A study of expansive clay behavior using nano chemicals
| Autor: | Bhoomika D. Parsana, Tarak P. Vora, Akshat Verma |
|---|---|
| Rok vydání: | 2023 |
| Předmět: |
010302 applied physics
Expansive clay Compaction Foundation (engineering) 02 engineering and technology General Medicine 021001 nanoscience & nanotechnology 01 natural sciences Swell 0103 physical sciences Particle-size distribution Soil water medicine Environmental science Geotechnical engineering Swelling medicine.symptom 0210 nano-technology Shrinkage |
| Zdroj: | Materials Today: Proceedings. 81:570-576 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2021.04.013 |
| Popis: | One-third area of India's and major part of Gujarat are covered with expansive soil having high clay content s . These soils are problematic to geotechnical engineers as it causes damage to the structure founded on them. Soil swells when they imbibe water and shrink in their volume on drying. Swelling phenomena is one of the top-most challenge faced by the foundation engineer, due to the potential danger of unpredictable movements of structures founded on such types of soils. Various innovative methods have been used to counteract the volume change problem and to safeguard the structures. The use of nano chemical to reduce swelling potential of an expansive soil is a one of the developing research areas in geotechnical engineering. In this experimental work, an attempt is made to modify the swelling potential of expansive soil by using Terrenoseal (organo silane based nano chemical). The effects of adding these chemical s on soil is characterized by various geotechnical laboratory tests such as free swell index, consistency limits, compaction characteristics, swell pressure and unconfined compression test. Further, to study the physico- chemical properties using various analytical techniques such as Fourier Transformation Infrared Spectroscopy (FT-IR), Thermo Gravimetric Analysis (TGA), Particle size analysis, wettability, etc. are performed in the laboratory. The laboratory results indicated that use of nano chemical reduced the swelling potential, shrinkage, free swell index and also increases unconfined compression strength and the maximum dry density. Analytical techniques show improvement in physico-chemical properties of the soil. pH and COD tests for treated and untreated were also performed and the results were within the permissible limits. |
| Databáze: | OpenAIRE |
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