Pavement Subgrade Stabilization with Lime and Cellular Confinement System

Akpınar, Muhammet Vefa; Pancar, Erhan Burak; Şengül, Eren; Aslan, Hakan

doi:10.7250/bjrbe.2018-13.402

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…For long-term operation, frozen soil roadbed should be kept stable and durable. Therefore, the design and construction of frozen soil roadbed must fully consider the natural conditions, as well as the feasibility of construction, operation, and maintenance [7][8][9][10][11]. The strength and stability of roadbed should be analyzed in the light of uncertain factors like temperature, stress, and material complexity.…”

Section: Introductionmentioning

confidence: 99%

Temperature Field Distribution and Thermal Stability of Roadbed in Permafrost Regions

Yao¹,

Shi²,

Zu³

2021

IJHT

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Many highways and railways in western China are built on permafrost roadbed. Frost heave and thaw settlement might cause diseases to frozen soil roadbed, such as deformation and cracking. For long-term operation, frozen soil roadbed should be kept stable and durable. Therefore, this paper analyzes the distribution law of temperature field of roadbed in permafrost regions, under the effect of thermal stability. Based on the thermodynamic properties of permafrost, the authors analyzed the influence of engineering geological factors, roadbed structural factors, and natural environmental factors on the thermal stability of frozen soil roadbed. Next, the antifreeze mechanism of frozen soil roadbed was described, together with the calculation methods for the relevant parameters. Afterwards, the temperature field of the roadbed with low thermal conductivity insulation material was analyzed by two methods, namely, steady-state thermal analysis and transient thermal analysis, and the solving process of roadbed temperature field was explained in details. The proposed analysis method and solving algorithm were proved valid through experiments. The research results provide a reference for the reasonable design of frozen soil roadbed.

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Section: Introductionmentioning

confidence: 99%

Temperature Field Distribution and Thermal Stability of Roadbed in Permafrost Regions

Yao¹,

Shi²,

Zu³

2021

IJHT

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“…For instance, Rabab'ah et al [6] investigated cases of subgrade and pavement diseases in frozen soil areas of Alaska, and attributed the longitudinal cracks of subgrade and those of pavement to frost heave and thaw settlement, respectively. Chinese researchers have studied subgrade and pavement diseases on the Qinghai-Tibet Highway, namely, uneven deformation, subsidence, and horizontal/vertical cracks [7][8][9]. Tavakol et al [10] summarized and analyzed the disease features of highway subgrade and pavement, and ascribed the diseases to objective factors like harsh weather and melting of frozen soil.…”

Section: Introductionmentioning

confidence: 99%

An Evaluation Model of Subgrade Stability Based on Artificial Neural Network

Yao¹,

Shi²,

Zu³

2020

IJSSE

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In special areas, the highways may suffer from such diseases as deformation, cracking, subsidence, and potholes, making highway maintenance a complex and difficult task. To obtain the law-term deformation law of the subgrade and accurately evaluate the subgrade and pavement stability, this paper establishes a subgrade stability evaluation model based on artificial neural network (ANN). Firstly, the law of unstable subgrade deformation in highways of special areas was derived by analyzing the influencing factors on subgrade stability, namely, temperature field, moisture field, and traffic load. Next, the correlations between input and output characteristic quantities were extracted, and used to construct the nonredundant mapping function between influencing factors of subgrade unstable deformation and the levels of subgrade stability. Finally, a fuzzy neural network (FNN) was constructed based on Takagi-Sugeno model, realizing the evaluation of subgrade stability. The proposed model was proved effective and accurate through experiments.

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Enhancing Sustainable Road Construction: Evaluation of the Mechanical and Durability Properties of Stabilized Earth-Based Pavement Materials

Tarhan,

Kabakuş

2024

Sustainability

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The materials traditionally used in the construction of flexible and rigid pavements in modern road infrastructure present challenges in achieving sustainable development goals. Advances in technology have introduced the use of different pavement material mixes, leading to the introduction of earth-based alternatives. These materials are environmentally friendly, cost-effective, recyclable, and offer excellent insulation properties. Stabilization of earth-based materials improves their mechanical properties, reducing road construction costs and increasing durability. The present study investigates the mechanical and durability properties of earth-based materials stabilized with various additives, including cement, lime, polymer, and biopolymer, over 28 and 56 days. Fresh properties are assessed using unit volume weight, flow table, air content, and fall cone tests, while hardened properties are assessed using flexural strength, compressive strength, and water absorption. Microstructural analysis is carried out using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The cement-stabilized samples show improved strength and durability, with the 5% cement group showing a 67% increase in compressive strength over the control group and the 10% cement group showing over 200% higher compressive strength. These results suggest that stabilized earth-based materials could provide a cost-effective and sustainable alternative to conventional pavements for low-traffic roads.

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Pavement Subgrade Stabilization with Lime and Cellular Confinement System

Cited by 3 publications

References 15 publications

Temperature Field Distribution and Thermal Stability of Roadbed in Permafrost Regions

Temperature Field Distribution and Thermal Stability of Roadbed in Permafrost Regions

An Evaluation Model of Subgrade Stability Based on Artificial Neural Network

Enhancing Sustainable Road Construction: Evaluation of the Mechanical and Durability Properties of Stabilized Earth-Based Pavement Materials

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