Various techniques of soil improvement

Jun 28th, 2015
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Soil improvement in its broadest sense is the alteration of any property of a soil to improve its engineering performance. This may be either a temporary process to permit theconstruction of a facility or may be a permanent measure to improve the performance of the completed facility.

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Soil improvement in its broadest sense is the alteration of any property of a soil to improve its engineering performance. This may be either a temporary process to permit theconstructionof a facility or may be a permanent measure to improve the performance of the completed facility. The result of an application of a technique may be increased strength, reduced compressibility, reduced permeability, or improved ground water condition.Need for Stabilization of Earth RoadsAn earth road is one whose foundation and wearing surface is composed of solely of the natural soil present originally on the site. Soils can be classified into two categories cohesion less and cohesive soils. It has been observed that regions that are predominantly clayey do not usually have sandy materials. Clays must be considered as very important and often determining soil component since it has two objectionable qualities that make it the most troublesome of the materials to be dealt with. It swells when subjected to wetting, and shrinks with drying.Clays and silts are low-grade construction materials, which find use in impervious elements such as cores (dams), cut-offs, they are poorly drained, and they shrink and swell. Also, clays when wet lose all strength; they are highly compressible, producing undesirable settlement as sub-grades of highways. Sands, though, having good drainage properties are also not suitable, as they lack cohesion and spread laterally under vertical loads. Thus, eith

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