ACCELERATED CARBONATION CURNG OF BIOCHAR MORTAR IN MARINE ENVIRONMENT

Abstract

As global warming becomes a more prevailing issue in recent years, there has been widespread interest in the use of Accelerated Carbon Curing (ACC) as an effective way to decrease Carbon Dioxide (CO2) emissions and enhance the mechanical qualities of cement-based materials. Biochar has also been widely considered as an effective way to sequester CO2 and to enhance the mechanical strength while reducing permeability of cement mortar. However, the use of ACC on biochar and its effectiveness in a marine environment has not been extensively studied, this paper aims to investigate the effects of ACC on the compressive strength of biochar mixed mortar cubes submerged in seawater.

28-Day compression tests were applied across 12 different sample groups and the results show that 1) ACC improved the compressive strength of the biochar cubes 2) Seawater decreased the compressive strength of the biochar cubes 3) Having a 2% Biochar mix as compared to Ordinary Portland Cement (OPC) increases the compression strength. This study thus highlights the potential of ACC as a viable method for enhancing the performance of biochar mortar in marine environments, which is vital for the sustainability progression of construction and maintenance of marine structures.