A　recycled　concrete　aggregate　(RCA)　has　much　higher　water　absorption　content　compared　to　a　natural　aggregate　and　could　significantly　influence　the　creep　properties　and　durability　of　concrete.　This　article　investigates　the　influence　of　RCA　and　its　water　absorption　content　on　the　creep　properties　of　concrete　and　develops　a　model　to　predict　the　creep　of　recycled　aggregate　concrete　(RAC).　Two　types　of　RCA　obtained　from　the　lab　and　field　with　different　water　absorption　contents　were　used　to　prepare　RAC.　RCAs　were　mixed　with　natural　aggregates　at　four　replacement　ratios　(0,　50　%,　70　%,　and　100　%).　Creep　and　shrinkage　tests　were　conducted　to　measure　the　specific　total　creep,　specific　basic　creep,　coefficients　of　total　creep　and　basic　creep,　and　shrinkage　of　sealed　and　unsealed　concrete　specimens　subjected　to　sustained　compression　loads.　The　existing　total　creep　model　was　modified　by　considering　the　influence　of　water　absorption　of　residual　mortar　in　RCAs,　and　a　new　model　was　calibrated　and　verified　with　experimental　data.　The　results　show　that　both　the　total　and　basic　creep　of　RAC　increased　with　the　RCA　replacement　ratio　and　the　water　absorption　of　RCA.　The　total　creep　values　of　RAC　were　much　higher　than　the　basic　creep　values　of　RAC.　Type　II　RCA,　with　RCA　that　had　a　higher　water　absorption,　produced　higher　creep　values　than　Type　I　RCA.　The　modified　total　creep　model　presented　high　accuracy　in　predicting　the　total　creep　of　RAC,　and　thus　may　be　potentially　used　to　predict　total　creep　of　RAC　when　mixed　with　dry　RCAs　in　practice.　Copyright　©　2018　by　ASTM　International,　100　Barr　Harbor　Drive