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Road Materials and Pavement Design
1468-0629
an International Journal
 

 ARTICLE VOL 9/4 - 2008  - pp.651-664  - doi:10.3166/rmpd.9.651-664
TITLE
Evaluation and Performance of Hydrated Lime and Limestone Powder in Porous Asphalt

ABSTRACT
Porous asphalt mixture or Open Graded Friction Course (OGFC) has many benefits that resulted in its extensive use and development. OGFC improves the friction of a wet pavement, surface reflection, traffic noise, wet weather driving conditions by allowing the water to drain through its porous structure and reduces the hydroplaning, the splashing and spraying of water in the air (acts as spray reducing surfaces). For achieving the advantages mentioned above, this mixture must have big Voids in Total Mix (VTM). The big VTM reduces durability of the paving mixtures and prone them to raveling. The use of hydrated lime in porous asphalt is an accepted practice for many highway agencies in order to increase mixture strength as well as to improve durability of asphalt pavements. The goal of this study is to evaluate the mechanical properties of lime treated OGFC before and after multiple cycles of freeze-thaw moisture conditioning and also to show that hydrated lime improves stability and durability of the mixture more than limestone powder.


AUTEUR(S)
M.AMERI, M.ESFAHANI

KEYWORDS
Porous asphalt, Hydrated lime, Limestone powder, VTM and OGFC.

LANGUE DE L'ARTICLE
Anglais

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