Enhancement of properties of concrete using carbon dioxide: An initiative to curb carbon footprints

Sinha, Priyanshu; Hui, Sudipta; Moharana, Narayan C.

Abstract

In the present era, the word "Global Warming" needs no further introduction as 72% of the emitted greenhouse gases arecarbon dioxide of which 7%is produced when calcium carbonate is calcinated during the manufacturing of cement. This process is perilous to the environment. According to the International Energy Agency (IEA), every year approximately 33.5 billion tonnes of CO 2 is emitted which contributes to global warming. Therefore, it has become an arduous challenge to the construction industry to emphasize this matter for further research. By adopting Carbon Cure technology as the curing at the initial stage will help in eradicating the impact. So far 22,400 tonnes of CO 2 have been utilized and gainfully used utilizing CC technology. In this mechanism CO 2 collected, purified, and infused into the concrete. This process helps the concrete in attaining high early strength in comparison to the conventional curing. The injected CO 2 gets transformed into a mineral and gets permanently embedded into the concrete. This method of curing could replace steam curing in the field of cost. It is also eco-friendly as entrapped CO 2 doesn't leave the concrete even after pulverization as it chemically rearranged into a mineral.This paper focuses on mechanism, outcome, feasibility, applications,Andthe future scope of this technology. Materials used are Ordinary Portland Cement (OPC), Fly ash(FA), Ground Granulated Blast Furnace Slag (GGBFS), Red Mud (RA), and Superplasticizer. The concrete is tested for mechanical, flexural, and split tensile strength. Microscopic tests include X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM)Thermogravimetric Analysis (TGA), Mercury Intrusion Porosimetry (MIP) to examine the chemical reactions and products formed. The durability test includes a carbonation test to evaluate the depth of carbonation to state its durability parameter. Lastly, to determine its feasibility and scope in the future to practice in the construction industry.

• Journal Article Type: Review
• Conference Name: NCACME 2020 - NNational Conference on Advances in Civil & Mechanical Engineering 2020
• Acceptance Date: Aug 5, 2020
• Online Publication Date: Nov 16, 2022
• Publication Date: Nov 16, 2022
• Deposit Date: May 19, 2023
• Journal: IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE)
• Print ISSN: 2320–334X
• Electronic ISSN: 2278-1684
• Peer Reviewed: Not Peer Reviewed
• Volume: 1
• Issue: 10
• Keywords: CO 2; Carbon Curing; Carbonation; Concrete
• Public URL: https://uwe-repository.worktribe.com/output/10798847
• Publisher URL: https://www.iosrjournals.org/iosr-jmce/papers/NCACME%202020/Volume%20-1/10,%2051-57.pdf
• Related Public URLs: https://www.iosrjournals.org/iosr-jmce/papers/NCACME%202020/; ; https://constrofacilitator.com/ace-2020-national-conference-on-advances-in-civil-engineering-2020/