Utilizing expansive soil treated with phosphogypsum and lime in pavement construction

Results in Engineering, Journal Year: 2023, Volume and Issue: 19, P. 101256 - 101256

Published: June 23, 2023

This study investigated the use of phosphogypsum (PG) in long term as a construction material, especially pavement structures. aimed to investigate effect increasing PG percentages on geotechnical parameters Expansive Soil. Extensive laboratory tests were conducted both natural and PG-stabilized soil mixtures examine their compaction properties, consistency limitations, swelling linear shrinkage, pH values, unconfined compressive strength (UCS), California bearing ratio (CBR), scanning electron microscopy (SEM), X-ray Diffraction (XRD). The results showed that addition would significantly reduce plasticity, swell potential. Despite these improvements, concluded treating using only did not affect its physical properties sufficiently be considered subbase. As an alternative, lime was supplemented soil-PG mixture noticed blend 30% 4% improved strength, thereby rendering it appropriate for utilization subbase layer. Mechanistic-Empirical Pavement Design Guide (MEPDG) utilized assess performance sections formed with PG-treated untreated soils. result, this contributes development environmentally sustainable waste management system while also demonstrating potential uses roadway construction.

Language: Английский

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Study on the improvement of soil properties using hydrophilic-hydrophobic biopolymer crosslinking

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 415, P. 135101 - 135101

Published: Jan. 23, 2024

Language: Английский

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The influence of volcanic ash (VA) on the mechanical properties and freeze-thaw durability of lime kiln dust (LKD)-stabilized kaolin clayey soil

Results in Engineering, Journal Year: 2024, Volume and Issue: 24, P. 103077 - 103077

Published: Oct. 9, 2024

Language: Английский

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Embodied Energy in the Production of Guar and Xanthan Biopolymers and Their Cross-Linking Effect in Enhancing the Geotechnical Properties of Cohesive Soil

Buildings, Journal Year: 2023, Volume and Issue: 13(9), P. 2304 - 2304

Published: Sept. 10, 2023

Traditional soil stabilization techniques, such as cement and lime, are known for their menacing effect on the environment through heavy carbon emissions. Sustainable methods grabbing attention, utilization of biopolymers is surely one among them. Recent studies proved efficiency in enhancing geotechnical properties to meet requirements construction industry. The suitability biopolymer application different soils still unexplored, footprint analysis (CFA) crucial promoting a promising sustainable method. This study attempts investigate out-turn cross-linked exhibiting plasticity characteristics (Medium & High compressibility) determine Embodied factor (ECF) selected biopolymers. Guar (G) Xanthan (X) were at proportions enhance soils. Atterberg’s limits, Compaction characteristics, Unconfined Compressive Strength chosen performance indicators, values analyzed combinations before after cross-linking. test results have shown that limits increased with addition biopolymers, it attributed formation hydrogels matrix. reveal Optimum Moisture Content (OMC) biopolymer-modified increased, Maximum Dry Density (MDD) reduced due resistance offered by hydrogel against compaction effort. Soils amended cured 14, 28, 60 days an appreciable improvement (UCS) results. Microlevel was carried out using SEM (Scanning Electron Microscopy) FTIR (Fourier-transform infrared spectroscopy) formulate mechanism responsible alteration targeted indicators cross-linking soil. embodied energy production both calculated, obtained ECF 0.087 1.67, respectively.

Language: Английский

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Mechanical, durability, and microstructure of soft clay stabilised with anionic biopolymer

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 417, P. 135343 - 135343

Published: Feb. 1, 2024

Language: Английский

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Ultra-compressed earth block stabilized by bio-binder for sustainable building construction

Case Studies in Construction Materials, Journal Year: 2024, Volume and Issue: 21, P. e03523 - e03523

Published: July 13, 2024

Language: Английский

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Xanthan biopolymer-based soil treatment effect on kaolinite clay fabric and structure using XRD analysis

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: July 19, 2023

In this study, we evaluated the impact of xanthan gum biopolymer (XG) on kaolinite fabrics using X-ray diffraction (XRD) and ensuing changes in compaction behavior shear resistance soils. The XRD peak analysis revealed that XG changed into face-to-face associations. Moreover, environmental scanning electron microscopy showed formation XG-bridges between particles, resulting change subsequently improving to external forces. Consequently, as content increased, maximum dry density decreased, undrained strength increased. viscous hydrogels produced a higher optimal moisture increased force. This study affects mechanical properties through changing (up 0.5% XG-to-kaolinite mass ratio) absorbing pore-fluids (excess over ratio).

Language: Английский

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A comparison of temperature and freeze-thaw effects on high-swelling and low-swelling soils stabilized with xanthan gum

Results in Engineering, Journal Year: 2024, Volume and Issue: 25, P. 103719 - 103719

Published: Dec. 10, 2024

Language: Английский

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A State-of-the-Art Review on Sustainable Chemical Stabilizers for Expansive Soils

Indian geotechnical journal, Journal Year: 2024, Volume and Issue: 54(3), P. 998 - 1016

Published: Feb. 14, 2024

Language: Английский

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Pore fluid salinity effects on post-stabilization performance of cement-treated Marl

Case Studies in Construction Materials, Journal Year: 2024, Volume and Issue: 20, P. e03193 - e03193

Published: April 24, 2024

Soil improvement using chemical admixtures has been extensively investigated in the recent past and these are abundantly being used on various construction projects. However, there is a need to elucidate long-term performance of stabilized geomaterials under aggressive pore fluid environments such as high salinity groundwater coastal areas. This study presents effects concentration post-stabilization behavior cement-treated Marl specimens brine solution from Sabkha deposits rejected water treatment plant. Unconfined compressive strength (UCS), mineralogy, chemical, microstructural evaluations have carried out this regard. minerals like albite muscovite completely leached samples after 28 days soaking saline environment. A new mineral Attapulgite was formed at levels fluid. Significant changes composition were also observed phases experiments. Moreover, all levels, UCS initially increased maximum 75% which later reduced value less than original whereas elastic modulus (E50) period progressed. Lastly, it emphasized that engineering properties treated soils exposed fluids should be carefully assessed for reliable prediction geotechnical structures.

Language: Английский

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