Enhancing Water Repellency in Cement Concrete Through PDMS-Based Superhydrophobic Coatings.

Surface coatings such as hydrophobic and transparent coatings were applied to cement concrete surfaces using Polydimethylsiloxane (PDMS) coatings, which have nanometer-sized particles. The degree of contact between the liquid and the coated surface reveals the surface's ability to repel water, commonly referred to as hydrophobicity. By depositing silicon coating on the surface, we successfully achieved superhydrophobicity on cement concrete, providing excellent resistance against water damage. We are striving to replicate the natural superhydrophobic properties found in nature to create artificial surfaces with similar characteristics. In this study, we experimented to develop and evaluate superhydrophobic coatings on cement concrete. The application of PDMS on the cement concrete yielded fascinating results, with the typical contact angle of the coated layer measuring 178 degrees. We utilized ImageJ software to analyze the results. This innovative approach holds great promise for enhancing water repellency in the field of construction. PDMS (Polydimethylsiloxane) enhances the hydrophobic properties of cement by bonding through dehydration reactions with hydroxyl groups on cement surfaces, reducing defects and forming a more coherent Si-O-Si network that repels water and other polar molecules, leading to a super-hydrophobic surface. [ABSTRACT FROM AUTHOR]