The Effect of Interlayer Bond on the Service Life of Asphalt Pavements

2016 ◽  
Author(s):  
Borislav Hristov ◽  
◽  
Frohmut Wellner
Keyword(s):  
Service Life ◽  
Asphalt Pavements ◽  
Interlayer Bond

scholarly journals Study on the Influential Factors of Noise Characteristics in Dense-Graded Asphalt Mixtures and Field Asphalt Pavements

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Zhaoyang Guo ◽  
Junyan Yi ◽  
Sainan Xie ◽  
Jianpeng Chu ◽  
Decheng Feng
Keyword(s):  
Service Life ◽  
Aggregate Size ◽  
Low Noise ◽  
Influential Factors ◽  
Asphalt Mixtures ◽  
Asphalt Pavements ◽  
Maximum Aggregate Size ◽  
Noise Characteristics ◽  
Air Void ◽  
Pavement Noise

Determining the influential factors of noise characteristics in dense-graded asphalt mixtures and field asphalt pavement is important in constructing highways that are both low noise and environmentally friendly. In this study, the effects of nominal maximum aggregate size, asphalt binder type, air void percentage, and the service life of pavement on the noise absorption characteristics of asphalt mixtures were first investigated in laboratory. Thereafter, tire/pavement noise measurements were conducted on different types of dense-graded asphalt pavements. The effects of the service lives of the pavements, the types of the pavements, driving speeds, and test temperatures on the noise levels of the pavements were also studied. The Zwicker method is used to calculate psychoacoustic parameters on the tire/pavement noise spectrum. The laboratory results indicate that reducing the nominal maximum aggregate size, using rubber asphalt, and increasing air void percentage as well as surface texture depth improve the sound absorption performance of asphalt mixtures. The field measurements show that laying down asphalt pavements with a shorter service life or larger texture depth, using rubber asphalt, reducing traffic speed, and increasing air temperature can reduce noise.

Development of Cost-Effective Restriping Strategies using Standard Width and Wide Waterborne Paints on Asphalt Pavements in Hot and Humid Climates

2021 ◽  
pp. 036119812110018
Author(s):  
Momen R. Mousa ◽  
Marwa Hassan ◽  
Paul Carlson ◽  
Jason Davis ◽  
Saleh R. Mousa
Keyword(s):  
Service Life ◽  
Life Cycle Cost ◽  
Field Performance ◽  
Cost Effective ◽  
Product Evaluation ◽  
Asphalt Pavements ◽  
Coefficient Of Determination ◽  
Southern States ◽  
Hot And Humid Climates ◽  
Decision Making Model

In Louisiana, most districts restripe their roadways using waterborne paints every other year; this strategy is questionable in relation to efficiency and economy. Previous studies show substantial variability in paint service life throughout the U.S.A., ranging between 0.25 and 6.2 years. Shortcomings in modeling the retroreflectivity of waterborne paints appear to significantly contribute to these variations as several studies predicted these values using degradation curves with a coefficient of determination (R2) as low as 0.1. Therefore, the objective of this study was to develop new cost-effective restriping strategies using 4 in. and 6 in. wide waterborne paints (15 and 25 mils thickness) when applied on asphalt pavements in hot and humid climates. To achieve this objective, National Transportation Product Evaluation Program data were collected and analyzed to evaluate the field performance of waterborne paints commonly used in southern states of the U.S.A. and to develop a decision making model that may be used by transportation agencies to predict when to restripe their roadways. Results indicated that 4 in. wide standard paints exhibited service life up to four years depending on the line color, traffic and initial retroreflectivity, while 4 in. wide high build paints had a service life of at least three years. Based on a life-cycle cost analysis, it was concluded that Louisiana Department of Transportation and Development could restripe its district roads every three years instead of the current two-year period using the same product (4 in. or 6 in. wide) saving about $20 million or $2 million, respectively, every year when restriping a 5,000-mi network.

scholarly journals Effect of Aging and Moisture Damage on Fatigue Cracking Properties in Asphalt Mixtures

2021 ◽  
Vol 11 (22) ◽  
pp. 10543
Author(s):  
Sung Lin Yang ◽  
Cheolmin Baek ◽  
Hee Beom Park
Keyword(s):  
Service Life ◽  
South Korea ◽  
Material Properties ◽  
Fatigue Cracking ◽  
Moisture Damage ◽  
Asphalt Mixtures ◽  
Asphalt Pavements ◽  
Heavy Vehicles ◽  
Road Pavement ◽  
Damage And Fracture

