Improvement of Marginal Lateritic Soil by Using Biomass Ash Geopolymer

  • ยงยุทธ บำรุงพล ภาควิชาวิศวกรรมโยธา คณะวิศวกรรมศาสตร์และเทคโนโลยี มหาวิทยาลัยเทคโนโลยีราชมงคลอีสาน นครราชสีมา
  • Sermsak Tiyasangthong Department of Civil Engineering Faculty of Engineering and Technology Rajamangala University of Technology Isan Nakhon Ratchasima
  • Cherdsak Suksiripattanapong Department of Civil Engineering Faculty of Engineering and Technology Rajamangala University of Technology Isan Nakhon Ratchasima
  • Wisitsak Tabyang Department of Civil Engineering Faculty of Engineering Rajamangala University of Technology srivijaya songkhla
  • Nuntachai Chusilp Department of Civil Engineering Faculty of Engineering Rajamangala University of Technology srivijaya songkhla
  • Chuthamat Laksanakit Department of Civil Engineering Faculty of Engineering Rajamangala University of Technology srivijaya songkhla
Keywords: Soil improvement, Lateritic soil, Biomass, geopolymer, Liquid alkaline solution

Abstract

This research studied unconfined compressive strength (UCS) and indirect tensile strength (ITS) of lateritic soil (LS) improved by biomass ash (BA) geopolymer. The lateritic soil used in the research was marginal lateritic soil (MLS) that did not meet the standard of the department of highway. Solution of sodium silicate (Na2SiO3, NS) and sodium hydroxide (NaOH, NH) were a mixture of alkaline solutions. The MLS/BA ratio of 90:10, NS/NH ratios of 10:90, 30:70, and 50:50 and NH concentration of 8 M were used in this study. soaked- and unsoaked-strengths of MLS-BA geopolymer samples were tested at curing time of 7 days. The maximum UCS and ITS of MLS-BA geopolymer samples were found at MLS/BA ratio of 90:10, and NS/NH ratio of 50:50 which gave soaked- and unsoaked-UCS values of 972 and 1,066 kPa and soaked- and unsoaked-ITS values of 135 and 137 kPa, respectively.

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Published
2022-09-20
How to Cite
[1]
บำรุงพลย., S. Tiyasangthong, C. Suksiripattanapong, W. Tabyang, N. Chusilp, and C. Laksanakit, “Improvement of Marginal Lateritic Soil by Using Biomass Ash Geopolymer”, ncce27, vol. 27, pp. GTE40-1, Sep. 2022.
Issue
Vol 27 (2022): The 27th National Convention on Civil Engineering
Section
Geotechnical Engineering

Copyright (c) 2022 The Engineering Institute of Thailand Under H.M. The King's Pratonage

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บทความทั้งหมดที่ได้รับการคัดเลือกให้นำเสนอผลงานในการประชุมวิชาการวิศวกรรมโยธาแห่งชาติ ครั้งที่ 27 นี้ เป็นลิขสิทธิ์ของ วิศวกรรมสถานแห่งประเทศไทย ในพระบรมราชูปถัมภ์

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