الفهرس | Only 14 pages are availabe for public view |
Abstract Production of Portland cement is an energy intensive process that needs a large amount of natural resources as well as emits a large amount of carbon dioxide gas. Conversely, geopolymer has been emerged as a potential eco-friendly alternative to substitute the conventionally used Portland cement concrete. In addition, it allows utilization of by products such as ground granulated blast furnace slag (GGBS) and fly ash. Further, it possesses the benefits of expeditious strength gain, excellent mechanical properties and avoidance of water curing. However, geopolymer concrete has some weaknesses, brittleness, and heat curing for instance. Ferrocement compose of layers of continuous relatively thin metallic mesh embedded in mortar.It could be used to build a wide range of structures, and could be worked mainly by unskilled, though supervised, labor.The current study concentrated on the structural behavior of the geopolymer ferrocement beams subjected to axial flexural loading. For this purpose, an experimental plan was conducted and a finite element prototype with ANSYS2019-R1 was implemented. Nine samples geopolymer ferrocement beams 150 mm in thickness, 75 mm in width and 1700 mm in length were examined under flexural loading till failure. The variables in this research were the reinforcement steel bars and wire meshes, and number of layers of wire meshes. The performance of the geopolymer ferrocement beams was examined with particular consideration to first crack load, ultimate failure load, the mid-span deflection with various phases of loading, the cracking patterns, energy absorption and ductility index. Welded steel wire mesh beams showed better results in loading capacity, energy absorption and ductility. The analytical & experimental results were in a good agreement. The results demonstrated that good presentation of the geopolymer ferrocement beams. |