Comparison of low-temperature cracks intensity on pavements with high modulus asphalt concrete and conventional asphalt concrete bases

Ryś, Dawid; Judycki, Józef; Pszczoła, Marek; Jaczewski, Mariusz; Mejłun, Łukasz

doi:10.1016/j.conbuildmat.2017.04.179

Cited by 60 publications

(26 citation statements)

References 10 publications

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“…For the rod material, the modulus of elasticity E, the Poisson's ratio ν and the linear coefficient of thermal contraction/expansion α coefficient of linear thermal expansion α are known. Specific values of asphalt concrete characteristics depending on the temperature can be found, for example, in works [5,7,8,11,12]. It is assumed that the temperature is the same for all points on the day surface of the asphalt concrete layer.…”

Section: Tangential Forces In the Contact Area Of Upper Layer With Thmentioning

confidence: 99%

“…Low-temperature cracks, also called frost cracks, are formed in the upper layers of soils during their freezing [1], in asphalt concrete pavement of the road [2] and airfields [3]. Studies [2,3] showed that the important, but insufficiently studied factor is the distribution of normal [5] and tangential (shear) forces [6] acting on the upper layer of the road. Monitoring the condition of the roads is performed with the use of physical measurements and associated devices [2].…”

Section: Introductionmentioning

confidence: 99%

“…When the upper layer of the road is frozen, the length of the segment decreases, but the tangential forces of friction and adhesion in the contact area of the segment with the base resist thermal deformations, but do not eliminate them. With increasing tangential forces, the tensile forces increase in the upper layer material, which can cause its destruction and the appearance of a crack [2][3][4][5][6][7][8]. Thus, the tangential forces of friction and adhesion in the contact area of the base and the upper layer significantly affect its state.…”

Section: Introductionmentioning

confidence: 99%

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Tangential forces in the contact area of upper road layer with the base

2018

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Low-temperature cracking is one of the main reasons for the deterioration of the upper layer of roads in regions with cold winters. A large number of works focused on deterioration prevention are known, however the interdisciplinary problem of low-temperature cracking remains relevant. The important, but insufficiently studied factor is the distribution of normal and tangential (shear) forces acting on the upper layer of the road. The objective of the current study was to clarify insight about the distribution of tangential forces in the contact area of the upper layer of the road with the base. There are works in which it is assumed that these forces are distributed by a piecewise linear law. We propose a mechanical and mathematical model and an analytical solution to the problem of the distribution of shear forces in the contact area of the upper layer with the base. The main result of the study: it is found that the distribution of shear forces in the segment of the asphalt concrete layer is described by a second-order polynomial. However, the shear stresses are distributed linearly over the entire length of the segment and reach the highest modulo values in the area of the end sections of the segment. The results of the presented study clarify the understanding of functioning of the upper road layer at low temperatures. By that, the contribution to the solution of the problem of increasing the crack resistance of roads in regions with cold winters is made.

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Section: Tangential Forces In the Contact Area Of Upper Layer With Thmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tangential forces in the contact area of upper road layer with the base

2018

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“…Other possible causes, such as frost heaving, are discussed, for example, in [7,8]. Analysis of the literature [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] showed that an important, but insufficiently studied quantitative characteristic of the considered damage is the assessment of the distance between cracks [2]. In this regard, the objective of the current study was modeling the conditions of the appearance of cracks of the considered type and predicting the distance between the cracks depending on the change negative temperature, the interaction of layers, the thickness of the upper layer, the coefficient of thermal expansion of the upper layer material and its modulus of elasticity (Young's modulus).…”

Section: Introductionmentioning

confidence: 99%

Cracks in upper road layer at negative temperature change: modelling and forecasting

Gavrilov

Kolesnikov

2018

MATEC Web Conf.

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Low-temperature cracking is one of the main reasons for the deterioration of the upper layer of roads in regions with cold climate. The material of the top layer can be, e.g., asphalt concrete or frozen soil. In this paper it is assumed that the temperature of the underlying layer is non- negative, i.e. a model in the form of a two-layer structure is used. A large number of works aimed at preventing wear are known, but the interdisciplinary problem of low-temperature cracking in seasonal freezing of soils remains relevant. In publications, as a rule, consider the destruction of freezing, that is, with a decrease in temperature. Much less attention is paid to the modeling and forecasting of damage to the upper layer of roads, if its temperature rises, but remains negative. In this case, the layer is compressed and the appearance of wave-like irregularities on the day surface (buckling) is possible. The objective of the current study was modeling the conditions of occurrence and prediction of damage to the upper layer of roads when the changes negative temperature. The paper uses methods of mathematical modeling of mechanical systems, as well as adaptation of the known results of other authors. The estimation of the critical wavelength at a bend of the compressed upper layer is given. The results of numerical simulation are consistent with the experimental data known in the literature.

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“…As a result of low-temperature action, thermal tensile stresses increase and when they exceed the fracture strength the low-temperature cracks may appear in the pavement. In the literature, low-temperature cracking is described as a form of thermal cracking that results from a single drop in temperature to an extremely low value observed during severe winters [2][3][4][5][6][7]. The critical cracking temperature may be determined in the laboratory using the Thermal Stress Restrained Specimen Test (TSRST), which was utilized by Monismith et al [8], Jung and Vinson [9], Pucci [10] and performed according to European standard EN 12697-46 [11].…”

Section: Introductionmentioning

confidence: 99%

Influence of Bitumen Type and Asphalt Mixture Composition on Low-temperature Strength Properties

Pszczoła¹,

Szydłowski²

2018

Preprint

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In regions with low-temperature action transverse cracks can appear in asphalt pavements as a result of thermal stresses that exceed the fracture strength of materials used in asphalt layers. To better understand thermal cracking phenomenon, strength properties of different asphalt mixtures were investigated. Four test methods were used to assess the influence of bitumen type and mixture composition on tensile strength properties of asphalt mixtures: tensile strength using the Thermal Stress Restrained Specimen Test (TSRST) and the Uniaxial Tension Stress Test (UTST), flexural strength using the Bending Beam Test (BBT) and fracture toughness using the Semi-Circular Bending Test (SCB). The strength reserve behavior of tested asphalt mixtures was assessed as well. The influence of cooling rate on strength reserve was investigated and correlations between results from different test methods were also analyzed and discussed. It was observed that the type of bitumen is a factor of crucial importance to low-temperature properties of the tested asphalt concretes. This conclusion was proved by all test methods that were used. It was also observed that the level of cooling rate influences the strength reserve and, in consequence, resistance to low-temperature cracking. It was concluded that reasonably good correlations were observed between strength results for the UTST, BBT and SCB test methods.

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Comparison of low-temperature cracks intensity on pavements with high modulus asphalt concrete and conventional asphalt concrete bases

Cited by 60 publications

References 10 publications

Tangential forces in the contact area of upper road layer with the base

Tangential forces in the contact area of upper road layer with the base

Cracks in upper road layer at negative temperature change: modelling and forecasting

Influence of Bitumen Type and Asphalt Mixture Composition on Low-temperature Strength Properties

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