ABSTRACT
Nowadays the CO2 concentration in the atmosphere is drastically getting increased leading to serious effect like global warming. To hold this in control Zeolite molecular sieves can be used as plasters on the surface of concrete members and tiles. These surface plasters can adsorb CO2 on their surfaces to form monodentate carbonate species. Sealing them with sealers like PVC coatings can lock CO2 and these tiles can be commercialized as a product. Sand can be fully replaced in the mortar and these Zeolite plasters are applied over the Concrete cubes to adsorb large quantity of CO2 at their surfaces. Here the Zeolite 4A is plastered over the surface of concrete and its CO2 adsorbing capacity per sq.m area was studied. The Strength properties of Zeolite Plastered Concrete (ZPC) and Conventional Concrete (CC) were compared. Further its effects on durability properties of concrete like Carbonation depth, Fire Resistance at three different temperatures of 250˙C, 500˙C, 750˙C and variations in their strength properties due to this over the ages were studied. The ZPC show better results in CO2 adsorption and fire test than that of CC.
