Using　the　dynamic　mechanical　thermal　analysis　(DMTA)　method,　the　frequency　dependence　of　dynamic　mechanical　properties　of　cement　asphalt　(CA)　binders　were　examined　within　the　testing　frequency　range　between　0.1　and　100　Hz　in　this　study.　Based　on　the　time-temperature　superposition　(TTS)　principle,　the　master　curves　of　storage　modulus　(E′),　loss　modulus　(E″),　and　loss　factor　(tanδ)　of　CA　binders　within　a　wide　frequency　range　from　1　×　10-5　to　1　×　1010　Hz　were　obtained.　The　results　showed　that　the　E′,　E″,　and　tanδ　of　CA　binders　were　highly　sensitive　to　the　frequency　due　to　the　incorporation　of　asphalt.　The　value　of　E′　rose　as　the　frequency　increased,　whereas　E″　and　tanδ　showed　different　trends　as　the　frequency　increased.　Storage　modulus　rising　factor　ΔE′　and　peak　value　of　loss　factor　tanδmax　could　be　used　to　characterized　the　frequency　dependence　of　dynamic　mechanical　properties.　A　simple　solid　model　with　fractional　derivation　was　established　to　characterize　the　dynamic　viscoelastic　behavior　of　CA　binders　and　was　in　excellent　agreement　with　experiment　data　over　both　testing　and　a　wide　range　of　frequency.　Correlations　were　observed　between　model　parameters　and　asphalt　content　of　CA　binders.　Our　results　contribute　to　the　current　field　by　providing　the　evidence　for　the　dynamic　mechanical　properties　estimation　of　CA　mortar　under　various　loading　frequency.　©　2024　American　Society　of　Civil　Engineers.