Controlling Collapsibility Potential by Partial Soil Replacement

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Naema. A. Ali
Naema. A. Ali
α Alexandria University Alexandria University

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Controlling Collapsibility Potential by Partial Soil Replacement

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Abstract

At or near saturation, collapsible soils undergo a rearrangement of their grains and water removes the cohesive (or cementing) material. In Borg El Arab, near Alexandria Egypt, soils exhibit high susceptibility for collapse when saturated. In this paper, inundation stress has been applied to investigate its effect on the collapse potential and permeability behavior of Borg El Arab soil. Because of the collapse of soil when wetted low bearing capacity and rapid substantial settlement are developed and makes it unsuitable as foundation soil or pavements sub-base in their natural condition. The collapsible soil may be treated by remove and replace method to improve strength. Experimental program was developed to explore the effect of types of compacted replacement on collapsibility potential. A series of tests were carried out to search for the most suitable types of partial replacement and the location of source of surface wetting to evaluate their effects on the reduction of settlement of a footing on collapsible soil when inundation occurs. The results show that inundationstress have strong effect on collapse potential and permeability coefficient. The behavior of a shallow foundation rests on compacted sand / crushed stone layers as partial replacement over treated collapsible soil by pre-wetting and compaction is investigated.

References

18 Cites in Article
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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Naema. A. Ali. 2016. \u201cControlling Collapsibility Potential by Partial Soil Replacement\u201d. Global Journal of Research in Engineering - E: Civil & Structural GJRE-E Volume 16 (GJRE Volume 16 Issue E1): .

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

Keywords
Classification
GJRE-E Classification: FOR Code: 290899
Version of record

v1.2

Issue date

March 12, 2016

Language
en
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Published Article

At or near saturation, collapsible soils undergo a rearrangement of their grains and water removes the cohesive (or cementing) material. In Borg El Arab, near Alexandria Egypt, soils exhibit high susceptibility for collapse when saturated. In this paper, inundation stress has been applied to investigate its effect on the collapse potential and permeability behavior of Borg El Arab soil. Because of the collapse of soil when wetted low bearing capacity and rapid substantial settlement are developed and makes it unsuitable as foundation soil or pavements sub-base in their natural condition. The collapsible soil may be treated by remove and replace method to improve strength. Experimental program was developed to explore the effect of types of compacted replacement on collapsibility potential. A series of tests were carried out to search for the most suitable types of partial replacement and the location of source of surface wetting to evaluate their effects on the reduction of settlement of a footing on collapsible soil when inundation occurs. The results show that inundationstress have strong effect on collapse potential and permeability coefficient. The behavior of a shallow foundation rests on compacted sand / crushed stone layers as partial replacement over treated collapsible soil by pre-wetting and compaction is investigated.

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Controlling Collapsibility Potential by Partial Soil Replacement

Naema. A. Ali
Naema. A. Ali Alexandria University

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