In order to investigate the influence of warm mixture additive on the road performance and forming temperature of stone matrix asphalt with chopped basalt fiber,marshall test,immersion marshall test and rutting test were used to evaluate the influence of warm mixture additive on the water stability and high sta-bility of stone matrix asphalt with chopped basalt fiber.By comparing the volume index of the mixture at differ-ent molding temperatures,the influence of the warm mixture additive on the molding temperature of the mix-ture was evaluated.The results show that the water stability and high temperature stability of the chopped ba-salt fiber asphalt mixture SMA-13 are decreased after adding 0.8％LX-450 warm mixture additive,but it still meets the requirements of current regulations.At the same time,the compaction temperature of the speci-men is reduced from the original 165 ℃ to 145 ℃,which can significantly reduce the molding temperature of the mixture.
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