DURABILITY OF POROUS ASPHALT PAVEMENT

Authors

  • Zainab Ahmed Al-Kaissi Highway and Transportation Engineering Department, Al-Mustansiriayah University, Baghdad, Iraq. Author
  • Omar Ghalib Mashkoor Highway and Transportation Engineering Department, BaghdadUniversity, Baghdad, Iraq Author

Keywords:

permeability, durability, rutting, open graded fraction courses, porous asphalt

Abstract

This work describes a research study for evaluating the durability performance of open-graded asphalt materials in terms of accelerated aging, moisture damage and permanent deformation. Such asphalt mixes have high porosity, which offers significantly better drainage properties than normal mix designs. However, these materials also exhibit poor durability and strength limiting their use in pavement application, to remedy this, fiber and/or polymer binder modifiers have been proposed. samples were prepared with and without the modifiers using Marshall mix procedures and slabs (approximately 1000 samples for Marshall test with 20 slabs for wheel track test (Dyna-Track) and were experimentally tested using various conditions ( short and long term aging ) and standardized testing procedures including wheel track test for rutting, falling-head test for permeability , cantabro abrasion test for particle loss resistance and indirect tensile test for strength. In general, the results indicate that the introduction of fiber modifiers leads to minor improvement in strength characteristics of the samples, while contributing to significant reduction in permeability. On the other hand, the introduction of polymer modifiers nearly doubled both the strength and permeability and also increased the air voids. 

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Published

2016-07-01

How to Cite

DURABILITY OF POROUS ASPHALT PAVEMENT. (2016). Journal of Engineering and Sustainable Development, 20(4), 53-70. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/580