Recently, damage to asphalt pavements in South Korea has increased because of direct and indirect factors caused by abnormal climatic changes, such as torrential rains, prolonged heatwaves in summer, and heavy snowfall in winter. Additionally, the use of medium and heavy vehicles is also a contributing factor. Therefore, an experimental procedure to study the moisture damage and fracture properties of asphalt pavements considering the recent changes in precipitation properties, deterioration of road pavement, and traffic conditions in South Korea was developed in this study. Additionally, changes in material properties according to the indoor aging process and fatigue crack resistance were evaluated for hot mix and warm mix asphalt mixtures of the same grade and different initial production and construction temperatures. To evaluate the effect of aging and moisture damage on fatigue cracking, the experimental coefficient values of the predictive model were calculated for each condition. It was observed that the material properties of hot mix asphalt mixtures changed with an increase in aging and moisture damage. The service life of the pavement was reduced by approximately 40–80% owing to moisture damage, whereas aging had a greater effect on fatigue life as the service life increased.

scholarly journals Master Function for Analytical Determination of the Interlayer Bond Shear Stiffness and Fatigue Functions for Asphalt Pavements

2018 ◽  
Vol 251 ◽  
pp. 01001
Author(s):  
Borislav Hristov
Keyword(s):  
Fatigue Testing ◽  
Shear Stiffness ◽  
Computational Design ◽  
Asphalt Pavements ◽  
Analytical Determination ◽  
Sigmoid Function ◽  
Finite Element Program ◽  
Cyclic Shear ◽  
Master Function ◽  
Interlayer Bond

In order to determine the shear stiffness at the interface between asphalt layers and to take into account the interactions of repeated traffic loading, acceleration and braking processes as well as temperature influence, a complicated apparatus for cycling testing of the interlayer bond (CTIB) has been developed. An extensive experimental procedure has been created to include all factors that influence the interlayer bond. Using the experimental results, a master function for the analytical assessment of the shear stiffness has been established. The regression which approximates most accurately the experimentally determined shear stiffness values is the sigmoid function. Through implementation of the master function into a finite element program the fatigue status of asphalt pavements, which is affected by the interlayer bond of different quality, have been calculated over the service life of 30 years using the German method for computational design according to RDO Asphalt 09. The results presented below are based on the results of IGF project “Cyclic Shear Stiffness and Shear Fatigue Testing for Evaluation and Optimization of Interlayer Bond in Asphalt Pavements”, supported by the Association of Industrial Research Communities (AIF) of the German Asphalt Institute (DAI) in cooperation with TU Braunschweig.

Expected Service Life of Hot-Mix Asphalt Pavements in Long-Term Pavement Performance Program

2007 ◽  
Vol 1990 (1) ◽  
pp. 102-110
Author(s):  
Harold L. Von Quintus ◽  
Jagannath Mallela ◽  
Jane Jiang ◽  
Mark Buncher
Keyword(s):  
Service Life ◽  
Hot Mix Asphalt ◽  
Asphalt Pavements ◽  
Pavement Performance

scholarly journals Quest for improving service life of asphalt roads

2020 ◽  
Vol 4 ◽  
pp. 154-162
Author(s):  
Manfred N. Partl
Keyword(s):  
Service Life ◽  
Building Materials ◽  
Phase Change Materials ◽  
Material Design ◽  
Point Of View ◽  
Asphalt Pavements ◽  
Force Microscopy ◽  
The Road ◽  
Atomic Force ◽  
Materials Recycling

Selected results and initiatives in modern asphalt pavement research for increasing service life of asphalt pavements under the aspect of sustainability and multifunctional use of roads are summarized. Focus lies on innovative approaches and own experience, jointly elaborated during the last decades within the road engineering/sealing components lab at Empa and both the highway/railways engineering and building materials group at KTH. This includes material concepts and design as well as pavement system and construction aspects from an experimental and modelling point of view. It includes also the application of powerful experimental and computational tools, such as Atomic-Force-Microscopy (AFM), X-Ray-Computer-Tomography (CT), Digital-Imaging-Correlation (DIC) and Discrete-Element-Method (DEM). As for materials, recycling issues and the use of Phase-Change-Materials (PCM) or metallic ingredients for inductive thermal crack healing are addressed. In order to remind that material design must also account for the workability during the process of compaction, the new Compaction-Flow-Test (CFT) developed at KTH is shortly presented. Innovative ideas for structural material composition are also mentioned, such as “artificial aggregates” or “additive manufacturing”, being aware that there is still a long way to go. Regarding pavement systems, ideas for multifunctional road applications are proposed. Focus is also put on special issues, such as construction joints.

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