Know About the Types of Soils for Light Weight Deflectometer Testing
Different soil types have unique features with optimal
moisture content. Soil types are generally categorized by size of the grain
that is regulated by passing through a series of sieves to determine the
different grain sizes. We drill down through stratum to understand more about
the different types of soil that are used in testing by light weight
deflectometers.
Combination types of soil
Naturally found soil types are generally a combination
of several types. Aggregate soil typically incorporates a wide range of
particles of differing sizes from the maximum to the minimum in order to fill in
the voids. As a result, it forms a dense composition making it suitable for
compaction. Cohesive and granular are the soil types that are used in light
weight deflectometer testing.
1. Cohesive
Soil – Cohesive soil consists of the smallest
particles which are categorized as clay and silt soil types. Clay size ranges
from .00004 to 002 inches and the size of the silt ranges from .0002 to .003
inches. Clay is significantly used as fillers for embankments and conserving
pond beds.
Quality and consistency of cohesive soil - Cohesive soil is generally thick and tightly
compounded together by molecular reaction. Cohesive soil appears plastic and
sticky when damp and can be easily molded, but turns to be stiff when dry.
Proper soil compaction is achieved through even distribution of water content
throughout the soil. Silt has apparently lower coherence when compared to clay.
In spite of the fact, silt is still heavily influenced by water content.
2. Granular
Soil - Granular soil comprises of
both sand and gravel from fine to medium size.
The size of the sand ranges from .003 to .08 inches and gravel size
ranging from .08 to 1.0 inches. Granular soils have better water draining
properties and are suited for constructional activity that demands quick water
draining. The state of the soil may be either dried or drenched so that the
sand and gravel can attain the maximum solidity. Compaction is generally
achieved by vibration or shaking of the particles.
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