Stabilization of Clayey Soil with Garlic Skin and Rice Husk Ash for Flexible Pavement Construction

Abstract

Soil stabilization is the method of improving the strength characteristics of in situ soil by compaction or by the addition of admixtures. Clay minerals have small particles and a variable degree of crystal perfection. Therefore, construction on clayey soil is really an arduous job due to low strength and swelling problems. In this paper, an attempt is made to determine the improvement in geotechnical characteristics of locally available clayey soil by adding garlic skin and rice husk ash (RHA) as admixtures. Both are agricultural wastes that pollute the environment. The geotechnical properties considered in this study are optimum moisture content (OMC), maximum dry density (MDD), California bearing ratio, and unconfined compressive strength (UCS). Tests are carried out by mixing various amounts of garlic skin and RHA proportionally and the results are analyzed. Microlevel investigations are done by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) test, differential thermal analysis (DTA), and thermo gravimetric analysis (TGA). Test results show that the efficiency of these stabilizing agents depends upon the amount of garlic skin and RHA, type of soil, and field condition. In clayey soil, the addition of 4–6 % garlic skin and 5 % RHA by the weight of soil increased the strength characteristics. SEM, EDS, DTA, and TGA reports also confirm the favorable changes on structure and properties of clay particles with the addition of RHA and garlic skin.

Geotechnical Properties of Effluent-Contaminated Cohesive Soils and Their Stabilization Using Industrial By-Products

“…Improvement of weak soil by using various industrial by-products is a well-established practice worldwide. Several studies have successfully shown the significance of using different industrial by-products like marble dust [22,23], glass dust, blast furnace slag [24,25], rice husk ash [26], sugar cane waste, fly ash [27,28], coal ash [29], xanthan gum [30], etc., for soil improvement. As phase-2 of this research, the possibility of stabilization of leachate contaminated cohesive soils (CL-dyeing, CL-tannery, CH-dyeing and CH-tannery) using marble dust and ground granulated blast furnace slag (GGBFS) was explored.…”

Microscopic Mechanism of Cement Improving the Strength of Lime‐Fly Ash‐Stabilized Yellow River Alluvial Silt

“…e macroscopic mechanical properties of soil essentially depend on its microstructure, so studying soil microstructure characteristics helps to better understand the mechanism of strength improvement [34,35]. Some scholars have used different microscopic methods to study the microstructure characteristics of soil or stabilized soil, including scanning electron microscopy (SEM) [36][37][38][39][40], mercury intrusion porosimetry (MIP) [41][42][43], energy dispersive X-ray spectroscopy (EDS) [44][45][46], and X-ray diffraction [25,47]. Using microscopic technology to study soil microscopic properties has become quite popular and mature.…”

Estabilização De Solo Areno-Argiloso Com Cinza Volante E Cal

“…Com base nos autores já citados, percebe-se que a estabilização de solos representa um melhoramento das caracterisiticas fisicas e mecânicas dos solos, atraves das misturas, sejam com outros solos, com agregados ou outros materiais estabilizantes, permitindo que o meterial estabilizado obtenha uma estabilidade e durabilidade adequada (JAISWAL & LAL 2017;OLIVEIRA et al, 2019).…”