Rapid-hardening　controlled　low　strength　material　(CLSM)　containing　recycled　fine　aggregate　from　construction　and　demolition　(C&D)　waste　was　prepared　with　the　sprayed　concrete　accelerator.　Eleven　mixtures　were　made　with　different　accelerator-to-binder　(A/B),　water-to-solid　(W/S)　and　binder-to-recycled　fine　aggregate　(B/R)　ratios.　The　workability　(flowability　and　bleeding　rate)　of　fresh　mixture　and　the　mechanical　properties　(early　strength,　long-term　strength　and　dynamic　elastic　modulus)　of　hardened　material　were　tested.　The　results　show　that　adding　(20　similar　to　50%)　accelerator　reduces　the　bleeding　rate　of　CLSM　by　48.8　similar　to　84.6%,　with　no　significant　effect　on　the　flowability.　Improved　flowability　of　CLSM　can　be　achieved　by　increasing　the　W/S　or　B/R　ratio,　with　increased　or　reduced　bleeding　rate,　respectively.　The　optimal　A/B　ratio　for　best　early　strength　development　is　40%,　with　the　early　hour　strength　(2　similar　to　4　h)　up　to　0.41　0.79　MPa.　When　A/B　ratio　is　held　constant,　the　early　strength　of　CLSM　is　affected　by　the　amount　of　cementitious　materials　and　the　actual　content　of　free　water.　An　accurate　predictive　model　for　the　long-term　strength　of　CLSM　was　established　through　regression　analysis,　in　which　three　control　parameters　are　considered.　A　power　function　relationship　between　the　compressive　strength　and　the　dynamic　elastic　modulus　is　also　established.　Dynamic　elastic　modulus　can　thus　serve　as　an　indicator　for　evaluation　of　the　mechanical　properties　of　CLSM.　(C)　2018　Elsevier　Ltd.　All　rights　reserved.