Experimental Investigation on Fly Ash based Geo Polymer Self Cleaning Concrete

Concrete is the most comprehensively used material for construction in building technology. However, production of the cement releases huge amounts of carbon dioxide (CO2) to the atmosphere that leads to increasing the global warming worldwide. Thus, for environmental friendly construction an innovative alternative material such as photo catalyst concrete has been established. Photocatalytic concrete replaces the Conventional cement and gives eco-friendly alternative binder. This technology offered Nano particles to improve their mechanical properties by adding the Nano clay into the cement paste. Such type of concrete also has been developed to be performed as self-cleaning construction materials. The self-cleaning properties of the concrete are improvised with the help of photocatalytic materials such as titanium Di-oxide (TiO2). Self-cleaning concrete that contains those photocatalytic will be strengthened by ultraviolet (UV) radiation and hastens the disintegration of organic particulates. Thus, the neatness of the building surfaces can be sustained and pollution developed in air can be reduced. In this study, the photocatalytic material used is Titanium dioxide (TiO2) which is added to concrete by 3, 5, and 8% of cement by weight. The fly ash can also be used to improve the properties of such concrete in order to enhance the self-compacting properties. The fly ash replaces the cement by 10%, 20% & 30% respectively for different grades of concrete. The various tests i.e. compressive strength test, flexural strength test and tensile strength test will be conducted on the specimen of hardened concrete. Workability test will be conducted on fresh concrete for determining the property of self-cleaning concrete. Durability test of self-cleaning concrete was conducted by using sodium chloride (NaCl) solution. The test for determining the self-cleaning property of the photocatalytic concrete is examined by using RhB (Rhoda mine dye) discolouration under U.V. light, which is also considered as a standard test for self-cleaning cementitious materials. The results will give an idea regarding the suitability of alternative material rather than conventional concrete and with the photocatalytic action the concrete will be used as self-cleaning which will be eco-friendly for environment.