Research on Application of 100%RAP Emulsified Asphalt Cold Regenerated Mixture Base
In order to evaluate the effect of using emulsified asphalt regenerant and 100%RAP using on new pavement base,a test sec-tion was built in Henan section of Lianhuo Expressway reconstruction and expansion project.FWD was used to monitor its structural performance for 12 months and rutting test on the 540 th day after construction,a test section was built in Henan Province.Through in-door verification test,the influence of molding methods on the volume parameters of recycled asphalt mixture was studied.In addition,the resilient modulus and indirect tensile strength were tested,and the results were analyzed.The effects of storage time(7,14,28 d)and curing time(1,3,7,26,56 d)on mechanical properties of loose mixture were studied.The results show that:the indoor mechanical test verifies that the stiffness of regenerated mixture increases with the prolongation of curing time;the longer the storage time,the high-er the stiffness and tensile strength in a short time;when the curing time is longer,the test behavior is not verified;using emulsified as-phalt cold regenerated mixture as the base is a alternative to RAP.
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