Improving geotechnical properties of soil of hillock slope using crushed recycled concrete aggregates

Islam, Shriful; Islam, Junaidul; Hoque, Nur Md. Robiul; Hasan, Khairul

doi:10.1016/j.jer.2023.100139

Cited by 10 publications

(6 citation statements)

References 27 publications

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“…On the other hand, AK values were within the allowable limits in Sahiwal compared to Sargodha. The results are similar with the results of (Islam et al, 2023). This can be contributed to the parent material which consists of dolerites, rhyolites, slates, greywackes and other geological formations supporting K supply into the soil (Migoń and Lidmar-Bergström, 2001).…”

Section: Discussionsupporting

confidence: 86%

Spatial distribution and quantification of plant-available nutrients and soil properties in Punjab, Pakistan

Rebi,

Wang,

Hussain

et al. 2023

Preprint

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The quantification and spatial distribution of nutrients are crucial for agriculture production and protection. However, locally quantifying these soil variables is challenging in areas where transitions change over short distances, making correct land-use management difficult. This research paper aimed to quantify and analyze the spatial distribution of micronutrients (zinc, copper, iron, manganese and boron), macronutrients (potassium and phosphorus), as well as soil characteristics (electrical conductivity, pH, organic matter, and soil saturation) in the agricultural districts of Sahiwal and Sargodha in Punjab, Pakistan. The mean available phosphorus (AP) concentrations ranged from 7.37 to 7.00 mg/kg in Sahiwal and Sargodha, respectively, falling below the permissible range in both regions. Conversely, potassium (K) levels were within the recommended range, with values ranging from 110 to 280 mg/kg in Sahiwal but lower in Sargodha. Zinc (Zn) concentrations ranged from 1.6 to 0.4 mg/kg in Sahiwal and 1.8 to 0.3 mg/kg in Sargodha, with acceptable levels in Sahiwal but not in Sargodha. Copper (Cu) concentrations in both regions met acceptable standards. Mean iron (Fe) values were 5.6 and 5.2 mg/kg in Sahiwal and Sargodha, respectively, exceeding the limit in Sahiwal but falling below in Sargodha. Manganese (Mn) concentrations were acceptable in Sargodha but low in Sahiwal while boron (B) levels were below acceptable thresholds in several Sargodha samples but within limits in Sahiwal. Some Sahiwal samples exhibited excessively high pH, unlike in Sargodha. Nevertheless, both areas adhered to permissible soil saturation levels, except for one Sahiwal sample with elevated electrical conductivity (EC). Soil organic matter (SOM) content ranged from 0.57% to 0.52% in Sahiwal and Sargodha, respectively, with the majority of samples from both regions falling below permissible SOM ranges. The results suggest that quantity and spatial distribution are affected by locality, and therefore, exciting land-use management protocols should be adopted for spatial distribution and changes, not just absolute quantities. This study provides practical recommendations for farmers, researchers, and policymakers to enhance agricultural production and sustainability in Sahiwal and Sargodha.

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Section: Discussionsupporting

confidence: 86%

Spatial distribution and quantification of plant-available nutrients and soil properties in Punjab, Pakistan

Rebi,

Wang,

Hussain

et al. 2023

Preprint

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“…Typically, a vibroflot is used to create, in the soil to be improved, a granular column containing stiffer sand/ stone with a relatively high friction angle, creating a composite in the ground with greater average strength and stiffness than that of the untreated in situ ground (McCabe et al 2007;Vahedian et al 2014;Najjar et al 2012). Several studies have demonstrated that installing a granular column typically improves the shear strength and settlement behaviour of the reinforced soil compared to the unreinforced soil (Abdelhamid et al 2023;Borges 2023;Islam et al 2023;Mazumder et al 2023Mohamadi Merse et al 2023Shukla et al 2023). The column backfill material is commonly selected based on suitability, economy and availability (Baumann and Bauer 1974;Zukri and Nazir 2018).…”

