Corrosion　protection　lining,　as　a　type　of　trenchless　rehabilitation　technology,　consists　of　installation　of　flexible　high-density　polyethylene　corrosion　protecting　liner　with　V-shaped　shear　keys　inside　the　existing　pipe　and　filling　the　gap　between　the　pad　and　the　pipe　with　cement　paste.　The　corrosion　protection　lining　can　effectively　improve　the　flow　capacity,　corrosion　resistance,　deformation　resistance,　and　anti-leakage　performance　of　the　pipeline　and　avoid　large-scale　excavation　and　replacement　of　components.　To　investigate　its　improving　effect　on　the　bending　capacity　and　deformation　resistance　of　ductile　iron　pipeline,　corrosion　protection　lining　was　applied　to　the　rehabilitation　of　the　existing　DN400　ductile　iron　water　pipeline　push-on　joints,　and　a　series　of　pseudo-static　tensile　and　bending　test　were　performed　on　the　push-on　joints　of　the　water-pressurized　ductile　iron　pipeline　without　soil　coverage.　The　mechanical　behaviors　and　failure　modes　of　the　push-on　joints　rehabilitated　by　the　corrosion　protection　lining　were　investigated　under　both　axial　tensile　loading　and　lateral　bending.　Failure　criteria　of　the　liner-reinforced　pipeline　joints　were　established.　Comparison　of　the　mechanical　properties　of　the　pipeline　before　and　after　rehabilitated　by　corrosion　protection　lining　show　that　corrosion　protection　lining　can　significantly　improve　the　axial　tensile　and　flexural　bending　capacity　of　the　push-on　joint.　The　experimental　results　validate　and　support　the　application　of　corrosion　protection　lining　to　improving　structural　behaviors　of　the　burial　water　pipelines　in　engineering　practice.　©　2019,　Editorial　Board　of　Journal　of　Harbin　Institute　of　Technology.　All　right　reserved.