Open AccessEFFECT OF FLY ASH, HUMAN HAIR FIBER AND PHOSPHOGYPSUM ON PROPERTIES OF EXPANSIVE SOILS
Author(s) -
Mir Tariq Khurshid,
Iftikhar H Wani,
Neeraj Sharma
Publication year - 2019
Publication title -
international journal of engineering applied science and technology
Language(s) - English
Resource type - Journals
ISSN - 2455-2143
DOI - 10.33564/ijeast.2019.v04i07.064
Subject(s) - phosphogypsum , expansive clay , fly ash , expansive , fiber , soil water , geotechnical engineering , geology , environmental science , materials science , soil science , composite material , ecology , biology , compressive strength , raw material
Nearly 51.8 million hectares of land area in India are covered with Expansive soil. The property of these expansive soils is that they are very hard when in dry state, but they lose all of their strength when in wet state. In context to this property of expansive soils, these soils pose numerous problems worldwide that serve as challenge to overcome for the Geotechnical engineers. One of the most important aspects for construction purposes is soil stabilization, which is used widely in foundation and road pavement constructions; this is because such a stabilization regime improves engineering properties of the soil, such as volume stability, strength and durability. In this process, removal or replacing of the problematic soil is done; replacement is done by a better quality material, or the soil is treated with an additive. In the present study, addition of fly ash, Phosphogypsum and Human Hair Fiber in various proportions results in increase in plasticity of the expansive soil, and increase in workability by changing its grain size and colloidal reaction. Analysis of the formerly found result exposes the potential of fly ash, PG and HHF as additives could be used for improving the engineering properties of expansive soils. Keywords— Expansive Soil, Fly Ash, Human Hair Fibre, Phosphogypsum Liquid limit, Unconfined compressive strength, CBR