Top-Down Cracking – Pavement Interactive
Top-down cracks commonly observed and occur within 1-5 years of paving. California. Analysis showed that top-down cracks could form due to truck tire edge stresses that produce high surface tensile strains. Washington State. Top-down cracks form within 3-8 years of paving on AC thicknesses of 160 mm or greater. Florida. Top-down cracks form within 5-10 years of paving …">

Top Down Cracking in Asphalt Pavements

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Top-Down Cracking – Pavement Interactive

Top-down cracks commonly observed and occur within 1-5 years of paving. California. Analysis showed that top-down cracks could form due to truck tire edge stresses that produce high surface tensile strains. Washington State. Top-down cracks form within 3-8 years of paving on AC thicknesses of 160 mm or greater. Florida. Top-down cracks form within 5-10 years of paving …

Top-Down Cracking in Asphalt Pavements: Causes, …

Jan 01, 2008 · Within 1 year longitudinal cracks appeared in the pavement surface. The cracking appeared in the driving lanes of both the north and southbound directions. The severity of the cracking ranged from low to high. An investigation concluded that cracking on the project was surface initiated and caused by a number of factors.

Cited by: 24

A review of top-down cracking in asphalt pavements: …

Oct 01, 2020 · In the last decades, a new type of distress has been observed more and more frequently on asphalt pavements. This distress, ascribable to fatigue failure, has been named top-down cracking (TDC) because it consists in longitudinal cracks that initiate on the pavement surface and then propagate downwards.

Cited by: 2

Top Down Cracking | Washington Asphalt Pavement …

Top Down Cracking. Top down cracking appears to be a common mode of HMA pavement distress in at least several states and countries. Traditionally, pavement cracking is thought to initiate at the bottom of the HMA layer where the tensile bending stresses are the greatest and then progress up to the surface (a bottom-up crack).

Top-Down Cracking in Asphalt Pavements: Causes, Effects ...

Jan 01, 2008 · After this so-called “top-down cracking” was discovered on this first project, other pavements began manifesting similar traits. Therefore, a statewide evaluation was conducted to determine the extent of this distress in other pavements. As a result of this study 28 sites were evaluated and of these 18 contained top-down cracking.

Top-Down Cracking in Asphalt Pavements: Causes, Effects ...

Top-down cracking is a complex, interactive phenomenon affected by pavement structure, environmental factors, asphalt mixture properties and traffic loading. Due …

Top Down Cracking | Washington Asphalt Pavement …

Top down cracking appears to be a common mode of HMA pavement distress in at least several states and countries. Traditionally, pavement cracking is thought to initiate at the bottom of the HMA layer where the tensile bending stresses are the greatest and then progress up to the surface (a bottom-up crack).

A MECHANISTIC-EMPIRICAL MODEL FOR TOP-DOWN …

the fatigue life of asphalt pavements. The shear strain at the edge of tire is considered as critical pavement structural response for top-down cracking, which is also considered in the fatigue life model. The model for prediction top-down cracking is calibrated and verified using the

A Mechanistic–Empirical Model for Top–Down Cracking of ...

Myers, L. A., and R. Roque (2002) â Top-down Crack Propagation in Bituminous Pavements and Implications for Pavement Management.â Journal of the Association of Asphalt Paving Technologists, Vol. 71, 651â 670.

Evaluation of Laboratory Cracking Tests Related to Top ...

Dec 10, 2016 · Top-down cracking (TDC) is now recognized as a prominent mode of failure in asphalt pavements. There has been much research conducted to characterize the failure mechanisms of TDC but there are still large gaps of knowledge regarding TDC throughout the industry. As TDC

Assessment of Top-Down Cracking Causes in Asphalt …

Cracking originated at the top of asphalt layers (top-down cracking) observed in temperate-climate countries is a degradation mechanism which has not been fully researched. In order to access this “new” degradation in Portugal, a sampling plan has been set in a high thickness pavement, including ... 3 . Pavements Top-Down Cracking ...

Investigation of mechanisms of top-down fatigue cracking ...

Mar 21, 2017 · Various types of responses have been selected in the past as the driving forces of the top-down cracking. However, the most appropriate candidate for top-down cracking is the horizontal tensile strain at the pavement surface, considering the horizontal tensile strain at the bottom of asphalt layer has been historically used as the critical response for bottom-up …

Characterizing the fatigue cracking behaviors of OGFC ...

1.Introduction. Fatigue cracking is a major distress pattern of asphalt pavement. Fatigue failure can be caused by many factors, such as poor construction quality, inadequate structural design, traffic load, temperature, etc., or the coupled effect of these factors , , .For pavements with a thin surface layer, fatigue cracking generally initiates at the bottom of the HMA layer and …

Multilayer Boundary-Element Method for Evaluating Top-Down …

Jan 01, 2004 · Cracking in hot-mix asphalt (HMA) pavements is a major mode of premature failure. Recent work at the University of Florida has led to the development of a new viscoelastic fracture mechanics-based ...

A Mechanistic-Empirical Model for Predicting Top-Down ...

Jul 13, 2017 · Top-down cracking (TDC) is a major distress mode in asphalt pavements. It initiates from or near the pavement surface then propagates downward through the asphalt layer and is usually observed as the form of longitudinal cracking in the pavement wheelpath. Due to its complexity, few mechanical-based systematic models are available to accurately ...

Influence of Horizontal Traction on Top-Down Cracking in ...

Kim, J., Roque, R., Byron, T.: Viscoelastic analysis of flexible pavements and its effects on top-down cracking. Journal of Materials in Civil Engineering …

TOP DOWN CRACKING IN FLEXIBLE PAVEMENTS

Apr 02, 2017 · TOP DOWN CRACKING IN FLEXIBLE PAVEMENTS 1. TOP-DOWN CRACKING IN FLEXIBLE PAVEMENTS 2. INTRODUCTION Top-Down cracks in pavements initiate at the pavement surface and propagate downward. The studies in TDCs are not given enough importance till late 1990’s. For many years, researchers have made an effort to identify the …

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