Graphene stabilized loess: Mechanical properties, microstructural evolution and life cycle assessment

Yuan, Kangze; Li, Qingxiang; Ni, Wei; Zhao, Le; Wang, Haiman

doi:10.1016/j.jclepro.2023.136081

Cited by 13 publications

(3 citation statements)

References 53 publications

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“…Further addition of ESA in kaolinite clay-SF mix leads to a reduction in the UCS, while additional L in kaolinite clay-SF mix results in a significant increment in the UCS. Similar observations were made by Türköz et al [23], Phanikumar et al [24], and Yuan et al [25]. The findings indicate that the application of SF-ESA-L resulted in a substantial increase in UCS, with strength improvement reaching up to 81.03% (69.344 kN/m²).…”

Section: Unconfined Compression Testsupporting

confidence: 87%

Stabilization of Expansive Soil using Silica Fume and Lime

Zaini,

Hasan

2024

Constr.

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Structures built on soft clays frequently encounter stability and settlement issues owing to the high compressibility, low shear strength, and poor permeability of such clay types. These characteristics often result in bearing capacity failure and excessive settlement, posing significant challenges to construction projects. Therefore, the study investigates the strength enhancement of expansive clay soil with the inclusion of various percentages and combinations of silica fume (SF) and lime (L). Hence, the mechanical characteristics of various mix ratios of SF and L are examined via the standard Proctor, and unconfined compressive strength (UCS). The samples were treated for 1, 7, 14 and 30 days and examined under the UCS tests. The experimental results show that the strength of the expansive clay significantly rises with the inclusion of SF and L at dissimilar mix ratios and curing days. The mixture of SF and L resulted in a significant strength increment of the kaolinite clay soil up to 80.22%.

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Section: Unconfined Compression Testsupporting

confidence: 87%

Stabilization of Expansive Soil using Silica Fume and Lime

Zaini,

Hasan

2024

Constr.

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“…The changing in curve of different kaolin-lime-POFA mixtures shows that the addition of POFA content with a high silica content has changed the arrangement of the sample particles causing a change in the specific area of the sample. This results in more water being needed to trigger the stabilization process by causing a chemical reaction between the small particles, thus resulted in increasing value of OMC [30][31]. As more water is added to the mixture, the MDD value of the mixture becomes lower [32][33][34].…”

Section: Compaction Behaviourmentioning

confidence: 99%

Strength of Kaolinitic Clay Soil Stabilized with Lime and Palm Oil Fuel Ash

Zaini,

Hasan,

Md Jariman

2024

Constr.

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The use of palm oil fuel ash (POFA) mixed with lime as a catalyst in soil stabilization can significantly improve the stability of problematic soils and improve their engineering properties. Problematic soils can obstruct the construction process due to its low strength and low bearing capacity. In this study, various laboratory tests were carried out to determine the engineering properties of the soil’s mixture which includes Atterberg limit, particle size distribution, compaction, and unconfined compression test. 4%, 8% and 12% POFA were mixed with 6% hydrated lime to stabilized the kaolinitic clay soil at different curing days (1, 7, 14, and 30 days). Compared to untreated kaolin, the addition of POFA plus lime resulted in higher undrained shear strength. The maximum undrained shear strength (USS) is 32.68kN/m2, which was obtained on the 30th day of curing with the optimal mixture of stabilized kaolin which is kaolin mixed 6% of lime and 12% of POFA. The unconfined compressive strength increased by 185.04% compared to the unconfined compressive strength of untreated kaolinitic clay with a value of 65.36 kN/m2. This proves that kaolin stabilized with lime and POFA can increase the strength parameters of clay, thus reducing construction costs for soil stabilization and reducing environmental issues.

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“…In construction, graphene oxide can address the shortcomings of cement-based materials, such as brittleness and high permeability, and enhance mechanical strength up to 120 GPa (Xu, 2018). Moreover, graphene oxide can stabilize silty soil and soft clay for building foundations, making it a promising material for construction projects (Fattah et al, 2021;Mahmood et al, 2021;Yuan et al, 2023) Nevertheless, graphene, like other carbon-based nanomaterials, is water-insoluble, posing challenges for even distribution in cement mixes (Suo et al, 2022;Zhao et al, 2020a). In contrast, graphene oxide (GO), composed of single-layer sp2-hybridized carbon atoms with oxygencontaining groups, exhibits good hydrophilicity and cost-effectiveness, making it a popular choice for concrete mixes (Krystek et al, 2021;Aliyev et al, 2019;Suo et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide in Construction: A Comprehensive Review on the Prospects, Challenges, and Sustainable Cement Reinforcement

Ciawi,

Supariarta,

Hidayati

et al. 2023

MKTS

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The growing demand for cement production to support the rapid growth of the construction industry has resulted in a significant contribution to global carbon emissions due to the high energy requirements of cement production. Addressing this issue requires the development of eco-friendly cement modifiers/additives. Graphene, known for its exceptional properties, has emerged as a versatile material in various domains, including construction. Its incorporation into cement has exhibited promising prospects, surpassing geopolymer performance and enhancing cement quality. Nevertheless, challenges persist, such as inadequate dispersion in concrete mixtures and quality control issues during large-scale production. Harnessing the potential of graphene oxide can revolutionize cement performance and contribute to a more sustainable construction industry. Addressing dispersion challenges and ensuring successful large-scale production are pivotal steps towards realizing these benefits. This comprehensive review investigates the potential of graphene oxide in the construction sector, specifically focusing on its capacity to reinforce cementitious composites and highlighting the associated implementation challenges, paving the way for more sustainable cement production with a touch of scientific excellence.

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Graphene stabilized loess: Mechanical properties, microstructural evolution and life cycle assessment

Cited by 13 publications

References 53 publications

Stabilization of Expansive Soil using Silica Fume and Lime

Stabilization of Expansive Soil using Silica Fume and Lime

Strength of Kaolinitic Clay Soil Stabilized with Lime and Palm Oil Fuel Ash

Graphene Oxide in Construction: A Comprehensive Review on the Prospects, Challenges, and Sustainable Cement Reinforcement

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