Utilizing Fly Ash to Improve Subgrade Properties in Bangladesh

Mohammed Russedul Islam, Mohammad Imran Hossain, Mumtahina Binte Iqbal, Mostafizur Rahman, Ausmita Sarker, Ceayum A. Noor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Using waste products as highway material is an efficient solution to the problems associated with their disposal. Approximately 52,000 tons of fly ash produced annually at Boropukuria coal-based power plant in Bangladesh require a huge disposal area and create environmental issues. In the future, it will be challenging to manage disposal sites for fly ash for a densely populated country like Bangladesh. Stabilization of problematic soils with fly ash not only improves engineering properties of soil but also provides a solution to issues of fly ash disposal. This paper reports the results of laboratory investigation carried out on expansive soil collected from Rajendrapur area stabilized with fly ash. Series of laboratory tests are carried out to find chemical composition, Atterberg's limit, maximum dry density, optimum moisture content, soaked CBR, swelling index, unconfined compression strength. Here, 4% cement is used as an activator, and an optimum amount of fly ash is determined from laboratory tests. The effect of cement with different fly ash contents are correlated with the unconfined compressive strength and Atterberg limits of stabilized soil. The study finds that soaked CBR value of the soil improves from 1.73 to 26 after adding 6% of fly ash for 14 days of curing. Moreover, swelling index of the collected soil for 4-days soaking is found to be decreased by 47% when 6% fly ash is added. The outcome of this study will guide road engineers of Bangladesh to use fly ash for stabilizing the subgrade having swelling potential.

Original languageEnglish
Title of host publicationAirfield and Highway Pavements 2019
Subtitle of host publicationTesting and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019
EditorsImad L. Al-Qadi, Hasan Ozer, Andreas Loizos, Scott Murrell
PublisherAmerican Society of Civil Engineers (ASCE)
Pages522-530
Number of pages9
ISBN (Electronic)9780784482469
DOIs
Publication statusPublished - 1 Jan 2019
EventInternational Airfield and Highway Pavements Conference 2019: Testing and Characterization of Pavement Materials - Chicago, United States
Duration: 21 Jul 201924 Jul 2019

Publication series

NameAirfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019

Conference

ConferenceInternational Airfield and Highway Pavements Conference 2019: Testing and Characterization of Pavement Materials
CountryUnited States
CityChicago
Period21/7/1924/7/19

Fingerprint

Fly ash
Soils
Waste disposal
Swelling
Cements
Compressive strength
Curing
Power plants
Compaction
Moisture
Stabilization
Coal
Engineers
Chemical analysis

Keywords

  • CBR
  • Fly ash
  • Stabilization
  • Subgrade
  • Swelling index

ASJC Scopus subject areas

  • Mechanics of Materials
  • Civil and Structural Engineering

Cite this

Islam, M. R., Hossain, M. I., Iqbal, M. B., Rahman, M., Sarker, A., & Noor, C. A. (2019). Utilizing Fly Ash to Improve Subgrade Properties in Bangladesh. In I. L. Al-Qadi, H. Ozer, A. Loizos, & S. Murrell (Eds.), Airfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019 (pp. 522-530). (Airfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784482469.052

Utilizing Fly Ash to Improve Subgrade Properties in Bangladesh. / Islam, Mohammed Russedul; Hossain, Mohammad Imran; Iqbal, Mumtahina Binte; Rahman, Mostafizur; Sarker, Ausmita; Noor, Ceayum A.

Airfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019. ed. / Imad L. Al-Qadi; Hasan Ozer; Andreas Loizos; Scott Murrell. American Society of Civil Engineers (ASCE), 2019. p. 522-530 (Airfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Islam, MR, Hossain, MI, Iqbal, MB, Rahman, M, Sarker, A & Noor, CA 2019, Utilizing Fly Ash to Improve Subgrade Properties in Bangladesh. in IL Al-Qadi, H Ozer, A Loizos & S Murrell (eds), Airfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019. Airfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019, American Society of Civil Engineers (ASCE), pp. 522-530, International Airfield and Highway Pavements Conference 2019: Testing and Characterization of Pavement Materials, Chicago, United States, 21/7/19. https://doi.org/10.1061/9780784482469.052
Islam MR, Hossain MI, Iqbal MB, Rahman M, Sarker A, Noor CA. Utilizing Fly Ash to Improve Subgrade Properties in Bangladesh. In Al-Qadi IL, Ozer H, Loizos A, Murrell S, editors, Airfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019. American Society of Civil Engineers (ASCE). 2019. p. 522-530. (Airfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019). https://doi.org/10.1061/9780784482469.052
Islam, Mohammed Russedul ; Hossain, Mohammad Imran ; Iqbal, Mumtahina Binte ; Rahman, Mostafizur ; Sarker, Ausmita ; Noor, Ceayum A. / Utilizing Fly Ash to Improve Subgrade Properties in Bangladesh. Airfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019. editor / Imad L. Al-Qadi ; Hasan Ozer ; Andreas Loizos ; Scott Murrell. American Society of Civil Engineers (ASCE), 2019. pp. 522-530 (Airfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials - Selected Papers from the International Airfield and Highway Pavements Conference 2019).
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