To research the acid rain resistance and mechanism of epoxy asphalt mixture,the acid rain resistance of epoxy asphalt mixture,SBS modified asphalt mixture and 70# base asphalt mixture were studied by wet and dry cyclic immersion test,contact angle test and road performance test.The results shown that acid rain can significantly reduce the adhesion of asphalt,and the road performance and aging durability of asphalt mixture.Epoxy asphalt had the best adhesion with the aggregate,and its mixture had the strongest acid rain resistance,and can be used in OGFC asphalt mixture.The epoxy asphalt had the polar groups,high-strength cohesion and low-shrinkage thermosetting resins that can enhance its adhesion,thereby effectively resisting water erosion,spalling and temperature stress cracking.With the addition of waste rubber powder and modified bamboo fiber,the “structural asphalt” in the epoxy asphalt mixture increased,the void ratio decreased,and it had good compactness.The spatial network structure formed can play the role of “reinforcement” and “toughening”,further enhancing the mechanical properties,impermeability and acid rain resistance of the mixture.
Zhu Juncai, Jiang Kang, Wu Chaofan, Liu Kefei
. Study on acid rain resistance and mechanism of epoxy asphalt mixture[J]. New Chemical Materials, 2021
, 49(11)
: 176
-182
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.11.037
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