Characterizing the properties of sustainable semi-flexible pavement produced with polymer modified bitumen

Semi-Flexible Pavement (SFP) is a composite type of pavement produced by manufacturing porous asphalt mixes using open graded aggregate gradation to create 20-35% voids filled with grout (cement paste, cement mortar, etc.….). The resulting has the flexibility and some strength concrete pavement. current study focused on investigation widely available (in Iraq) waste material namely Rice Husk Ash (RHA) replace Ordinary Portland Cement (OPC) partially in grout, also, Polymer Modified Bitumen (PMB) develop Open-Graded Asphalt (OGA) without cellulous fibre. assessment mechanical properties obtained SFP PMB. results showed that PMB increased Marshall Stability up 100% indirect tensile 50%. Retained gave about 90% which quite higher minimum required limit (70%). also revealed RHA can be used as replacement for OPC mixes. All investigated percentages satisfactory properties.