Smart-sized silica and brick kiln dust for stronger more sustainable white cement

Hydration properties of blended cements made from white Portland cement and the waste material obtain from brick kiln called as brick kiln dust (BKD) and smart-sized silica (SSS). This research analyzes the performance of White Portland Cement (WPC) when partially substituted with 40% SSS and 5% BKD by measuring Setting time, pH performance, liquid phase analysis, determination of free lime, SEM, XRD, Compressive strength test. Scanning electron microscopy (SEM) was used in experiments to investigate microstructural changes. The characteristics of WPC are greatly enhanced by the inclusion of BKD and SSS. A small adjustment to the setting time ensures high workability without sacrificing performance. After 28 days of curing, the blended cement acquires a much higher strength than control WPC, according to the compressive strength measurement. The main cause of this improvement is the capacity of SSS to promote the development of dense calcium-silicate-hydrate (C-S-H) gel, which improves the cement matrix. BKD enhances strength and durability by participating in the pozzolanic reaction. Furthermore, using SSS and BKD in place of certain WPC lowers production costs and the environmental impact. According to this study, WPC is a great substitute for conventional formulations since it produces a stronger, more sustainable cement when 40% SSS and 5% BKD are added.