Utilization of waste materials in the stabilization of expansive pavement subgrade: An extensive review

Tanyıldızı, Muhammed; Uz, Volkan Emre; Gökalp, İslam

doi:10.1016/j.conbuildmat.2023.132435

Cited by 13 publications

(2 citation statements)

References 222 publications

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“…Moreover, the addition of EDW and AEFA reduced the clay size fraction of the soils due to flocculation of clay particles through cementation. Therefore, EDW and AEFA treatment made the soil more granular [20,[31][32][33]. Additionally, decreasing PI increased the workability of the soils.…”

Section: Atterberg Limit Testsmentioning

confidence: 99%

Utilization of Earthquake Demolition Wastes and Afşin–Elbistan Fly Ash for Soil Improvement after the Kahramanmaraş Earthquake (6 February 2023)

Cinar

2024

Sustainability

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Türkiye is surrounded by active faults that have the potential to produce big earthquakes. Recently, one of these faults has become active. Two earthquakes of magnitude 7.7 and 7.6 occurred 9 h apart on 6 February 2023 in Kahramanmaraş. It is reported that 150 million tons of earthquake demolition waste (EDW) is estimated to be produced as a result of those natural hazards. This waste poses a serious risk to both the environment and human health. Its use in geotechnical applications will provide serious environmental benefits. In this study, Afşin–Elbistan fly ash (AEFA) and EDW were used to stabilize weak clayey soils in different proportions. Samples were prepared by separately adding 5, 10, 15, and 20% AEFA and EDW to high-plasticity clay. The AEFA used in this study was used because the production of AEFA is too high, and it is not used in concrete production because it does not comply with the standards and causes serious environmental problems for the region. The Atterberg limit, standard compaction, unconfined compression strength (UCS), triaxial, and California bearing ratio (CBR) tests were performed on soil samples, and samples were prepared from soil mixtures with various proportions of AEFA and EDW added. In addition, clay mixtures were prepared with EDW by keeping the AEFA ratio constant at 15% and their effects were also investigated. According to Atterberg test results, the natural soil class was determined as high-plasticity clay, the soil class of the mixtures created by adding EDW and AEFA was determined as low-plasticity clay, and all ternary mixtures were determined as low-plasticity silt. In addition, the maximum dry density increased for all mixtures, while the optimum water content decreased. A significant increase was observed in UCS test results, especially in ternary mixtures. While cohesion increased in AEFA mixtures, it decreased in ternary mixtures as the EDW ratio increased. It was observed that the internal friction angle increased in all mixtures. According to CBR test results, it was determined that the binary AEFA mixture ratio was 20%, the binary EDW mixture ratio was 10% and above, and all ratios of the ternary AEFA + EDW mixtures could be used as road sub-base material. After the major earthquake disaster, the use of EDW is of great importance for the environment. As a result, AEFA and EDW were found to enhance the geotechnical properties of clay.

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Section: Atterberg Limit Testsmentioning

confidence: 99%

Utilization of Earthquake Demolition Wastes and Afşin–Elbistan Fly Ash for Soil Improvement after the Kahramanmaraş Earthquake (6 February 2023)

Cinar

2024

Sustainability

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“…Expansive soil, as a typical special soil, swells with water and shrinks without water. Thus, the soil is prone to loosening and cracking [11][12][13]. This case is especially true in seasonally frozen regions, where soils undergo periodic freeze-thaw cycles.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Structural Strength of Expansive Soil in a Seasonally Frozen Region

Sun,

Song,

Niu

et al. 2024

Buildings

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The existence of structural strength in undisturbed soil results in its distinct characteristics compared to remolded soil. Under the influence of freeze–thaw cycles, this difference may easily cause geotechnical disasters in cold regions. This study aimed to analyze and discuss the expression degree and influencing factors of the structural strength of expansive soil. The unconfined compressive strength (UCS) test, high-pressure consolidation test, and microscopic test were performed on expansive soil retrieved from a seasonally frozen region. Moreover, sensitivity parameters, including stress sensitivity (St.qu, St.σk) and strain sensitivity (St.ɛu, St.Cc), were applied to explore the expression degree and influencing factors of structural strength in a seasonally frozen region. The results reveal that the undisturbed samples have better structural connection and particle arrangement than the remolded samples. However, the primary fractures have a certain degrading effect on the strength of the undisturbed soil as influenced by a seasonally frozen region. With the increase in water content and the decrease in density, the expression degree of the structural strength in terms of compressive strength and the ability to resist deformation enhances under the unconfined condition. By contrast, the expression degree increases in strength and decreases in ability under the confined condition. Furthermore, the effect mechanisms of the basic property, particle composition, structural linkage, lateral confinement, and historical role on the structural expression were analyzed.

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Experimental Evaluation of Nano-material and Biopolymer Additives on Expansive Subgrade Soil for Pavement Applications

Sanniyah,

Sihombing,

Mase

et al. 2024

Transp. Infrastruct. Geotech.

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Utilization of waste materials in the stabilization of expansive pavement subgrade: An extensive review

Cited by 13 publications

References 222 publications

Utilization of Earthquake Demolition Wastes and Afşin–Elbistan Fly Ash for Soil Improvement after the Kahramanmaraş Earthquake (6 February 2023)

Utilization of Earthquake Demolition Wastes and Afşin–Elbistan Fly Ash for Soil Improvement after the Kahramanmaraş Earthquake (6 February 2023)

Investigation of the Structural Strength of Expansive Soil in a Seasonally Frozen Region

Experimental Evaluation of Nano-material and Biopolymer Additives on Expansive Subgrade Soil for Pavement Applications

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