Published date: Apr 13 2020

Journal Title: KnE Engineering

Issue title: REMINE International Conference on Valorization of Mining and Industrial Wastes into Construction Materials By Alkali-activation

Pages: 157–166

DOI: 10.18502/keg.v5i4.6806

Nassima bakirnassima.bakir@univ-msila.dzDepartment of Civil Engineering, Faculty of Technology, University of M’sila, M’sila 28000, Algeria

Khelifa AbbecheDepartment of Civil Engineering, Faculty of Technology, University of Batna2, Batna 5000, Algeria

Gérard PanczerInstitute Light and Matter, UMR5306 Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne cedex, France

Larbi BelagraaDepartment of Civil Engineering, Faculty of Technology, University of M’sila, M’sila 28000, Algeria

Soil collapse remains a major issue affecting structural foundations, particularly in arid and semi-arid zones where humidification is a key factor contributing to the collapse. Much research has been devoted to identifying treatment methods which enhance the stability and load-bearing capacity of this type of soil. This paper investigates the potential advantages of the addition of milled glass fibers (F_g ). Soil samples were prepared at different compaction energies and various water contents, then treated with different percentages of milled glass fiber, before being submitted to the simple consolidation odometer test. The results obtained in this study showed that soil samples treated with an optimal dosage of 6% of milled glass fibers compacted at 60 blows and humidified at 6% of moisture content. This represents an improvement in the stability of the soil, reducing the collapse potential (C_p) from 11.95% to 1.62%. This treatment method produces soil which can be classified as a moderate risk foundation soil according to the Jennings and Knight evaluation metrics (1975).

Keywords: collapsible soils, arid zones, fiberglass, odometer test.

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