Amin El Gendy

Document Type

Article

Publication Date

9-3-2012

Abstract

construction procedure is roposed to increase the life cycle of pavement : structure on the Desert Development Corridor. The corridor is constructed as a rural two-lane with full-paved shoulders. When traffic volume reaches the point near-congestion, is converted to a four-lane divided highway associated with lane shifting of the old two-lane. A key factor of the proposed pavement structure is to let the pavement cross-section deteriorate uniformly by shifting lane marking. The parametric study shows that life cycle could be increased significantly if ecorridor is converted from two- to four-lane when the accumulated traffic volume reached half of the total design traffic yolume. The higher the climatic damage the lower the increase in life cycle. Cost analysis of construction alternatives provides strong evidence that the proposed construction method is a good alternative for increasing the life cycle of pavement structures of the Desert Development Corridor. For interest rates less than 6%, the proposed construction method is the economical solution with expected cost reduction ranges between 6.3% and 8,4% of the total project cost. The proposed technique is more effective for roadways built with small layer thicknesses. Furthermore, the proposed approach iS applicable to any new development corridor especially in rural areas where traffic yolume is very low.

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