The　amide-structural　polycarboxylate　superplasticizers　(amide-PCEs)　were　synthesized　by　amidation　reaction　between　polyacrylic　acid　(PAA)　and　amino-terminated　methoxy　polyethylene　glycol　(aminoPEG)　under　different　conditions,　and　the　effects　of　amide-PCE＇s　synthesis　on　amidation　rate　and　flow　performance　of　cement　paste　were　investigated.　Fourier　Transform　Infrared　Spectroscopy　(FTIR),　H-1　Nuclear　Magnetic　Resonance　(H-1　NMR),　and　molecular-weight　measurements　were　used　for　structural　characterization,　and　the　results　confirmed　ideal　amide　structure　and　sufficient　amidation　reaction.　Amide-PCE　with　the　carboxyl　amino　ratio　of　4:1　exhibited　the　lowest　surface　tension,　highest　adsorption　percentage,　and　the　best　paste　fluidity　results.　Based　on　the　above　results,　the　dispersion　and　adsorption　mechanisms　of　amide-PCE　in　cement　water　system　were　discussed.　The　application　performances　in　concrete　showed　that　amide-PCE　had　similar　slump　to　that　of　conventional　PCE,　but　also　had　better　air-entraining　ability,　bubble　retention　and　concrete　frost-resistance　than　those　of　conventional　PCE.　Depending　on　this　amide　structure　and　good　performances,　amide-PCE　shows　broad　application　prospects.　(C)　2014　Elsevier　B.V.　All　rights　reserved.