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|Title||A Proposal for Asphalt Wearing Course Specification in Palestine|
The undertaken research work includes the development of a proposal for wearing asphalt layer specifications that is suitable for local aggregate and bitumen inPalestine. The proposed specifications has been developed after collecting and reviewing eleven specifications for asphalt wearing layer and dividing them into three groups. These groups are the international group, the regional group and the local Palestinian requirements. This research differs from the previous researches because it introduces a special specification for the wearing asphalt layer which suits the local materials inPalestine. In addition to the new methodology which was used by the researcher to select the most suitable specifications. The adopted mechanism was drawing one frame consists of a minimum and maximum gradations for all the collected specifications and selecting several asphalt mixes with different gradations. These gradations cover the wide range between the minimum and maximum of the frame. Also, the mechanical properties for the eleven specifications were studied and the researcher selected good mechanical properties to be adopted for the proposed specification. Finally, the gradation which achieved the selected mechanical properties with minimum bitumen content was selected as a proposed specification. It is recommended that the developed proposal specification to be used in the construction of the asphalt wearing layer inPalestine. The proposed specification is expected to solve the problems between the stakeholders of the roads if it is used and unified. It is also expected to improve the planning and implementation of roads projects.
|Publisher||the islamic university|
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