A STUDY OF RESISTANCE TO AGGREGATE FRETTING OF POROUS ASPHALT PAVEMENTS

Porous asphalt pavements allow designers to introduce more sustainability into projects and lessen their environmental impact. Current design procedures are based primarily on hydrologic considerations; comparatively little attention has been paid to their structural design aspects. As their use grows, a design procedure and representative material structural properties are needed to ensure that porous pavements do not deteriorate excessively under traffic loads. The objective of this project was to develop a simple, easy to apply design procedure for the structural design of porous asphalt pavements. Two methodologies were considered for such a structural design procedure: ( a) the 1993 AASHTO Pavement Design Guide empirical approach, and ( b) the mechanistic–empirical approach employed by the AASHTOWare Pavement ME Design software. A multifactor evaluation indicated the empirical 1993 AASHTO design procedure to be the most appropriate platform at this time. It is noted, however, that both design procedures lack validation of porous asphalt pavements against field performance. AASHTO design parameters and associated material characteristics are recommended, based on an extensive literature review. For “thin” open-graded base structures (12 in. or less), the AASHTO procedure is performed as published in the 1993 Guide. For “thick” base structures (>12 in.), the base/subgrade combination is considered a composite system which supports the porous asphalt layer; an equivalent deflection-based approach is described to estimate the composite resilient modulus of the foundation system, prior to applying the 1993 AASHTO design procedure.

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Pervious Concrete and Porous Asphalt Pavements Performance for Stormwater Management in Northern Climates

Cold Regions Engineering 2009 ◽

10.1061/41072(359)31 ◽

2009 ◽

Cited By ~ 4

Author(s):

Robert M. Roseen ◽

Thomas P. Ballestero ◽

Kristopher M. Houle ◽

Joshua F. Briggs ◽

James J. Houle

Keyword(s):

Stormwater Management ◽

Pervious Concrete ◽

Asphalt Pavements ◽

Porous Asphalt

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Differences in the Ageing Behavior of Asphalt Pavements with Porous and Stone Mastic Asphalt Mixtures

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/03611981211032218 ◽

2021 ◽

pp. 036119812110322

Author(s):

Ruxin Jing ◽

Aikaterini Varveri ◽

Xueyan Liu ◽

Athanasios Scarpas ◽

Sandra Erkens

Keyword(s):

Asphalt Pavement ◽

Tensile Tests ◽

Asphalt Pavements ◽

Porous Asphalt ◽

Mastic Asphalt ◽

Stone Mastic Asphalt ◽

Aggregate Packing ◽

Indirect Tensile ◽

The Fourier Transform ◽

Air Void

The degradation of bituminous materials as a result of ageing has a significant effect on asphalt pavement performance. In this study, one porous asphalt (PA) section and one stone mastic asphalt (SMA) asphalt pavement section were designed and constructed in 2014 and exposed to the actual environmental condition. To study the change in the pavement’s mechanical properties, asphalt cores were collected from both test sections annually. The change in stiffness modulus was determined via cyclic indirect tensile tests. To investigate the ageing behavior across the pavement depth, the bitumen was extracted and recovered from 13 mm slices along the depths of the cores. The chemical composition and rheological properties of the field-recovered bitumen, and that of original bitumen aged in standard short- and long-term ageing protocols, were investigated by means of the Fourier Transform Infrared (FTIR) spectrometer and Dynamic Shear Rheometer. The results show that the effect of mineral aggregate packing, and therefore of air-void distribution and connectivity, on the ageing sensitivity of the pavements with time was significant, as the changes in the stiffness of the PA mixture were greater than that of SMA mixture. In addition, the results of field-recovered bitumen show that there is an ageing gradient inside the porous asphalt layer, however, the ageing of SMA mainly happens on the surface of the layer. Finally, the field-recovered and laboratory-aged bitumen results demonstrate a weak relation between field and standard laboratory ageing protocols.

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Effect of Clogging on the Permeability of Porous Asphalt Pavement

Advances in Materials Science and Engineering ◽

10.1155/2020/4851291 ◽

2020 ◽

Vol 2020 ◽

pp. 1-9 ◽

Cited By ~ 2

Author(s):

Yaolu Ma ◽

Xianhua Chen ◽

Yanfen Geng ◽

Xinlan Zhang

Keyword(s):

Pore Water ◽

Evaluation Method ◽

Pore Water Pressure ◽

Asphalt Pavement ◽

Water Pressure ◽

Asphalt Pavements ◽

Porous Asphalt ◽

Capacity Coefficient ◽

Drainage Capacity ◽

High Level

The purpose of this paper is to report on the drainage of porous asphalt pavement evaluation method suited for use in analyzing clogging effect. To preliminarily reveal the decrease in permeability caused by clogging of permeable asphalt pavement, an innovative device was proposed to evaluate the anisotropy of permeability influenced by clogging, and the maximum drainage capacity without surface ponding can be obtained when the supplied water was controlled. Then, finite element models for asphalt pavements with hydromechanical coupling were proposed based on porous media theory and Biot’s theory. The variation in pore water pressure was simulated by considering the decrease in voids and the increase in clogging grains. The results indicate that the internally retained water should not be ignored because the semiconnected voids were filled with water rapidly at the beginning of permeability tests. To avoid surface ponding, the drainage capacity coefficient (DCC) can be used to evaluate the maximum drainage capacity (MDC) influenced by clogging. Moreover, the pore water pressure increased due to the reduction in voids and a high level of clogging. In addition, the peak value of pore water pressure is also affected by the upper-layer height of the pavement. Under the action of clogging and driving load, a reasonable thickness of the upper layer and a drainage evaluation should be considered to improve road safety.

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The Effect of Compaction Temperatures and Numbers on the Air Void Level of Porous Asphalt Pavements

10.52460/issc.2021.014 ◽

2021 ◽

Author(s):

Ahmet Buğra İbiş ◽

Burak Şengöz ◽

Ali Topal ◽

Derya Kaya Özdemir

Keyword(s):

Heavy Traffic ◽

Experimental Studies ◽

Asphalt Mixture ◽

Hollow Structure ◽

Asphalt Pavements ◽

Void Content ◽

Porous Asphalt ◽

Compaction Energy ◽

Air Void ◽

Air Void Content

Porous asphalt pavement is defined as an asphalt concrete that is designed with open gradation aggregate which helps in removing the water with an air void content of about 20% by creating drainage channels. Open gradation consists of large amounts of coarse aggregates and small amounts of fine aggregates. The water is drained due to this hollow structure, this air void content in the porous asphalt mixture which inevitably decreases with time is the main parameter affecting the service life as well as the structural and functional performance. Moreover, the reduction in air void content is one of the main reasons for the loss of permeability in porous asphalt pavements and this lead to the increase in pavement density under heavy traffic conditions. Each country has its own technical asphalt specification involving the required compaction energy and temperature. This study involves the effect of compaction temperatures and numbers on the air void in porous asphalt pavements prepared with 50/70 penetration grade bitumen. As a result of experimental studies, it has been observed that the reduced compaction temperature and the number of compaction (energy) increase the air void level in porous asphalt pavements.

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