Durability of Cementitious Phases in Lime Stabilization: A Critical Review

Padmaraj, Dhanalakshmi; Arnepalli, Dali Naidu

doi:10.1007/978-981-15-6237-2_40

Cited by 8 publications

(2 citation statements)

References 24 publications

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“…For each sample, the average was used to represent it. Less extractible water was available, and the existing water was used up by hydration and pozzolanic reaction processes; therefore, more water was added ( 64 , 65 ). This technique appears to be the most effective for determining the electrical conductivity of less readily extractable soil fluid, despite diluting the initial soil fluid and subsequently reducing its electrical conductivity.…”

Section: Methodsmentioning

confidence: 99%

Experimental Evaluation of Stiffness Properties of a Quicklime-Stabilized Clay Subgrade Using a Resistivity Plate Loading Testing Device

Ackah

Yang

Feng

2023

Transportation Research Record: Journal of the Transportation R

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Quicklime-mixing in soil stabilization applications for subgrade construction is crucial to its engineering performance and controlling quicklime and water content. Modern construction quality control devices and methods have improved construction quality control substantially. Certain devices, meanwhile, still need to be studied more thoroughly. This study used the resistivity plate loading device to assess the physical and stiffness properties of compacted quicklime-stabilized subgrade instantaneously and simultaneously for compaction quality control. The Taguchi L9 orthogonal array was used to design the experiment considering the dry density, test time, quicklime, and water content at various input factor levels. The pH, cation exchange capacity, conductivity, X-ray diffraction analysis (XRD), and scanning electron microscope (SEM) tests were further conducted. Analysis of the Taguchi experiment shows that the average soil electrical resistivity responses increased with dry density, test time, and quicklime content, and were highest at low water content. Whether the dry density, quicklime content, and test time are positively or negatively related to the average subgrade reaction modulus depends on the level of the water content. Regression equations are proposed to predict the average subgrade reaction modulus and soil electrical resistivity. The tested soils’ pH, conductivity, and cation ion exchange capacity properties were directly related to the test time, water, and quicklime content. The XRD showed nearly similar X-ray diffraction peaks. The SEM analysis confirmed marked changes in the microstructure of the samples that explained the changes in electrical resistivity and subgrade reaction modulus responses. The test results show that the resistivity plate loading device efficiently assesses compacted quicklime’s stiffness and physical properties at ease and instantaneously.

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Section: Methodsmentioning

confidence: 99%

Experimental Evaluation of Stiffness Properties of a Quicklime-Stabilized Clay Subgrade Using a Resistivity Plate Loading Testing Device

Ackah

Yang

Feng

2023

Transportation Research Record: Journal of the Transportation R

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“…The durability of soil-lime mixtures is the maintenance of engineering properties above the minimum design values during the service life of the construction [25]. Various causes of reduced durability of soils chemically treated with lime-based materials include seasonal variations in moisture (wetting and drying cycles), acid rain, freeze-thaw cycles, calcium leaching, and carbonation of calcium hydroxide and cementitious compounds [30][31][32][33]. According to Xu, et al [32], carbonation is one of the key properties for evaluating the durability of lime-and cement-based materials.…”

Section: Introductionmentioning

confidence: 99%

Geotechnical Behavior of Soil-electric Arc Furnace Slag Mixtures Under Carbonation

RODRIGUES,

Silva,

Pitanga

et al. 2024

Preprint

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Although the treatment of soils with lime-based materials is used in many earthworks projects, there are only a few studies that deal with the quantification of their carbonation.The objective of this work was to investigate the influence of carbonation in mixtures between two samples of tropical soils and Electric Arc Furnace Slag (EAFS) in terms of Unconfined Compressive Strength (UCS), mini-CBR index, mini-CBR expansion, and Resilient Modulus (RM) properties. Four types of curing were used: (1) conventional sealed curing in a humid chamber; (2) conventional sealed curing in a humid chamber followed by unsealed curing with exposure to air; (3) conventional sealed curing in a humid chamber followed by unsealed curing in an accelerated carbonation chamber. In addition, tests were performed to determine the carbonation depth by spraying phenolphthalein, pH, scanning electron microscopy (SEM), and X-ray diffraction (XRD). It was found that the results of the soil-EAFS were better than those of the soil samples not stabilized for all the curing processes analyzed. In the curing processes (1), the formation of calcium aluminum silicate hydrate structures (CASH) was found to improve the mechanical behavior of soil-EAFS mixtures. The formation of calcium carbonate (CaCO3) was observed in curing processes (2) and (3), which significantly improved the mechanical properties. Thus, the carbonation process increases the strength and stiffness of the soil-EAFS mixtures, which guarantees the durability of these mixtures over the years.

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Carbonation in lime-stabilized clays: mechanism, effects, and future prospects

Padmaraj

Arnepalli

2023

Bull Eng Geol Environ

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Durability of Cementitious Phases in Lime Stabilization: A Critical Review

Cited by 8 publications

References 24 publications

Experimental Evaluation of Stiffness Properties of a Quicklime-Stabilized Clay Subgrade Using a Resistivity Plate Loading Testing Device

Experimental Evaluation of Stiffness Properties of a Quicklime-Stabilized Clay Subgrade Using a Resistivity Plate Loading Testing Device

Geotechnical Behavior of Soil-electric Arc Furnace Slag Mixtures Under Carbonation

Carbonation in lime-stabilized clays: mechanism, effects, and future prospects

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