Study on Design and Road Performance of Ultra Thin Paving Asphalt Mixture
Aiming at the problems of difficult compaction,poor water loss resistance and high-temperature stability of traditional ultra-thin pavement materials,the design and road performance evaluation indexes of ultra-thin pavement materials are proposed by using dense gradation design and composite modification methods.A new high-performance ultra-thin pavement maintenance material is developed by using composite additives with warm mixing anti rutting effect and combining with indoor experiments.Based on the dy-namic modulus,high-temperature creep,fatigue performance and other mechanical performance tests,the attenuation of mechanical properties of ultra-thin pavement materials under long-term traffic load is explored.The results show that the ultra-thin pavement material has excellent road performance and ease of construction,and can ensure that it can still reach the standard compactness under the construction conditions of fast cooling speed of the bridge deck.
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