Influx potential and sequestration of CO2 in Cement based material towards establishing a proactive measure for combatting structural deformations

Sanni, Samuel Eshorame and Odigure, Joseph. O. and Agboola, Oluranti and Emetere, Moses and Okoro, Emeka Emmanuel and Aderinsola, O (2020) Influx potential and sequestration of CO2 in Cement based material towards establishing a proactive measure for combatting structural deformations. In: IOP Conf. Series: Materials Science and Engineering.

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Abstract

The effect of carbon dioxide sequestration by Sandcrete structures was investigated as a means of reducing CO2 emissions. Experiments were conducted to determine the concentration of trioxocarbonate IV (CO32-) in sandcrete samples as well as its effect on soil pH. The results showed that the presence of CO32-in sandcrete samples evidenced the process of carbonation in sandcrete structures and other cement-based material which provides an alternative means of CO2 Sequestration. Also, the concentration of CO32- varied along heights and horizontal distance within sections of the sandcrete structure. The acidic nature of the soil close to some sections of the sandcrete structure experienced varying pHs of 6.14 - 6.35 which gave room for enhanced leaching which seriously undermines the strength of the sandcrete structure. The percentage concentration differential in the horizontal and vertical directions, were found to vary widely from 5-46%. This constitutes a potential danger i.e. cracking and possible collapse of the structure. The results of calculated diffusivity values and concentration gradients of the carbonate ion conformed with results obtained using a predictive model which helped in monitoring the migration patterns of CO3 2 - in the sandcrete structure.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	Carbon sequestration, sandcrete structures, influx potential, structural deformation, CO32--migration pattern
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	AKINWUMI
Date Deposited:	16 Nov 2022 12:06
Last Modified:	16 Nov 2022 12:06
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/16454

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