Fatigue Performance of Double-Layered Asphalt Concrete Beams Reinforced with New Type of Geocomposites

Jaskuła, Piotr; Ryś, Dawid; Stienss, Marcin; Szydłowski, Cezary; Gołos, Michał; Kawalec, Jacek

doi:10.3390/ma14092190

Cited by 8 publications

(7 citation statements)

References 26 publications

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“…The use of the geosynthetic layer as a subgrade reinforcement under mining influences in flexible pavement construction has been widely described [1][2][3][4][5]. The application directly on top of the old asphalt layer under the overlay allows delay or prevents crack propagation between layers [6][7][8][9][10][11]. The increase in pavement fatigue resistance was proven.…”

Section: Introductionmentioning

confidence: 99%

“…The application below the subbase reduces the influence of horizontal unloosing strain and is the most effective solution [1,15] Thus, it improves the resistance of the entire pavement construction to the loss of the equilibrium state from mining subsidence [1][2][3]. With the proper type of geosynthetic, the stiffness and bearing capacity of the asphalt layers is increased; interlocking with asphalt concrete contributes to the restraining effect [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Relationship between deflection basin parameters and backcalculated pavement layer moduli

Kałuża,

Kotasinski

2024

Archives of Civil Engineering

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In the case analysed, a glass fibre mesh was applied under the asphalt layer during a rehabilitation treatment. Because only one lane was reinforced, the test section can be used to observe the influence of glass fibre mesh on the relationship between the selected deflection basin parameters (RoC, BLI, MLI, and LLI) and back-calculated pavement layer moduli. The FWD measures were used to determine the bowl of deflection indicators and to back-calculate the layer’s moduli. The values of DBP-s allowed confirmation of the technical condition of pavement construction. The first measures were carried out in 2019 and repeated in 2021; the results were then compared and analysed. Influence was observed on the relationship between the deflection basin and moduli, especially for the base course and subgrade. The reinforced lane showed a better coefficient of determination between DBPs and moduli in 2019, but in 2021 relationships were observed only for LLI and subgrade moduli. The unreinforced lane, however, showed the mentioned relationships in both 2019 and 2021. Because of a relatively small number of measurement points, the presented analyses and observations should be considered as preliminary. Presented results and relationships are another step into developing an alternative approach to determining the initial pavement moduli i.e. to use as a seed moduli.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Relationship between deflection basin parameters and backcalculated pavement layer moduli

Kałuża,

Kotasinski

2024

Archives of Civil Engineering

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“…The use of geogrids for reinforcement of asphalt layers within pavement structure is likely the most recent application of geosynthetics that started since early 1980s, when geogrids were used to mitigate re ective cracking and to prolong fatigue life [3]. Since then, numerous investigations involving geosynthetics have been carried out in both the laboratory [3][4][5][6][7][8][9] and the eld [10][11][12], concluding that they can successfully slow down re ective cracking propagation [13,14] and improve fatigue [9,[15][16][17] and rutting resistance [4,18], even though they may affect shear bond strength [4,11]. The bene cial effects of geogrids on the pavement structure have also been assessed through the life cycle cost analysis (LCCA) [4].…”

Section: Introductionmentioning

confidence: 99%

“…During recent years, many studies have been conducted to evaluate the impact of geogrids on pavement performance. Among the frequently utilized laboratory tests are: Three Point Bending Beam − 3PBB [11,22,23], 15,17,24], -ASTRA interface direct shear test [6,11] and Overlay Tester -OT [14,21]. The fact that some researchers had designed different types of testing con gurations such as the sheartorque fatigue test [25] and anti-re ective cracking system [13,26,27] further illustrates how crucial it is to examine the impact of grids on pavement performance.…”

