Strength and Equivalent Modulus of Cement Stabilized Lateritic with Partial Replacement by Fly Ash and Rice Husk Ash

Authors

  • Raksiri Sukkarak King Mongkut’s University of Technology North Bangkok
  • Bordin Thangjaroensuk King Mongkut’s University of Technology Thonburi
  • Warat Kongkitkul King Mongkut’s University of Technology Thonburi
  • Pornkasem Jongpradist King Mongkut’s University of Technology Thonburi

DOI:

https://doi.org/10.4186/ej.2021.25.10.13

Keywords:

lateritic, fly ash, rice husk ash, strength, equivalent modulus

Abstract

The effect of industrial/agricultural waste materials including fly ash (FA) and rice husk ash (RHA) as Portland cement replacement on properties of stabilized lateritic soil as a road construction material is investigated. The compacted lateritic soil samples treated with Portland cement at 1%, 2% and 3% by weight of the dry soil and three different amounts (10%, 20% and 30%) of FA and RHA for replacing cement are prepared and the unconfined compression and cyclic loading tests are conducted on 28 days curing samples. The equivalent modulus (Eeq) defined as the average linear portion from the unloading/reloading cycles, is used to quantify the effects of stress level on the cyclic resistance of the treated lateritic. Based on the compressive strength results, both replacement materials have demonstrated potential applications in lateritic soil stabilization. Overall, the RHA shows a better efficiency than FA for replacement particularly at 2% cement content. Based on cyclic loading tests, the Eeq values increase as the stress level increases for all samples. The FA and RHA notably enhance the Eeq values of cement treated lateritic.

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Author Biographies

Raksiri Sukkarak
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Department of Teacher Training in Civil Engineering, Faculty of Technical Education, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand

Bordin Thangjaroensuk
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Civil Engineering Department, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Rd., BangMod, Thung Khru, Bangkok 10140, Thailand

Warat Kongkitkul
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Civil Engineering Department, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Rd., BangMod, Thung Khru, Bangkok 10140, Thailand

Pornkasem Jongpradist
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Civil Engineering Department, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Rd., BangMod, Thung Khru, Bangkok 10140, Thailand

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Published In
Vol 25 No 10, Oct 31, 2021
How to Cite
[1]
R. Sukkarak, B. Thangjaroensuk, W. Kongkitkul, and P. Jongpradist, “Strength and Equivalent Modulus of Cement Stabilized Lateritic with Partial Replacement by Fly Ash and Rice Husk Ash ”, Eng. J., vol. 25, no. 10, pp. 13-25, Oct. 2021.
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