Dhanalakshmi Padmaraj

Indian Institute of Technology Madras | IIT Madras · Department of Civil Engineering

Carbonation is an inevitable reaction during the construction and curing stages of lime-stabilized earthworks. Both bench-scale and field studies on lime stabilization recognize carbonation as a deleterious reaction due to the consumption of lime, which otherwise participates in pozzolanic reactions. Besides lime paucity, exposure of stabilized cla...

The long-term performance of lime-stabilised earthworks is a major concern for the sustainability and durability of infrastructure. The manuscript presents a comprehensive investigation into the impact of carbonation and leaching on lime-stabilised soil by focusing on the mechanical, chemical, and microstructure changes. The study employed accelera...

This study describes the nondestructive testing and evaluation of different clay–lime composites by real-time impedance spectroscopy (IS) monitoring of lime hydration and cementation mechanisms. The experimental investigations were carried out on two different clays, white clay (with predominantly kaolinite mineralogy) and brown clay (with predomin...

ime is a popularly adopted binder for improving the mechanical properties and controlling the volume change behavior of problematic clayey soils. However, lime treatment offers certain limitations due to the durability issues arising from varying physico-chemical conditions exacerbated by climatic stresses or clay mineralogy. Lime-treated soils ric...

The performance of the lime-stabilized layers exposed to water is uncertain owing to moisture intrusion and leaching of cementitious binders. The present study aims to assess the effect of water percolation on calcium leachability and microstructure alterations in lime-treated soils. The leachate is analyzed using an atomic absorption spectrophotom...

The carbonation of lime-treated soils that occurs during the short-term and long-term curing is not sufficiently explored in the domain of lime stabilization. The present study investigates the carbonation mechanism in lime-treated silty clay treated with two lime contents (4%, 8%) subjected to different curing periods (7, 90, 180, and 365 days). T...

Soil–lime interactions involve concomitant short-term and long-term alterations of the fine-grained soil resulting in the formation of a workable material bonded by various pozzolanic compounds. These pozzolanic compounds being cementitious in nature are expected to hold the soil particles together and bring long-term strength and stability to the...

The effect of Ground Granulated Blastfurnace Slag (GGBS)-lime mixtures in the stabilisation of soft soil is investigated in the study. GGBS being an industrial byproduct requires an alkali activator for enhancing its pozzolanic reactions with the soil. Studies have shown that this binder combination, in comparison to other conventional binders is e...

Chemical stabilisation is a widely employed technique for improving the geotechnical properties of soft soils. Various ground improvement methods employing lime and cement are quite common but they impose a huge threat to the environment during their production by the emission of excess CO2 to the atmosphere. Since then, the usage of waste based bi...