In a significant advancement for the construction industry, researchers at CY Cergy Paris University have unveiled compelling findings on the use of crushed sand as a substitute for traditional river sand in mortar applications. As river sand becomes increasingly scarce due to environmental regulations and over-extraction, this study, published in the journal Cleaner Materials, sheds light on the potential benefits of crushed sand, particularly regarding its impact on carbonation resistance.
Lead author Emmanuel A.M. Elat and his team conducted a thorough investigation into the physical and microstructural properties of mortar containing crushed sand. They employed advanced techniques such as X-ray Diffraction (XRD), Thermo-Gravimetric Analysis (TGA), and Scanning Electron Microscopy (SEM) to analyze the effects of substituting river sand with crushed sand after exposure to a 3% CO2 environment over 28 days. The results are promising for the construction sector, indicating that crushed sand can enhance the durability of mortar against carbon dioxide attack.
Elat emphasized the significance of their findings, stating, “Our study reveals that the partial or total substitution of river sand with crushed sand not only addresses environmental concerns but also improves the material’s resistance to carbonation. This could lead to longer-lasting structures and reduced maintenance costs.” The research highlights a decrease in porosity in mortar mixtures with higher proportions of crushed sand, which is crucial for improving the longevity and performance of concrete structures.
The implications of this research extend beyond the laboratory. With the construction industry continuously seeking sustainable practices, the adoption of crushed sand could lead to a paradigm shift in material sourcing and usage. As the demand for eco-friendly building materials rises, companies that embrace this innovation may find themselves at a competitive advantage, potentially lowering costs and enhancing the durability of their projects.
Furthermore, the findings align with global trends towards sustainability in construction, suggesting that crushed sand could play a vital role in reducing the environmental footprint of building practices. As regulations tighten around the extraction of natural resources, the shift to alternative materials like crushed sand may become not only beneficial but necessary.
The research conducted by Elat and his team is a timely reminder of the need for innovation in the construction sector. As they continue to explore the benefits of crushed sand, the industry may witness a transformative change that not only addresses material shortages but also enhances the resilience of infrastructures against the challenges posed by climate change.
For more information on this groundbreaking research, you can visit the Laboratory of Mechanics and Materials of Civil Engineering at CY Cergy Paris University.