Circular-Plate Load Tests on Bounded Cemented Layers above Weak Cohesive-Frictional Soil

Consoli, Nilo César; Rossi, Jamile Giriboni; Festugato, Lucas; Ruver, Cesar Alberto; Filho, Hugo Carlos Scheuermann; Foppa, Diego; Carretta, Mariana da Silva; Leon, Helena Batista

doi:10.1061/(asce)gt.1943-5606.0002144

Cited by 18 publications

(5 citation statements)

References 12 publications

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“…Additionally, two or three radial cracks developed from the center to the edges. Similar failure modes and cracking patterns were found by [11,24], soil stabilized with Portland cement. In general, there was a proportionality between the load capacity and the reinforced diameter-for the same load, lower displacements were observed for the higher diameter.…”

Section: Spread Footing Testingsupporting

confidence: 75%

“…Additionally, two or three radial cracks developed from the center to the edges. Similar failure modes and cracking patterns were found by [11,24], soil stabilized with Portland cement.…”

Section: Spread Footing Testingsupporting

confidence: 75%

“…Alkaline activation is, in general terms [24][25][26][27], a reaction that occurs when materials rich in silica (SiO 2 ) and alumina (AlO 4 ) come into contact with a highly alkaline medium which is usually provided by alkaline substances such as sodium (Na + ) or potassium (K + ). These alkaline substances initially increase the pH of the medium, accelerating the solubility and promoting the dissolution of elements such as silica and alumina present in the material; that is, there is a phase of breaking the ionic and covalent bonds of the vitreous phase of the raw material and then silica and alumina colloids are released into the solution forming a coagulated structure (gel) favoring then condensation reactions that lead, finally, to the polymerization of the structure resulting in compounds with greater resistance to compression.…”

Section: Introductionmentioning

confidence: 99%

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Live-Scale Testing of Granular Materials Stabilized with Alkali-Activated Waste Glass and Carbide Lime

et al. 2021

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The increasingly strong search for alternative materials to Portland cement has resulted in the development of alkali-activated cements (AAC) that are very effective at using industrial by-products as raw materials, which also contributes to the volume reduction in landfilled waste. Several studies targeting the development of AAC—based on wastes containing silicon and calcium—for chemical stabilization of soils have demonstrated their excellent performance in terms of durability and mechanical performance. However, most of these studies are confined to a laboratory characterization, ignoring the influence and viability of the in situ construction process and, also important, of the in situ curing conditions. The present work investigated the field application of an AAC based on carbide lime and glass wastes to stabilize fine sand acting as a superficial foundation. The assessment was supported on the unconfined compressive strength (UCS) and initial shear modulus (G0) of the developed material, and the field results were compared with those prepared in the laboratory, up to 120 days curing. In situ tests were also developed on the field layers (with diameters of 450 and 900 mm and thickness of 300 mm) after different curing times. To establish a reference, the mentioned precursors were either activated with a sodium hydroxide solution or hydrated with water (given the reactivity of the lime). The results showed that the AAC-based mixtures developed greater strength and stiffness at a faster rate than the water-based mixtures. Specimens cured under controlled laboratory conditions showed better results than the samples collected in the field. The inclusion of the stabilized layers clearly increased the load-bearing capacity of the natural soil, while the different diameters produced different failure mechanisms, similar to those found in Portland cement stabilization.

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Section: Spread Footing Testingsupporting

confidence: 75%

“…Additionally, two or three radial cracks developed from the center to the edges. Similar failure modes and cracking patterns were found by [11,24], soil stabilized with Portland cement.…”

Section: Spread Footing Testingsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Live-Scale Testing of Granular Materials Stabilized with Alkali-Activated Waste Glass and Carbide Lime

et al. 2021

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“…Recent studies [11,12] used soil-cement reinforcement to increase the bearing capacity of foundations and reduce settlement. It was suggested that the layer of soil and cement function as a single component at the same depth as the reinforcement base.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Circular Footings on Cohesive Soils Confined With a Shear Resistance Wall

Al-Wakel¹

2022

GEOMATE

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In geotechnical applications, soil with a low shear strength exhibits a low bearing capacity and excessive settlement. In this paper, to mitigate the effects of such problems, a confining cylindrical wall is utilized to prevent the development of shear stresses in the soil. The behavior of circular footings confining with a cylindrical wall was investigated through a series of experiments carried out in a laboratory on smallscale models of foundations. The bearing capacity and settlement of foundations were studied in relation to the impact that wall depth and thickness had on these characteristics. According to the results, an increase in wall depth and thickness leads to an increase in the carrying capacity of shallow foundations and a reduction in a settlement. In addition, a theoretical model for determining the ultimate bearing capacity of such foundations is presented. The results of the physical modeling were presented as normalized curves in order to validate the developed theoretical model. Comparing the theoretical results to those of the current experimental investigation shows a good agreement.

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“…XX Congresso Brasileiro de Mecânica dos Solos e Engenharia Geotécnica IX Simpósio Brasileiro de Mecânica das Rochas IX Simpósio Brasileiro de Engenheiros Geotécnicos Jovens VI Conferência Sul Americana de Engenheiros Geotécnicos Jovens 15 a 18 de Setembro de 2020 -Campinas -SP Técnicas de melhoramento de solos são utilizadas a fim promover comportamentos mais satisfatórios, por exemplo, quanto à resistência e durabilidade de um determinado solo. Estudos a respeito das técnicas de solo-cimento e solo-cal avançaram consideravelmente nos últimos anos (Consoli et al, 2014;Consoli, 2013;Consoli et al, 2014;Consoli et al, 2019a;Consoli et al, 2019b). Um desafio atual é tornar essas técnicas mais sustentáveis.…”

Section: Introductionunclassified

Melhoramento de um Solo Siltoso: Análise Experimental Utilizando Cinza de Casca de Arroz e Cal

Schulz¹,

Rockembach²,

Oliveira³

et al. 2020

Congresso Brasileiro De Mecânica Dos Solos E Engenharia Geotécnica

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Circular-Plate Load Tests on Bounded Cemented Layers above Weak Cohesive-Frictional Soil

Cited by 18 publications

References 12 publications

Live-Scale Testing of Granular Materials Stabilized with Alkali-Activated Waste Glass and Carbide Lime

Live-Scale Testing of Granular Materials Stabilized with Alkali-Activated Waste Glass and Carbide Lime

Behavior of Circular Footings on Cohesive Soils Confined With a Shear Resistance Wall

Melhoramento de um Solo Siltoso: Análise Experimental Utilizando Cinza de Casca de Arroz e Cal

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