Section: Introductionmentioning

confidence: 99%

Simplified Methodology for Fatigue Analysis of Reinforced Asphalt Systems

Orešković,

Bohuš,

Virgili

et al. 2023

Preprint

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Fatigue analysis has an imporant role in evaluation the durability and performance of ashalt pavements, especially when new or alternative materials are used. Numerous laboratory studies have investigated fatigue performance with aim to estimate field behavior as closer as possible. Therefore, there are currently many different testing methods and data analysis approaches that can be used. One of the most common laboratory test methods is four-point bending beam (4PBB) test, which results are usually analyzed using the so-called traditional approach (where 50% of stiffness reduction is considered as failure criterion) or the energy ratio (ER) approach. However, outcomes from previous studies have shown that these approaches may not be appropriate and reliable if geogrids are used as a reinforcement. As a possible solution, this study proposes a new Simplified Flex Point (SFP) approach that considers the flex point of the strain amplitude curve, measured during 4PBB fatigue tests, to calculate the number of cycles to failure. These three approaches were applied on four sets of double-layered asphalt samples: one unreinforced and three reinforced with geogrids of different strength (50, 100 and 200 kN). The impact of reinforcement on the fatigue life was evaluated by comparing the critical strain values (ε6) of reinforced and unreinforced sets through fatigue resistance improvement factor (FRIF). The research findings showed that the use of geogrids improves fatigue life when the SFP and ER approaches are applied and that the traditional approach might not always be appropriate for assessing the fatigue resistance of reinforced asphalt mixtures.

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“…However, although many studies have documented the effectiveness of geosynthetics so far, there is still little scientific literature on the use of geocomposites. The results available in literature are encouraging and suggest that geocomposites can effectively delay bottom-up, top-down and reflective cracking, as well as improve the rutting resistance, even though the performance is strongly affected by the interlayer bonding ensured by the geocomposite [ 17 , 18 , 19 , 20 , 21 , 22 ]. Nevertheless, it is not yet fully understood how the physical and mechanical properties of the geocomposite affect the performance of the reinforced system.…”

Section: Introductionmentioning

confidence: 99%

Influence of Geocomposite Properties on the Crack Propagation and Interlayer Bonding of Asphalt Pavements

et al. 2021

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The application of geocomposites as reinforcement in asphalt pavements is a promising solution for the maintenance/rehabilitation of existing pavements and for the construction of new pavements, whose effectiveness strongly depends on the physical and mechanical properties of the geocomposite. This study aims at assessing the influence of four different geocomposites, obtained by combining a reinforcing geosynthetic with a bituminous membrane, on the crack propagation and interlayer bonding of asphalt pavements. First, a laboratory investigation was carried out on double-layered asphalt specimens. The crack propagation resistance under static and dynamic loads was investigated through three-point bending tests (carried out on specimens with and without notch) and reflective cracking tests respectively, whereas the interlayer shear strength was evaluated through Leutner tests. Then, a trial section was constructed along an Italian motorway and a Falling Weight Deflectometer (FWD) testing campaign was carried out. The laboratory investigation highlighted that—as compared to the unreinforced system—the geocomposites increased the crack propagation energy in the layer above the reinforcement from five to ten times, indicating that they can significantly extend the service life of the pavement by delaying bottom-up and reflective cracking. However, they also worsened the interlayer bonding between the asphalt layers (de-bonding effect). The field investigation indicated that all geocomposites decreased the stiffness of the asphalt layers with respect to the unreinforced pavement as a consequence of the de-bonding effect, thus corroborating the laboratory results. Based on the results obtained, it is desirable that the geocomposite possess a high energy dissipation capability and an upper coating ensuring good adhesion between the asphalt layers. The monitoring of the existing trial section in the future will provide useful data on the long-term field performance of reinforced pavements subjected to actual motorway traffic.

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Fatigue Performance of Double-Layered Asphalt Concrete Beams Reinforced with New Type of Geocomposites

Cited by 8 publications

References 26 publications

Relationship between deflection basin parameters and backcalculated pavement layer moduli

Relationship between deflection basin parameters and backcalculated pavement layer moduli

Simplified Methodology for Fatigue Analysis of Reinforced Asphalt Systems

Influence of Geocomposite Properties on the Crack Propagation and Interlayer Bonding of Asphalt Pavements

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