Study on Dynamic Modulus and Damping Characteristics of Modified Expanded Polystyrene Lightweight Soil under Cyclic Load

Tao, Huaqiang; Zheng, Wenqian; Zhou, Xuhui; Zhang, Lin; Li, Chun‐Zhu; Yu, Yanfei; Jiang, Ping

doi:10.3390/polym15081865

Cited by 3 publications

(1 citation statement)

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“…The mathematical–statistical method of least squares was used to evaluate the data, the aim of which is to approximate pairs of measured data. This knowledge was the basis for carrying out the experimental part of this work as well as for the evaluation of the results [ 32 , 33 , 34 , 35 ].…”

Section: Discussionmentioning

confidence: 99%

Identification of Hybrid Polymer Material STERED and Basic Material Properties Used in Road Substructures or Pavements

Papán,

Decký,

Ďugel

et al. 2024

Polymers

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Modern road construction uses a large number of polymer-based materials. Material composition depends on their roles. Among the most important functions of road body materials is to transfer all loads safely to the subgrade. A thorough understanding of material properties in various climates is crucial for this purpose. In the automotive industry, polymer residues from recycling can be used to make innovative materials, such as STERED, a hybrid polymer composite. Drawing on the porous nature of this material, this paper investigates its mechanical behavior. For road construction, the compressive properties of the material are most important. The paper presents the results of a detailed analysis and experimental research of the STERED material from in-lab tests. Successful research will lead to the inclusion of the material in road body compositions with excellent retention properties, vibration damping, and potential in circular economy.

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Section: Discussionmentioning

confidence: 99%

Identification of Hybrid Polymer Material STERED and Basic Material Properties Used in Road Substructures or Pavements

Papán,

Decký,

Ďugel

et al. 2024

Polymers

View full text Add to dashboard Cite

show abstract

A review on innovative approaches to expansive soil stabilization: Focussing on EPS beads, sand, and jute

Utkarsh,

Jain

2024

Science and Engineering of Composite Materials

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Expansive soils pose major geotechnical challenges due to significant volume changes. This research investigates an innovative stabilization approach using sand, expanded polystyrene (EPS) beads, and jute fibres to enhance the properties of expansive soil. The purpose is to utilize the unique characteristics of these admixtures to restrict swelling potential and improve strength and load-bearing capacity. Experimental testing quantified improvements through parameters like unconfined compressive strength (UCS), swelling pressure, California bearing ratio (CBR), compaction characteristics, and Atterberg limits. Soil samples were prepared with individual and combined admixtures at optimum proportions and extensively tested after proper curing. Quantitative results indicated that including sand, EPS beads, and jute fibres increased the soil’s UCS by 41, 29, and 23%, respectively. The swelling pressure, on the other hand, decreased by 14, 18, and 11%, respectively. Maximum improvements were achieved with combined admixtures: UCS increased by 65%, swelling pressure reduced by 23%, and CBR improved from 5 to 6.5%. Regression analysis indicated a strong correlation (R 2 = 0.96) between admixture proportions and resultant UCS. The key achievements are effective swelling control, a marked increase in shear strength parameters, and synergy between admixtures in enhancing expansive soil properties. This sustainable stabilization method using industrial by-products presents a promising solution for constructing stable civil structures even in problematic expansive soil regions.

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Research on the Mechanical Properties of EPS Lightweight Soil Mixed with Fly Ash

Mei,

Huang,

Xiang

2024

Polymers

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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. We applied EPS bead–lightweight soil in this project, replacing partial cement with fly ash to reduce construction costs. EPS beads were used as a lightweight material and cement and fly ash as curing agents in the raw soil were used to make EPS lightweight soil mixed with fly ash. The EPS bead proportions were 0.5%, 1%, 1.5%, and 2%; the total curing agent contents were 10%, 15%, 20%, and 25%; and the proportions of fly ash replacing cement were 0%, 15%, 30%, 45%, and 60%, respectively. Unconfined compressive strength (UCS) and scanning electron microscopy (SEM) tests were conducted. The results showed that the EPS content, total curing agent content, and proportion of fly ash replacing cement had a significant impact on the UCS of the lightweight soil. This decreased with an increase in EPS content and decrease in total curing agent content and decreased with increased proportions of fly ash replacing cement. When the proportion of fly ash replacing cement was not too high, the strength of the lightweight soil decreased less, and its performance still met engineering needs. At the same time, the soil can also consume fly ash and reduce environmental pollution. EPS lightweight soil mixed with fly ash still has advantages, and it is recommended to keep the proportion of fly ash replacing cement less than 30%. The failure patterns for lightweight soil mainly include splitting failure, oblique shear failure, and bulging failure, which are related to the material mix ratio.

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Study on Dynamic Modulus and Damping Characteristics of Modified Expanded Polystyrene Lightweight Soil under Cyclic Load

Cited by 3 publications

References 50 publications

Identification of Hybrid Polymer Material STERED and Basic Material Properties Used in Road Substructures or Pavements

Identification of Hybrid Polymer Material STERED and Basic Material Properties Used in Road Substructures or Pavements

A review on innovative approaches to expansive soil stabilization: Focussing on EPS beads, sand, and jute

Research on the Mechanical Properties of EPS Lightweight Soil Mixed with Fly Ash

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