An Experimental Study on Strength Characteristics of Concrete, Using Partial Replacements as Alccofine and Iron Waste for Cement and Fine Aggregate Respectively

Alccofine-1203, a micro-mineral Supplementary Cementitious Material (SCM), is gaining traction for its potential to enhance both the sustainability and performance of concrete. Marked by its eco-friendly characteristics and minimal calcium silicate content, Alccofine-1203 undergoes a meticulously controlled granulation process, resulting in ultra-fine particles with heightened reactivity. Its incorporation into concrete not only elevates compressive strength but also enhances flow ability and workability, attributed to its unique chemistry and high glass content. Notably, the presence of calcium oxide (CaO) facilitates the formation of additional C-S-H gel, thereby promoting early-age strength development. Furthermore, its pH-raising capabilities provide corrosion protection and reinforce durability characteristics, positioning it as a promising solution for sustainable concrete production. Concurrently, iron powder emerges as a viable alternative in the concrete industry, offering a means to alleviate the escalating demand for natural sand and mitigate environmental repercussions. Studies suggest that substituting a portion of sand with iron powder enhances both compressive and split-tensile strength in concrete, presenting a sustainable approach to reduce reliance on natural sand resources and mitigate associated environmental hazards. These advancements underscore a pivotal shift towards sustainable construction practices, aiming to meet burgeoning material demands while safeguarding environmental integrity.