Journal article

Lightly Stabilized Loose Sands with Alkali-Activated Fly Ash in Deep Mixing Applications

Mahdi M Disfani, Alireza Mohammadinia, Arul Arulrajah, Suksun Horpibulsuk, Melvyn Leong

INTERNATIONAL JOURNAL OF GEOMECHANICS | ASCE-AMER SOC CIVIL ENGINEERS | Published : 2021

Abstract

© 2021 American Society of Civil Engineers. Deep mixing using cementitious compounds are an in-situ ground improvement method for improving the strength and compressibility of loose sands. Low-calcium class F fly ash (FA) is a sustainable low-carbon replacement for Portland cement that was utilized for stabilization of loose sand. The unconfined compression strength (UCS) of uniform fine sand and well-graded medium sands, stabilized by alkali-activated FA, were determined and the strengths of optimized blends were compared with the minimum required strength advised by guidelines for cement-treated deep mixed soils. The decementation softening behavior of lightly stabilized zone was investiga..

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Grants

Awarded by Australian Research Council


Awarded by Australian Research Council Industrial Transformation Training Centre for Advanced Technologies in Rail Track Infrastructure


Awarded by National Science and Technology Development Agency under the Chair Professor program


Funding Acknowledgements

This research was supported under Australian Research Council's Linkage Projects funding scheme (Project No. LP 150100043) and the Australian Research Council Industrial Transformation Training Centre for Advanced Technologies in Rail Track Infrastructure (IC170100006) and funded by the Australian Government. The third and fourth authors acknowledge a support from the National Science and Technology Development Agency under the Chair Professor program Grant No. P-19-523-03.