Development and discussion of high-content rubberized asphalt technology
High-content rubberized asphalt,as new technology for road construction,has the advantages such as excellent low-temperature performance,good durability,high rubber powder consumption and high environmental benefits.In order to further promote the application of high-content rubberized asphalt technology,clarify its development status and demands,in this article,the technical features,colloidal structure,performance evaluation,mainstream processes,engineering application and problems of high-content rubberized asphalt were reviewed.Firstly,the concept of high-content rubberized asphalt was clarified,and its modification mechanism different from traditional rubber asphalt was explained.Secondly,based on the occurrence of chemical reactions,the existing physical and chemical methods were compared and analyzed.And the modification process of high-content rubberized asphalt was further explored through the change of colloidal structure,the structural performance was analyzed in combination with its performance.Furthermore,an in-depth exposition was conducted on two chemical methods of desulfurization with rubber powder and boiling in asphalt,summarizing and evaluating the current mainstream high-content rubberized asphalt preparation technologies.Finally,the feasibility and superiority of high-content rubberized asphalt were discussed through engineering cases,and the existing engineering problems were pointed out.
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维普