Section: Introductionmentioning

confidence: 99%

Shear Strength and Consolidation Behaviour of Kaolin Clay Reinforced with a Granular Column Backfilled with Crushed Waste Glass

Kazmi,

Serati,

Williams

et al. 2024

Geotech Geol Eng

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Granular columns are commonly used for ground improvement. However, minimal research is presently available on the effect of backfill particle size on the geotechnical performance of granular column-reinforced soil. Geo-environmentally, using crushed waste glass (CWG) as a sustainable replacement for depleting traditional construction sands could offer a cleaner feedstock to backfill granular columns while helping recycle growing stockpiles of waste glass, potentially supporting the circular economy transition and decarbonisation of the construction industry. Given these multi-pronged motivations, this study investigated the shear strength and consolidation behaviour of kaolin reinforced with a CWG granular column. Three different particle size ranges (PSR) of CWG were discretely used to install a granular column in the kaolin bed, including fine (0.50–1.0 mm), medium (1.0–1.7 mm) and coarse (1.7–3.35 mm) particles with median particle sizes of 0.78 mm, 1.42 mm and 2.30 mm, respectively. The geocomposite containing a medium CWG column showed the highest increase in friction angle, increasing from 14.0° for kaolin only specimens to 20.7° for the geocomposites. Similarly, the consolidation behaviour of reinforced kaolin (geocomposites) was typically superior to that of kaolin only specimens. Notably, installing a coarse, medium or fine CWG column decreased the average compression index (Cc) of the geocomposites by almost 17%, 35% or 50%, respectively, compared to that of the kaolin only specimens. Given the promising results of this initial study, some suggestions are provided for future studies on assessing the application of CWG as an alternative backfill and sustainable geomaterial in granular column construction.

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“…Rezaei-Hosseinabadi et al [ 110 ] and Eyo et al [ 111 ] both observed a lower compression index and settlement in the clay soil stabilized by cementitious materials, including steel slags, and alkaline metal based additives. The cementitious behavior of the LRF content in soil samples enhanced the stabilization, strength, soil-LRF interaction, and less void ratio, which resulted in improved soil samples having higher shear strength with less settlement [ 17 , 111 ]. The data shown in Table 8 reveals that 20% LRF is the optimum content for the soil samples used in this research.…”

Section: Resultsmentioning

confidence: 99%

“…Such properties of soil show their tendency to be changed in volume with the changes in moisture content [ 7 , 8 ], lower shear strengths, higher compressibility [ 2 , [9] , [10] , [11] , [12] ], high susceptibility to shrinking and swelling [ 2 , 5 , [13] , [14] , [15] ], higher plasticity, and low permeability [ 12 ], which trigger the failure of bearing capacity and unwanted settlement. Exchanging or replacing the soft soil with superior property belonging soil is not always feasible, while stabilization has economic and environmental benefits for reinforcing such soil [ 16 , 17 ]. Besides various conventional methods, with the limited resources available, soft ground improvement inspires researchers to think about the circular economy for reusing industrial byproducts [ [18] , [19] , [20] ].…”

Section: Introductionmentioning

confidence: 99%

An experimental investigation on utilization of ladle refined furnace (LRF) slag in stabilizing clayey soil

Islam,

Ara,

Islam

2024

Heliyon

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Improving geotechnical properties of soil of hillock slope using crushed recycled concrete aggregates

Cited by 10 publications

References 27 publications

Spatial distribution and quantification of plant-available nutrients and soil properties in Punjab, Pakistan

Spatial distribution and quantification of plant-available nutrients and soil properties in Punjab, Pakistan

Shear Strength and Consolidation Behaviour of Kaolin Clay Reinforced with a Granular Column Backfilled with Crushed Waste Glass

An experimental investigation on utilization of ladle refined furnace (LRF) slag in stabilizing clayey soil

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