UAE turns desert sand into eco-friendly bricks using nearly half the cement

Dubai, surrounded by vast expanses of desert sand, has discovered an innovative way to repurpose this seemingly worthless resource into eco-friendly building materials. A groundbreaking study conducted by researchers at the University of Sharjah has revealed that utilizing desert sand can result in bricks that require nearly half the amount of cement compared to traditional concrete.

The key to this eco-friendly innovation lies in the use of alkali-activated binders that transform desert sand into a durable and sustainable building material. By incorporating industrial by-products such as blast furnace slag and industrial ashes into the mixture, the researchers have not only reduced waste but also decreased the demand for conventional raw materials. This approach aligns with the growing emphasis on sustainability within the construction industry.

One of the most remarkable features of these bricks is that they can be cured at room temperature. This eliminates the need for thermal curing or oven usage, which would otherwise increase energy consumption and raise manufacturing costs. The bricks demonstrated exceptional resistance to sulfate attack, a common issue in coastal and marine environments where sulfate-rich soils and groundwater can cause significant deterioration.

Not only did the eco-friendly bricks outperform cement-based bricks under sulfate exposure, but they also showed lower water absorption. This is a critical factor, as excessive water ingress can compromise the durability of masonry materials over time, particularly in aggressive environments. The researchers concluded that the desert sand bricks exhibited superior mechanical performance to conventional cement-based bricks in several tests.

While the research shows promising results, it must be noted that the technology is still in its experimental stage. Further testing, including larger-scale production, quality standardization, and cost analysis, is required to determine if this innovative brick can compete with existing alternatives in the construction market. Nevertheless, the potential to leverage locally available desert sand and industrial by-products could lead to the development of building materials that are not only environmentally friendly but also resilient in harsh conditions.