Abstract
As the infrastructure development growing worldwide, the demand for ordinary Portland cement (OPC) increases exponentially. Studies revealed that the production of one ton cement releases one ton of CO2 to the atmosphere due to the calcinations of lime stone and combustion of fossil oil. The production of cement is highly energy intensive and it consumes a substantial amount of natural resources. Davidovits (1978) proposed that binders can be produced by polymeric reaction of alkaline liquid with alumino-silicate materials such as fly ash, blast furnace slag, rice husk etc., Geopolymer also has the ability to form a strong chemical bond with rock based aggregates. Fiber reinforced geopolymer concrete is relatively a new composite material in which fibers are introduced in the matrix as micro reinforced to improve the strength properties. This paper presents a new review on various research works done in the area of geopolymer concrete and the effect of fiber on their mechanical properties.
Highlights
The demand for concrete as a construction material increases exponentially and thereby, there is an increase in the demand for the production of ordinary Portland cement (OPC)
The production of one ton cement releases around one ton of carbon dioxide to the atmosphere due to the calcinations of lime stone and combustion of fossil fuel and causes the global warming condition
In 1978, Davidovits proposed that binders can be produced by polymeric reaction of alkaline liquid with alumino-silicate materials such as fly ash, rice husk ash, blast furnace slag etc. and termed these binders as Geopolymers
Summary
The demand for concrete as a construction material increases exponentially and thereby, there is an increase in the demand for the production of OPC. The production of cement is highly energy intensive and it consumes a large amount of natural resources. To reduce these problems, it is necessary to find out an alternative material for cement. Many researches were carried out to find a replacement for cement. Partial replacement and high volume replacement of OPC with materials having binding property were studied. Geopolymer can be considered as a green material, because it relies on minimally processed natural materials or industrial byproducts, reducing its carbon footprint. Incorporation of fibers in concrete has been found to improve several properties of concrete like cracking resistance, ductility and fatigue resistance, impact and wear resistance
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