Stabilization of Soft Soil With Granulated Blast Furnace Slag and Fly Ash

Barsagade, D. M.; Patil, Krishna

doi:10.29070/15/56857

Cited by 1 publication

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“…Studies on the mass incorporation of slag into EPS lightweight soils are rare, and the most commonly used binding agent is cement, but the production of cement causes serious environmental problems and consumes a large amount of energy in the production process [ 14 ]. Slag, as an industrial byproduct from a wide range of sources, is relatively inexpensive, and the use of slag instead of cement as a binding agent can both reduce the cost of foundation treatment and minimize the impact on the environment [ 15 , 16 ]. YANG et al [ 17 ] analyzed the composition and properties of slag and studied the application of slag in the fields of building materials, sewage treatment, agriculture and resource utilization.…”

Section: Introductionmentioning

confidence: 99%

Research on the mechanical properties of EPS lightweight soil mixed with slag

Mei,

Xiang,

Huang

2024

PLoS ONE

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Expanded polystyrene (EPS) bead lightweight soil composites are a new type of artificial geotechnical material with low density and high strength characteristics that can be widely used in engineering projects. To promote the wide application of EPS bead lightweight soil in engineering, when slag is used to replace part of the cement as a binding agent, it can better improve the effect of soil and reduce engineering costs. The mechanical properties of EPS lightweight soil mixed with slag were analyzed by conducting an unconfined compressive strength (UCS) test and triaxial test on lightweight soil with different EPS bead contents and slag contents. The particle sizes of the EPS beads are 1~3 mm, the EPS contents are 1%, 2%, 3%, and 4%, and the slag-cement composite binding agents are 10%, 15%, 20% and 25%. The results show that the UCS decreases significantly with increasing EPS bead content at different EPS bead contents and slag contents; the UCS of the specimen with 30% slag content is the largest; and the UCS of lightweight soil without slag is comparable to that of lightweight soil with a slag content of approximately 60%. The peak stress in triaxial increases with increasing confining pressure, and the modulus of deformation decreases linearly with increasing EPS bead content. the slag-cement composite binding agent has a significantly better reinforcing effect than single mixed cement. The stress‒strain curves of EPS lightweight soil mixed with slag exhibits hardening and softening characteristics. EPS bead content and slag content determine the stress‒strain characteristics of the EPS lightweight soil mixed with slag. The macromechanical properties based on the microscopic mechanism of the EPS lightweight soil mixed with slag shows that different slag contents affect the failure pattern of EPS lightweight soil mixed with slag. The research results can provide a reference for engineering design and application.

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Section: Introductionmentioning

confidence: 99%