Expansion reduction of clayey soils through Surcharge application and Lime Treatment

López-Lara, Teresa; Hernández-Zaragoza, Juan Bosco; Rangel, Jaime; Rojas, Eduardo; López-Ayala, S.; Castaño, V. M.

doi:10.1016/j.cscm.2017.06.003

Cited by 15 publications

(6 citation statements)

References 4 publications

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“…The oriented extracted blocks of sediment (approximately 50 x 50 cm on each side, see Figure 2b) were covered with cellophane and immediately transported to the laboratory to preserve their moisture conditions. The water content did not vary substantially after storage if compared to in situ values; an average value of 29% of gravimetric water content is like the optimal water content of 30.95% reported by Lopez-Lara et al (2012) and López-Lara et al (2017). This slight variation in water content indicates an effective method of the preservation and the high level of compaction of these sediments and therefore, the restricted fluid flow properties characterizing low permeable materials (Ewy 2015;Balasubramanian 2017).…”

Section: Physical Properties and Mineralogy Of Clayey Sedimentssupporting

confidence: 53%

“…The dominant granular facies in the Jurica site are inorganic clays with high swelling potential varying on the initial water content (10.58 %-14.6 %) (Lopez-Lara et al 2012;Pérez-Rea et al 2015;López-Lara et al 2017). Alkaline conditions (pH 8.05 at 21.5°C) were reported for this clay by Lopez-Lara et al, (2012) and López-Lara et al (2018).…”

Section: Physical Properties and Mineralogy Of Clayey Sedimentsmentioning

confidence: 83%

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Evaluation of the mechanical anisotropy of lacustrine smectite clays by triaxial test analysis

Jiménez-Camargo

Carreón‐Freyre

2022

Preprint

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This paper describes the role of fabric anisotropy during clayey soil deformation. A set of triaxial tests was performed on vertical and horizontal specimens of undisturbed smectite lake sediments from Jurica, Queretaro in Mexico. The results allowed to analyze the influence of bedding and discontinuities on the mechanical behavior of Jurica clays after failure. Tests with applied low strain rates allowed pore pressure equalization within specimens with different gravimetric water content and degree of saturation. Shear failure results of undrained tests showed that deformation distributes differently in both horizontal and vertical directions and that stress may be dissipated by pore collapses, fractures and particle deformation. The experimental evidence suggests that microfabric is a relevant variable in the overall mechanical response of clayey sediments that depends on the natural fabric (bedding and discontinuities), mineralogy, and water content. A detailed analysis of Young´s Moduli (E) showed the high variability of this parameter from 108 to 409 kg/cm2 (calculated at 30% of σdmax) and its dependence on the orientation of the specimen and the water content. In addition, p’-q’ graphs illustrate the relevance of considering mechanical anisotropy in clays and provide further insights to understand the role of smectites in progressive shear deformation.

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Section: Physical Properties and Mineralogy Of Clayey Sedimentssupporting

confidence: 53%

Section: Physical Properties and Mineralogy Of Clayey Sedimentsmentioning

confidence: 83%

Evaluation of the mechanical anisotropy of lacustrine smectite clays by triaxial test analysis

Jiménez-Camargo

Carreón‐Freyre

2022

Preprint

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“…Stabilization, in a broad sense, incorporates the various methods used to modify the properties of a soil to improve its engineering performance [4]. The most common method for improving the physical and mechanical properties of clay soils is stabilization with the use of binder materials such as cement and lime [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…The most common method for improving the physical and mechanical properties of clay soils is stabilization with the use of binder materials such as cement and lime [5,6].…”

Section: Introductionmentioning

confidence: 99%

Natural Fibers: An Alternative for the Reinforcement of Expansive Soils

et al. 2022

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The reinforcement of soils is the technique that geotechnical engineers currently use to improve the shear strength and bearing capacity parameters, especially when the land available for the execution of a project is not able to withstand the structural loads to which it is subjected. One of the techniques, used for this purpose since ancient times, is the incorporation of fibers into the soil matrix; however, great interest in its study has only begun in the last two, mainly because it constitutes a low-cost and environmentally friendly alternative. In this paper, a brief bibliographic review is presented on seven of the natural fibers that are currently used in order to improve the mechanical behavior of expansive clay soils (bamboo, jute, coco, palm, sugar cane bagasse, rise husk, and sawdust). It can be concluded that in many cases, the addition of certain amounts of natural fibers increases the parameters of resistance to the cutting of soils.

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“…Expansive subgrade materials in road pavement structures can cause defects and failure in road pavement structure leading to high cost of maintenance and sometimes total redesign and reconstruction of the road infrastructure. The damage caused by expansive subgrade in road structure runs into many billions of dollars, which is notably more than damages caused by flooding [1]. For instance, the UK economy alone over the past ten years has suffered costs in excess of GBP 3 billion, making it the most damaging geohazard [2,3].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Engineering Properties of Subgrade Materials Using Processed Waste: A Review

et al. 2021

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Subgrade materials refer to the original ground underneath a road pavement, when these materials are made up of expansive soil it is referred to as expansive subgrade. Sometimes, these materials do not have sufficient capacity to support the weight of the road pavement and traffic load, which means they require some form of modification and re-engineering to enhance their load capacity. Chemical modification techniques using traditional stabilisers (such as cement and lime) have proved to be an effective means of subgrade stabilisation. However, high costs and environmental concerns associated with the use and production of these additives have highlighted the need for more sustainable and environmentally friendly substitutes. This study reviews the use of industrial by-products and other waste materials used for subgrade stabilisation, focusing on the sustainability of using processed wastes and how they alter the engineering properties of weak subgrade, compared to the use of cement and also reviews the availability of processed waste materials in quantities sufficient to meet the current demand for subgrade stabilisation. The findings illustrate that, processed waste is less expensive and has better sustainability credentials compared to cement. Moreover, processed wastes are available in sufficient quantities to meet existing demands for subgrade stabilisation. Therefore, it is recommended that the use of processed wastes should be promoted and utilised to improve and enhance the geotechnical properties of weak subgrade materials where possible.

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Expansion reduction of clayey soils through Surcharge application and Lime Treatment

Cited by 15 publications

References 4 publications

Evaluation of the mechanical anisotropy of lacustrine smectite clays by triaxial test analysis

Evaluation of the mechanical anisotropy of lacustrine smectite clays by triaxial test analysis

Natural Fibers: An Alternative for the Reinforcement of Expansive Soils

Enhancing the Engineering Properties of Subgrade Materials Using Processed Waste: A Review

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