Stiffness and Fatigue of Asphalt Mixtures for Pavement Construction

Šrámek, Juraj

doi:10.2478/sjce-2018-0010

Cited by 10 publications

(6 citation statements)

References 8 publications

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“…The resulting shape of the deflection curve and the achieved parameters are shown in Figure 4 and Table 2. More detailed results for fatigue tests can be found in [51,52]. Where ε 6 is strain level required for 1 million cycles fatigue life; b is slope parameter of fatigue line, B is falling gradient of the fatigue line, B = −1/b and A 0 is value of intercept of samples related strain (log ε) and samples loading cycles count (log N).…”

Section: Pavementsmentioning

confidence: 99%

Road Asset Value Calculation Based on Asset Performance, Community Benefits and Technical Condition

2022

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The article presents a comprehensive asset management method. Here presented method aims to bridge the economic approach to asset management with the technical approach to road infrastructure life cycle, namely its resilience and performance. The presented asset value calculation methods are based both on socio-economic viewpoints on community benefits of an asset, as well as the technical aspect of the technical condition and residual life calculations of a road infrastructure. In contrast to common road asset management methods, asset value is not arbitrarily annually depreciated, instead, it is exactly calculated based on pavement performance models, pavement construction fatigue and paving material properties. Road asset value calculation is based on the asset performance and the technical condition of a pavement structure and other objects. Road asset performance is defined in terms of society and road user demands put on road category and its qualitative standard. Road asset technical condition is evaluated by the procurement cost calculation and condition deterioration. Value of condition deterioration is defined by residual life expectancy based on fatigue and construction reliability of the road infrastructure. The cross-asset allocation method is used for the creation of programs for claim and allocation of funding. The aim was to increase the credibility of the road administrators with the public as they present their decisions based on road asset management, and to increase the level of acceptance for practitioners.

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Section: Pavementsmentioning

confidence: 99%

Road Asset Value Calculation Based on Asset Performance, Community Benefits and Technical Condition

2022

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“…This paper presents the deterioration of the pavement performance index-the rut depth (RUT). International roughness index (IRI), bearing capacity, and fatigue of selected asphalt layers and their evaluation were previously presented in [22][23][24]. The RUT parameter is selected as a critical deterioration parameter for pavements with unmodified asphalt concrete surfacing.…”

Section: Deterioration Equations Derived From Measurements On the Apt Facilitymentioning

confidence: 99%

Economic Impact Analysis of the Application of Different Pavement Performance Models on First-Class Roads with Selected Repair Technology

et al. 2021

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Mathematical expression of the deterioration of individual pavement parameters is, from the point of optimal repair and maintenance strategy decision-making process, an important part of the application of any pavement management system (PMS). The reliability of individual PMS depends on the quality of the inputs and the reliability of its internal sub-systems; thus, deterioration equations derived from high-quality input data play pivotal roles in a system for the prediction of the pavement life cycle. This paper describes the application of pavement performance models within pavement life cycle analysis (LCA) with the use of the integrated system of economic evaluation (ISEH), which is a calculation tool used for first-class roads with a standardized pavement composition of asphalt binders, where changes in operational capability parameters are modeled using individual model simulations. The simulations presented in this paper demonstrate changes in main economic indicators (net present value and internal rate of return) on two different pavement performance models. Both simulations share the same input parameters (traffic intensity, construction intervention, maintenance costs, discount rate) but differ in deterioration evaluation, all of which were applied to each model (a total of five models).

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“…Based on these factors, the pavement may exhibit various behaviours. The characteristics of the asphalt binder significantly affect the mechanical properties of an asphalt mixture [4]. Altering the percentage of fine aggregate in asphaltic concrete mixes substantially impacts the rheological qualities of the resulting materials [5].…”

Section: Introductionmentioning

confidence: 99%

“…The Boltzmann theory of linear viscoelastic materials, which considers the consequences of repeated stress, describes the behaviour of materials used in road construction over short-or long-term periods. Most materials used in road construction fall into the category of linear viscoelastic matter, which is mechanically modelled in the Boltzmann theory by a system of springs and dampers arranged either in series or parallel, capable of experiencing reversible or variable permanent deformations [4]. The percentage of air voids is high when initially constructed, which is why deformation due to applied load and compaction can be severe [8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of viscoelastic behaviour in asphalt pavement through four-point beam bending tests

Jamal,

Khan,

Khan

et al. 2024

Bud-Arch

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This study, conducted in accordance with ASTM T321-14 standards, offers crucial insights into the behaviour of asphalt materials subjected to cyclic loading. For proper maintenance and pavement design, it is essential to understand the material response under different loading conditions. This study focuses on the four-point beam bending test to investigate the viscoelastic behaviour of asphalt pavement. The four-point beam bending test is a useful method for determining the material's ability to withstand cyclic loading and deformation, which the material experiences during field traffic conditions. The experimental setup involves subjecting asphalt samples to cyclic loading using a four-point bending apparatus. The imposed load causes the specimen to experience bending strains, representing the actual loading conditions that pavements endure. The data gathered during testing include stress, strain, and deformation properties under various loading conditions. The stress-strain response demonstrates the material's resilience to fatigue, with a gradual decrease in stiffness beyond 10,300 cycles. Fatigue failure criteria include a 50% reduction in initial stiffness for strain-controlled fatigue tests and cracking in stress-controlled tests. The dynamic modulus in a compressive-type, repeated load test follows a three-phase pattern, highlighting the impact of temperature and binder characterization methods on sample performance. The results provide information about the material's resilience to rutting and fatigue cracking, the most significant distresses indicated in asphalt pavements. The findings from this study contribute to an in-depth understanding of the viscoelastic behaviour of asphalt pavement and can aid in the development of improved design guidelines and maintenance strategies characterizing the material response to cyclic loading. Engineers and researchers can make better decisions on the durability and performance of asphalt pavements, resulting in more cost-effective and sustainable road infrastructure.

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Stiffness and Fatigue of Asphalt Mixtures for Pavement Construction

Cited by 10 publications

References 8 publications

Road Asset Value Calculation Based on Asset Performance, Community Benefits and Technical Condition

Road Asset Value Calculation Based on Asset Performance, Community Benefits and Technical Condition

Economic Impact Analysis of the Application of Different Pavement Performance Models on First-Class Roads with Selected Repair Technology

Analysis of viscoelastic behaviour in asphalt pavement through four-point beam bending tests

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