A novel low carbon cementitious binder incorporating yellow sand and clinker for non-structural application

Abstract

Concrete preparation requires a significant quantity of natural reserves worldwide and necessitates the development of alternative materials and sources. The manufacturing of concrete needs around 27 billion tonnes of raw material inventory, representing four tonnes of concrete per person per year. By 2025, around 4 billion tonnes of carbon dioxide (approximately) are estimated to be released to the atmosphere during cement production. This study focuses on the development of a novel Low Carbon Cementitious Binder (LCCB) for non-structural applications, The LCCB developed in this study is a mortar that incorporates natural sand as an aggregate. The composition of the LCCB is 60% linker, 30% clinker, 10% lime, and natural sand. The natural sand is used as an aggregate in the mortar, which contributes to its overall strength and durability. The compressive strength of the LCCB was tested after 15 years, and the results showed a strength of 27 MPa, indicating its potential for use in construction. Additionally, the phase formation of the LCCB was confirmed using XRD, and SEM analysis, and its mineralogy was evaluated using microscopy. The results indicated that the LCCB is a suitable alternative to cement-based binders for non-structural applications, offering significant benefits in terms of reduced environmental impact and sustainability. Overall, this study represents a significant step towards developing more sustainable and environmentally friendly materials for the construction industry.