How do silicone hydrophobic agents work in mortar?
Water repellent is a common additive in building materials, especially in mortar. Its main function is to improve the waterproof performance of mortar, improve its durability and stability, so that it can maintain excellent performance in humid environments. So, specifically, how do hydrophobic agents work in mortar? Silicone Hydrophobic agents are substances that make materials repellent to water. It can change the surface properties of materials, making the surface less wettable by water. When these materials come into contact with water, the water will form beads on the surface due to surface tension, rather than immediately penetrating into the material. This is what we often call the "pearl shape". What changes will happen when we add a silicone hydrophobic powder to the mortar? The water absorption of the mortar will be significantly reduced. This is because the silicone hydrophobic agent changes the properties of the mortar surface, ma...