• Abstract

    The valorization of natural resources within the cement industry has become a pressing challenge in Morocco, particularly in the eastern region, which is home to extensive but poorly managed areas of needle grass (Stipa tenacissima). This study aims to investigate the impact of using needle grass residue powder, derived from crushing the herb, as a shrinkage and crack-reducing agent in cementitious materials. This innovative approach involves incorporating the powder into cement formulations to enhance physical and mechanical properties and reduce the risk of fracture propagation. Cementitious materials are highly sensitive to environmental conditions, particularly variations in internal relative humidity and hydration, leading to macroscopic deformations that can damage structures. This process, known as drying shrinkage, often results in cracks that not only affect the aesthetic appeal but also compromise the material's structural integrity. Our experimental investigation demonstrates that substituting cement paste with crushed needle grass powder at varying percentages (10%, 25%, and 50%) improves compressive and tensile strength and significantly mitigates the formation and width of cracks, delaying their onset. Furthermore, the drying shrinkage and the crack width begins to develop as soon as the material develops sufficient rigidity.

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How to cite

Aqil, M., Soussi, H., & Ben Tahar, M. (2024). Impact of needle grass Powder as hydraulic binder on eco-Friendly cementitious materials . Multidisciplinary Science Journal, 7(6), 2025295. https://doi.org/10.31893/multiscience.2025295
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