Effect of nanobubble water on the mechanical properties and carbon sequestration efficiency of concrete cured under various conditions

Abstract

Carbon consuming concrete (CCC) represents an advanced sustainable concrete designed to optimize carbon sequestration efficiency. This study conducted preliminary tests on curing conditions to evaluate the effects of nanobubble water on the strength and carbon sequestration efficiency of concrete cured under various conditions. The curing conditions were characterized by temperature, duration, and the type of curing water utilized. The precipitation method was employed to validate the variation in the CO2-capturing capacity of nanobubble water (NBW), essential for carbon fixation within cementitious composites, as temperatures increased. Subsequently, compressive strength test and chemical analyses were performed on CCC manufactured under different curing conditions. Analysis techniques comprise differential thermogravimetry (DTG) and Fourier transform infrared spectroscopy (FT-IR). The carbon sequestration efficiency of CCC was observed to increase with shorter curing durations, and high temperatures could boost both the strength and carbon sequestration efficiency of CCC.

Keywords

• Carbon consuming concrete
• CO2 capturing
• Nanobubble
• Curing condition
• Chemical analysis