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The huge investment in the airport has great significance for economic development and national defense. In the past 20 years, China has built a large number of airports, and its pavements have been exposed to the outdoor environment for a long time, resulting in easy be damaged. Therefore, in recent years, the problems faced by the renovation of airport pavements have become increasingly prominent. Based on the analysis of the core functional indicators of the airport pavement, the paper establishes the hierarchical structure model, functional model and cost model, and finally forms the optimization model of the renovation process decision. The simulation calculation is carried out through engineering examples, and the advantages, shortcomings and their gaps of different renovation processes are obtained, which prove the rationality and effectiveness of the model.

Airport concrete pavement in high latitude northwest area attacked by sulfate of different extent, which influence early strength and ultimate strength of cement concrete. In this paper, the double doped silica fume and fly ash concrete have been made long-term immersion test research. From the mass loss rate, compressive strength and flexural strength, effect on the corrosion resistance are studied with fly ash, silicon ash adding in a composite Portland cement. Methods to improve the performance of sulfate attack resistance are obtained by experiment.