A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A study of the performance of lignosulfonate-treated high plastic clay under static and cyclic loading
Abstract Traditional stabilizers such as cement and gypsum have been reported to increase the strength; however, make the soil excessively brittle which is undesirable in case of structures subjected to cyclic loading. Therefore, an alternative material that can improve the strength and durability without altering the ductility of soil specimens is required. In the present study, a lignin-based chemical, lignosulfonate, has been used to stabilize high plastic clay, and its performance has been evaluated under static and cyclic loading for different parameters. Test results indicated a significant increase in the unconfined compressive strength under static loading and reduction in axial strains and rate of axial strain development under cyclic loading for stabilized soil specimens. The reductions in rate of axial strain development for stabilized specimens indicate a slow rutting of subgrade soil and hence increase in the longevity of traffic infrastructures. Based on the variation of unconfined compressive strength of treated soil with lignosulfonate contents and curing time, a novel three-parameter compressive strength model was developed as a function of lignosulfonate to water content ratio and time. Also, a power model was used to illustrate the rate of strain development for both treated and untreated specimens under cyclic loading, and model constants were evaluated at different confining pressures.
A study of the performance of lignosulfonate-treated high plastic clay under static and cyclic loading
Abstract Traditional stabilizers such as cement and gypsum have been reported to increase the strength; however, make the soil excessively brittle which is undesirable in case of structures subjected to cyclic loading. Therefore, an alternative material that can improve the strength and durability without altering the ductility of soil specimens is required. In the present study, a lignin-based chemical, lignosulfonate, has been used to stabilize high plastic clay, and its performance has been evaluated under static and cyclic loading for different parameters. Test results indicated a significant increase in the unconfined compressive strength under static loading and reduction in axial strains and rate of axial strain development under cyclic loading for stabilized soil specimens. The reductions in rate of axial strain development for stabilized specimens indicate a slow rutting of subgrade soil and hence increase in the longevity of traffic infrastructures. Based on the variation of unconfined compressive strength of treated soil with lignosulfonate contents and curing time, a novel three-parameter compressive strength model was developed as a function of lignosulfonate to water content ratio and time. Also, a power model was used to illustrate the rate of strain development for both treated and untreated specimens under cyclic loading, and model constants were evaluated at different confining pressures.
A study of the performance of lignosulfonate-treated high plastic clay under static and cyclic loading
Singh, Avinash Kumar (author) / Sahoo, Jagdish Prasad (author)
2021
Article (Journal)
Electronic Resource
English
BKL:
56.00$jBauwesen: Allgemeines
/
38.58
Geomechanik
/
38.58$jGeomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
56.00
Bauwesen: Allgemeines
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB18
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