An Experimental Investigation on CO2 Adsorption Zero Cement Concrete with Partial Replacement of Aggregates

Abstract

Abstract: Cement production has a significant environmental impact, causing air pollution in the form of dust, gases, and noise during quarrying and milling. To address this concern, modified cement, a cementitious material that surpasses Portland cement's performance by incorporating recycled and waste materials, is proposed as a sustainable construction option. By reducing the use of raw materials, modified cement can lead to essential environmental benefits. In this experimental study, the feasibility of using sea shell and Titanium Di Oxide as alternative cementitious materials is explored. These materials demonstrate good pozzolanic reactivity and the ability to absorb carbon dioxide from the atmosphere. A mix design based on the Indian standard method of M25 is adopted, and three replacement levels (10%, 15%, and 20%) are considered for investigation. CO2 emissions from cement production are a major concern in the building industry. By utilizing sea shell and Titanium Di Oxide as cement substitutes, this study aims to contribute to energy conservation and environmental preservation. Trial mixes are prepared for each composition, and the results are compared with conventional concrete at different design mixes. The use of sea shell and Titanium Di Oxide as cement alternatives shows potential for achieving CO2 adsorption and reducing environmental impacts. This research offers insights into sustainable construction practices, paving the way for eco-friendly and resource-efficient building materials.