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Developing a Pay Adjustment Technique for Flexible Pavement Highways Projects

Alaa M. Ali
Misr High Institute for Engineering & Technology, Mansoura, Egypt

Abstract—The influence of variations in asphalt concrete properties in flexible pavement performance during its design life is a critical factor in highways construction. Shortly after laying down the asphalt concrete, it is hardened; therefore, no adjustment can be applied. Quite often, materials quality does not meet specification requirements. The effect of this non-conformation on pavement serviceability has not been established; however, it results in reduced payments to contractors. The pay adjustment methods currently used in Egypt is based mainly on discounting the present cost from the contractor's payment. This method of penalizing contractors is not based on sound engineering principles. Thus, it is not always a reliable measure of pavement's reduced serviceability. The purpose of this study is to develop a pay adjustment method based on actual serviceability of the pavement. It is based on serviceability of the pavement defined in the ASSHTO method of thickness design. It assumes that the maximum penalty that a contractor can ever pay is equivalent to the adjusted cost of an overlay which upgrades the pavement to its design serviceability. The actual penalty is then, computed based on the actual loss of serviceability experienced over time.

Index Terms—pay adjustment, HMA pavement, highways projects

Cite: Alaa M. Ali, "Developing a Pay Adjustment Technique for Flexible Pavement Highways Projects," International Journal of Structural and Civil Engineering Research, Vol. 4, No. 3, pp. 276-281, August 2015. doi: 10.18178/ijscer.4.3.276-281