Modified Textural Soil Classification

Abstract

In this world, different types of soils are present. These soils are consisting of different types of soil particles. The engineering properties of soil are defined on the basis of particles size and consistency limits. Soil was classified into different divisions and subdivisions by different organizations. International classification, highway research board, MIT, AASHTO and many other classifications are available, but these classifications are having limitations in describing or defining the soil and soil mass. Due to this reason, a new classification of soil is proposed with the name modified textural soil classification. The modified textural classification is developed using the concept of two existing soil classifications, namely the international classification system of soil and textural classification system of soil. The original textural classification systems of soil used triangle for soil classification based on particle size distribution considering sand, silt and clay as the type of particles. Modified textural soil classification has introduced two overlapping triangles, coarse and fine triangle based on particle size considering gravel, sand, majla, silt, clay and ultra-clay as the type of particles. In this way, another triangle is formed, namely middle triangle which is more helpful in classifying soil. In modified textural classification, the two triangles are overlapped at the 50%.