Analysis of geopolymer concrete columns

摘要: Ordinary portland cement (OPC) has been traditionally used as the binding agent in concrete. However, it is also necessary to search for alternative low-emission agents concrete reduce environmental impact caused by manufacturing of cement. Geopolymer, known inorganic polymer, one such material that uses by-product fly ash instead Recent research shown ash-based geopolymer suitable properties its use a construction material. Since strength development mechanism different from OPC binder, obtain constitutive model predict load–deflection behaviour and structural members. This article investigated suitability using an existing stress–strain originally proposed Popovics It found equation can be with minor modification expression curve fitting factor, better fit post-peak parts experimental curves. The slightly modified set equations was then non-linear analysis reinforced columns. A good correlation achieved between predicted measured ultimate loads, curves deflected shapes 12 slender test