An Alternative Technique for Accelerated Carbonation of Normal Concrete

Abstract

Carbonation is a continuous process in concrete structures and taking place for large period of time. The present study investigates accelerated carbonation effect on normal concrete with the help of Ammonium Bicarbonate (NH4HCO3) solution. Normal concrete specimens were exposed to carbonated water curing for different durations after initial 28 days of normal water curing. The effect of carbonated water curing on concrete specimens was studied with the help of compressive strength test and pH profiling test. From the results, it was observed that the compressive strength of normal concrete specimens increased and pH value increased along the depth from the surface with prolonged carbonated water curing.