Stabilization of Expansive Clays by Combined Effects of Geopolymerization and Fiber Reinforcement

Syed, Mazhar; GuhaRay, Anasua; Agarwal, Sagar; Kar, Arkamitra

doi:10.1007/s40030-019-00418-3

Cited by 33 publications

(5 citation statements)

References 41 publications

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“…Further, increasing in curing periods 28 to 128 days the stabilized LPS satisfies the minimum strength requirement for the granular base/sub-base. A similar trend of results was observed by the various researchers [14][15][16][17]37]. These strength enhancements show the continuous formation of polymeric reaction and binding of soil particles due to more silicate and aluminate availability for geopolymer formation [17,38].…”

Section: Unconfined Compression Testsupporting

confidence: 86%

Partial Replacement of Conventional Material with Stabilized Soil in Flexible Pavement Design

2022

IJE

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Due to rapid urbanization and industrialization, the construction of roads increases rapidly for easy and fast transportation. Adequate land is not available everywhere to construct good roads; hence, roads are forcefully built on locally available soil such as loose soil or expansive soil. In this paper, an experimental investigation was carried out on low plastic soil (LPS) to enhance engineering properties by using chemical soil stabilization (fly ash-based geopolymer). The design of flexible pavement thickness was carried out for conventional and stabilized soil material using IITPAVE software as per IRC 37 guidelines. The results show the feasibility of fly ash-based geopolymer significant enhancement of strength were observed in terms of unconfined compressive strength (UCS) for various curing days (0 to 128 days), California bearing ratio (CBR), and Resilient modulus (MR). The microstructural analysis via Scanning Electronic Microscope (SEM) and X-Ray Diffraction Analysis (XRD) was also reveling the formation of geopolymeric gel which leads to the dense matrix to soil mass. The flexible pavement thickness significantly reduces with the application of stabilized low plastic soil.

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Section: Unconfined Compression Testsupporting

confidence: 86%

Partial Replacement of Conventional Material with Stabilized Soil in Flexible Pavement Design

2022

IJE

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“…e diffractometer record of the machine and the microstructural features of Palygorskite mineral have been illustrated in Figure 5. Palygorskite, chlorite, muscovite, and quartz are found as the predominant clay minerals [68,85,86]. In the XRD analysis, it was also revealed that diffraction grating of Palygorskite was 10.75 A °and was observed as the abundant clay mineral [87].…”

Section: Experimental Investigationmentioning

confidence: 89%

Isolated Effect and Sensitivity of Agricultural and Industrial Waste Ca-Based Stabilizer Materials (CSMs) in Evaluating Swell Shrink Nature of Palygorskite-Rich Clays

Jalal

Jamhiri

Naseem

et al. 2021

Advances in Civil Engineering

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This paper evaluates the suitability of sugarcane bagasse ash (SCBA) and waste marble dust (WMD) on the geotechnical properties of Palygorskite-rich expansive clays located in northwest Pakistan. These problematic soils exhibit undesirable characteristics which greatly affect the pavements, boundary walls, slab-on-grade members, and other civil engineering infrastructures. A series of geotechnical tests were performed on soil specimens using prescribed percentages of the aforementioned Ca-based stabilizer materials (CSMs). The investigation includes X-Ray Diffraction (XRD) Analysis, Scanning Electron Microscopy (SEM), X-Ray Fluorescence (XRF) tests, and physicomechanical properties such as moisture-density relationship, Atterberg’s limits, swell pressure, and an ANN-based sensitivity analyses of overall swell pressure development. The outcomes of these experimental investigations showed that the addition of CSMs into the expansive soils increased to 4% SCBA and 10% WMD, the plasticity index reduced by 30% and 49%, the volumetric swell decreased from approximately 49% to 86% and 63%, and the swelling pressure reduction was from 189 kPa to 120 kPa and 160 kPa (about 15% and 36%), respectively. It is interesting to note that replacement with specified CSM accelerated the strength of soil at extended curing periods and the optimum improvement in the strength behavior of the soil was also recorded. Moreover, with addition of the respective CSMs, the compactability and strength characteristics were ameliorated, while plasticity was significantly lowered. Given the amount of SCBA and WMD produced annually, their utilization for the stabilization of problematic soils, even in relatively low concentrations, could potentially have a substantial impact on the sustainable reuse of these waste materials.

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“…Recent research has demonstrated that using locally obtained soil stabilizing materials with fly ash and cement can reduce construction costs, especially for geotechnical engineering projects (12,13). Natural or synthetic fibres such as coir, cotton, polypropylene, sisal, polyester and basalt may be used to enhance the mechanical characteristics of weak or soft soils (2,14).…”

Section: Introductionmentioning

confidence: 99%

Unconfined Compressive Strength of Cement Stabilized Soil Using Industrial Wastes Including Optimization of Polypropylene Fiber

Girinivas,

Hanamasagar

2024

IJE

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This Study is focused on suitability of industrial wastes in cement stabilized soil. The investigation is based on Unconfined compressive strength (UCS) tests. Experimental work is carried out to compare the UCS of cement stabilized soil specimens with different proportion of industrial wastes like Iron ore tailing, Quarry dust, Fly ash and Bagasse ash. The mix proportion is designed such that clay content is maintained at 10.5% for fine grained soil and density of 17.5 kN/m 3 . It is observed that the mix comprising industrial wastes and fiber have improved the mechanical properties compared to cement stabilized soil. Fiber addition has improved post peak behavior of soil specimen. The Scanning Electron Microscopy (SEM) microstructure images depict soil particle flocculation, leading to an increase in compressive strength and Energy Dispersive X-ray Spectroscopy (EDS) studies suggest the use of industrial wastes with natural soil helps in strengthening of soil cement stabilization, as well as to minimize the environmental pollution.

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Stabilization of Expansive Clays by Combined Effects of Geopolymerization and Fiber Reinforcement

Cited by 33 publications

References 41 publications

Partial Replacement of Conventional Material with Stabilized Soil in Flexible Pavement Design

Partial Replacement of Conventional Material with Stabilized Soil in Flexible Pavement Design

Isolated Effect and Sensitivity of Agricultural and Industrial Waste Ca-Based Stabilizer Materials (CSMs) in Evaluating Swell Shrink Nature of Palygorskite-Rich Clays

Unconfined Compressive Strength of Cement Stabilized Soil Using Industrial Wastes Including Optimization of Polypropylene Fiber

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