10/12/2022
  • Last updated on:
    10/12/2022
 
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