Applied Geotechnics Literature Review 2022

APPLIED GEOTECHNICS
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Contents
INTRODUCTION........................................................................................................... 2
LITERATURE REVIEW.................................................................................................. 2
CASE STUDY............................................................................................................... 4
METHODOLOGY.......................................................................................................... 7
RESULTS AND DISCUSSION........................................................................................ 8
CONCLUSION............................................................................................................ 12
REFERENCES............................................................................................................ 13

INTRODUCTION

The risk of the construction of a structure on the collapsible soils usually presents serious
challenges to the engineers of the geotechnical. This is as a result of the sudden reduction in their
volume immediately after wetting. Collapsible soil basically refers to the unsaturated soils which
are capable of withstanding relatively high pressure without necessarily showing certain changes
in their volume but upon wetting they become susceptible to sudden and large volume reduction.
LITERATURE REVIEW
The collapsible soils are almost found in the entire world within the deposits of soil which are
manmade fills, mudflow, and colluvial, alluvial, eolian, loessial and subaerial. Collapsible soils
refer to any soil that is unsaturated and goes through a radical rearrangement of the particle and
may also have a great reduction in volume during wetting or may have an additional load or
both. These soils are found mostly in arid and semiarid areas and may consist of loose structure
of the soil such as having a huge void ratio and content of water far less than that of saturation.
In most cases, there structure consists of low-unit weight. Sediments are not consolidated but
have coarse particles which are just bonded only at the point of contact by very fine silt or a clay
fraction or both, and even by water surface tension within the water interfaces (Ayadat and
Hanna 2013).
The water addition mainly explains what trigger the collapse of the soil. In some cases, the
collapse may occur due to the application of load or wetting or may be both. Therefore, collapse
may happen either through the increment of the stress beyond that of soil or when the soil
strength is lower than that of the stress. When the consideration is given to the physical
properties or is given the physical basis of the bond of the strength, then in most cases all he
collapsible soil become weak when water is added to them. The reduced strength can be more
immediate especially where the grains are linked by capillarity suction, slower when cemented